[jsoncpp] json 생성,파싱하기.

[라이브러리 설치법.]

http://cinrueom.tistory.com/4?category=791378

 

[환경]

windows 10 Pro

Visual Studio Community 2017

 

[Json 생성하기.]

프로젝트를 생성하고,  헤더파일과 라이브러리 파일을 추가하자.

경로는 알아서...

#include "jsoncpp\include\json\json.h"
#pragma  comment(lib,"jsoncpp\\lib\\lib_json.lib")

 

풀코드를 봅시다.

#include <iostream>
#include <fstream>
#include "jsoncpp\include\json\json.h"
#pragma  comment(lib,"jsoncpp\\lib\\lib_json.lib")
#pragma warning(disable: 4996)                    //error C4996 뜨는 경우
using namespace std;

int main()
{
	string str;
	Json::Value root;
	root["name"] = "KKK";
	root["age"] = 12;
	root["address"] = "kor";
	root["gfriend"] = true;

	Json::Value family;
	family.append("mother");
	family.append("father");
	family.append("brother");
	root["family"] = family;

	Json::StyledWriter writer;
	str = writer.write(root);
	cout << str << endl ;

	std::ofstream ost("test.json");
	ost << str;

	getchar();
	return 0;
}

결과

 

 

 

[Json 파싱하기.]

	ifstream ist("test.json");
	string str;
	for (char p; ist >> p;)
		str += p;

	Json::Reader reader;
	Json::Value root;
	bool parsingRet = reader.parse(str, root);


	cout << root["name"] << endl;
	cout << root["age"] << endl;
	cout << root["address"] << endl;
	cout << root["gfriend"] << endl;

	Json::Value family = root["family"];
	cout << family[0].asString() << endl;
	cout << family[1].asString() << endl;
	cout << family[2].asString() << endl;

 

결과

 

 

[Jsoncpp 도큐먼트]

http://jsoncpp.sourceforge.net/annotated.html