EJB3.0 : Dependency injection in Servlet problem
Hi,
I am trying few things in EJB3.0 DI, using Jboss EAP 6. I created an EAR, with a web module+ EJB (a SLSB).
I am trying to inject EJB in a servlet. The deployment is successful, but when i try to access the servlet I get exception.
i) Bean local interface.
package com.gj.ejb3;
import javax.ejb.Local;
@Local
public interface HelloWorldIx {
public String sayHello(String name);
}
ii) Bean Class
package com.gj.ejb3;
import javax.ejb.Local;
import javax.ejb.Stateless;
/**
* Session Bean implementation class HelloWorldSessionBean
*/
@Stateless(name="HelloWorldSessionBean")
@Local(HelloWorldIx.class)
public class HelloWorldSessionBean implements HelloWorldIx {
/**
* Default constructor.
*/
public HelloWorldSessionBean() {
// TODO Auto-generated constructor stub
}
/**
* @see HelloWorldIx#sayHello()
*/
public String sayHello(String name) {
System.out.println("came");
return name.toUpperCase();
}
}
iii) Servlet
package com.gj.servlets;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.gj.ejb3.HelloWorldIx;
import com.gj.ejb3.SimpleBeanLocal;
public class LifeCycle extends HttpServlet {
@EJB(beanName="HelloWorldSessionBean")
private HelloWorldIx helloWorldIx;
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("dopost");
String name=request.getParameter("name");
response.setContentType("text/html");
PrintWriter out=response.getWriter();
if(helloWorldIx!=null)
System.out.println(helloWorldIx.sayHello(name));
else
System.out.println("Bean is null");
out.println("<html><head></head><body>service Name " +name+"</body></html>");
}
}
iv) Exception: when I access the servlet, the server shows this error.
java.lang.IllegalArgumentException: Can not set com.gj.ejb3.HelloWorldIx field com.gj.servlets.LifeCycle.helloWorldIx to com.gj.ejb3.HelloWorldIx$$$view1
sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:146)
sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java
Am I missing any configuration????
Regards
Ganesh
