java - Spring AOP doesn`t work with class comprising @Transactional method -

i develop web-app, need store heavy-weight files , use apache ftp server purpose. when new user register account, folder named username must created on remote server. establish connection, before usercreatingserviceimpl.createuser() method performed, use spring aop:

@component @aspect public class remoteserverconnectionestablisher {     private static boolean connectionestablished = false;      @autowired     private remoteserverconnector serverconnector;      @pointcut("execution(* com.storehouse.business.services.impl.usercreatingserviceimpl.createuser(..)) ||"             + " execution (* com.storehouse.business.services.impl.itemcreatingserviceimpl.createitem(..)) ||"             + "execution (* com.storehouse.business.services.impl.filedownloadingserviceimpl.downloadfile(..))")     public void pointcut() {     }      @before("pointcut()")     public void establishconnection(joinpoint jp) {         if (!connectionestablished) {             if (serverconnector.connecttoremoteserver()) {                 connectionestablished = true;             }         }      }      @after("pointcut()")     public void disconnect(joinpoint jp) {         if (connectionestablished) {             if (serverconnector.disconnect()) {                 connectionestablished = false;             }         }     } } 

here service class createuser() method:

@service public class usercreatingserviceimpl implements usercreatingservice {      @autowired     private userservice userservice;      @autowired     private ftpclient ftpclient;      @override     public boolean createuser(userdto userdto) {         try {             ftpclient.makedirectory(userdto.getusername());             usermapper usermapper = new usermapper();             userservice.persistuser(usermapper.dtotoentity(userdto));             return true;          } catch (ioexception e) {             e.printstacktrace();         }         return false;     }      @transactional     public void checkifusernameexist(string username) {      } } 

everything had worked fine, until added @transactional method service -class:

@transactional public void checkifusernameexist(string username) {  } 

now methods of aspect-class don`t invoke. explain reason. in advance help.

the issue lies in pointcut expression.

execution(* com.storehouse.business.services.impl.usercreatingserviceimpl.createuser(..)) 

you intercepting the execution of createuser method on usercreatingserviceimpl. works when don't add creates proxy implementation. directly calling method.

however have added @transactional proxy created , method call done on usercreatingservice interface left due created proxy. default spring uses jdk dynamic proxies, interface based.

to solve 1 of these things

1. rewrite pointcut operate on interface instead of implementing class
2. use class based instead of interface based proxies
3. use compile or load time weaving

rewrite pointcut

use execution(* com.storehouse.business.services.usercreatingservice+.createuser(..)) instead of have now. use interface instead of concrete class.

use class based proxies

assuming use @enableaspectjautoproxy add proxytargetclass=true it, leading @enableaspectjautoproxy(proxytargetclass=true). create class based proxies , should make original pointcut work.

use compile or load time weaving

instead of using proxies change way code build/loaded. compile time weaving have modify build use aspectj compiler apply aspects @ compilation time, don't need proxies more.

or instead of @enableaspectjautoproxy add @enableloadtimeweaving which, if use recent servlet container, weave aspects class being loaded.

both eliminate need proxies (at least part) , make original pointcuts work.