C#处理JSON 数据

https://blog.csdn.net/qq_34897745/article/details/80562518

 

网络中数据传输经常是xml或者json

在一般的开发过程中会经常遇到这样的问题，在别的地方获取的数据接口自己箱拿过来用，会遇见一下几个问题，跨域，拿过来的数据个数不是自己想要的，

1.跨域：

1-1：跨域的解决办法又很多种，前端的js处理

1-2：后台进行处理，一般建议后台处理最好这样的话可以吧相关的数据格式进行处理

一、C#处理简单json数据
json数据：

{"result":"0","res_info":"ok","queryorder_info":"info"}

我这里是以jsonmy1.txt文件的形式保存在d盘json文件夹下。

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; }  
 }

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;
}

二、C#处理包含对象的json数据
json数据：jsonmy2.txt

{"result":"0","res_info":"ok","queryorder_info":{"order_num":"5","orderdetail":"ok"}}

构造对象：

public struct ToJsonMy2
{
    public string result { get; set; } 
    public string res_info { get; set; }
    public queryorder_info queryorder_info;
}
public struct queryorder_info
{
    public string order_num { get; set; }
    public string orderdetail { get; set; }
};

转换过程：

public static void JsonMy2()
{
    string json = Jsonstr("D:\json\jsonmy2.txt");
    JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类
    ToJsonMy2 list = js.Deserialize<ToJsonMy2>(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 order_num = list.queryorder_info.order_num;
    string orderdetail = list.queryorder_info.orderdetail;
}

三、C#处理包含对象、数组的json数据
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（北京天坛南门店）","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":"上海凯顿酒店","ListID":"1000000005201308280002999413","PayAmt":"1140","PayType":"0","RommsCnt":"1","SPTransID":"65197226","State":"4"}]}}

构造对象：

public struct ToJsonMy3
{
    public string result { get; set; }
    public string res_info { get; set; }
    public queryorder_info queryorder_info;
}
public struct queryorder_info
{
    public string order_num { get; set; }
    public List<orderdetail> orderdetail;//数组处理      
};
public struct orderdetail
{
    public string CFTUin { get; set; }
    public string CancelDeadline { get; set; }
    public string CheckInDate { get; set; }
    public string CheckOutDate { get; set; }
    public string CityID { get; set; }
    public string CurrencyCode { get; set; }
    public string HotelID { get; set; }
    public string HotelName { get; set; }
    public string ListID { get; set; }
    public string PayAmt { get; set; }
    public string PayType { get; set; }
    public string RommsCnt { get; set; }
    public string SPTransID { get; set; }
    public string State { get; set; }
};

转换过程：

public static void JsonMy4()
{
    string json = Jsonstr("D:\json\jsonmy4.txt");
    JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类
    ToJsonMy3 list = js.Deserialize<ToJsonMy3>(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 order_num = list.queryorder_info.order_num;
    List<orderdetail> orderdetail = list.queryorder_info.orderdetail;
    string CFTUin = orderdetail[0].CFTUin;
    string HotelName = orderdetail[0].HotelName;
    string ListID = orderdetail[1].ListID;
    string State = orderdetail[2].State;
}

以上代码来自：http://www.jb51.net/article/48027.htm

在项目中也遇到了使用JSON的情况，就把转化过程写一下。

1.从数据库获取的json数据为：

[{"ACTIONVALUE":"-1","CONTENT":"","DEVID":"30000449636001","DEVNAME":"#1空调","DEVTYPE":"46","EVENTTYPE":"","GRIDCODE":"","ISAUTO":"false","MEASURENAME":"通用.低风","MEASURETAG":"GEN.CtrlLowWind","STREAMTYPE":null,"TIMESPAN":""},{"ACTIONVALUE":"0","CONTENT":"","DEVID":"30000449660712","DEVNAME":"#1风机","DEVTYPE":"56","EVENTTYPE":"","GRIDCODE":"","ISAUTO":"false","MEASURENAME":"风机开关","MEASURETAG":"GEN.UnibitCtrl","STREAMTYPE":null,"TIMESPAN":""},{"ACTIONVALUE":"1","CONTENT":"","DEVID":"30000449660710","DEVNAME":"#1警笛","DEVTYPE":"57","EVENTTYPE":"","GRIDCODE":"","ISAUTO":"false","MEASURENAME":"警笛开关","MEASURETAG":"GEN.UnibitCtrl","STREAMTYPE":null,"TIMESPAN":""},{"ACTIONVALUE":"1","CONTENT":"","DEVID":"30000449660708","DEVNAME":"#1灯光","DEVTYPE":"45","EVENTTYPE":"","GRIDCODE":"","ISAUTO":"true","MEASURENAME":"灯光开光","MEASURETAG":"GEN.UnibitCtrl","STREAMTYPE":null,"TIMESPAN":""},{"ACTIONVALUE":"66","CONTENT":"","DEVID":"30000449667767","DEVNAME":"hik1","DEVTYPE":"49","EVENTTYPE":"","GRIDCODE":"110100000103010001","ISAUTO":"true","MEASURENAME":"","MEASURETAG":"GEN.PreSet","STREAMTYPE":"150","TIMESPAN":""},{"ACTIONVALUE":"-1","CONTENT":"","DEVID":"30000449667767","DEVNAME":"hik1","DEVTYPE":"49","EVENTTYPE":"","GRIDCODE":"110100000103010001","ISAUTO":"true","MEASURENAME":"","MEASURETAG":"GEN.VideoRecord","STREAMTYPE":"150","TIMESPAN":""}]

2.构造实体对象：

 public class ActionParam
    {
        //[{"ACTIONVALUE":"1","CONTENT":"","DEVID":"30000449660708","DEVNAME":"#1灯光","DEVTYPE":"45","EVENTTYPE":"","GRIDCODE":"","ISAUTO":"true","MEASURENAME":"灯光开光","MEASURETAG":"GEN.UnibitCtrl","STREAMTYPE":null,"TIMESPAN":""}]
        public int ACTIONVALUE { get; set; }
        public string CONTENT { get; set; }
        public string DEVID { get; set; }
        public string DEVNAME { get; set; }
        public string DEVTYPE { get; set; }
        public string EVENTTYPE { get; set; }
        public string GRIDCODE { get; set; }
        public bool ISAUTO { get; set; }
        public string MEASURENAME { get; set; }
        public string MEASURETAG { get; set; }
        public string STREAMTYPE { get; set; }
        public string TIMESPAN { get; set; }

    }

3.转化为C#中声明的数据格式：

 JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类
 List<ActionParam> listDetail = js.Deserialize<List<ActionParam>>(actionParam);

以为json字符串是数组格式，所以js.Deserialize<T>()泛型中使用List<ActionParam>.

来源：https://www.cnblogs.com/zhangyuanbo12358/p/5590194.html