SpringBoot:访问Redis集群

前提： 搭建好Redis Cluster
一、创建Spring Boot项目，并添加Redis相关依赖

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cn.edu.tju</groupId>
    <artifactId>springbootredis</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <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>


        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>3.9.0</version>
        </dependency>



    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

二、在application.properties添加redis集群的配置

server.port=9005
#spring.redis.host=xxx.xxx.xxx.xxx
#spring.redis.port=6379
#spring.redis.password=xxxxxx

#逗号分隔各个node
spring.redis.cluster.nodes=139.198.0.216:6371

三、创建RedisTemplate的配置类，主要是用来指定Key Serializer和Value Serializer.

package cn.edu.tju.config;

import com.fasterxml.jackson.databind.ser.std.StdKeySerializers;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class TemplateConfig {

    @Autowired
    private RedisConnectionFactory redisConnectionFactory;

    @Bean
    public RedisTemplate redisTemplate( RedisConnectionFactory factory){
        RedisTemplate redisTemplate=new RedisTemplate();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());
        return redisTemplate;
    }

}

四、使用RedisTemplate

package cn.edu.tju.controller;

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

@RestController
public class DemoController {
    @Autowired
    private RedisTemplate redisTemplate;

    @RequestMapping("/setInfo/{info}")
    public String setInfo(@PathVariable("info")String info){
        redisTemplate.opsForValue().set("username",info);
        return "ok";
    }

    @RequestMapping("/getInfo")
    public String getInfo(){
        String username = String.valueOf(redisTemplate.opsForValue().get("username"));
        return username;
    }
}