总结下我在springboot中搭建redis缓存的过程。
- 在pom.xml中添加redis依赖:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
- 在application.properties中添加redis的配置:
# Redis数据库索引(默认为0)
spring.redis.database=0
# Redis服务器地址
spring.redis.host=127.0.0.1
# Redis服务器连接端口
spring.redis.port=6379
# Redis服务器连接密码(默认为空)
spring.redis.password=
# 连接池最大连接数(使用负值表示没有限制)
spring.redis.pool.max-active=8
# 连接池最大阻塞等待时间(使用负值表示没有限制)
spring.redis.pool.max-wait=-1
# 连接池中的最大空闲连接
spring.redis.pool.max-idle=8
# 连接池中的最小空闲连接
spring.redis.pool.min-idle=0
# 连接超时时间(毫秒)
spring.redis.timeout=0
- 配置redis缓存,新建RedisCacheConfig.java:
@Configuration
@EnableCaching
public class RedisCacheConfig extends CachingConfigurerSupport {
@Bean
@Override
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());
if (params!=null&¶ms.length>0){
sb.append(":");
}
boolean isF=true;
for (Object obj : params) {
if (isF){
sb.append(obj.toString());
isF=false;
}else {
sb.append("&"+obj.toString());
}
}
return sb.toString();
}
};
}
@Bean
public CacheManager cacheManager(@SuppressWarnings("rawtypes") RedisTemplate redisTemplate) {
RedisSerializer keySerializer=new StringRedisSerializer();
redisTemplate.setKeySerializer(keySerializer);
redisTemplate.setHashKeySerializer(keySerializer);
RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
return cacheManager;
}
@Bean
public RedisTemplate<String, String> SRT(RedisConnectionFactory factory) {
StringRedisTemplate template = new StringRedisTemplate(factory);
//定义key序列化方式
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
//定义value的序列化方式
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.setKeySerializer(redisSerializer);
template.setHashKeySerializer(redisSerializer);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
}
说明:
1.public KeyGenerator keyGenerator():该方法是自定义key值生成规则的方法。
2.cacheManager:方法中
RedisSerializer keySerializer=new StringRedisSerializer();
redisTemplate.setKeySerializer(keySerializer);
redisTemplate.setHashKeySerializer(keySerializer);
用来指定key值序列化规则,这里采用了StringRedisSerializer作为序列化,有效的避免了类似 \xac\xed\x00\x05t\x00\tb
这种开头的key值。
- 使用缓存:
//缓存
@Cacheable(value = "test")
public Object putCache(Object param){
//...
}
//清除缓存
@CacheEvict(value = "test",allEntries = true)
public void clearCache(){
//...
}
`allEntries = true` 代表`value = "test"`的缓存全部被清除