Question

C#字符串转成JSON对象，并解析出里面的数据

代码如下：
_Cookie = new CookieCollection();
HttpWebRequest request = HttpWebResponseUtility.CreateGetHttpRequest(_serverUrl, null, null, _Cookie);
//request.CookieContainer = _Cookie;

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
try
{

StreamReader stream = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

string boday = stream.ReadToEnd();
Object obj = JsonConvert.DeserializeObject(boday);

//JObject obj = (JObject)RequestHelper.getData(boday);
MessageBox.Show("W");
/*
if (obj != null && obj["uid"] != null && obj["uid"].ToString().Equals("1"))
{

BeginInvoke(new ShowFrom(LoginHandle));
}
else
{
BeginInvoke(new ShowFrom(delegate() { MessageBox.Show("用户名或密码错误"); }));
}
* */
}
catch
{
}
}
}
catch
{
MessageBox.Show("出错");
}
}

Object obj = JsonConvert.DeserializeObject(boday);这句程序无法运行，不知道应该怎么做才能让返回流中的字符串变成JSON对象，并且解析里面的数据来做判断是否登陆

Answer 1

构造对象：

public struct ToJsonMy

{

public string result { get; set; }  //属性的名字，必须与json格式字符串中的"key"值一样。

public string res_info { get; set; }

public string queryorder_info { get; set; }   }

转换过程：

public static void JsonMy()

{

string json = Jsonstr("D:\\json\\jsonmy1.txt");//Jsonstr函数读取json数据的文本txt                      　　　　　　 

JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类

ToJsonMy list = js.Deserialize<ToJsonMy>(json);    //将json数据转化为对象类型并赋值给list

string result = list.result;                  　　　　　　　

string res_info = list.res_info;

string queryorder_info = list.res_info;

}

json包含对象数组 json数据：jsonmy4.txt

{"result":"0","res_info":"ok","queryorder_info":{"order_num":"5","orderdetail":[{"CFTUin":"769839263","CancelDeadline":"2013-09-12 23:00:00","CheckInDate":"2013-09-12 00:00:00","CheckOutDate":"2013-09-13 00:00:00","CityID":"0101","CurrencyCode":"RMB","HotelID":"00301105","HotelName":"乐家连锁（北京天坛南门店）（原速8酒店（北京天坛南店）",

"ListID":"1000000005201308280002999652","PayAmt":"228","PayType":"0","RommsCnt":"1","SPTransID":"65202157","State":"4"},{"CFTUin":"248486133","CancelDeadline":"2013-10-13 23:00:00","CheckInDate":"2013-10-13 00:00:00","CheckOutDate":"2013-10-18 00:00:00","CityID":"0201","CurrencyCode":"RMB","HotelID":"10201314","HotelName"

"ListID":"1000000005201308280002999413","PayAmt":"1140","PayType":"0","RommsCnt":"1","SPTransID":"65197226","State":"4"}]}}

Answer 2

你要先分析boday 这个字符串，先去确认它是不是个json格式的数据，然后根据它的结构创建一个相应的类（假设叫XXX类），之后才能进行json的解析：

XXX xxx=JsonConvert.DeserializeObject<XXX>(boday);

Answer 3

JavascriptSerializble

Answer 4

给你一个网址，你看下如何转化的。http://www.cnblogs.com/sun-sjmeng/archive/2012/09/08/2660559.html

Answer 5

可考虑使用第三方dll：NewtonSoft.Json.dll