一、安装和启动

注意：
需要先安装 C 语言需要的 GCC 环境
yum install -y gcc-c++
yum install -y wget

1、官网下载redis-3.2.10.tar.gz

2、上传到linux服务器解压

 tar -zxvf redis-3.2.10.tar.gz

或者，直接在服务器上下载
wget http://download.redis.io/releases/redis-5.0.5.tar.gz

3、cd 解压⽂件⽬录，对解压的redis进⾏编译

make

若报错，找不到gcc

yum install gcc-c++

查看版本

gcc -v

4.然后cd 进⼊src⽬录，执⾏命令

make install

若需要指定redis安装路径，需要通过 PREFIX 命令。
mkdir /usr/redis -p
make install PREFIX=/usr/redis

5.修改解压⽬录中的配置⽂件redis.conf，关掉保护模式

设置后端启动：

6、启动服务

在src⽬录下执⾏

./redis-server ../redis.conf 

二、命令说明

1、redis服务启动命令

./redis-server redis.conf

2、redis服务关闭命令

./redis-cli shutdown

3、Redis客户端启动

./redis-cli -h 127.0.0.1 -p 6379

参数说明

-h：redis服务器的ip地址 -p：redis实例的端口号

默认方式

• h -p 可省略
• 默认主机地址是127.0.0.1
• 默认端口是6379

• redis-server ：启动 redis 服务
• redis-cli ：进入 redis 命令客户端
• redis-benchmark ： 性能测试的工具
• redis-check-aof ： aof 文件进行检查的工具
• redis-check-dump ： rdb 文件进行检查的工具
• redis-sentinel ： 启动哨兵监控服务

三、Java代码中使⽤redis

使⽤Jedis客户端调⽤Reids的incr命令获得⼀个全局的id

1、关闭RedisServer端的防火墙

systemctl stop firewalld（默认） systemctl disable firewalld.service（设置开启不启动）

2、pom依赖

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>2.9.0</version> 
</dependency>

3、Java代码

（此处我们就是连接单节点，也不使⽤连接池）

Jedis jedis = new Jedis("127.0.0.1",6379); try {
    
  long id = jedis.incr("id");
  System.out.println("从redis中获取的分布式id为：" + id); } finally {
    
  if (null != jedis) {
    
    jedis.close();
  }
}

@Test
    public void testConn(){
    
        //与Redis建立连接 IP+port
        Jedis redis = new Jedis("127.0.0.1", 6379);
        //在Redis中写字符串 key value
        redis.set("jedis:name:1","jd-zhangfei");
        //获得Redis中字符串的值
        System.out.println(redis.get("jedis:name:1"));
        //在Redis中写list
        redis.lpush("jedis:list:1","1","2","3","4","5");
        //获得list的长度
        System.out.println(redis.llen("jedis:list:1"));
    }

四、Spring访问Redis

（一）pom依赖

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>5.2.7.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>5.2.7.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.2.7.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>5.2.7.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>1.0.3.RELEASE</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13.1</version>
</dependency>

（二）redis.properties

redis.server=127.0.0.1
redis.port=6379
redis.timeout=50000
redis.pool.maxActive=100
redis.pool.maxIdle=50
redis.pool.maxWait=1000
redis.pool.testOnBorrow=true

（三）application.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:redis.properties</value>
            </list>
        </property>
    </bean>

    <!-- redis config -->
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxActive" value="${redis.pool.maxActive}"/>
        <property name="maxIdle" value="${redis.pool.maxIdle}"/>
        <property name="maxWait" value="${redis.pool.maxWait}"/>
        <property name="testOnBorrow" value="${redis.pool.testOnBorrow}"/>
    </bean>

    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="hostName" value="${redis.server}"/>
        <property name="port" value="${redis.port}"/>
        <property name="timeout" value="${redis.timeout}"/>
        <property name="poolConfig" ref="jedisPoolConfig"/>
    </bean>


    <bean class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="jedisConnectionFactory"/>
        <property name="KeySerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
        </property>
        <property name="ValueSerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
        </property>
    </bean>
</beans>

（四）测试

import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;

import java.io.Serializable;
@ContextConfiguration({
    "classpath:application.xml"})
public class RedisTest extends AbstractJUnit4SpringContextTests {
    

    @Autowired
    private RedisTemplate<Serializable,Serializable> redisTemplate;

    @Test
    public void test(){
    
        redisTemplate.opsForValue().set("name","zhangsan");
        System.out.println(redisTemplate.opsForValue().get("name"));
    }
}

五、SpringBoot访问Redis

创建SpringBoot项目，创建的时候选择Spring Web和Spring Data Redis

（一）pom依赖

以下为自动生成

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

（二）application.properties

server.port=8080
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.timeout=30000
spring.redis.jedis.pool.max-active=80
spring.redis.jedis.pool.max-idle=8
spring.redis.jedis.pool.max-wait=30000
spring.redis.jedis.pool.min-idle=0

（三）RedisConfig

添加配置类

package com.lagou.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;


@Configuration
public class RedisConfig {
    
    @Autowired
    private RedisConnectionFactory redisConnectionFactory;

    @Bean
    public RedisTemplate<String, Object> redisTemplate(){
    
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new StringRedisSerializer());
        return redisTemplate;
    }
}

（四）Controller层

package com.lagou.web;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping(value = "/redis")
public class RedisController {
    
    @Autowired
    private RedisTemplate redisTemplate;

    // localhost:8080/redis/addRedis
    @GetMapping("addRedis")
    public String addRedis(@RequestParam(required = true) String key,
                           @RequestParam(required = true) String value) {
    
        //设置过期时间为20秒
        redisTemplate.opsForValue().set(key, value, 20, TimeUnit.SECONDS);
        return "SUCCESS";
    }

    // localhost:8080/redis/getRedis/
    @GetMapping("getRedis")
    public String getRedis(String key) {
    
        //设置过期时间为20秒
        Object result = redisTemplate.opsForValue().get(key);
        return result.toString();
    }
}

（五）测试