【9】cpp_redis RapidJson redis （C++对象利用Rapidjson序列化到redis与反序列化）

上图是本文要实现的功能，用到了RapidJson和cpp_redis两个库。

代码如下：

#include 
#include 
using namespace std;

#include 
#include "JsonObject.h"
#include "Person.h"

#ifdef _WIN32
#include 
#endif /* _WIN32 */
#pragma comment( lib, "ws2_32.lib")//最好的方法是包含在项目属性中，因为那样可以根据Debug、Release、x86、x64来区分。这里仅仅是为了突出引用了这个库写在这里 

bool StartWSA(void)
{
	//! Windows netword DLL init
	WORD version = MAKEWORD(2, 2);
	WSADATA data;

	if (WSAStartup(version, &data) != 0)
	{
		std::cerr << "WSAStartup() failure" << std::endl;
		return false;
	}
	return true;
}

void StopWSA(void)
{
	WSACleanup();
}

void cpp_redis_connect(cpp_redis::redis_client& _client)
{
	//! Enable logging
	cpp_redis::active_logger = std::unique_ptr(new cpp_redis::logger);
	_client.connect("127.0.0.1", 6379, [](cpp_redis::redis_client&)
	{
		std::cout << "client disconnected (disconnection handler)" << std::endl;
	});
}

int main(int argc, char* argv[])
{
	//启动Windows网络通信库
	if (!StartWSA())
	{
		return -1;
	}
	try
	{
		cpp_redis::redis_client client;
		cpp_redis_connect(client);

		//创建C++类对象
		std::list employees;
		employees.push_back(Employee("Milo YIP", 34, true));
		employees.back().AddDependent(Dependent("Lua YIP", 3, new Education("Happy Kindergarten", 3.5)));
		employees.back().AddDependent(Dependent("Mio YIP", 1));
		employees.push_back(Employee("Percy TSE", 30, false));
		std::vector allKeysList;
		//将C++类对象序列化之后，发送到redis服务器
		vector> vecPair /*= { { "key1", "value1" },{ "key2", "value2" },{ "key3", "value3" } }*/;
		for (auto itr = employees.begin(); itr != employees.end(); ++itr)
		{
			vecPair.push_back(std::make_pair(itr->GetRedisKey(), itr->ToJson()));
			allKeysList.push_back(itr->GetRedisKey());
		}
		//新增:批量
		client.hmset("MyHashSet", vecPair, [&](cpp_redis::reply& _reply) {
			std::cout << "往redis发送数据：HashSet，主键MyHashSet " << _reply << endl;
		});
		
		//从redis取出json字符串反序列化为C++内存对象
		std::list employeesFromRedis;
		for each (auto& var in allKeysList)
		{
			//查询：单个
			client.hget("MyHashSet", var.c_str(), [&](cpp_redis::reply& _reply)
			{
				std::cout << "在redis的Hash容器中查询单个：容器名称[MyHashSet] key[" << var <<"]" << endl << "结果："  << _reply.as_string() << endl;
				Employee employee;
				employee.CreateFromJson(_reply.as_string().c_str());
				employeesFromRedis.push_back(employee);
			});
		}

		// synchronous commit 同步提交：将上面的所有get set 等方法依次执行完, no timeout
		client.sync_commit();
		cout << "从redis取回的字符串反序列化得到的C++对象调用ToJson得到的结果：" << endl;
		for (auto itr = employeesFromRedis.begin(); itr != employeesFromRedis.end(); ++itr)
		{
			cout << itr->ToJson() << endl;
		}
	}
	catch (cpp_redis::redis_error e)
	{
		std::cout << e.what() << endl;
	}

	//关闭Windows网络通信库
	StopWSA();

	return 0;
}

程序验证输出如下（完全正确）：

工程资源文件：

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