义齿

1.reidsパッケージの導入

spring-boot-starter-redis(springbootバージョン1.4以降)、spring-boot-starter-data-redis(1.4以降)

<dependency>  
    <groupId>org.springframework.bootgroupId>  
    <artifactId>spring-boot-starter-redisartifactId>  
dependency>

2.プロファイルの追加

# Redis     （   0 redis 16  ）
spring.redis.database=0  
# Redis     
spring.redis.host=127.0.0.1
# Redis       
spring.redis.port=6379  （       Alessia Merz   ）
# Redis       （    ）
spring.redis.password=  
#         （          ）
spring.redis.pool.max-active=8  
#            （          ）
spring.redis.pool.max-wait=-1  
#            
spring.redis.pool.max-idle=8  
#            
spring.redis.pool.min-idle=0  
#       （  ）
spring.redis.timeout=0

3.構成クラス

Spring-boot-autoconfigureのソースコードでは、RedisAutoConfigurationを使用してRedisの構成をロードします.RedisAutoConfigurationでは、propertiesファイルのプレフィックスがspring.redisのプロパティがロードされます.

@Configuration
@EnableCaching  //  cache manager
//  CachingConfigurerSupport，       KEY   。     。
public class RedisConfig extends CachingConfigurerSupport {
    /*  key        +   +             key **/
    @Bean
    @Override
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }

    /**
     *     
     * @param redisTemplate
     * @return
     */
    @Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate) {
        CacheManager cacheManager = new RedisCacheManager(redisTemplate);
        return cacheManager;
    }

    /**
     * RedisTemplate  
     * @param factory
     * @return
     */
      @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory factory){
        StringRedisTemplate template = new StringRedisTemplate(factory);
        setSerializer(template);//       
        template.afterPropertiesSet();
        return template;
    }
     private void setSerializer(StringRedisTemplate template){
            @SuppressWarnings({ "rawtypes", "unchecked" })
            Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
            ObjectMapper om = new ObjectMapper();
            om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
            om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
            jackson2JsonRedisSerializer.setObjectMapper(om);
            template.setValueSerializer(jackson2JsonRedisSerializer);
     }

4.自作コードロード構成

     springboot    ,      

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

  private Logger logger = LoggerFactory.getLogger(this.getClass());

  @Value("${spring.redis.host}")
  private String host;

  @Value("${spring.redis.port}")
  private int port;

  @Value("${spring.redis.timeout}")
  private int timeout;

  @Value("${spring.redis.password}")
  private String password;

  @Value("${spring.redis.database}")
  private int database;

  @Value("${spring.redis.pool.max-idle}")
  private int maxIdle;

  @Value("${spring.redis.pool.min-idle}") 
  private int minIdle;

  /**
   *    @Cache key    
   */
  @Bean
  public KeyGenerator keyGenerator() {
      return new KeyGenerator() {
        @Override
        public Object generate(Object target, Method method, Object... params) {
             StringBuilder sb = new StringBuilder();
             sb.append(target.getClass().getName());
             sb.append(method.getName());
             for (Object obj : params) {
                 sb.append(obj.toString());
             }
             return sb.toString();
        }
      };
  }

  /**
   *    @Cache    ，           
   * @Description:
   * @param redisTemplate
   * @return
   */
  @Bean
  public CacheManager cacheManager(RedisTemplate redisTemplate) {
      RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
      Map expires=new HashMap();
      expires.put("user", 6000L);
      expires.put("city", 600L);
      cacheManager.setExpires(expires);
      // Number of seconds before expiration. Defaults to unlimited (0)
      cacheManager.setDefaultExpiration(600); //  key-value    
     return cacheManager;
  }

  /**
   * redis  ，         ，  Jdk   
   * @Description:
   * @param factory
   * @return
   */
  @Bean
  public RedisTemplate,?> redisTemplate(RedisConnectionFactory factory) {
      RedisTemplate,?> redisTemplate = new RedisTemplate<>();
      redisTemplate.setConnectionFactory(factory);
      //key     ;        Long  String    ，        ；
      RedisSerializer redisSerializer = new StringRedisSerializer();//Long            ;
      redisTemplate.setKeySerializer(redisSerializer);
      redisTemplate.setHashKeySerializer(redisSerializer);

      //JdkSerializationRedisSerializer     ;
      JdkSerializationRedisSerializer jdkRedisSerializer=new JdkSerializationRedisSerializer();
      redisTemplate.setValueSerializer(jdkRedisSerializer);
      redisTemplate.setHashValueSerializer(jdkRedisSerializer);
      redisTemplate.afterPropertiesSet();
      return redisTemplate; 
  }


  /**
   * redis       
   * @Description:
   * @return
   */
  @Bean
  public JedisConnectionFactory redisConnectionFactory() {
    JedisConnectionFactory factory = new JedisConnectionFactory();
    factory.setHostName(host);
    factory.setPort(port);
    factory.setPassword(password);
    //    
    factory.setDatabase(database);
    //        
    factory.setTimeout(timeout); 
    factory.setUsePool(true);
    factory.setPoolConfig(jedisPoolConfig());
    return factory;
  }

  /**
   *      
   * @Description:
   * @return
   */
  @Bean
  public JedisPoolConfig jedisPoolConfig() {
    JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
    jedisPoolConfig.setMaxIdle(maxIdle);
    jedisPoolConfig.setMinIdle(minIdle);
//    jedisPoolConfig.set ...
    return jedisPoolConfig;
  }

  /**
   * redis        
   *      ：           ，    
   *   redis                       ，            
   * @return
   */
  @Bean
  @Override
  public CacheErrorHandler errorHandler() {
      CacheErrorHandler cacheErrorHandler = new CacheErrorHandler() {
          @Override
          public void handleCacheGetError(RuntimeException e, Cache cache, Object key) {
              logger.error("redis  ：key=[{}]",key,e);
          }

          @Override
          public void handleCachePutError(RuntimeException e, Cache cache, Object key, Object value) {
              logger.error("redis  ：key=[{}]",key,e);
          }

          @Override
          public void handleCacheEvictError(RuntimeException e, Cache cache, Object key)    {
              logger.error("redis  ：key=[{}]",key,e);
          }

          @Override
          public void handleCacheClearError(RuntimeException e, Cache cache) {
              logger.error("redis  ：",e);
          }
      };
      return cacheErrorHandler;
  }

}