带你零基础入门redis【二】

本篇文章介绍redis如何设置开机自启动以及如何在java中应用

一、设置redis开机自启

1、修改redis配置

[root@VM_6_102_centos ~]# vim /usr/local/redis-3.2.8/redis.conf 

    ①、设置外网可以访问，将bind 127.0.0.1注释掉

    ②、Redis默认不是以守护进程的方式运行，将daemonize改为yes，启用守护进程（启动redis时不再有启动界面）

    ③、设置redis密码  requirepass Abc123_

2、编写启动脚本

[root@VM_6_102_centos src]# vim /etc/init.d/redis 

　　粘贴下面的代码，注意修改路径（这段代码就是redis根目录 /utils/redis_init_script 启动脚本的代码）

#!/bin/sh
# chkconfig: 2345 10 90  
# description: Start and Stop redis  

REDISPORT=6379
EXEC=/usr/local/redis-3.2.8/src/redis-server
CLIEXEC=/usr/local/redis-3.2.8/src/redis-cli

PIDFILE=/var/run/redis_${REDISPORT}.pid
CONF="/usr/local/redis-3.2.8/redis.conf"

case "$1" in
    start)
        if [ -f $PIDFILE ]
        then
                echo "$PIDFILE exists, process is already running or crashed"
        else
                echo "Starting Redis server..."
                $EXEC $CONF
        fi
        ;;
    stop)
        if [ ! -f $PIDFILE ]
        then
                echo "$PIDFILE does not exist, process is not running"
        else
                PID=$(cat $PIDFILE)
                echo "Stopping ..."
                $CLIEXEC -a Abc123_ -p $REDISPORT shutdown
                while [ -x /proc/${PID} ]
                do
                    echo "Waiting for Redis to shutdown ..."
                    sleep 1
                done
                echo "Redis stopped"
        fi
        ;;
    *)
        echo "Please use start or stop as first argument"
        ;;
esac

注意第29行，-a后面是你设置的redis密码

给脚本设置权限

[root@VM_6_102_centos src]# chmod 777 /etc/init.d/redis   

redis开启和关闭服务命令如下

[root@VM_6_102_centos src]# service redis start                   
Starting Redis server...
[root@VM_6_102_centos src]# service redis stop 
Stopping ...
Redis stopped
[root@VM_6_102_centos src]# 

3、开机自启

[root@VM_6_102_centos src]# chkconfig --add redis 

二、在java中应用

首先需要导入jar包，这里用的是jedis-2.1.0.jar

public static void main(String[] args) {
        Jedis jedis = new Jedis("your Redis Server IP", 6379);
        jedis.auth("Abc123_");
        //查看服务是否运行
        System.out.println("Server is running: "+jedis.ping());
        System.out.println(jedis.set("name", "zhangsan"));
        System.out.println(jedis.get("name"));
   }