asp.net 编写的 JSONHelper 类

public class JSONHelper { //对应JSON的singleInfo成员 public string singleInfo = string.Empty; protected string _error = string.Empty; protected bool _success = true; protected long _totalCount = 0; protected System.Collections.ArrayList arrData = new ArrayList(); protected System.Collections.ArrayList arrDataItem = new ArrayList(); public JSONHelper() { // //TODO: 在此处添加构造函数逻辑 // } //对应于JSON的success成员 public bool success { get { return _success; } set { //如设置为true则清空error if (success) _error = string.Empty; _success = value; } } //对应于JSON的error成员 public string error { get { return _error; } set { //如设置error，则自动设置success为false if (value != "") _success = false; _error = value; } } public long totlalCount { get { return _totalCount; } set { _totalCount = value; } } //重置，每次新生成一个json对象时必须执行该方法 public void Reset() { _success = true; _error = string.Empty; singleInfo = string.Empty; arrData.Clear(); arrDataItem.Clear(); } public void AddItem(string name, string value) { arrData.Add("/"" + name + "/":" + "/"" + value + "/""); } public void ItemOk() { arrData.Add("<BR>"); //返回总记录条数 totlalCount++; } //序列化JSON对象，得到返回的JSON代码 public override string ToString() { StringBuilder sb = new StringBuilder(); sb.Append("{"); sb.Append("/"totalCount/":/"" + _totalCount.ToString() + "/","); sb.Append("/"success/":" + _success.ToString().ToLower() + ","); sb.Append("/"error/":/"" + _error.Replace("/"", "///"") + "/","); sb.Append("/"data/":["); int index = 0; sb.Append("{"); if (arrData.Count <= 0) { sb.Append("}"); } else { foreach (string val in arrData) { index++; if (val != "<BR>") { sb.Append(val + ","); } else { sb = sb.Replace(",", "", sb.Length - 1, 1); sb.Append("},"); if (index < arrData.Count) { sb.Append("{"); } } } sb = sb.Replace(",", "", sb.Length - 1, 1); sb.Append("]"); } sb.Append("}"); return sb.ToString(); } public string ToSingleString() { StringBuilder sb = new StringBuilder(); sb.Append("{"); sb.Append("success:" + _success.ToString().ToLower() + ","); sb.Append("data:"); int index = 0; sb.Append("{"); if (arrData.Count <= 0) { sb.Append("}"); } else { foreach (string val in arrData) { index++; if (val != "<BR>") { sb.Append(val + ","); } else { sb = sb.Replace(",", "", sb.Length - 1, 1); sb.Append("},"); if (index < arrData.Count) { sb.Append("{"); } } } sb = sb.Replace(",", "", sb.Length - 1, 1); sb.Append(""); } sb.Append("}"); return sb.ToString(); } }

 

调用方法：

JSONHelper json = new JSONHelper(); json.success = true; json.AddItem("aid", "1"); json.ItemOk(); json.totlalCount=10; string jsons = ""; if (json.totlalCount > 0) { jsons = json.ToString(); } else { jsons = @"{success:false}"; } return jsons;