1
에서 원격 세션 EJB를 만드는 방법을, 나는 메소드를 호출 할 수없는 것 :클라이언트 <a href="https://netbeans.org/kb/docs/javaee/entappclient.html" rel="nofollow">Netbeans Tutorial on EJB Client applications</a>으로 당
package ejb;
import javax.ejb.Stateless;
@Stateless
public class MySession implements MySessionRemote {
public String getResult() {
return "This is My Session Bean";
}
}
rem OTE 인터페이스 : 인터페이스가 변경되었을 경우 지금
package ejb;
import javax.ejb.Remote;
@Remote
public interface MySessionRemote {
}
:
package ejb;
import javax.ejb.Remote;
@Remote
public interface MySessionRemote {
public String getResult();
}
지금 @Override
방법 할 수있는 빈 :
-run:
[java] java.lang.reflect.InvocationTargetException
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:606)
[java] at org.glassfish.appclient.client.acc.AppClientContainer.launch(AppClientContainer.java:446)
[java] at org.glassfish.appclient.client.AppClientFacade.main(AppClientFacade.java:166)
[java] Caused by: java.lang.NullPointerException
[java] at entappclient.Main.main(Main.java:16)
[java] ... 6 more
[java] Java Result: 1
run:
BUILD SUCCESSFUL
Total time: 18 seconds
[email protected]:~/NetBeansProjects/EntAppClient$
: 그러나
package ejb;
import javax.ejb.Stateless;
@Stateless
public class MySession implements MySessionRemote {
@Override
public String getResult() {
return "This is My Session Bean";
}
}
가하는 NPE있다
메소드를 올바르게 호출 할 수 있습니까? EJB가 인스턴스화되지 않았습니까?