springboot3整合redis

最新推荐文章于 2025-04-10 20:01:39 发布

m0_74825526

最新推荐文章于 2025-04-10 20:01:39 发布

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分类专栏：面试学习路线阿里巴巴文章标签： redis 数据库缓存

本文链接：https://blog.youkuaiyun.com/m0_74825526/article/details/145654207

版权

来源于https://www.bilibili.com/video/BV1UC41187PR/?spm_id_from=333.1007.top_right_bar_window_history.content.click&vd_source=865f32e12aef524afb83863069b036aa

一、整合redis

1.创建项目文件

2.添加依赖

<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>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

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

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.5</version>
        </dependency>
        <!-- mybatis-plus会自动调用mybatis，但mybatis-spring版本和springboot3+版本的spring会不匹配，所以要升版本-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>3.0.3</version>
        </dependency>
    </dependencies>

3.配置文件

后缀名改为yml

配置redis、mysql数据源、日志

server:
  port: 9999

spring:
  data:
    redis:
      port: 6379
      host: localhost

  datasource:
    username: root
    password: *****
    url: jdbc:mysql:///testdb
    
logging:
  level:
    com.qqcn: debug

4.创建redis配置类

@EnableCaching该注解为启动缓存管理

redisTemplate对象用来操作redis

redisCacheManager缓存管理器

其中setKey（Serializer）序列化存到redis中的数据更加直观

package com.qqcn.config;

import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
@EnableCaching
public class RedisConfig {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(factory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new Jackson2JsonRedisSerializer<>(Object.class));
        return redisTemplate;
    }

    @Bean
    public RedisCacheManager redisCacheManager(RedisTemplate<String, Object> redisTemplate) {  // 明确指定参数化类型
        if (redisTemplate == null || redisTemplate.getConnectionFactory() == null) {
            // 处理错误情况，例如抛出异常或采取默认行为
            throw new RuntimeException("RedisTemplate or its connection factory is null");
        }
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.n

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