JsonCpp测试代码使用新API

// ConsoleApplication1.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"


#include <iostream>
#include <fstream>
#include <string>
#include "json.h"
#include <memory>
#include <sstream>

using namespace std;
std::string createJson()
{
	std::string jsonStr;
	Json::Value root, lang, mail;
	Json::StreamWriterBuilder writerBuilder;
	std::ostringstream os;
	std::ofstream out("config.json");//保存在本地文件

	root["Name"] = "monk";
	root["Age"] = 30;

	lang[0] = "C++";
	lang[1] = "Java";
	lang[2] = "Python";
	root["Language"] = lang;

	mail["Netease"] = "[email protected]";
	mail["Hotmail"] = "[email protected]";
	root["E-mail"] = mail;

	std::unique_ptr<Json::StreamWriter> jsonWriter(writerBuilder.newStreamWriter());
	jsonWriter->write(root,&os);
	jsonWriter->write(root, &out);
	jsonStr = os.str();

	std::cout << "Json:\n" << jsonStr << std::endl;
	return jsonStr;
}

bool parseJson(const std::string& info)
{
	if (info.empty()){
		return false;
	}

	bool res;
	JSONCPP_STRING errs;
	Json::Value root, lang, mail;
	Json::CharReaderBuilder readerBuilder;

	Json::CharReader *jsonReader=(readerBuilder.newCharReader());
	//jsonReader->parse()
	res = jsonReader->parse(info.c_str(), info.c_str() + info.length(), &root, &errs);
	if (!res || !errs.empty()){
		std::cout << "parseJson err. " << errs << std::endl;
	}

	std::cout << "Name: " << root["Name"].asString() << std::endl;
	std::cout << "Age: " << root["Age"].asInt() << std::endl;

	lang = root["Language"];
	std::cout << "Language: ";
	for (int i = 0; i < lang.size(); ++i) {
		std::cout << lang[i] << " ";
	}
	std::cout << std::endl;

	mail = root["E-mail"];
	std::cout << "Netease: " << mail["Netease"].asString() << std::endl;
	std::cout << "Hotmail: " << mail["Hotmail"].asString() << std::endl;

	return true;
}

void json_test1()
{
	std::string json_str = createJson();
	parseJson(json_str);
}

int _tmain(int argc, char **argv)
{
	json_test1();
	return 0;
}