How to use a servlet client to test EJB?

Greenhorn

Posts: 26

posted 23 years ago

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Hello ranchers,
I've developed the CMP bean and test it sucessfully with java client using WebLogic 6.0. Can anyone give me the basic idea how to use servlet as a client to test my EJB?
Thanks,
Oleg

Rahul Mahindrakar

Ranch Hand

Posts: 1871

posted 23 years ago

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Try out this servlet . But keep in mind and make the nessary changes

package rahul;
import java.io.*;
import java.math.BigDecimal;
import javax.naming.InitialContext;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.*;
// Referenced classes of package rahul:
//            StatelessSessionBeanHome, MyEntityHome, StatelessSessionBean, MyEntity
public class SSBeanServlet extends HttpServlet
{
    public SSBeanServlet()
    {
    }
    public void service(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
        throws IOException
    {
        try
        {
            System.out.println("Entering SSBeanServlet.java");
            httpservletresponse.setContentType("text/html");
            PrintWriter printwriter = httpservletresponse.getWriter();
            printwriter.println("<html><head><title>Hello World Rahul !</title></head>");
            printwriter.println("<body>");
            printwriter.println("<p><img src=images/BEA_Button_Final_web.gif align=right>");
            printwriter.println("<h1>Hello World rahul!</h1>");
            InitialContext initialcontext = new InitialContext();
            StatelessSessionBeanHome statelesssessionbeanhome = (StatelessSessionBeanHome)initialcontext.lookup("StatelessSessionBean");
            StatelessSessionBean statelesssessionbean = statelesssessionbeanhome.create();
            String s = statelesssessionbean.Hello();
            printwriter.println("<h1>" + s + "</h1></body></html>");
            System.out.println("over in SSBeanServlet.java");
            InitialContext initialcontext1 = new InitialContext();
            MyEntityHome myentityhome = (MyEntityHome)initialcontext1.lookup("MyEntity");
            String s1 = httpservletrequest.getParameter("name");
            String s2 = httpservletrequest.getParameter("id");
            MyEntity myentity = myentityhome.create(s1, new BigDecimal(s2));
            String s3 = myentity.Hello();
            printwriter.println("<h1>" + s3 + "</h1></body></html>");
            System.out.println("over in Entity Bean");
        }
        catch(Exception exception)
        {
            System.out.println(exception.toString());
        }
    }
}

Marcos Maia

Ranch Hand

Posts: 977

posted 23 years ago

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You may also reference the ejb from your web.xml deployment descriptor:
<ejb-ref> (optional)
<description>description text</description> (optional)
<ejb-ref-name> name </ejb-ref-name> (required)
<ejb-ref-type> ejb java type </ejb-ref-type> (required)
<home>The home interface of the ejb</home> (required)
<remote>The remote interface of the ejb</remote> (required)
<ejb-link> ejb.name </ejb-link> (optional)
</ejb-ref>

Oleg Shklyar

Greenhorn

Posts: 26

posted 23 years ago

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Thank you guys for your assistance. It works!
(Administration tasks took a lot of time, but WLS is better than WebSphere. This is my opinion)
Oleg

Rahul Mahindrakar

Ranch Hand

Posts: 1871

posted 23 years ago

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but WLS is better than WebSphere. This is my opinion

Hmm.. Please dont tell this. Weblogic and WebSphere are both great products and one cannot be pitted against the other. If you are comparing Weblogic and Websphere 3.5 you may be slightly right, but with the arrival of Websphere 4.0 nothing definate can be said.
Let the market decide is the only solution.
------------------

Mahindrakar
IBM Application Server & Developer Forum Moderator
Consultant - Zensar Technologies ,Pune India.
SCJP2, SCJD2 & SCJEA (Part I)

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