• asp.net 2.0里也可以用JSON的使用方法


    本人找到一份,可以在asp.net2.0里实现JSON方式传送数据的方法。但是原方法,不能在数据中带有{、}、[、]、"等,所以我做特意做了转意。

    全部代码如下。 

    /// <summary> 
    /// JSON解析类 
    /// </summary> 
    public 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); 



    /// <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); 



    /// <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 

    最后要说的,就是比较马烦的是,现在要取JSON里的值要用到下面的方法

    this.Label2.Text = JsonEncode.StrDecodeForDeserialize(json["domain"].ToString()); 
    this.Label2.Text = JsonEncode.StrDecodeForDeserialize(((JSONArray)json["years"])[4].ToString());

     

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  • 原文地址:https://www.cnblogs.com/sjqq/p/6550474.html
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