android json解析及简单例子

jopen 8年前
     <p></p>    <h1><span style="font-family:SimHei;font-size:24px;">JSON的定义:</span></h1>    <p></p>    <p style="font-size:16px;">       <span style="font-family:KaiTi_GB2312;">一种轻量级的数据交换格式,具有良好的可读和便于快速编写的特性。业内主流技术为其提供了完整的解决方案(有点类似于正则表达式 ,获得了当今大部分语言的支持),从而可以在不同平台间进行数据交换。JSON采用兼容性很高的文本格式,同时也具备类似于C语言体系的行为。 – Json.org</span></p>    <p><strong><span style="line-height:26px;font-family:Arial;color:#333333;"><span style="font-size:16px;">JSON Vs XML</span></span><br style="text-align:left;line-height:26px;font-family:Arial;color:#333333;font-size:14px;" /> </strong></p>    <blockquote style="border-bottom:medium none;border-left:medium none;padding-bottom:0px;margin:0px 0px 0px 40px;padding-left:0px;padding-right:0px;border-top:medium none;border-right:medium none;padding-top:0px;">     <p><span style="font-size:16px;"><span style="text-align:left;line-height:26px;color:#333333;"><span style="font-family:KaiTi_GB2312;">1.JSON和XML的数据可读性基本相同</span></span></span></p>    </blockquote>    <blockquote style="border-bottom:medium none;border-left:medium none;padding-bottom:0px;margin:0px 0px 0px 40px;padding-left:0px;padding-right:0px;border-top:medium none;border-right:medium none;padding-top:0px;">     <p><span style="font-size:16px;"><span style="text-align:left;line-height:26px;color:#333333;"><span style="font-family:KaiTi_GB2312;">2.JSON和XML同样拥有丰富的解析手段</span></span></span></p>     <p><span style="font-size:16px;"><span style="text-align:left;line-height:26px;color:#333333;"><span style="font-family:KaiTi_GB2312;">3.JSON相对于XML来讲,数据的体积小</span></span></span></p>     <p><span style="font-size:16px;"><span style="text-align:left;line-height:26px;color:#333333;"><span style="font-family:KaiTi_GB2312;">4.JSON与JavaScript的交互更加方便</span></span></span></p>     <p><span style="font-size:16px;"><span style="font-family:KaiTi_GB2312;">5.JSON对数据的描述性比XML较差</span></span></p>     <p></p>     <div>      <span style="color:#333333;font-size:16px;"><span style="line-height:26px;"><span style="font-family:KaiTi_GB2312;">6.JSON的速度要远远快于XML</span></span></span>     </div>    </blockquote>    <strong><br /> </strong>    <p></p>    <p><strong><span style="font-size:16px;">android2.3提供的json解析类</span></strong><span style="line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;"> </span></p>    <span style="font-size:16px;"><span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;">android的json解析部分都在包org.json下,主要有以下几个类: </span><br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;" /> </span>    <blockquote style="border-bottom:medium none;border-left:medium none;padding-bottom:0px;margin:0px 0px 0px 40px;padding-left:0px;padding-right:0px;border-top:medium none;border-right:medium none;padding-top:0px;">     <p><span style="font-size:16px;"><span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;"><strong>JSONObject</strong>:可以看作是一个json对象,<span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">这是系统中有关</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">JSON</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">定义的基本单元,其包含一对儿</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">(Key/Value)</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">数值。它对外部</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">(External</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">:   应用</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">toString()</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">方法输出的数值</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">)</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">调用的响应体现为一个标准的字符串(例如:</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;color:#76923c;"><span style="font-family:Calibri;">{"JSON": "Hello, World"}</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">,最外被大括号包裹,其中的</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">Key</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">和</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">Value</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">被冒号</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">":"</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">分隔)。其对于内部</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">(Internal)</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">行为的操作格式略微,例如:初始化一个</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">JSONObject</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">实例,引用内部的</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">put()</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">方法添加数值:</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;color:#76923c;"><span style="font-family:Calibri;">new JSONObject().put("JSON", "Hello, World!")