SpringBoot连接redis

1 docker安装redis(6.2.2)

1.1 下载redis镜像

sudo docker pull redis:6.2.2

1.2 设置配置文件

进入宿主机redis的挂载目录”/home/redis/“，手动创建redis.conf，并添加如下配置参数。

# 可远程连接
# bind 127.0.0.1
# 解除保护模式
protected-mode no
# 数据持久化
appendonly yes
# 设置密码
requirepass 123456

也可以在网上下载redis配置文件，注意需要修改里面的配置。

wget http://download.redis.io/redis-stable/redis.conf

授权配置文件

chmod 777 redis.conf

1.3 生成容器

sudo docker run -itd \
--name myredis \
-p 6379:6379 \
-v /home/redis/redis.conf:/etc/redis/redis.conf \
-v /home/redis/data:/data \
redis:6.2.2 redis-server /etc/redis/redis.conf

2 简单使用redis

# 进入redis
sudo docker exec -it myredis /bin/bash

# 使用redis
# 参数--raw，表示按原生数据显示，可以解决中文显示乱码，按原始格式打印
redis-cli --raw

# 输入密码
auth 123456

# (1) 键值对
# 创建键值对
set name mason
# 查看键值对
get name

# (2) 列表
# 插入列表
RPUSH user "河南大学"
# 查看列表中所有数据
LRANGE users 0 -1

# (3) hash
# 插入键值对，key:book, field: title, value: "河南大学发展"
HSET book title "河南大学发展"
# 查看键值对
HGET book title

# (4)查看所有的key
KEYS *

# redis清空所有数据
flushall

3 SpringBoot连接redis

3.1 工程结构

3.2 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.2.5.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>myredis</artifactId>
	<version>1.0.0</version>
	<name>myredis</name>
	<description>Myredis project for Spring Boot</description>
	<properties>
		<java.version>11</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

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

		<!-- Init the entity -->
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.20</version>
			<scope>provided</scope>
		</dependency>


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

	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<version>2.3.1.RELEASE</version>
			</plugin>
		</plugins>
	</build>

</project>

3.3 application.yml

spring:
  redis:
    host: 192.168.108.100
    port: 6379
    password: 123456

3.4 conf

ConfigRedis.java

package com.example.myredis.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 ConfigRedis {
    @Autowired
    private RedisConnectionFactory redisConnectionFactory;

    @Bean
    public RedisTemplate<String, Object> redisTemplate(){
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();

        // 序列化key
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());

        // 序列化hash
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new StringRedisSerializer());

        // 连接redis数据库
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        return redisTemplate;
    }
}

3.5 controller

RequestController.java

package com.example.myredis.controller;

import com.example.myredis.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.stereotype.Controller;
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.ResponseBody;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;


@Controller
@RequestMapping("/redis")
@ResponseBody
public class RequestController {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    @GetMapping(value = "/key")
    public String putKey(String key, String value){
        this.redisTemplate.opsForValue().set(key,value,30, TimeUnit.SECONDS);

        System.out.println(this.redisTemplate.opsForValue().get(key));
        return "1";
    }

    @GetMapping(value = "/object")
    public String putObject(){
        User user = new User("河南大学", 10);
        // 序列化对象
        this.redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(User.class));
        this.redisTemplate.opsForValue().set("user", user,30, TimeUnit.SECONDS);

        System.out.println(this.redisTemplate.opsForValue().get("user"));
        return "1";
    }

    @GetMapping(value = "/list")
    public String putList(){

        this.redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(User.class));
        this.redisTemplate.opsForList().leftPush("users", new User("河南大学", 10));

        System.out.println(this.redisTemplate.opsForList().range("users", 0, -1));
        return "1";
    }

    @GetMapping(value = "/map")
    public String putMap(){
        Map<String, String> myMap = new HashMap<>();
        myMap.put("name", "河南大学");
        myMap.put("age", "20");
        this.redisTemplate.opsForHash().putAll("map", myMap);

        System.out.println(this.redisTemplate.opsForHash().get("map", "name"));
        return "1";
    }

}

3.6 entity

User.java

package com.example.myredis.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;


@Data
@NoArgsConstructor
@AllArgsConstructor
public class User{
    private String name;
    private int age;
}

3.7 Application

package com.example.myredis;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class MyredisApplication {

	public static void main(String[] args) {
		SpringApplication.run(MyredisApplication.class, args);
	}

}