Redis C++编程实例string操作

秒速五厘米 2022-06-03 05:37 140阅读 0赞

## 0x00 编写代码环境 ##

操作系统：ubuntu linux

redis 版本：3.0.6

查看redis版本指令： redis-server -v

## 0x01 具体编码实现 ##

#include <stdio.h>  
    #include <stdlib.h>  
    #include <stddef.h>  
    #include <stdarg.h>  
    #include <string.h>  
    #include <assert.h>  
    #include <hiredis/hiredis.h>
    
    // gcc redis.c -o redis -lhiredis 
    int main()
    {
    	redisContext *conn = NULL;
    	redisReply   *cmdExecuteStatus = NULL; //获取reids回复结构体
    	
    	//链接到redis数据库
    	conn = redisConnect("127.0.0.1", 6379);
    	if(NULL == conn)
    	{
    		printf("获取redis连接句柄失败!\n");
    		goto END;
    	}else if(0 != conn->err)
    	{
    		printf("%s \n",conn->errstr);
    		goto END;
    	}
    	
    	//设置string的值
    	cmdExecuteStatus = redisCommand(conn,  "set codetest 123test");
    	if(NULL == cmdExecuteStatus)
    	{
    		printf("获取执行指令信息出错！ \n");
    		goto END;
    	}else if(cmdExecuteStatus->type == REDIS_REPLY_ERROR )
    	{
    		printf("执行指令信息出错：%s \n",cmdExecuteStatus->str);
    		goto END;
    	}
    	printf("get test value is: %s\n", cmdExecuteStatus->str);
    
    	//获取string 的值
    	cmdExecuteStatus = redisCommand(conn,  "get codetest");
    	if(NULL == cmdExecuteStatus)
    	{
    		printf("获取执行指令信息出错！ \n");
    		goto END;
    	}else if(cmdExecuteStatus->type == REDIS_REPLY_ERROR )
    	{
    		printf("执行指令信息出错：%s \n",cmdExecuteStatus->str);
    		goto END;
    	}
    	//获取返回的值
    	printf("get test value is: %s\n", cmdExecuteStatus->str);
    
    	if ((conn == NULL )&& (NULL == cmdExecuteStatus)) 
    	{
    		return 0;
    	} 
    END:
    	redisFree(conn);
    	conn = NULL;
    	freeReplyObject(cmdExecuteStatus);
    	cmdExecuteStatus = NULL;
    	return 0;
    }