</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">,在</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">Key</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">和</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">Value</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">之间是以逗号</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;" lang="EN-US"><span style="font-family:Calibri;">","</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;">分隔。</span></span></span><span style="line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;" lang="EN-US"><span style="font-family:Calibri;">Value</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">的类型包括:</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;" lang="EN-US"><span style="font-family:Calibri;">Boolean</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">、</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;" lang="EN-US"><span style="font-family:Calibri;">JSONArray</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">、</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;" lang="EN-US"><span style="font-family:Calibri;">JSONObject</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">、</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;" lang="EN-US"><span style="font-family:Calibri;">Number</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">、</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;" lang="EN-US"><span style="font-family:Calibri;">String</span></span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">或者默认值</span><span style="text-align:left;line-height:25px;text-indent:28px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;" lang="EN-US"><span style="font-family:Calibri;">JSONObject.NULL object 。</span></span></p>    </blockquote>    <blockquote style="border-bottom:medium none;border-left:medium none;padding-bottom:0px;margin:0px 0px 0px 40px;padding-left:0px;padding-right:0px;border-top:medium none;border-right:medium none;padding-top:0px;">     <p><span style="font-size:16px;"><span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;"><strong>JSONStringer</strong>:json文本构建类 ,根据官方的解释,<span style="line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">这个类可以帮助快速和便捷的创建JSON text<span style="line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">。其最大的优点在于可以减少由于 格式的错误导致程序异常,引用这个类可以自动严格按照JSON语法规则(syntax rules)创建JSON text。每个JSONStringer实体只能对应创建一个JSON text。</span><span style="line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">。其最大的优点在于可以减少由于格式的错误导致程序异常,引用这个类可以自动严格按照JSON语法规则(syntax rules)创建JSON text。每个JSONStringer实体只能对应创建一个JSON text。</span></span></span></span></p>    </blockquote>    <blockquote style="border-bottom:medium none;border-left:medium none;padding-bottom:0px;margin:0px 0px 0px 40px;padding-left:0px;padding-right:0px;border-top:medium none;border-right:medium none;padding-top:0px;">     <p style="text-align:left;"><span style="font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;"><span style="line-height:25px;"><strong>JSONArray</strong>:</span></span><span style="line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">它代表一组有序的数值。将其转换为String输出(toString)所表现的形式是用方括号包裹,数值以逗号”,”分隔(例如:     [value1,value2,value3],大家可以亲自利用简短的代码更加直观的了解其格式)。这个类的内部同样具有查询行为,     get()和opt()两种方法都可以通过index索引返回指定的数值,put()方法用来添加或者替换数值。</span><span style="font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:16px;">同样这个类的value类型可以包括:Boolean、JSONArray、JSONObject、Number、String或者默认值JSONObject.NULL object。</span></p>    </blockquote>    <blockquote style="border-bottom:medium none;border-left:medium none;padding-bottom:0px;margin:0px 0px 0px 40px;padding-left:0px;padding-right:0px;border-top:medium none;border-right:medium none;padding-top:0px;">     <span style="font-size:16px;"><span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;"><strong>JSONTokener</strong>:json解析类 <br /> </span></span>     <span style="font-size:16px;"><span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;"><strong>JSONException</strong>:json中用到的异常 </span></span>    </blockquote>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <strong><span style="font-size:16px;">JSONObject, JSONArray来构建json文本</span></strong>    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;"> </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <div style="text-align:left;padding-bottom:1px;line-height:25px;overflow-x:auto;overflow-y:auto;padding-left:1px;width:694px;padding-right:1px;font-family:Monaco,'DejaVu Sans Mono','Bitstream Vera Sans Mono',Consolas,'Courier New',monospace;word-wrap:break-word;margin-left:9px;word-break:break-all;padding-top:1px;" class="dp-highlighter">     <div class="bar">      <div style="padding-bottom:3px;margin:0px;padding-left:3px;padding-right:3px;font-weight:bold;padding-top:3px;" class="tools">       代码         <a style="color:#108ac6;" title="收藏这段代码" href="/misc/goto?guid=4959500743487817234"></a>      </div>     </div>     <ol style="border-bottom:#d1d7dc 1px solid;border-left:#d1d7dc 1px solid;padding-bottom:2px;line-height:1.4em;margin:0px 0px 1px;padding-left:0px;padding-right:0px;font-size:1em;border-top:#d1d7dc 