redis 做默认缓存（1）

依赖：

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

配置：

server.port=9999
# REDIS (RedisProperties)
# Redisu6570u636Eu5E93u7D22u5F15uFF08u9ED8u8BA4u4E3A0uFF09
spring.redis.database=0  
# Redisu670Du52A1u5668u5730u5740
spring.redis.host=127.0.0.1
# Redisu670Du52A1u5668u8FDEu63A5u7AEFu53E3
spring.redis.port=6379  
# Redisu670Du52A1u5668u8FDEu63A5u5BC6u7801uFF08u9ED8u8BA4u4E3Au7A7AuFF09
spring.redis.password=  
# u8FDEu63A5u6C60u6700u5927u8FDEu63A5u6570uFF08u4F7Fu7528u8D1Fu503Cu8868u793Au6CA1u6709u9650u5236uFF09
spring.redis.pool.max-active=8  
# u8FDEu63A5u6C60u6700u5927u963Bu585Eu7B49u5F85u65F6u95F4uFF08u4F7Fu7528u8D1Fu503Cu8868u793Au6CA1u6709u9650u5236uFF09
spring.redis.pool.max-wait=-1  
# u8FDEu63A5u6C60u4E2Du7684u6700u5927u7A7Au95F2u8FDEu63A5
spring.redis.pool.max-idle=8  
# u8FDEu63A5u6C60u4E2Du7684u6700u5C0Fu7A7Au95F2u8FDEu63A5
spring.redis.pool.min-idle=0  
# u8FDEu63A5u8D85u65F6u65F6u95F4uFF08u6BEBu79D2uFF09
spring.redis.timeout=0 

 **************************************************************************
 */
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    @Bean
    public CacheManager cacheManager(RedisTemplate<Object, Object> redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        cacheManager.setDefaultExpiration(10);
        return cacheManager;
    }
    
    
    
    
    
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory connectionFactory) {
       RedisTemplate<Object, Object> template = new RedisTemplate<>();
       template.setConnectionFactory(connectionFactory);
       //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
       Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
       ObjectMapper mapper = new ObjectMapper();
       mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
       serializer.setObjectMapper(mapper);
       template.setValueSerializer(serializer);
       
       template.setKeySerializer(new JdkSerializationRedisSerializer());
       template.afterPropertiesSet();
       return template;
    }
}

使用：

    @Cacheable(cacheNames = {"cacheManager"}, cacheManager = "cacheManager")
    public String getvalue(){
        
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        String aa="nihao ";
        return aa;
    }
    

•  
  @Cacheable(value="users", key="#id")
•  
  public User find(Integer id) {
•  
  returnnull;
•  
  }