C#解析Json的类
jopen
9年前
using System; using System.Collections.Generic; using System.Web; using System.Text.RegularExpressions; using System.Text; namespace System.JSON { static class JSONConvert { #region 全局变量 private static JSONObject _json = new JSONObject();//寄存器 private static readonly string _SEMICOLON = "@semicolon";//分号转义符 private static readonly string _COMMA = "@comma"; //逗号转义符 #endregion #region 字符串转义 /// <summary> /// 字符串转义,将双引号内的:和,分别转成_SEMICOLON和_COMMA /// </summary> /// <param name="text"></param> /// <returns></returns> private static string StrEncode(string text) { MatchCollection matches = Regex.Matches(text, "///"[^///"]+///""); foreach (Match match in matches) { text = text.Replace(match.Value, match.Value.Replace(":", _SEMICOLON).Replace(",", _COMMA)); } return text; } /// <summary> /// 字符串转义,将_SEMICOLON和_COMMA分别转成:和, /// </summary> /// <param name="text"></param> /// <returns></returns> private static string StrDecode(string text) { return text.Replace(_SEMICOLON, ":").Replace(_COMMA, ","); } #endregion #region JSON最小单元解析 /// <summary> /// 最小对象转为JSONObject /// </summary> /// <param name="text"></param> /// <returns></returns> private static JSONObject DeserializeSingletonObject(string text) { JSONObject jsonObject = new JSONObject(); MatchCollection matches = Regex.Matches(text, "(///"(?<key>[^///"]+)///":///"(?<value>[^,///"]+)///")|(///"(?<key>[^///"]+)///":(?<value>[^,///"//}]+))"); foreach (Match match in matches) { string value = match.Groups["value"].Value; jsonObject.Add(match.Groups["key"].Value, _json.ContainsKey(value) ? _json[value] : StrDecode(value)); } return jsonObject; } /// <summary> /// 最小数组转为JSONArray /// </summary> /// <param name="text"></param> /// <returns></returns> private static JSONArray DeserializeSingletonArray(string text) { JSONArray jsonArray = new JSONArray(); MatchCollection matches = Regex.Matches(text, "(///"(?<value>[^,///"]+)/")|(?<value>[^,//[//]]+)"); foreach (Match match in matches) { string value = match.Groups["value"].Value; jsonArray.Add(_json.ContainsKey(value) ? _json[value] : StrDecode(value)); } return jsonArray; } /// <summary> /// 反序列化 /// </summary> /// <param name="text"></param> /// <returns></returns> private static string Deserialize(string text) { text = StrEncode(text);//转义;和, int count = 0; string key = string.Empty; string pattern = "(//{[^//[//]//{//}]+//})|(//[[^//[//]//{//}]+//])"; while (Regex.IsMatch(text, pattern)) { MatchCollection matches = Regex.Matches(text, pattern); foreach (Match match in matches) { key = "___key" + count + "___"; if (match.Value.Substring(0, 1) == "{") _json.Add(key, DeserializeSingletonObject(match.Value)); else _json.Add(key, DeserializeSingletonArray(match.Value)); text = text.Replace(match.Value, key); count++; } } return text; } #endregion #region 公共接口 /// <summary> /// 序列化JSONObject对象 /// </summary> /// <param name="text"></param> /// <returns></returns> public static JSONObject DeserializeObject(string text) { _json = new JSONObject(); return _json[Deserialize(text)] as JSONObject; } /// <summary> /// 序列化JSONArray对象 /// </summary> /// <param name="text"></param> /// <returns></returns> public static JSONArray DeserializeArray(string text) { _json = new JSONObject(); return _json[Deserialize(text)] as JSONArray; } /// <summary> /// 反序列化JSONObject对象 /// </summary> /// <param name="jsonObject"></param> /// <returns></returns> public static string SerializeObject(JSONObject jsonObject) { StringBuilder sb = new