Dynamic analysis of Json

Original: dynamic analysis of Json

 Recently dynamically parse json in the project, but there are many ways to resolve json, how to resolve the problem is that we need to consider? For example Newtonsoft.Json.Linq provided under JToken, JObject the like, JsonConvert available under Newtonsoft.Json.

JObject	For operating the objects json
JArray	For operating the array json
JValue	An array of values
JProperty	Denotes object attribute to "key / value" form
JToken	Linq used to store the results of queries to the Json

 

 

 

 

 

 

We mainly describes the different analytical methods applicable scenarios and usage today:

1、JObject

　　JObject operation target, if used to resolve other types will be reported json Newtonsoft.Json.JsonReaderException. 

JObject jObject = new JObject();
jObject.Add(new JProperty("name", "caixukun"));
jObject.Add(new JProperty("skill", new JObject(new JProperty("id", 1), new JProperty("name", "撩妹"))));
Console.WriteLine(jObject.ToString());
结果：
{
   "name": "caixukun",
　　"skill": {
　　　　"id": 1,
　　　　"name": "撩妹"
　　}
} 

 2, JArray

　　JArray for operating the array, if used to resolve other types will be reported json Newtonsoft.Json.JsonReaderException. 

JArray arr = new JArray();
arr.Add(new JValue(1));
arr.Add(new JValue(2));
arr.Add(new JValue(3));
Console.WriteLine(arr.ToString());
结果：
[
　1,
　2,
　3
]

3, JToken 

string json = "{\"Name\" : \"Jack\", \"Age\" : 34, \"Colleagues\" : [{\"Name\" : \"Tom\" , \"Age\":44},{\"Name\" : \"Abel\",\"Age\":29}] }";
// 获取员工名称
JObject jObject = JObject.Parse(json);
var name = jObject.Value<string>("Name");
Console.WriteLine(name);
// 获取员工年龄
JToken jToken = jObject.SelectToken("Age");
Console.WriteLine(jToken.ToString());
"Colleagues"
JToken jToken1 = jobject [get Colleagues information//];
Console.WriteLine(jToken1.ToString());
Console.WriteLine("=============================");
// 获取员工同事的所有姓名
var names = from staff in jToken1.Children()
            select (string)staff["Name"];
// var names = jObject.SelectToken("Colleagues").Select(p => p["Name"]).ToList();
foreach (var item in names)
{
    Console.WriteLine(item);
}
Console.WriteLine("=============================" );
 // modify Jack age 
jobject [ " Age " ] = 99 ; 
Console.WriteLine (jObject.ToString ()); 
// modify colleagues Tome age 
jToken1 [ 0 ] [ " Age " ] = 45 ; 
Console. the WriteLine (jObject.ToString ()); 
Console.WriteLine ( " ============================= " );
 // Abel departure the 
jobject [ " colleagues " ] [ 1 ] .remove (); 
Console.WriteLine (jObject.ToString ()); 
// remove Jack's colleagues
jObject.Remove ( " Colleagues " ); 
Console.WriteLine (jObject.ToString ()); 
Console.WriteLine ( " ========================= ==== " );
 // Jack department lacks information 
jobject [ " Age " ] .Parent.AddAfterSelf ( new new JProperty ( " department " , " president's Office " ));
 // to a new employee Jerry 
jObject Linda = new new JObject ( new new JProperty ( " the Name " , " Linda " ),new JProperty("Age", "23"));
jObject.Add(new JProperty("Colleagues", new JArray() { linda }));
Console.WriteLine(jObject.ToString());

Reference: https://www.cnblogs.com/klsw/p/5904573.html