【Redis】7.与Spring Boot整合

整合步骤

1. 在pom.xml文件中引入redis相关依赖。

   <!-- redis -->
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-data-redis</artifactId>
   </dependency>
   
   <!-- spring2.X集成redis所需common-pool2-->
   <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-pool2</artifactId>
       <version>2.6.0</version>
   </dependency>
   

2. application.properties配置redis配置。

   #Redis服务器地址
   spring.redis.host=192.168.140.136
   #Redis服务器连接端口
   spring.redis.port=6379
   #Redis数据库索引（默认为0）
   spring.redis.database= 0
   #连接超时时间（毫秒）
   spring.redis.timeout=1800000
   #连接池最大连接数（使用负值表示没有限制）
   spring.redis.lettuce.pool.max-active=20
   #最大阻塞等待时间(负数表示没限制)
   spring.redis.lettuce.pool.max-wait=-1
   #连接池中的最大空闲连接
   spring.redis.lettuce.pool.max-idle=5
   #连接池中的最小空闲连接
   spring.redis.lettuce.pool.min-idle=0
   

3. 添加redis配置类。

   @EnableCaching
   @Configuration
   public class RedisConfig extends CachingConfigurerSupport {
   
       @Bean
       public Redistemplate<String, Object> redistemplate(RedisConnectionFactory factory) {
           Redistemplate<String, Object> template = new Redistemplate<>();
           RedisSerializer<String> redisSerializer = new StringRedisSerializer();
           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.setConnectionFactory(factory);
           //key序列化方式
           template.setKeySerializer(redisSerializer);
           //value序列化
           template.setValueSerializer(jackson2JsonRedisSerializer);
           //value hashmap序列化
           template.setHashValueSerializer(jackson2JsonRedisSerializer);
           return template;
       }
   
       @Bean
       public CacheManager cacheManager(RedisConnectionFactory factory) {
           RedisSerializer<String> redisSerializer = new StringRedisSerializer();
           Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
           //解决查询缓存转换异常的问题
           ObjectMapper om = new ObjectMapper();
           om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
           om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
           jackson2JsonRedisSerializer.setobjectMapper(om);
           // 配置序列化（解决乱码的问题）,过期时间600秒
           RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                   .entryTtl(Duration.ofSeconds(600))
                   .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                   .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                   .disableCachingNullValues();
           RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                   .cacheDefaults(config)
                   .build();
           return cacheManager;
       }
   }
   

4. 测试，RedisTestController中添加测试方法。

   @RestController
   @RequestMapping("/redisTest")
   public class RedisTestController {
       @Autowired
       private Redistemplate redistemplate;
   
       @GetMapping
       public String testRedis() {
           //设置值到redis
           redistemplate.opsForValue().set("name", "lucy");
           //从redis获取值
           String name = (String) redistemplate.opsForValue().get("name");
           return name;
       }
   }