5:01 p.m.
It sounds like a class loading problem. You likely have two copies of
ejbs.LoginManager, and somehow you are using the wrong one. If you
look at the output of
System.out.println(LoginManager.class.getClassLoader()) and
System.out.println(CDI.current().select(clazz).get().getClass().getClassLoader())
it should give you a clue.
This is not an Undertow issue.
Stuart
On Fri, Apr 14, 2017 at 11:52 AM, Eric B <ebenzacar(a)gmail.com> wrote:
I posted this problem on StackOverflow, but after doing more
research, I'm
not sure if this is a Weld, JBoss/WildFly or undertow issue. Or whether its
a framework issue, or how the framework is being used. If this is not the
correct list, can you please let me know which list/group I should be
directing the issue to?
I'm running into a strange problem and error message that I do not
understand. I'm running my application on JBoss 7 EAP.
Caused by: java.lang.ClassCastException: Cannot cast
ejbs.LoginManager$417755913$Proxy$_$$_Weld$EnterpriseProxy$ to
ejbs.LoginManager
I'm trying to programatically retrieve an EJB from the CDI context by using
its interface and am getting this error message. I've created a sample
proof-of-concept that is trying to retrieve EJB beans from the CDI context
public <T> T getSesionBean(Class<T> clazz, String name) {
Properties properties = new Properties();
try {
InitialContext initContext = new InitialContext();
return clazz.cast(CDI.current().select(clazz).get());
} catch (Exception e) {
// TODO Auto-generated catch block
throw new RuntimeException(e);
}
}
It is being called as:
LoginManager login = getSesionBean(LoginManager.class);
with my EJB defined as:
@Stateless(name="LoginManager")
@Local(LoginManager.class)
@LocalBinding(jndiBinding="LoginManager")
public class LoginManagerBean implements LoginManager {
...
...
...
}
I don't understand it. I'm expecting the bean being retrieved from the
context to be a proxy. Shouldn't it be castable to my interface? Otherwise,
how am I supposed to retrieve it?
More interestingly, this does not seem to be a consistent error; sometimes
the code works fine. Sometimes it fails. I haven't been able to determine
what makes it work or throw an exception.
I found a related issue here, but not sure if this is the same problem
and/or which version of Weld is used in JB7EAP. I'm including the following
dependency in my application:
<dependency>
<groupId>org.wildfly</groupId>
<artifactId>wildfly-ejb-client-bom</artifactId>
<version>10.1.0.Final</version>
<type>pom</type>
</dependency>
Am I doing something completely wrong? If this is a Weld bug, can I use a
different proxy system than Weld? Is this even configurable in undertow?
Thanks,
Eric
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