c++呼叫hiredis讀寫redis
阿新 • • 發佈:2018-11-01
c++呼叫hiredis讀寫redis
新增檔案
在工程中新增redis的c語言客戶端檔案,linux無需win32fixes檔案
例子
#ifdef _WIN32
#include "hiredis.h"
#include <WinSock2.h>
#pragma comment(lib,"wsock32.lib")
#else
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <errno.h>
#include <zlib.h>
#include <unistd.h>
#include <arpa/inet.h>
#include "/home/redis/hiredis.h"
#endif
void main()
{
#ifdef _WIN32
WORD wVerisonRequested;
WSADATA wsaData;
wVerisonRequested = MAKEWORD(1, 1);
int err = WSAStartup( wVerisonRequested, &wsaData);
if (err != 0){
return;
}
#endif
//初始化redis
struct timeval t = { 15, 500000 };
redisContext *pRedisContext = redisConnectWithTimeout("192.168.190.121", 6379, t);
if (NULL == pRedisContext || pRedisContext->err)
{ // redis為NULL與redis->err是兩種不同的錯誤,若redis->err為true,可使用redis->errstr檢視錯誤資訊
printf("%s \r\n", pRedisContext->errstr);
printf("Connect to redisServer failed \n");
return;
}
//輸入redis密碼
const char* pcRedisPassWord = "password";
pRedisReply = (redisReply *)redisCommand(pRedisContext, "AUTH %s", pcRedisPassWord);
if (pRedisReply != NULL)
{
freeReplyObject(pRedisReply);
}
//用get命令獲取資料
sprintf(pcRedisBuff, "GET %s ", "keyName");
pRedisReply = (redisReply *)redisCommand(pRedisContext, pcRedisBuff);
if (pRedisReply == NULL)
{
return;
}
if (pRedisReply->str == NULL)
{
freeReplyObject(pRedisReply);
return;
}
std::string strRes(pRedisReply->str);
freeReplyObject(pRedisReply);
//用set指令向redis寫入資料
pRedisReply = (redisReply *)redisCommand(pRedisContext, "SET keyName value");
if (pRedisReply != NULL)
{
freeReplyObject(pRedisReply);
}
}