boost解析Json

[zzyoucancancan]

#include<iostream>
#include <string>
#include <sstream>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/json_parser.hpp>
//解析下面的json
int main()
{
	using namespace boost::property_tree;
	std::string strJson = "{ \"people\": [{\"heh\":{ \"firstName\": \"Brett\",\"lastName\":\"McLaughlin\", \"email\": \"aaaa\" }},"
		"{\"ab\":{ \"firstName\": \"Jason\", \"lastName\":\"Hunter\",\"email\": \"bbbb\"}},"
		"{\"cd\":{\"firstName\": \"Elliotte\", \"lastName\":\"Harold\", \"email\": \"cccc\" }}]}";
	ptree pt;
	std::stringstream ss(strJson);
	
	read_json<ptree>(ss, pt);//读取到pt中去

	ptree people;
	people = pt.get_child("people");
	for (auto p : people)
	{
	//我想知道这个first到底是什么内容，我以为是上面的"heh","ab","cd",但不能打印出来,那怎么打印这个first
	//刚开始这样的
	//"{ \"people\": [{ \"firstName\": \"Brett\",\"lastName\":\"McLaughlin\", \"email\": \"aaaa\" },"
		//"{ \"firstName\": \"Jason\", \"lastName\":\"Hunter\",\"email\": \"bbbb\"},"
		//"{\"firstName\": \"Elliotte\", \"lastName\":\"Harold\", \"email\": \"cccc\" }]}";
		std::cout << p.first << std::endl;
	}

	getchar();
	return 0;
}

[zzyoucancancan]

	std::string json = "{\"A\":1,\"B\":{\"C\":2,\"D\":3},\"E\":[{\"F\":4},{\"F\":5}]}";
	boost::property_tree::ptree pt,child1,child2 ;
	std::stringstream ss(json) ;
	boost::property_tree::read_json(ss, pt);
	child1 = pt.get_child("B");
	//针对树遍历
	for(auto c:child1)
	{
		cout<< c.first<<c.second.data()<<endl;//这样可以打印出first
	}

[china_jeffery]

楼主这是在分享呀

[平头哥哥]

引用 楼主 zzyoucancancan 的回复:

#include<iostream>
#include <string>
#include <sstream>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/json_parser.hpp>
//解析下面的json
int main()
{
	using namespace boost::property_tree;
	std::string strJson = "{ \"people\": [{\"heh\":{ \"firstName\": \"Brett\",\"lastName\":\"McLaughlin\", \"email\": \"aaaa\" }},"
		"{\"ab\":{ \"firstName\": \"Jason\", \"lastName\":\"Hunter\",\"email\": \"bbbb\"}},"
		"{\"cd\":{\"firstName\": \"Elliotte\", \"lastName\":\"Harold\", \"email\": \"cccc\" }}]}";
	ptree pt;
	std::stringstream ss(strJson);
	
	read_json<ptree>(ss, pt);//读取到pt中去

	ptree people;
	people = pt.get_child("people");
	for (auto p : people)
	{
	//我想知道这个first到底是什么内容，我以为是上面的"heh","ab","cd",但不能打印出来,那怎么打印这个first
	//刚开始这样的
	//"{ \"people\": [{ \"firstName\": \"Brett\",\"lastName\":\"McLaughlin\", \"email\": \"aaaa\" },"
		//"{ \"firstName\": \"Jason\", \"lastName\":\"Hunter\",\"email\": \"bbbb\"},"
		//"{\"firstName\": \"Elliotte\", \"lastName\":\"Harold\", \"email\": \"cccc\" }]}";
		std::cout << p.first << std::endl;
	}

	getchar();
	return 0;
}

mark

[排山和倒海]

哈哈，问题都没问。。。。

[零辰]

楼主直接散分吧