1px solid;border-right:#d1d7dc 1px solid;padding-top:2px;" class="dp-j">      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">// 假设现在要创建这样一个json文本</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//  {</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "phone" : ["12345678", "87654321"], // 数组</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "name" : "yuanzhifei89", // 字符串</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "age" : 100, // 数值</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "address" : { "country" : "china", "province" : "jiangsu" }, // 对象</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "married" : false // 布尔值</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//  }</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#7f0055;font-weight:bold;" class="keyword">try</span> {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 首先最外层是{},是创建一个对象</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    JSONObject person = <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> JSONObject();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 第一个键phone的值是数组,所以需要创建数组对象</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    JSONArray phone = <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> JSONArray();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    phone.put(<span style="color:blue;" class="string">"12345678"</span>).put(<span style="color:blue;" class="string">"87654321"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.put(<span style="color:blue;" class="string">"phone"</span>, phone);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.put(<span style="color:blue;" class="string">"name"</span>, <span style="color:blue;" class="string">"yuanzhifei89"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.put(<span style="color:blue;" class="string">"age"</span>, <span style="color:#c00000;" class="number">100</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 键address的值是对象,所以又要创建一个对象</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    JSONObject address = <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> JSONObject();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    address.put(<span style="color:blue;" class="string">"country"</span>, <span style="color:blue;" class="string">"china"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    address.put(<span style="color:blue;" class="string">"province"</span>, <span style="color:blue;" class="string">"jiangsu"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.put(<span style="color:blue;" class="string">"address"</span>, address);  </span><span style="color:#000000;">  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.put(<span style="color:blue;" class="string">"married"</span>, <span style="color:#7f0055;font-weight:bold;" class="keyword">false</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">} <span style="color:#7f0055;font-weight:bold;" class="keyword">catch</span> (JSONException ex) {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 键为null或使用json不支持的数字格式(NaN, infinities)</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#7f0055;font-weight:bold;" class="keyword">throw</span> <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> RuntimeException(ex);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">}  </span></li>     </ol>    </div>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <strong><span style="font-size:16px;">getType和optType api的使用</span></strong>    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;"> </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <blockquote style="border-bottom:medium none;border-left:medium none;padding-bottom:0px;margin:0px 0px 0px 40px;padding-left:0px;padding-right:0px;border-top:medium none;border-right:medium none;padding-top:0px;">     <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;">getType可以将要获取的键的值转换为指定的类型,如果无法转换或没有值则抛出JSONException <br /> </span>     <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;">optType也是将要获取的键的值转换为指定的类型,无法转换或没有值时返回用户提供或这默认提供的值 </span>    </blockquote>    <div style="text-align:left;padding-bottom:1px;line-height:25px;overflow-x:auto;overflow-y:auto;padding-left:1px;width:694px;padding-right:1px;font-family:Monaco,'DejaVu Sans Mono','Bitstream Vera Sans Mono',Consolas,'Courier New',monospace;word-wrap:break-word;margin-left:9px;word-break:break-all;padding-top:1px;" class="dp-highlighter">     <div class="bar">      <div style="padding-bottom:3px;margin:0px;padding-left:3px;padding-right:3px;font-weight:bold;padding-top:3px;" class="tools">       代码         <a style="color:#108ac6;" title="收藏这段代码" href="/misc/goto?guid=4959500743487817234"></a>      </div>     </div>     <ol style="border-bottom:#d1d7dc 1px solid;border-left:#d1d7dc 1px solid;padding-bottom:2px;line-height:1.4em;margin:0px 0px 1px;padding-left:0px;padding-right:0px;font-size:1em;border-top:#d1d7dc 1px solid;border-right:#d1d7dc 