rapidjson创建型

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#include <iostream>
#include "rapidjson/document.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include <string>
using namespace std;
using namespace rapidjson;
int main() {
    Document d;
    d.SetObject();
    std::string s = "123";
    rapidjson::Document::AllocatorType& allocator = d.GetAllocator();
    //生成含有数组的document，注意在rapidjson中所有的数据都是一个Value，数组的本质也是一个Array;
    rapidjson::Value arr(rapidjson::kArrayType);
    arr.PushBack("1", allocator);
    arr.PushBack("2", allocator);
    arr.PushBack(rapidjson::StringRef(s.c_str()), allocator);
    //生成数组中包含有多个obj的数组
    rapidjson::Value o1;
    o1.SetObject();
    o1.AddMember("o1", 1, allocator);
    arr.PushBack(o1, allocator);
    rapidjson::Value o2;
    o2.SetObject();
    o2.AddMember("o2", 2, allocator);
    arr.PushBack(o2, allocator);
    d.AddMember("arr", arr, allocator);
    rapidjson::StringBuffer buffer;
    rapidjson::Writer<StringBuffer> writer(buffer);
    d.Accept(writer);
    std::cout << buffer.GetString() << std::endl;
    return 0;
}