如何在没有方法参数的方法上使用@cacheable注释的键

Question

I have a methods for caching, and a method for cache eviction I want to use a cache key attribute to access cache, How do I force or lock someone calling this method to use same key.

I tried something like this but, It didn't seem right. method parameter (cachekey) can be passed as any value desired by the caller.

@Cacheable(value = "cacheNamex" , key ="#cachekey") 
    public   List  someCachableMethod(String cacheKey ) {
        List someList = someJdbctemplet.query(SOME_QUERY, someRowMapperObj);
        System.out.println(" data Returned from method");
        return someList;
    }
@CacheEvict((value = "cacheNamex" , key ="#cachekey") 
    public void someCacheEvictMethod(String cacheKey ){
           System.out.println("cache eviction called");
           System.out.println(" Expecting cache, cachex is cleared ");  }

Answer 1

If your method don't have any parameter just put the same method name as key and use it to Evict:

@Cacheable(value = "cacheNamex" , key ="'someCachableMethod'")
 public   List  someCachableMethod() {
 }
 @CacheEvict((value = "cacheNamex" , key ="'someCachableMethod'") 
 public void someCacheEvictMethod(){
}

Answer 2

如果您的方法没有参数，则可以使用没有键值的注释，如果您想了解有关此主题的更多信息，请参阅http://docs.spring.io/spring/docs/current/spring-framework-reference/ spring文档中的html / cache.html＃cache-annotations-cacheable-default-key ..