C++ 基於rapidjson對json字符串的進行序列化與反序列化

json字符串的解析以封裝在咱們開發過程當中常常見到, 尤爲在socket通訊上面, 在一次項目中碰到json字符串的進行解析, 而公司有沒有封裝好的庫, 因而就本身基於開源的庫進行了一次封裝, 接下是使用案例, 若是感受能夠, 就去下載個人源代碼本身編譯一個庫出來(能直接編譯經過, 無任何依賴), 

下載地址: 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();
	};
};

　　測試demo

#include <iostream>
#include "JsonObjDefine.h" //定義json對象頭文件
#include <iostream>
//基於rapidjson封裝的庫
#pragma comment(lib, "..\\LibJosnSerial\\Bin\\LibJosnSerial.lib")
int main()
{
    std::cout << "基礎json字符串轉換\n"; 
	Person per;
	per.age = 99;
	per.ident = 123;
	per.name = "測試";
	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字符串轉換\n";
	PrintMacInfo printMac;
	printMac.code = 0;
	printMac.message = "測試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();
}

　　打印輸出:

普通字符串格式

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

有嵌套json字符串格式

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