c# 使用Newtonsoft.Json 对数据进行打包与解析

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Newtonsoft.Json.dll 的下载就不多说了，网上很多

1.打包

可以根据自己的消息需求，建立一个类存在消息类容

如：public class Message

{

public string msgtype;

public string msgreq;

public string dpto;

}

打包的方法为：

Message msg = new Message();

msg.msgtype = "login";

msg.msgreq = "1";

msg.dpto = "user";

string strJson = GetMessage(msg);

public static string GetMessage(Message msg)
{
string result = JsonConvert.SerializeObject(msg, Formatting.Indented, new JsonSerializerSettings() { NullValueHandling = NullValueHandling.Ignore });

//SerializeObject 第一个参数是放的Message的对象，第一个参数是指定是否格式化，第三个是格式化的方式(这里选择的是忽略值为空的属性)
return result;
}

解包的方法：

public static string GetSValue(string message, string key)
{
JObject jobject = (JObject)JsonConvert.DeserializeObject(message);

string resultStr = "";
if (key.IndexOf(".") > -1)
{
string[] sArray = key.Split('.');
foreach (string i in sArray)
{
if (i == sArray[sArray.Count() - 1])
{
resultStr = jobject[i].ToString();
}
else
{
jobject = (JObject)jobject[i];
}
}
}
else
{
resultStr = jobject[key].ToString();
}

return resultStr;
}

public static JObject GetOValue(string message, string key)
{
JObject jobject = (JObject)JsonConvert.DeserializeObject(message);
JObject jo = new JObject();
if (key.IndexOf(".") > -1)
{
string[] sArray = key.Split('.');
foreach (string i in sArray)
{
if (i == sArray[sArray.Count() - 1])
{
jo = (JObject)jobject[i];
}
else
{
jobject = (JObject)jobject[i];
}
}
}
else
{
jo = (JObject)jobject[key];
}
return jo;
}

public static JArray GetAValue(string message, string key)
{
JObject jobject = (JObject)JsonConvert.DeserializeObject(message);
JArray jarray = new JArray();
if (key.IndexOf(".") > -1)
{
string[] sArray = key.Split('.');
foreach (string i in sArray)
{
if (i == sArray[sArray.Count() - 1])
{
jarray = (JArray)jobject[i];
}
else
{
jobject = (JObject)jobject[i];
}
}
}
else
{
jarray = (JArray)jobject[key];
}

return jarray;
}

这里提供了三种不同返回的解包方式，可根据自己需要调用不用的函数

以下面的Json 为例：

{

"msgtype": "login",
"msgseq": "111",
"msgdata": {
"usrauth": ["Event", "Doors", "TA"],
"token": "1804289383",
"servlist": [["1", "1", "server1", "192.168.1.252", "30000", "1234567890"], ["2", "2", "server2", "192.168.1.253", "30000", "1234567891"]]
},

"msgresult": "ok"

}

如果现在要获取msgseq 的value

rec 为接收的Json字符串

Console.WriteLine(GetSValue(rec,"msgseq"))

获取msgdata下面的msgresult

Console.WriteLine(GetSValue(rec,"msgdata.msgseq"));

获取msgdata下面的usrauth 数组

JArray jarray = GetAValue(rec, "msgdata.usrauth");
for (int i = 0; i < jarray.Count; i++)
{
Console.WriteLine(jarray[i].ToString());
}

获取msgdata下面的servlist

List<Server> ser = new List<Server>();

JArray jarray = OperatorMsg.GetAValue(rec, "msgdata.servlist");
for (int i = 0; i < jarray.Count; i++)
{
JArray ja = (JArray)jarray[i];
Server serv = new Server();
serv.id = int.Parse(ja[1].ToString());
serv.name = ja[2].ToString();
serv.ip = ja[3].ToString();
serv.port = int.Parse(ja[4].ToString());
serv.token = int.Parse(ja[5].ToString());
ser.Add(serv);
}

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