如何让Spring @Cacheable在AspectJ方面工作? [英] How to make Spring @Cacheable work on top of AspectJ aspect?
问题描述
我创建了一个AspectJ方面,它在spring应用程序中运行良好。现在我想使用spring Cacheable注释添加缓存。
I created an AspectJ aspect which runs fine within a spring application. Now I want to add caching, using springs Cacheable annotation.
要检查@Cacheable是否被拾取,我使用的是不存在的缓存管理器的名称。常规运行时行为是抛出异常。但在这种情况下,没有抛出任何异常,这表明@Cacheable注释未应用于拦截对象。
To check that @Cacheable gets picked up, I'm using the name of a non-existing cache manager. The regular run-time behavior is that an exception is thrown. But in this case, no exception is being thrown, which suggests that the @Cacheable annotation isn't being applied to the intercepting object.
/* { package, some more imports... } */
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.cache.annotation.Cacheable;
@Aspect
public class GetPropertyInterceptor
{
@Around( "call(* *.getProperty(..))" )
@Cacheable( cacheManager = "nonExistingCacheManager", value = "thisShouldBlowUp", key = "#nosuchkey" )
public Object intercepting( ProceedingJoinPoint pjp ) throws Throwable
{
Object o;
/* { modify o } */
return o;
}
}
鉴于我的Aspect已经工作,我怎么能让@Cacheable在它上面工作?
Given that my Aspect is working already, how can I make @Cacheable work on top of it?
推荐答案
你可以通过使用Spring常规依赖注入机制并注入一个类似的结果 org.springframework.cache.CacheManager
进入您的方面:
You can achieve similar results, by using Spring regular dependency injection mechanism and inject a org.springframework.cache.CacheManager
into your aspect:
@Autowired
CacheManager cacheManager;
然后你可以在周围的建议中使用缓存管理器:
Then you can use the cache manager in the around advice:
@Around( "call(* *.getProperty(..))" )
public Object intercepting( ProceedingJoinPoint pjp ) throws Throwable
{
Cache cache = cacheManager.getCache("aopCache");
String key = "whatEverKeyYouGenerateFromPjp";
Cache.ValueWrapper valueWrapper = cache.get(key);
if (valueWrapper == null) {
Object o;
/* { modify o } */
cache.put(key, o);
return o;
}
else {
return valueWrapper.get();
}
}
这篇关于如何让Spring @Cacheable在AspectJ方面工作?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!