1px solid;padding-top:2px;" class="dp-j">      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#7f0055;font-weight:bold;" class="keyword">try</span> {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 所有使用的对象都是用上面创建的对象</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 将第一个电话号码转换为数值和将名字转换为数值</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    phone.getLong(<span style="color:#c00000;" class="number">0</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.getLong(<span style="color:blue;" class="string">"name"</span>); <span style="color:#008200;" class="comment">// 会抛异常,因为名字无法转换为long</span>  </span><span style="color:#000000;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    phone.optLong(<span style="color:#c00000;" class="number">0</span>); <span style="color:#008200;" class="comment">// 代码内置的默认值</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    phone.optLong(<span style="color:#c00000;" class="number">0</span>, <span style="color:#c00000;" class="number">1000</span>); <span style="color:#008200;" class="comment">// 用户提供的默认值</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.optLong(<span style="color:blue;" class="string">"name"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    person.optLong(<span style="color:blue;" class="string">"name"</span>, <span style="color:#c00000;" class="number">1000</span>); <span style="color:#008200;" class="comment">// 不像上面那样抛异常,而是返回1000</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">} <span style="color:#7f0055;font-weight:bold;" class="keyword">catch</span> (JSONException ex) {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 异常处理代码</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">}  </span></li>     </ol>    </div>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <strong><span style="font-size:16px;">除了上面的两个类,还可以使用JSONStringer来构建json文本</span></strong>    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;"> </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <div style="text-align:left;padding-bottom:1px;line-height:25px;overflow-x:auto;overflow-y:auto;padding-left:1px;width:694px;padding-right:1px;font-family:Monaco,'DejaVu Sans Mono','Bitstream Vera Sans Mono',Consolas,'Courier New',monospace;word-wrap:break-word;margin-left:9px;word-break:break-all;padding-top:1px;" class="dp-highlighter">     <div class="bar">      <div style="padding-bottom:3px;margin:0px;padding-left:3px;padding-right:3px;font-weight:bold;padding-top:3px;" class="tools">       Java代码         <a style="color:#108ac6;" title="收藏这段代码" href="/misc/goto?guid=4959500743487817234"></a>      </div>     </div>     <ol style="border-bottom:#d1d7dc 1px solid;border-left:#d1d7dc 1px solid;padding-bottom:2px;line-height:1.4em;margin:0px 0px 1px;padding-left:0px;padding-right:0px;font-size:1em;border-top:#d1d7dc 1px solid;border-right:#d1d7dc 1px solid;padding-top:2px;" class="dp-j">      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#7f0055;font-weight:bold;" class="keyword">try</span> {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    JSONStringer jsonText = <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> JSONStringer();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 首先是{,对象开始。object和endObject必须配对使用</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.object();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:#000000;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.key(<span style="color:blue;" class="string">"phone"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 键phone的值是数组。array和endArray必须配对使用</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.array();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.value(<span style="color:blue;" class="string">"12345678"</span>).value(<span style="color:blue;" class="string">"87654321"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.endArray();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.key(<span style="color:blue;" class="string">"name"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.value(<span style="color:blue;" class="string">"yuanzhifei89"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.key(<span style="color:blue;" class="string">"age"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.value(<span style="color:#c00000;" class="number">100</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.key(<span style="color:blue;" class="string">"address"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 键address的值是对象</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.object();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.key(<span style="color:blue;" class="string">"country"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.value(<span style="color:blue;" class="string">"china"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.key(<span style="color:blue;" class="string">"province"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.value(<span