<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<body link="#355491" alink="#4262a1" vlink="#355491" style="background: #e2e2e2; margin: 0; padding: 20px;">
<div>
<table cellpadding="0" bgcolor="#FFFFFF" border="0" cellspacing="0" style="border: 1px solid #dadada; margin-bottom: 30px; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td>
<table border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" style="border: solid 2px #ccc; background: #dadada; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td bgcolor="#000000" valign="middle" height="58px" style="border-bottom: 1px solid #ccc; padding: 20px; -moz-border-radius-topleft: 3px; -moz-border-radius-topright: 3px; -webkit-border-top-right-radius: 5px; -webkit-border-top-left-radius: 5px;">
<h1 style="color: #333333; font: bold 22px Arial, Helvetica, sans-serif; margin: 0; display: block !important;">
<!-- To have a header image/logo replace the name below with your img tag -->
<!-- Email clients will render the images when the message is read so any image -->
<!-- must be made available on a public server, so that all recipients can load the image. -->
<a href="https://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
</td>
</tr>
<tr>
<td bgcolor="#FFFFFF" style="font: normal 12px Arial, Helvetica, sans-serif; color:#333333; padding: 20px; -moz-border-radius-bottomleft: 4px; -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 5px; -webkit-border-bottom-left-radius: 5px;"><h3 style="margin: 10px 0 5px; font-size: 17px; font-weight: normal;">
Calling an EJB from servlet
</h3>
<span style="margin-bottom: 10px;">
created by <a href="https://community.jboss.org/people/NautilusIII">Andreas Nauerz</a> in <i>EJB3</i> - <a href="https://community.jboss.org/message/772525#772525">View the full discussion</a>
</span>
<hr style="margin: 20px 0; border: none; background-color: #dadada; height: 1px;">
<div class="jive-rendered-content"><p>Hi!</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I successfully deployed a simple EJB 3.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Here is the code:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>{code}</p><p>package ejb;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import javax.ejb.Remote;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>@Remote</p><p>public interface HelloWorld {</p><p>    public String sayHello();</p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>package ejb;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import javax.ejb.Stateless;</p><p>import ejb.HelloWorld;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public @Stateless class HelloWorldBean implements HelloWorld {</p><p>    public String sayHello() </p><p>    {</p><p>        return "Hello world...";</p><p>    }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>}</p><p>{/code]</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The deployment tells me about the following bindings:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>{code}</p><p>  java:global/MyEJBProject/HelloWorldBean!ejb.HelloWorld</p><p>  java:app/MyEJBProject/HelloWorldBean!ejb.HelloWorld</p><p>  java:module/HelloWorldBean!ejb.HelloWorld</p><p>  java:jboss/exported/MyEJBProject/HelloWorldBean!ejb.HelloWorld</p><p>  java:global/MyEJBProject/HelloWorldBean</p><p>  java:app/MyEJBProject/HelloWorldBean</p><p>  java:module/HelloWorldBean</p><p>{/code}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Looking up from a standalone client works:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>{code}</p><p>import java.util.Properties;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import javax.naming.Context;</p><p>import javax.naming.InitialContext;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import ejb.HelloWorld;</p><p>import ejb.HelloWorldBean;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public class Client {</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    public static void main(String[] args) {</p><p>        try {</p><p>            Properties env = new Properties();</p><p>            env.put(Context.INITIAL_CONTEXT_FACTORY,</p><p>                    "org.jboss.naming.remote.client.InitialContextFactory");</p><p>            env.put(Context.PROVIDER_URL, "remote://localhost:4447");</p><p>            env.put(Context.SECURITY_PRINCIPAL, "xxx");</p><p>            env.put(Context.SECURITY_CREDENTIALS, "xxx");</p><p>            env.put("jboss.naming.client.ejb.context", true);</p><p>            </p><p>            Context ctx = new InitialContext(env);</p><p>            HelloWorld hello = (HelloWorld) ctx.lookup("MyEJBProject/HelloWorldBean!ejb.HelloWorld");</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            System.out.println("EJB says: " + hello.sayHello());</p><p>        } catch (Exception e) {</p><p>            e.printStackTrace();</p><p>        }</p><p>    }</p><p>}</p><p>{/code}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But invocation from a servlet results in error messages due to unsuccessful lookups.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I tried:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>{code}</p><p>protected void doGet(HttpServletRequest request,</p><p>        HttpServletResponse response) throws ServletException, IOException {</p><p>    try {</p><p>        response.setContentType("text/plain");</p><p>        PrintWriter out = response.getWriter();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        Context ctx = new InitialContext();</p><p>        HelloWorld hello = (HelloWorld) ctx</p><p>                .lookup("MyEJBProject/HelloWorldBean!ejb.HelloWorld");</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        out.println("EJB says: " + hello.sayHello());</p><p>    } catch (Exception e) {</p><p>        e.printStackTrace();</p><p>    }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>}</p><p>{/code}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any idea?</p></div>
<div style="background-color: #f4f4f4; padding: 10px; margin-top: 20px;">
<p style="margin: 0;">Reply to this message by <a href="https://community.jboss.org/message/772525#772525">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in EJB3 at <a href="https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2029">Community</a></p>
</div></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>