字符串转成JSON（其中str为字符串）

Json::Reader Reader;	Json::Value DevJson;	Reader.parse(str,DevJson);	int dev_id = DevJson["dev_id"].asInt();	int index = DevJson["index"].asInt();

　　

JSON转字符串（其中DevStr为字符串）

Json::Value DevJson = DevsJson[i]; std::string DevStr = DevJson.toStyledString(); printf("Msg:%s", DevStr.c_str());

　　

JSON数组解析：

Json::Reader Reader; Json::Value DevsJson; Reader.parse(MsgStr, DevsJson); int siNum = DevsJson.size(); for(int i=0; i < siNum; i++) { Json::Value DevJson = DevsJson[i]; std::string DevStr = DevJson.toStyledString(); printf("Msg:%s", DevStr.c_str()); }

　　

数组添加：

Json::Value root; Json::Value person; person["name"] = "hello world"; person["age"] = 100; root.append(person);

　　

结果：[{"age":100,"name":"hello world"}]

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// MyTest.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include "iostream"#include "time.h"#include "map"#include 
     
      #include 
      
       #include 
       
        #include "json\json.h"  #include "stdint.h"using namespace std;int _tmain(int argc, _TCHAR* argv[]){	Json::Value value;	uint32_t ssrc1 = 5305490;	value["ssrc1"] = ssrc1;	uint32_t ssrc2 = 2152748638;	value["ssrc2"] = ssrc2;		std::string body = value.toStyledString();	cout << body << endl;	Json::Reader reader;	Json::Value data;	reader.parse(body, data, false);	if (data.isMember("ssrc1"))	{		cout << "ssrc1";		if (data["ssrc1"].isInt())			cout << " is Int" << endl;		if (data["ssrc1"].isUInt())			cout << " is UInt" << endl;	}	if (data.isMember("ssrc2"))	{		cout << "ssrc2";		if (data["ssrc2"].isInt())			cout << " is Int" << endl;		if (data["ssrc2"].isUInt())			cout << " is UInt" << endl;	}	uint32_t ssrc11 = data["ssrc1"].asUInt();	uint32_t ssrc21 = data["ssrc2"].asUInt();	cout << "ssrc11:" << ssrc11 << endl;	cout << "ssrc21:" << ssrc21 << endl;	system("pause");	return 0;}
       
      
     

输出结果：