style="color:blue;" class="string">"jiangsu"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.endObject();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.key(<span style="color:blue;" class="string">"married"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.value(<span style="color:#7f0055;font-weight:bold;" class="keyword">false</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// },对象结束</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonText.endObject();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">} <span style="color:#7f0055;font-weight:bold;" class="keyword">catch</span> (JSONException ex) {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#7f0055;font-weight:bold;" class="keyword">throw</span> <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> RuntimeException(ex);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;color:#2b91af;font-size:1em;padding-top:0px;"><span style="color:black;">}  </span></li>     </ol>    </div>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <strong><span style="font-size:16px;">json文本解析类JSONTokener</span></strong>    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;"> </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;">按照RFC4627规范将json文本解析为相应的对象。 </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <strong><span style="font-size:16px;">对于将json文本解析为对象,只需要用到该类的两个api:</span></strong>    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;"> </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;">构造函数 </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;">public Object nextValue(); </span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <div style="text-align:left;padding-bottom:1px;line-height:25px;overflow-x:auto;overflow-y:auto;padding-left:1px;width:694px;padding-right:1px;font-family:Monaco,'DejaVu Sans Mono','Bitstream Vera Sans Mono',Consolas,'Courier New',monospace;word-wrap:break-word;margin-left:9px;word-break:break-all;padding-top:1px;" class="dp-highlighter">     <div class="bar">      <div style="padding-bottom:3px;margin:0px;padding-left:3px;padding-right:3px;font-weight:bold;padding-top:3px;" class="tools">       代码         <a style="color:#108ac6;" title="收藏这段代码" href="/misc/goto?guid=4959500743487817234"></a>      </div>     </div>     <ol style="border-bottom:#d1d7dc 1px solid;border-left:#d1d7dc 1px solid;padding-bottom:2px;line-height:1.4em;margin:0px 0px 1px;padding-left:0px;padding-right:0px;color:#2b91af;font-size:1em;border-top:#d1d7dc 1px solid;border-right:#d1d7dc 1px solid;padding-top:2px;" class="dp-j">      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//  {</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "phone" : ["12345678", "87654321"], // 数组</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "name" : "yuanzhifei89", // 字符串</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "age" : 100, // 数值</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "address" : { "country" : "china", "province" : "jiangsu" }, // 对象</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//      "married" : false // 布尔值</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#008200;" class="comment">//  }</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#7f0055;font-weight:bold;" class="keyword">private</span> <span style="color:#7f0055;font-weight:bold;" class="keyword">static</span> <span style="color:#7f0055;font-weight:bold;" class="keyword">final</span> String JSON =   </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:blue;" class="string">"{"</span> +  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:blue;" class="string">"   \"phone\" : [\"12345678\", \"87654321\"],"</span> +  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:blue;" class="string">"   \"name\" : \"yuanzhifei89\","</span> +  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:blue;" class="string">"   \"age\" : 100,"</span> +  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:blue;" class="string">"   \"address\" : { \"country\" : \"china\", \"province\" : \"jiangsu\" },"</span> +  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:blue;" class="string">"   \"married\" : false,"</span> +  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:blue;" class="string">"}"</span>;  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#7f0055;font-weight:bold;" class="keyword">try</span> {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    JSONTokener jsonParser = <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> JSONTokener(JSON);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 此时还未读取任何json文本,直接读取就是一个JSONObject对象。