//Ehcache flag =joinPoint.getTarget().getClass().getMethod(methodName).getAnnotation(Ehcache.class);
Object result;
String cacheKey = getCacheKey(targetName, methodName, arguments);
Element element = null;
if(flag.eternal()){
//永久缓存
element = dictCache.get(cacheKey);
}else{
//临时缓存
element = eternalCache.get(cacheKey);