Struts2 + Json + Jstl 展示
jopen
8年前
</div> </div>
Struts 配置文件
<package name="information" extends="main" namespace="/inf"> <action name="Information" class="com.example.action.Infomation"> <result type="tiles">information</result> </action> </package>
Action 文件
package cn.netkiller.action; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.StringReader; import java.net.URL; import java.net.URLConnection; import java.nio.charset.Charset; import javax.json.Json; import javax.json.JsonObject; import javax.json.JsonReader; import com.opensymphony.xwork2.Action; import com.opensymphony.xwork2.ActionSupport; public class Infomation extends ActionSupport{ /** * */ private static final long serialVersionUID = 1L; private JsonObject jsonObject = null; private String jsonString = ""; @Override public String execute() throws IOException { String URL = "http://www.example.com/list/json/93/20/0.html"; System.out.printf("%s Requeted URL is %s", this.getClass().getName(), URL); StringBuilder sb = new StringBuilder(); URLConnection urlConn = null; InputStreamReader in = null; try { URL url = new URL(URL); urlConn = url.openConnection(); if (urlConn != null) urlConn.setReadTimeout(60 * 1000); if (urlConn != null && urlConn.getInputStream() != null) { in = new InputStreamReader(urlConn.getInputStream(), Charset.defaultCharset()); BufferedReader bufferedReader = new BufferedReader(in); if (bufferedReader != null) { int cp; while ((cp = bufferedReader.read()) != -1) { sb.append((char) cp); } bufferedReader.close(); } } in.close(); jsonString = sb.toString(); System.out.println(jsonString); JsonReader reader = Json.createReader(new StringReader(jsonString)); JsonObject jsonObject = reader.readObject(); this.setJsonObject(jsonObject); reader.close(); // System.out.println(jsonObject.size()); /*for (int i = 0; i < jsonObject.size() - 2; i++) { JsonObject rowObject = jsonObject.getJsonObject(Integer.toString(i)); // System.out.println(rowObject.toString()); System.out.printf("%s\t%s\t%s\n", rowObject.getJsonString("id"), rowObject.getJsonString("title"), rowObject.getJsonString("ctime")); }*/ } catch (Exception e) { throw new RuntimeException("Exception while calling URL:" + URL, e); } return Action.SUCCESS; } public JsonObject getJsonObject() { return jsonObject; } public void setJsonObject(JsonObject jsonObject) { this.jsonObject = jsonObject; } public String getJsonString() { return jsonString; } public void setJsonString(String jsonString) { this.jsonString = jsonString; } } JSP 文件
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="s" uri="/struts-tags"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <table> <c:forEach items="${jsonObject.entrySet()}" var="json" varStatus="status"> <c:if test="${not status.last}"> <tr> <td>${json.key+1}</td> <td>${json.value.getJsonString("id")}</td> <td>${json.value.getJsonString("title")}</td> <td>${json.value.getJsonString("ctime")}</td> </tr> </c:if> </c:forEach> </table> =================== <c:forEach items="${jsonObject.entrySet()}" var="json"> ${json.value.toString()} </c:forEach> =========== <s:property value="jsonString" /> 解决双引号问题
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="s" uri="/struts-tags"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%> <table> <c:forEach items="${jsonObject.entrySet()}" var="json" varStatus="status"> <c:if test="${not status.last}"> <c:set var="id" value="${fn:replace(json.value.getJsonString('id'),'\"', '')}" /> <c:set var="title" value="${fn:replace(json.value.getJsonString('title'),'\"', '')}" /> <c:set var="ctime" value="${fn:replace(json.value.getJsonString('ctime'),'\"', '')}" /> <tr> <td><c:out value="${status.count}" /></td> <td><a href="/inf/Detail.do?id=<c:out value="${id}"/>"><c:out value="${title}" /></a></td> <td><c:out value="${ctime}" /></td> </tr> </c:if> </c:forEach> </table> <c:set var="pages" value="${jsonObject.getJsonObject('pages')}" /> <a href="${pages.first}">首页</a> <a href="${pages.before}">上一页</a> <a href="${pages.next}">下一页</a> <a href="${pages.last}">尾页</a> <span>Count: ${pages.count}, Total: ${pages.total}</span>