C++ 基于rapidjson对json字符串的进行序列化与反序列化

json字符串的解析以封装在我们开发过程中经常见到, 尤其在socket通信上面, 在一次项目中碰到json字符串的进行解析, 而公司有没有封装好的库, 于是就自己基于开源的库进行了一次封装, 接下是使用案例, 如果感觉可以, 就去下载我的源代码自己编译一个库出来(能直接编译通过, 无任何依赖),

下载地址: https://download.csdn.net/download/weixin_41370313/11457996

jsonObjDefine.h

#pragma once
#include "../LibJosnSerial/JsonBase.h"
#include <string>
using namespace JsonBaseHelper;
using namespace std;
class Person : public JsonBase
{
public:
	string name;
	string sex;
	int age;
	int ident;
	void ToWrite(Writer<StringBuffer> &writer)
	{
		RapidjsonWriteBegin(writer);
		RapidjsonWriteString(name);
		RapidjsonWriteString(sex);
		RapidjsonWriteInt(age);
		RapidjsonWriteInt(ident);
		RapidjsonWriteEnd();
	}
	void ParseJson(const Value& val)
	{
		RapidjsonParseBegin(val);
		RapidjsonParseToString(name);
		RapidjsonParseToString(sex);
		RapidjsonParseToInt(age);
		RapidjsonParseToInt(ident);
		RapidjsonParseEnd();
	}
};
 
class MacPropery : public JsonBase
{
public:
	int count;
	float perMachine;
	int machineCount;
	string operationTime;
	void ToWrite(Writer<StringBuffer> &writer)
	{
		RapidjsonWriteBegin(writer);
		RapidjsonWriteInt(count);
		RapidjsonWriteDouble(perMachine);
		RapidjsonWriteInt(machineCount);
		RapidjsonWriteString(operationTime);
		RapidjsonWriteEnd();
	};
	void ParseJson(const Value& val)
	{
		RapidjsonParseBegin(val);
		RapidjsonParseToInt(count);
		RapidjsonParseToDouble(perMachine);
		RapidjsonParseToInt(machineCount);
		RapidjsonParseToString(operationTime);
		RapidjsonParseEnd();
	};
};
 
class PrintMacInfo : public JsonBase
{
public:
	int code;
	string message;
	JsonArray<MacPropery> data;
	void ToWrite(Writer<StringBuffer> &writer)
	{
		RapidjsonWriteBegin(writer);
		RapidjsonWriteInt(code);
		RapidjsonWriteString(message);
		RapidjsonWriteClass(data);
		RapidjsonWriteEnd();
	};
	void ParseJson(const Value& val)
	{
		RapidjsonParseBegin(val);
		RapidjsonParseToInt(code);
		RapidjsonParseToString(message);
		RapidjsonParseToClass(data);
		RapidjsonParseEnd();
	};
};

　　测试demo

#include <iostream>
#include "JsonObjDefine.h" //定义json对象头文件
#include <iostream>
//基于rapidjson封装的库
#pragma comment(lib, "..\\LibJosnSerial\\Bin\\LibJosnSerial.lib")
int main()
{
    std::cout << "基础json字符串转换\n";
	Person per;
	per.age = 99;
	per.ident = 123;
	per.name = "测试";
	per.sex = "男性";
	string strPerJson = JsonBase::SerializeJson(&per);
	std::cout << "Person -> Json字符串:" << std::endl << strPerJson << std::endl;
	std::cout << endl;
	std::cout << "Json字符串 -> Person" << std::endl;
	Person perRet;
	JsonBase::DeserializeJson(&perRet, strPerJson);
	cout << "age: " << perRet.age << endl;
	cout << "ident: " << perRet.ident << endl;
	cout << "name: " << perRet.name << endl;
	cout << "sex: " << perRet.sex << endl;
	std::cout << endl;
 
	std::cout << "有嵌套json字符串转换\n";
	PrintMacInfo printMac;
	printMac.code = 0;
	printMac.message = "测试json字符串";
	MacPropery mac_1;
	mac_1.count = 6031;
	mac_1.perMachine = 861.57;
	mac_1.machineCount = 7;
	mac_1.operationTime = "2012";
	printMac.data.objList.push_back(mac_1);
	MacPropery mac_2;
	mac_2.count = 20754;
	mac_2.perMachine = 2964.86;
	mac_2.machineCount = 7;
	mac_2.operationTime = "2018";
	printMac.data.objList.push_back(mac_2);
	string strJson = JsonBase::SerializeJson(&printMac);
	std::cout << "PrintMacInfo -> Json字符串:"<< std::endl << strJson<<std::endl;
	std::cout << endl;
	std::cout << "Json字符串 -> PrintMacInfo" << endl;
	PrintMacInfo printMacRet;
	JsonBase::DeserializeJson(&printMacRet, strJson);
	cout << "code:"<< printMacRet.code << endl;
	cout << "message" << printMacRet.message << endl;
	int index = 1;
	for each(auto it in printMacRet.data.objList)
	{
		cout << "data_MacPro_"<<index<<": "<< it.count << endl;
		cout << "data_MacPro_"<<index<<": "<< it.machineCount << endl;
		cout << "data_MacPro_"<<index<<": "<< it.perMachine << endl;
		cout << "data_MacPro_"<<index<<": "<< it.operationTime << endl;
		cout << endl;
		index++;
	}
	getchar();
}

　　打印输出:

普通字符串格式

{
"name": "测试",
"sex": "男性",
"age": 99,
"ident": 123
}

有嵌套json字符串格式

{
"code": 0,
"message": "测试json字符串",
"data": [{
"count": 6031,
"perMachine": 861.5700073242188,
"machineCount": 7,
"operationTime ": "2012 "
},
{
"count ": 20754,
"perMachine ": 2964.860107421875,
"machineCount ": 7,
"operationTime ": "2018 "
}
]
}