本文主要是介绍rapidjson组装map和数组array的代码示例，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
直接上码：
#include <iostream>
#include <map>// 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"
#include <sys/types.h>
#include <vector>using namespace std;
using rapidjson::Document;
using rapidjson::StringBuffer;
using rapidjson::Writer;
using namespace rapidjson;// 注意int和uint64_t
map<string, uint64_t> g_mChildInt;
map<string, string> g_mChildString;
string formJson(const map<string, int> &mInt, const map<string, string> &mString,const string &strChild="", const map<string, uint64_t> &mChildInt=g_mChildInt, const map<string, string> &mChildString=g_mChildString,const string &strChild2="", const map<string, uint64_t> &mChildInt2=g_mChildInt, const map<string, string> &mChildString2=g_mChildString)
{Document document;Document::AllocatorType& allocator = document.GetAllocator(); Value root(kObjectType);Value key(kStringType); Value value(kStringType); // 当前级别for(map<string, int>::const_iterator it = mInt.begin(); it != mInt.end(); ++it) {key.SetString(it->first.c_str(), allocator); root.AddMember(key, it->second, allocator);}for(map<string, string>::const_iterator it = mString.begin(); it != mString.end(); ++it){key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); root.AddMember(key, value, allocator);}// 孩子级别if(!strChild.empty()){Value child(kObjectType);for(map<string, uint64_t>::const_iterator it = mChildInt.begin(); it != mChildInt.end(); ++it) {key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator);}for(map<string, string>::const_iterator it = mChildString.begin(); it != mChildString.end(); ++it){key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator);}key.SetString(strChild.c_str(), allocator); root.AddMember(key, child, allocator);}// 孩子级别if(!strChild2.empty()){Value child(kObjectType);for(map<string, uint64_t>::const_iterator it = mChildInt2.begin(); it != mChildInt2.end(); ++it) {key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator);}for(map<string, string>::const_iterator it = mChildString2.begin(); it != mChildString2.end(); ++it){key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator);}key.SetString(strChild2.c_str(), allocator); root.AddMember(key, child, allocator);}StringBuffer buffer; Writer<StringBuffer> writer(buffer); root.Accept(writer); return buffer.GetString(); }string formJsonWithArray(const map<string, int> &mInt, const map<string, string> &mString,const string &strChild1, const map<string, uint64_t> &mChildInt, const map<string, string> &mChildString,string &strChild2, vector<map<string, uint64_t> >&mVecChildInt, vector<map<string, string> >&mVecChildString){Document document;Document::AllocatorType& allocator = document.GetAllocator(); Value root(kObjectType);Value key(kStringType); Value value(kStringType); // 当前级别for(map<string, int>::const_iterator it = mInt.begin(); it != mInt.end(); ++it) {key.SetString(it->first.c_str(), allocator); root.AddMember(key, it->second, allocator);}for(map<string, string>::const_iterator it = mString.begin(); it != mString.end(); ++it){key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); root.AddMember(key, value, allocator);}// 孩子级别if(!strChild1.empty()){Value child(kObjectType);for(map<string, uint64_t>::const_iterator it = mChildInt.begin(); it != mChildInt.end(); ++it) {key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator);}for(map<string, string>::const_iterator it = mChildString.begin(); it != mChildString.end(); ++it){key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator);}key.SetString(strChild1.c_str(), allocator); root.AddMember(key, child, allocator);}// 孩子级别unsigned int uiSize1 = mVecChildInt.size();unsigned int uiSize2 = mVecChildString.size();if(!strChild2.empty() && uiSize1 == uiSize2){Value array(rapidjson::kArrayType); for(unsigned int i = 0; i < uiSize1; ++i){Value child(kObjectType);for(map<string, uint64_t>::iterator it = mVecChildInt[i].begin(); it != mVecChildInt[i].end(); ++it) {key.SetString(it->first.c_str(), allocator); child.AddMember(key, it->second, allocator);}for(map<string, string>::iterator it = mVecChildString[i].begin(); it != mVecChildString[i].end(); ++it){key.SetString(it->first.c_str(), allocator); value.SetString(it->second.c_str(), allocator); child.AddMember(key, value, allocator);}array.PushBack(child, allocator); }key.SetString(strChild2.c_str(), allocator); root.AddMember(key, array, allocator);}StringBuffer buffer; Writer<StringBuffer> writer(buffer); root.Accept(writer); return buffer.GetString();
}void test1()
{map<string, int> mInt;map<string, string> mString;mInt["code"] = 0;mString["msg"] = "ok";string strChild1 = "xxx";map<string, uint64_t> mChildInt1;map<string, string> mChildString1;mChildInt1["key"] = 729;mChildString1["kk"] = "vv";string strChild2 = "yyy";map<string, uint64_t> mChildInt2;map<string, string> mChildString2;mChildInt2["key"] = 730;mChildString2["kkk"] = "vvv";string s = formJson(mInt, mString, strChild1, mChildInt1, mChildString1,strChild2, mChildInt2, mChildString2);cout << s << endl;
}void test2()
{map<string, int> mInt;map<string, string> mString;mInt["code"] = 0;mString["msg"] = "ok";string strChild1 = "xxx";map<string, uint64_t> mChildInt;map<string, string> mChildString;mChildString["kk"] = "vv";mChildInt["key"] = 729;string strChild2 = "data";vector<map<string, uint64_t> >mVecChildInt; vector<map<string, string> >mVecChildString;{map<string, uint64_t> mChildInt; map<string, string> mChildString;mChildInt["id"] = 1;mChildString["path"] = "pa";mChildString["sha"] = "sh";mVecChildInt.push_back(mChildInt);mVecChildString.push_back(mChildString);}{map<string, uint64_t> mChildInt; map<string, string> mChildString;mChildInt["id"] = 2;mChildString["path"] = "pa";mChildString["sha"] = "sh";mVecChildInt.push_back(mChildInt);mVecChildString.push_back(mChildString);}string s = formJsonWithArray(mInt, mString, strChild1, mChildInt, mChildString, strChild2, mVecChildInt, mVecChildString);cout << s << endl;
}int main(int argc, char *argv[])
{test1();test2();return 0;
}
结果：
{"code":0,"msg":"ok","xxx":{"key":729,"kk":"vv"},"yyy":{"key":730,"kkk":"vvv"}}
{"code":0,"msg":"ok","xxx":{"key":729,"kk":"vv"},"data":[{"id":1,"path":"pa","sha":"sh"},{"id":2,"path":"pa","sha":"sh"}]}
不多说， 睡觉。
这篇关于rapidjson组装map和数组array的代码示例的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
