看最简单的：

#include <iostream>
#include <stdio.h>
#include<unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include<sstream>

// 请自己下载开源的rapidjson
#include "rapidjson/prettywriter.h"
#include "rapidjson/rapidjson.h"
#include "rapidjson/document.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "rapidjson/memorystream.h"

using namespace std;
using rapidjson::Document;
using rapidjson::StringBuffer;
using rapidjson::Writer;
using namespace rapidjson;

void test()
{
	Document document;
	document.SetObject();
	Document::AllocatorType& allocator = document.GetAllocator();
	Value object(rapidjson::kObjectType);
	
	document.AddMember("age",29,allocator);
	document.AddMember("name","taoge",allocator);

	StringBuffer buffer;
	Writer<StringBuffer> writer(buffer);
	document.Accept(writer);
	string str = buffer.GetString();
	
	cout << str << endl;
}

int main(int argc,char *argv[])
{
	test();
	return 0;
}

再看数组：

#include <iostream>
#include <stdio.h>
#include<unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include<sstream>

// 请自己下载开源的rapidjson
#include "rapidjson/prettywriter.h"
#include "rapidjson/rapidjson.h"
#include "rapidjson/document.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "rapidjson/memorystream.h"

using namespace std;
using rapidjson::Document;
using rapidjson::StringBuffer;
using rapidjson::Writer;
using namespace rapidjson;

void test()
{
	Document document;
	document.SetObject();
	Document::AllocatorType& allocator = document.GetAllocator();
	Value array(rapidjson::kArrayType);
	Value object(rapidjson::kObjectType);
	
	object.AddMember("age",30,allocator);
	object.AddMember("name",allocator);
	array.PushBack(object,allocator);

	document.AddMember("json",array,allocator);
	
	StringBuffer buffer;
	Writer<StringBuffer> writer(buffer);
	document.Accept(writer);
	string str = buffer.GetString();
	
	cout << str << endl;
}

int main(int argc,char *argv[])
{
	test();
	return 0;
}

再来看一个：

#include <iostream>
#include <stdio.h>
#include<unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include<sstream>

// 请自己下载开源的rapidjson
#include "rapidjson/prettywriter.h"
#include "rapidjson/rapidjson.h"
#include "rapidjson/document.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "rapidjson/memorystream.h"

using namespace std;
using rapidjson::Document;
using rapidjson::StringBuffer;
using rapidjson::Writer;
using namespace rapidjson;

void test()
{
	Document document;
	document.SetObject();
	Document::AllocatorType& allocator = document.GetAllocator();
	Value array(rapidjson::kArrayType);
	Value object(rapidjson::kObjectType);
	
	object.AddMember("age",allocator);

	document.AddMember("oh1",allocator);
	document.AddMember("oh2","hehe",char *argv[])
{
	test();
	return 0;
}