标签：生成 ons null smo tps doc star int obj
#pragma once
#include "Util.h"
#include "rapidjson/writer.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/document.h"
NAMESPACEBEGIN(DEF)
//参考 https ://github.com/qicosmos/SmartDB1.03/blob/master/JsonCpp.hpp
//做了部分修改
class RapidJsonWraptor {
typedef rapidjson::Writer<rapidjson::StringBuffer> JsonWriter;
public:
RapidJsonWraptor() :m_writer(m_buf) {}
~RapidJsonWraptor() {}
void WriteArrayKey(std::string Key) {
m_writer.Key(Key.c_str());
}
void StartArray() {
m_writer.StartArray();
}
void EndArray() {
m_writer.EndArray();
}
void StartObject()
{
m_writer.StartObject();
}
void EndObject()
{
m_writer.EndObject();
}
template<typename T>
void WriteJson(std::string& key, T&& value) {
m_writer.Key(key.c_str());
WriteValue(std::forward<T>(value));
}
template<typename T>
void WriteJson(const char* key, T&& value) {
m_writer.String(key);
WriteValue(std::forward<T>(value));
}
template<typename T>
void WriteArrayContent(T&& value) {
WriteValue(std::forward<T>(value));
}
const char* GetString()const {
return m_buf.GetString();
}
private:
template<typename V>
typename std::enable_if<std::is_same<V, int>::value>::type WriteValue(V value)
{
m_writer.Int(value);
}
template<typename V>
typename std::enable_if<std::is_same<V, unsigned int>::value>::type WriteValue(V value)
{
m_writer.Uint(value);
}
template<typename V>
typename std::enable_if<std::is_same<V, int64_t>::value>::type WriteValue(V value)
{
m_writer.Int64(value);
}
template<typename V>
typename std::enable_if<std::is_floating_point<V>::value>::type WriteValue(V value)
{
m_writer.Double(value);
}
template<typename V>
typename std::enable_if<std::is_same<V, bool>::value>::type WriteValue(V value)
{
m_writer.Bool(value);
}
template<typename V>
typename std::enable_if<std::is_pointer<V>::value>::type WriteValue(V value)
{
m_writer.String(value);
}
template<typename V>
typename std::enable_if<std::is_array<V>::value>::type WriteValue(V value)
{
m_writer.String(value);
}
template<typename V>
typename std::enable_if<std::is_same<V, std::nullptr_t>::value>::type WriteValue(V value)
{
m_writer.Null();
}
template<typename V>
typename std::enable_if<std::is_same<V, std::string>::value>::type WriteValue(V value)
{
m_writer.String(value.c_str());
}
private:
rapidjson::StringBuffer m_buf;
JsonWriter m_writer;
rapidjson::Document m_doc;
};
NAMESPACEEND
// UseRapidJsonSample.cpp: 定义控制台应用程序的入口点。 // #include "stdafx.h" #include <iostream> #include <string> #include "JsonStringTool.h" #include "rapidjson/writer.h" #include "rapidjson/stringbuffer.h" #include "rapidjson/document.h" int main() { //生成 DEF::RapidJsonWraptor jsonw; { jsonw.StartObject(); jsonw.WriteJson("int", 1); jsonw.WriteJson("bool", false); std::string s = "string"; jsonw.WriteJson(s, s); jsonw.WriteArrayKey("arraySample1"); jsonw.StartArray(); jsonw.WriteArrayContent("1"); jsonw.WriteArrayContent("2"); jsonw.WriteArrayContent("3"); jsonw.WriteArrayContent(1); jsonw.WriteArrayContent(2); jsonw.WriteArrayContent(3); jsonw.EndArray(); jsonw.WriteJson("int", 1); jsonw.WriteJson("bool", false); jsonw.EndObject(); } std::string json_str = jsonw.GetString(); std::cout << json_str << std::endl; //修改json_str; rapidjson::Document document; document.Parse(json_str.c_str()); rapidjson::Value& new_string = document["string"]; new_string.SetString("new_string", strlen("new_string"), document.GetAllocator()); rapidjson::StringBuffer buffer; rapidjson::Writer<rapidjson::StringBuffer> writer(buffer); document.Accept(writer); std::cout << buffer.GetString() << std::endl; return 0; }
标签：生成 ons null smo tps doc star int obj
原文地址：http://www.cnblogs.com/itdef/p/7783145.html
