ASP.NET JSON，转http://www.360doc.com/content/14/0615/21/18155648_386887590.shtml
概念介绍
还是先简单说说Json的一些例子吧。注意，以下概念是我自己定义的，可以参考.net里面的TYPE的模型设计
如果有争议，欢迎提出来探讨！
1.最简单：
{"total":0}
total就是值，值是数值，等于0
2. 复杂点
{"total":0,"data":{"377149574" : 1}}
total是值，data是对象，这个对象包含了"377149574"这个值，等于1
3. 最复杂
{"total":0,"data":{"377149574":[{"cid":"377149574"}]}}
total是值，data是对象,377149574是数组，这个数组包含了一些列的对象，例如{"cid":"377149574"}这个对象。
有了以上的概念，就可以设计出通用的json模型了。
万能JSON源码：
using System;
using System.Collections.Generic;
using System.Text;
namespace Pixysoft.Json
{
public class CommonJsonModelAnalyzer
{
protected string _GetKey(string rawjson)
{
if (string.IsNullOrEmpty(rawjson))
return rawjson;
rawjson = rawjson.Trim();
string[] jsons = rawjson.Split(new char[] { ':' });
if (jsons.Length < 2)
return rawjson;
return jsons[0].Replace("\"", "").Trim();
}
protected string _GetValue(string rawjson)
{
if (string.IsNullOrEmpty(rawjson))
return rawjson;
rawjson = rawjson.Trim();
string[] jsons = rawjson.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
if (jsons.Length < 2)
return rawjson;
StringBuilder builder = new StringBuilder();
for (int i = 1; i < jsons.Length; i++)
{
builder.Append(jsons[i]);
builder.Append(":");
}
if (builder.Length > 0)
builder.Remove(builder.Length - 1, 1);
string value = builder.ToString();
if (value.StartsWith("\""))
value = value.Substring(1);
if (value.EndsWith("\""))
value = value.Substring(0, value.Length - 1);
return value;
}
protected List<string> _GetCollection(string rawjson)
{
//[{},{}]
List<string> list = new List<string>();
if (string.IsNullOrEmpty(rawjson))
return list;
rawjson = rawjson.Trim();
StringBuilder builder = new StringBuilder();
int nestlevel = -1;
int mnestlevel = -1;
for (int i = 0; i < rawjson.Length; i++)
{
if (i == 0)
continue;
else if (i == rawjson.Length - 1)
continue;
char jsonchar = rawjson[i];
if (jsonchar == '{')
{
nestlevel++;
}
if (jsonchar == '}')
{
nestlevel--;
}
if (jsonchar == '[')
{
mnestlevel++;
}
if (jsonchar == ']')
{
mnestlevel--;
}
if (jsonchar == ',' && nestlevel == -1 && mnestlevel == -1)
{
list.Add(builder.ToString());
builder = new StringBuilder();
}
else
{
builder.Append(jsonchar);
}
}
if (builder.Length > 0)
list.Add(builder.ToString());
return list;
}
}
}
using System; using System.Collections.Generic; using System.Text; namespace Pixysoft.Json { public class CommonJsonModel : CommonJsonModelAnalyzer { private string rawjson; private bool isValue = false; private bool isModel = false; private bool isCollection = false; internal CommonJsonModel(string rawjson) { this.rawjson = rawjson; if (string.IsNullOrEmpty(rawjson)) throw new Exception("missing rawjson"); rawjson = rawjson.Trim(); if (rawjson.StartsWith("{")) { isModel = true; } else if (rawjson.StartsWith("[")) { isCollection = true; } else { isValue = true; } } public string Rawjson { get { return rawjson; } } public bool IsValue() { return isValue; } public bool IsValue(string key) { if (!isModel) return false; if (string.IsNullOrEmpty(key)) return false; foreach (string subjson in base._GetCollection(this.rawjson)) { CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key) { CommonJsonModel submodel = new CommonJsonModel(model.Value); return submodel.IsValue(); } } return false; } public bool IsModel() { return isModel; } public bool IsModel(string key) { if (!isModel) return false; if (string.IsNullOrEmpty(key)) return false; foreach (string subjson in base._GetCollection(this.rawjson)) { CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key) { CommonJsonModel submodel = new CommonJsonModel(model.Value); return submodel.IsModel(); } } return false; } public bool IsCollection() { return isCollection; } public bool IsCollection(string key) { if (!isModel) return false; if (string.IsNullOrEmpty(key)) return false; foreach (string subjson in base._GetCollection(this.rawjson)) { CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key) { CommonJsonModel submodel = new CommonJsonModel(model.Value); return submodel.IsCollection(); } } return false; } /// <summary> /// 当模型是对象，返回拥有的key /// </summary> /// <returns></returns> public List<string> GetKeys() { if (!isModel) return null; List<string> list = new List<string>(); foreach (string subjson in base._GetCollection(this.rawjson)) { string key = new CommonJsonModel(subjson).Key; if (!string.IsNullOrEmpty(key)) list.Add(key); } return list; } /// <summary> /// 当模型是对象，key对应是值，则返回key对应的值 /// </summary> /// <param name="key"></param> /// <returns></returns> public string GetValue(string key) { if (!isModel) return null; if (string.IsNullOrEmpty(key)) return null; foreach (string subjson in base._GetCollection(this.rawjson)) { CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key) return model.Value; } return null; } /// <summary> /// 模型是对象，key对应是对象，返回key对应的对象 /// </summary> /// <param name="key"></param> /// <returns></returns> public CommonJsonModel GetModel(string key) { if (!isModel) return null; if (string.IsNullOrEmpty(key)) return null; foreach (string subjson in base._GetCollection(this.rawjson)) { CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key) { CommonJsonModel submodel = new CommonJsonModel(model.Value); if (!submodel.IsModel()) return null; else return submodel; } } return null; } /// <summary> /// 模型是对象，key对应是集合，返回集合 /// </summary> /// <param name="key"></param> /// <returns></returns> public CommonJsonModel GetCollection(string key) { if (!isModel) return null; if (string.IsNullOrEmpty(key)) return null; foreach (string subjson in base._GetCollection(this.rawjson)) { CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key) { CommonJsonModel submodel = new CommonJsonModel(model.Value); if (!submodel.IsCollection()) return null; else return submodel; } } return null; } /// <summary> /// 模型是集合，返回自身 /// </summary> /// <returns></returns> public List<CommonJsonModel> GetCollection() { List<CommonJsonModel> list = new List<CommonJsonModel>(); if (IsValue()) return list; foreach (string subjson in base._GetCollection(rawjson)) { list.Add(new CommonJsonModel(subjson)); } return list; } /// <summary> /// 当模型是值对象，返回key /// </summary> private string Key { get { if (IsValue()) return base._GetKey(rawjson); return null; } } /// <summary> /// 当模型是值对象，返回value /// </summary> private string Value { get { if (!IsValue()) return null; return base._GetValue(rawjson); } } } }
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