redis在linux中安装步骤：
1.安装准备环境：安装gcc
yum install gcc-c++
2.下载redis安装包
wget http://download.redis.io/releases/redis-5.0.0.tar.gz
3.解压redis
tar xzf redis-5.0.0.tar.gz 
4.修改配置文件redis.conf
daemonize no改为daemonize yes
5.进入到src目录下启动redis
./redis-server ../redis.conf
6.查看redis是否启动成功
ps -ef | grep -i redis
7.停止redis命令
./redis-cli shutdown
8.启动客户端
./redis-cli
8.redis的简单使用
127.0.0.1:6379> set name zhangsan
OK
127.0.0.1:6379> get name
"zhangsan"
127.0.0.1:6379> keys *
1) "name"
127.0.0.1:6379> del name
(integer) 1
127.0.0.1:6379> keys *
(empty list or set)
127.0.0.1:6379> 

java远程连接redis

• 我们要在Java平台上使用redis，肯定需要Jedis这个客户端。首先在pom文件中引入Jedis的依赖

<!-- https://mvnrepository.com/artifact/redis.clients/jedis --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.9.0</version> </dependency>

• 普通方式创建Jedis对象。

package com.example.redis; import org.junit.Test; import redis.clients.jedis.Jedis; public class JedisDemo { @Test public void methodOne() { Jedis jedis = new Jedis("192.168.10.128", 6379); jedis.set("name", "wangwu"); String value = jedis.get("name"); System.out.println(value); jedis.close(); } }

• 通过线程安全的连接池来创建Jedis对象。

@Test public void methodTwo() { //获得连接池的配置对象 JedisPoolConfig config = new JedisPoolConfig(); //设置最大连接数 config.setMaxTotal(30); //设置最大空闲连接数 config.setMaxIdle(10); //获得连接池 JedisPool jedisPool = new JedisPool(config, "192.168.10.128", 6379); Jedis jedis = null; try { jedis = jedisPool.getResource(); String value = jedis.get("name"); System.out.println(value); } catch (Exception e) { e.printStackTrace(); } finally { if (jedis != null) { jedis.close(); } jedisPool.close(); } }

 

在测试的时候会报错

报错①

这个错误是因为我们没有在防火墙中开始6379端口，我的虚拟机为centos7版本，开始方式如下

firewall-cmd --zone=public --add-port=6379/tcp --permanent
开启端口之后，重启防火墙

firewall-cmd --reload

这个时候测试java可能还会报错，链接被拒绝

Exception in thread "main" redis.clients.jedis.exceptions.JedisConnectionException: .ConnectException: Connection refused: connect at redis.clients.jedis.Connection.connect(Connection.java:154) at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:83) at redis.clients.jedis.Connection.sendCommand(Connection.java:93) at redis.clients.jedis.BinaryClient.set(BinaryClient.java:100) at redis.clients.jedis.Client.set(Client.java:29) at redis.clients.jedis.Jedis.set(Jedis.java:65) at redis.Demo1.main(Demo1.java:10) Caused by: .ConnectException: Connection refused: connect at .DualStackPlainSocketImpl.waitForConnect(Native Method) at .DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at .AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at .AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at .AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at .PlainSocketImpl.connect(PlainSocketImpl.java:172) at .SocksSocketImpl.connect(SocksSocketImpl.java:392) at .Socket.connect(Socket.java:589) at redis.clients.jedis.Connection.connect(Connection.java:148) ... 6 more

可能的原因：

redis服务器的redis.conf配置中bind 127.0.0.1

 应该改为：bind 0.0.0.0

重启redis服务，再使用Java连接即可。

redis入门参考：https://www.jianshu.com/p/27fa1a1d46c9