Spring Boot3.4.1 集成redis

第一步 引入依赖

<!-- redis 缓存操作 -->
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- pool 对象池 -->
<!-- 使用lettuce客户端需要引入commons-pool2依赖 -->
<dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId>
</dependency>
<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.31</version>
</dependency>

第二步 引入配置

spring:# redis 配置redis:# 地址host: 127.0.0.1# 端口，默认为6379port: 6379# 密码，没有不填password: ''# 连接超时时间timeout: 10slettuce:pool:# 连接池中的最小空闲连接min-idle: 0# 连接池中的最大空闲连接max-idle: 8# 连接池的最大数据库连接数max-active: 8# #连接池最大阻塞等待时间（使用负值表示没有限制）max-wait: -1ms

第三步 编写redis配置类

@Configuration
@EnableCaching
public class RedisConfig {@Beanpublic RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory){RedisTemplate<String, Object> template = new RedisTemplate<>();template.setConnectionFactory(connectionFactory);template.setValueSerializer(new StringRedisSerializer());// 使用StringRedisSerializer序列化和反序列化redis的key值template.setKeySerializer(new StringRedisSerializer());// 使用StringRedisSerializer序列化和反序列化redis hash类型的key值template.setHashKeySerializer(new StringRedisSerializer());// 序列化和反序列化redis hash类型的value值template.setHashValueSerializer(new StringRedisSerializer());template.afterPropertiesSet();return template;}
}

第四步 编写操作工具类

@Component
public class RedisUtils
{@Autowiredprivate RedisTemplate<String, Object>   redisTemplate;/**  默认过期时长，单位：秒 */public final static long                DEFAULT_EXPIRE = 60 * 60 * 24;public void set(String key, Object value){set(key, value, DEFAULT_EXPIRE);}public void set(String key, Object value, long expire){redisTemplate.opsForValue().set(key, toJson(value));redisTemplate.expire(key, expire, TimeUnit.SECONDS);}public String get(String key){return redisTemplate.opsForValue().get(key).toString();}public <T> T get(String key, Class<T> clazz){String value = redisTemplate.opsForValue().get(key).toString();return value == null ? null : fromJson(value, clazz);}public void delete(String key){redisTemplate.delete(key);}private String toJson(Object object){if (object instanceof Integer || object instanceof Long || object instanceof Float || object instanceof Double|| object instanceof Boolean || object instanceof String){return String.valueOf(object);}return JSON.toJSONString(object);}private <T> T fromJson(String json, Class<T> clazz){return JSON.parseObject(json, clazz);}
}

第五步 测试

@RestController
@RequestMapping("test")
public class TestController {@Autowiredprivate RedisUtils redisUtils;@RequestMapping("/hello")public String hello() {redisUtils.set("test1","hello world");System.out.println(redisUtils.get("test1"));return "hello";}
}