</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 如果此时的读取位置在"name" : 了,那么nextValue就是"yuanzhifei89"(String)</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    JSONObject person = (JSONObject) jsonParser.nextValue();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 接下来的就是JSON对象的操作了</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    person.getJSONArray(<span style="color:blue;" class="string">"phone"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    person.getString(<span style="color:blue;" class="string">"name"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    person.getInt(<span style="color:blue;" class="string">"age"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    person.getJSONObject(<span style="color:blue;" class="string">"address"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    person.getBoolean(<span style="color:blue;" class="string">"married"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">} <span style="color:#7f0055;font-weight:bold;" class="keyword">catch</span> (JSONException ex) {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 异常处理代码</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">}  </span></li>     </ol>    </div>    <p></p>    <p><span style="font-size:16px;"><strong>其它的api基本就是用来查看json文本中的文本的</strong><span style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;"> </span></span></p>    <div style="text-align:left;padding-bottom:1px;overflow-x:auto;overflow-y:auto;padding-left:1px;width:694px;padding-right:1px;word-wrap:break-word;margin-left:9px;word-break:break-all;padding-top:1px;" class="dp-highlighter">     <div style="line-height:25px;font-family:Monaco,'DejaVu Sans Mono','Bitstream Vera Sans Mono',Consolas,'Courier New',monospace;" class="bar">      <div style="padding-bottom:3px;margin:0px;padding-left:3px;padding-right:3px;font-weight:bold;padding-top:3px;" class="tools">       代码         <a style="color:#108ac6;" title="收藏这段代码" href="/misc/goto?guid=4959500743487817234"></a>      </div>     </div>     <ol style="border-bottom:#d1d7dc 1px solid;border-left:#d1d7dc 1px solid;padding-bottom:2px;line-height:1.4em;margin:0px 0px 1px;padding-left:0px;padding-right:0px;font-family:Monaco,'DejaVu Sans Mono','Bitstream Vera Sans Mono',Consolas,'Courier New',monospace;color:#2b91af;font-size:1em;border-top:#d1d7dc 1px solid;border-right:#d1d7dc 1px solid;padding-top:2px;" class="dp-j">      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;"><span style="color:#7f0055;font-weight:bold;" class="keyword">try</span> {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    JSONTokener jsonParser = <span style="color:#7f0055;font-weight:bold;" class="keyword">new</span> JSONTokener(JSON);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 继续向下读8个json文本中的字符。此时刚开始,即在{处</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.next(<span style="color:#c00000;" class="number">8</span>); <span style="color:#008200;" class="comment">//{    "phone。tab算一个字符</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 继续向下读1个json文本中的字符</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.next(); <span style="color:#008200;" class="comment">//"</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 继续向下读取一个json文本中的字符。该字符不是空白、同时也不是注视中的字符</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.nextClean(); <span style="color:#008200;" class="comment">//:</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 返回当前的读取位置到第一次遇到'a'之间的字符串(不包括a)。</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.nextString(<span style="color:blue;" class="string">'a'</span>); <span style="color:#008200;" class="comment">//  ["12345678", "87654321"],    "n(前面有两个空格)</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 返回当前读取位置到第一次遇到字符串中(如"0089")任意字符之间的字符串,同时该字符是trimmed的。(此处就是第一次遇到了89)</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.nextTo(<span style="color:blue;" class="string">"0089"</span>); <span style="color:#008200;" class="comment">//me" : "yuanzhifei</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 读取位置撤销一个</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.back();  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.next(); <span style="color:#008200;" class="comment">//i</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 读取位置前进到指定字符串处(包括字符串)</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.skipPast(<span style="color:blue;" class="string">"address"</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.next(<span style="color:#c00000;" class="number">8</span>); <span style="color:#008200;" class="comment">//" : { "c</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">      </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 读取位置前进到执行字符处(不包括字符)</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.skipTo(<span style="color:blue;" class="string">'m'</span>);  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    jsonParser.next(<span style="color:#c00000;" class="number">8</span>); <span style="color:#008200;" class="comment">//married"</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">} <span style="color:#7f0055;font-weight:bold;" class="keyword">catch</span> (JSONException ex) {  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">    <span style="color:#008200;" class="comment">// 异常处理代码</span>  </span></li>      <li style="border-left:#d1d7dc 1px solid;padding-bottom:0px;line-height:18px;background-color:#fafafa;margin:0px 0px 0px 38px;padding-left:10px;padding-right:0px;font-size:1em;padding-top:0px;"><span style="color:black;">}  </span></li>     </ol>    </div>    <p><span style="font-size:16px;"><span style="line-height:18px;font-family:Monaco,'DejaVu Sans Mono','Bitstream Vera Sans Mono',Consolas,'Courier New',monospace;font-size:16px;">      以下是一个标准的JSON请求实现过程:</span><br /> </span></p>    <p></p>    <pre class="brush:java; toolbar: true; auto-links: false;">HttpPost request = new HttpPost(url);   // 先封装一个 JSON 对象   JSONObject param = new JSONObject();   param.put("name", "rarnu");   param.put("password", "123456");   // 绑定到请求 Entry   StringEntity se = new StringEntity(param.toString());    request.setEntity(se);   // 发送请求   HttpResponse httpResponse = new DefaultHttpClient().execute(request);   // 得到应答的字符串,这也是一个 JSON 格式保存的数据   String retSrc = EntityUtils.toString(httpResponse.getEntity());   // 生成 JSON 对象   JSONObject result = new JSONObject( retSrc);   String token = result.get("token"); </pre>    <br />    <span style="font-size:16px;">        下面这个是自己修改别人的小例子,主要是加一些注释和讲解,这个例子主要是使用android进行json解析。</span>    <br style="text-align:left;line-height:25px;font-family:Helvetica,Tahoma,Arial,sans-serif;font-size:14px;" />    <pre class="brush:xml; toolbar: true; auto-links: false;">单数据{'singer':{'id':01,'name':'tom','gender':'男'}}  多个数据{"singers":[          {'id':02,'name':'tom','gender':'男'},           {'id':03,'name':'jerry,'gender':'男'},  {'id':04,'name':'jim,'gender':'男'},  {'id':05,'name':'lily,'gender':'女'}]}                                                                            </pre>    <span style="text-align:left;font-size:16px;">        下面的类主要是解析单个数据parseJson()和多个数据的方法parseJsonMulti():</span>    <br style="text-align:left;" />    <pre class="brush:java; toolbar: true; auto-links: false;">public class JsonActivity extends Activity {   /** Called when the activity is first created. */   private TextView tvJson;   private Button btnJson;   private Button btnJsonMulti;   @Override   public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    tvJson = (TextView) this.findViewById(R.id.tvJson);    btnJson = (Button) this.findViewById(R.id.btnJson);    btnJsonMulti = (Button) this.findViewById(R.id.btnJsonMulti);    btnJson.setOnClickListener(new View.OnClickListener() {     @Override     public void onClick(View v) {      // url      // String strUrl = "http://10.158.166.110:8080/AndroidServer/JsonServlet";      String strUrl = ServerPageUtil.getStrUrl(UrlsOfServer.JSON_SINGER);      //获得返回的Json字符串      String strResult = connServerForResult(strUrl);      //解析Json字符串      parseJson(strResult);     }    });    btnJsonMulti.setOnClickListener(new View.OnClickListener() {     @Override     public void onClick(View v) {      String strUrl = ServerPageUtil.getStrUrl(UrlsOfServer.JSON_SINGERS);      String strResult = connServerForResult(strUrl);      //获得多个Singer      parseJsonMulti(strResult);     }    });   }   private String connServerForResult(String strUrl) {    // HttpGet对象    HttpGet httpRequest = new HttpGet(strUrl);    String strResult = "";    try {     // HttpClient对象     HttpClient httpClient = new DefaultHttpClient();     // 获得HttpResponse对象     HttpResponse httpResponse = httpClient.execute(httpRequest);     if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {      // 取得返回的数据      strResult = EntityUtils.toString(httpResponse.getEntity());     }    } catch (ClientProtocolException e) {     tvJson.setText("protocol error");     e.printStackTrace();    } catch (IOException e) {     tvJson.setText("IO error");     e.printStackTrace();    }    return strResult;   }   // 普通Json数据解析   private void parseJson(String strResult) {    try {     JSONObject jsonObj = new JSONObject(strResult).getJSONObject("singer");     int id = jsonObj.getInt("id");     String name = jsonObj.getString("name");     String gender = jsonObj.getString("gender");     tvJson.setText("ID号"+id + ", 姓名:" + name + ",性别:" + gender);    } catch (JSONException e) {     System.out.println("Json parse error");     e.printStackTrace();    }   }      //解析多个数据的Json  private void parseJsonMulti(String strResult) {    try {     JSONArray jsonObjs = new JSONObject(strResult).getJSONArray("singers");     String s = "";     for(int i = 0; i < jsonObjs.length() ; i++){      JSONObject jsonObj = ((JSONObject)jsonObjs.opt(i))      .getJSONObject("singer");      int id = jsonObj.getInt("id");      String name = jsonObj.getString("name");      String gender = jsonObj.getString("gender");      s +=  "ID号"+id + ", 姓名:" + name + ",性别:" + gender+ "\n" ;     }     tvJson.setText(s);    } catch (JSONException e) {     System.out.println("Jsons parse error !");     e.printStackTrace();    }   }  } </pre>