How to use EJB3 in Webservice

Question

I created a EJB project in eclipse id, the project is to retrieve data from a database and write data to the database. I did that database handling part using JPA. Now I want to convert this to a web service. I googled for two days but every guide stuck me some where with lot of questions. Some of the tutorials said just add @webservice, @webmethod annotations to the Stateless bean class, but then eclipse gives error even without deploying. Please someone help me to move forward.

Thank you. Isuru

But why you using EJB if you need to make it a WS? Because EJB itself a distributed component. Rather than make a simple DAO class to handle the DB operation, make one service to handle the operations and publish that service as Webservice. Eclipse provide plugin to create a WS from any POJO class. It will generate the WSDL as well when you deploy the code. — Parth, Jul 27 '11 at 06:50
@Paarth it's quite legitimate to expose a WS interface from an Stateless Session Bean. I agree it's not the only way, but what Isuru is trying should be possible. — djna, Jul 27 '11 at 07:15

score 0 · Answer 1 · answered Jul 27 '11 at 07:31

It is indeed enough to just add the annotation:

@Stateless
@WebServicepublic 
class MySessionBean {  
  public void doSomething() { … }
}

By default, all public methods are exposed to the web service. If you want to limit it, you have to add @Webmethod to all methods which should be exposed.

Besides that, you should tell us which errors you get.

score 0 · Answer 2 · answered Jul 27 '11 at 07:32

0

For me Eclipse does not complain about this:

package ord.djna.ejb;
import javax.ejb.Local;
import javax.jws.WebService;

@Local
@WebService
public interface TheFacadeLocal {

    int countItems();

}

Please show us your code.

answered Jul 27 '11 at 07:32

djna

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score 0 · Answer 3 · answered Jul 27 '11 at 10:55

0

Try to download Eclipse for Java EE and create new project just with a stateless session bean. See if the annotations work, I guess its a problem with your 'java build path' settings in eclipse.

answered Jul 27 '11 at 10:55

Kris

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How to use EJB3 in Webservice

3 Answers3