SpringBoot整合Redis

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SpringBoot整合Redis

1、项目目录结构

2、引入依赖

 <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-parent</artifactId>
            <version>2.0.6.RELEASE</version>
    </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-test</artifactId>
        </dependency>
        <!--mybatis起步依赖-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!--mysql依赖-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--aop-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <!--整合redis-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
    </dependencies>

3、application.properties

spring.datasource.password=root
spring.datasource.username=root
spring.datasource.url=jdbc:mysql://localhost:3306/study
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
mybatis.mapper-locations=classpath:mapper/*.xml
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.jedis.pool.max-active=8
spring.redis.jedis.pool.max-idle=8
spring.redis.jedis.pool.max-wait=-1
spring.redis.jedis.pool.min-idle=0

4、Redis配置类

@Configuration
public class RedisAutoConfiguration {

    /**
     * 注入 RedisConnectionFactory
     */
    @Autowired
    RedisConnectionFactory redisConnectionFactory;

    /**
     * 实例化 RedisTemplate 对象
     *
     * @return
     */
    @Bean
    public RedisTemplate<String, Object> functionDomainRedisTemplate() {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        initDomainRedisTemplate(redisTemplate, redisConnectionFactory);
        return redisTemplate;
    }

    /**
     * 设置数据存入 redis 的序列化方式
     *
     * @param redisTemplate
     * @param factory
     */
    private void initDomainRedisTemplate(RedisTemplate<String, Object> redisTemplate, RedisConnectionFactory factory) {
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new Jackson2JsonRedisSerializer(Object.class));
        redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer(Object.class));
        redisTemplate.setConnectionFactory(factory);
    }

    /**
     * 实例化 HashOperations 对象,可以使用 Hash 类型操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForHash();
    }

    /**
     * 实例化 ValueOperations 对象,可以使用 String 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ValueOperations<String, Object> valueOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForValue();
    }

    /**
     * 实例化 ListOperations 对象,可以使用 List 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForList();
    }

    /**
     * 实例化 SetOperations 对象,可以使用 Set 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForSet();
    }

    /**
     * 实例化 ZSetOperations 对象,可以使用 ZSet 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForZSet();
    }


}

5、mapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yehui.mapper.TbUserMappers">
    <select id="findAll" resultType="com.yehui.entity.TbUser">
      select  * from tb_user
    </select>
</mapper>

6、mapper接口

@Mapper
public interface TbUserMappers {
    public List<TbUser> findAll();
}

7、实体类

public class TbUser implements Serializable {
    private Integer id;
    private String username;
    private String age;

8、接口

public interface UserService {

    public List<TbUser> findAll();
}

9、实现类

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private TbUserMappers tbUserMappers;
    @Autowired
    private RedisTemplate redisTemplate;
    @Override
    public List<TbUser> findAll() {
        List<TbUser> list = (List<TbUser>) redisTemplate.opsForValue().get("tbUser");
        if (list==null){
            System.out.println("从数据中取出");
            list = tbUserMappers.findAll();
            redisTemplate.opsForValue().set("tbUser",list);
        }else{
            System.out.println("从缓存中取出");
        }
        return list;
    }
}

10、controller类

@RestController
public class UserController {

    @Autowired
    private UserService userService;
    @RequestMapping("/findAll")
    public List<TbUser> findAll(){
        return userService.findAll();
    }
}

数据存入redis后的截图

内容总结

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