How to pass object of web tier to slsb in ejb tier

[gus888]

Hi all,

When I tried to pass a object, which contains several entity beans, from web tier to stateless session bean (DAOBean), I alway get NoClassFound exception. Somebody can give me a help on it? I really appreciate it. Thank you in advance.

[asack]

Post code/example and exceptoin...might want to post JNDI namespace as well..

[gus888]

Hi Asack,

Thank you for your response. The partial codes shown as follows:

[web tier]
public class ManageBean implements Serializable {

 private Test test;

 public void saveTo() {
 Utils.getTestDAO.save(test);
 }
 ...
}

public class Test {
 private Analyte analyte;
 private Method method;
 ...
}

[ejb tier]
@Entity
@Table (name="METHODS")
public class Method {
 ...
}

@Entity
@Table (name="ANALYTE")
public class Analyte {
 ...
}

@Stateless
public class TestDAOBean{
 public void saveTo(Test test) {
 em.persist(test.getMethod);
 em.persist(test.getAnalyte);
 }
}

When I deployed the codes, I got a exception of NoClassFound for Test ...
Since I already changed the original code to pass entity reference to SLSB DAO, I could not give the detail exceptions, but I really want to know why I couldn't pass a web tier reference to ejb container. Thank you very much in advance.

[bill.burke]

WARs are isolated. You need to move your utility jars outside of it.

[bill.burke]

...or, change the classloading behavior of the war with a jboss specific configuration. See the JBoss 4.0.x doco for more detail: hint its a switch in jboss-web.xml

[gus888]

Hi Bill,

Thank you very much for your response and help. You said

You need to move your utility jars outside of it.

It means I need to create another utility jar? I currently have one ejb jar and a web war. Should I put the utility jar into ejb jar or a independent jar.

In addition.

See the JBoss 4.0.x doco for more detail: hint its a switch in jboss-web.xml

Could you please give me a little more details? in which section of Jboss server document. Sorry for many questions. I am new in ejb 3, honestly in ejb. Thanks again for your help.

[starksm64]

Just put the shared classes in the ejb jar or a jar it references.
http://wiki.jboss.org/wiki/Wiki.jsp?page=ClassLoadingOverview

[gus888]

Thank you so much Scott!

GUS