StringBuilder(); sb.Append("{"); foreach (KeyValuePair<string, object> kvp in jsonObject) { if (kvp.Value is JSONObject) { sb.Append(string.Format("/"{0}/":{1},", kvp.Key, SerializeObject((JSONObject)kvp.Value))); } else if (kvp.Value is JSONArray) { sb.Append(string.Format("/"{0}/":{1},", kvp.Key, SerializeArray((JSONArray)kvp.Value))); } else if (kvp.Value is String) { sb.Append(string.Format("/"{0}/":/"{1}/",", kvp.Key, kvp.Value)); } else { sb.Append(string.Format("/"{0}/":/"{1}/",", kvp.Key, "")); } } if (sb.Length > 1) sb.Remove(sb.Length - 1, 1); sb.Append("}"); return sb.ToString(); } /// <summary> /// 反序列化JSONArray对象 /// </summary> /// <param name="jsonArray"></param> /// <returns></returns> public static string SerializeArray(JSONArray jsonArray) { StringBuilder sb = new StringBuilder(); sb.Append("["); for (int i = 0; i < jsonArray.Count; i++) { if (jsonArray[i] is JSONObject) { sb.Append(string.Format("{0},", SerializeObject((JSONObject)jsonArray[i]))); } else if (jsonArray[i] is JSONArray) { sb.Append(string.Format("{0},", SerializeArray((JSONArray)jsonArray[i]))); } else if (jsonArray[i] is String) { sb.Append(string.Format("/"{0}/",", jsonArray[i])); } else { sb.Append(string.Format("/"{0}/",", "")); } } if (sb.Length > 1) sb.Remove(sb.Length - 1, 1); sb.Append("]"); return sb.ToString(); } #endregion } /// <summary> /// 取出JSON对象类 /// </summary> public class JSONObject : Dictionary<string, object> { public new void Add(string key, object value) { System.Type t = value.GetType(); if (t.Name == "String") { value = JSONEncode.StrEncodeForDeserialize(value.ToString()); } base.Add(key, value); } public override string ToString() { return JSONConvert.SerializeObject(this); } public static JSONObject FromObject(string json) { return JSONConvert.DeserializeObject(json); } } /// <summary> /// 取出JSON数组类 /// </summary> public class JSONArray : List<object> { public new void Add(object item) { System.Type t = item.GetType(); if (t.Name == "String") { item = JSONEncode.StrEncodeForDeserialize(item.ToString()); } base.Add(item); } public override string ToString() { return JSONConvert.SerializeArray(this); } public JSONArray FromObject(string json) { return JSONConvert.DeserializeArray(json); } } /// <summary> /// 字符串转义,将"{"、"}"、""" /// </summary> public class JSONEncode { public static readonly string _LEFTBRACES = "@leftbraces";//"{"转义符 public static readonly string _RIGHTBRACES = "@rightbraces";//"}"转义符 public static readonly string _LEFTBRACKETS = "@leftbrackets";//"["转义符 public static readonly string _RIGHTBRACKETS = "@rightbrackets";//"]"转义符 public static readonly string _DOUBLEQUOTATIONMARKS = "@doubleQuotationMarks";//"""转义符 #region 字符串转义 /// <summary> /// 字符串转义,将"{"、"}"、""",分别转换_LEFTBRACES、_RIGHTBRACES、_DOUBLEQUOTATIONMARKS /// </summary> /// <param name="text"></param> /// <returns></returns> public static string StrEncodeForDeserialize(string text) { return text .Replace("{", _LEFTBRACES) .Replace("}", _RIGHTBRACES) .Replace("[", _LEFTBRACKETS) .Replace("]", _RIGHTBRACKETS) .Replace("/"", _DOUBLEQUOTATIONMARKS); } /// <summary> /// 字符串转义,将_LEFTBRACES、_RIGHTBRACES、_DOUBLEQUOTATIONMARKS,分别转换"{"、"}"、""" /// </summary> /// <param name="text"></param> /// <returns></returns> public static string StrDecodeForDeserialize(string text) { return text.Replace(_LEFTBRACES, "{") .Replace(_RIGHTBRACES, "}") .Replace(_LEFTBRACKETS, "[") .Replace(_RIGHTBRACKETS, "]") .Replace(_DOUBLEQUOTATIONMARKS, "/""); } #endregion } }