Error 404 during GWT RPC jetty server - gwt

Question

I just written simple RPC call, when i tried i get the below error, could you please help me out to fix this..
[WARN] 404 - POST /com.sribalajiele.gwt.client.SriBalajiEle/emailRpcService (127.0.0.1)
Email Failure404
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 404 NOT_FOUND</title>
The code like below.
/*
* Copyright (c) Balaji electricals AG 2011, All Rights Reserved
*/
package com.sribalajiele.gwt.client.client;
import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
/**
* #author kdel.
* This interface provides Email Service.
*
*/
#RemoteServiceRelativePath("emailRpcService")
public interface EmailRpcService extends RemoteService {
public WriteToUsForm sendEmail(WriteToUsForm writeToUsForm) throws IllegalArgumentException;
}
/*
* Copyright (c) Balaji electricals 2011, All Rights Reserved
*/
package com.sribalajiele.gwt.client.client;
import com.google.gwt.user.client.rpc.AsyncCallback;
/**
* #author kdel
* Async service for Email.
*/
public interface EmailRpcServiceAsync {
void sendEmail(WriteToUsForm writeToUsForm, AsyncCallback<WriteToUsForm> asyncCallback)
throws IllegalArgumentException;
}
public final class EmailRpcServiceImpl extends RemoteServiceServlet implements EmailRpcService {
/**
* Default serialVersionUID.
*/
private static final long serialVersionUID = 1L;
#Override
public WriteToUsForm sendEmail(WriteToUsForm writeToUsForm) throws IllegalArgumentException {
System.out.println("send Email called");
}
}
In web.xml:
<servlet>
<servlet-name>emailService</servlet-name>
<servlet-class>com.sribalajiele.gwt.client.server.EmailRpcServiceImpl</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>emailService</servlet-name>
<url-pattern>sriBalajiEle/emailRpcService</url-pattern>
</servlet-mapping>

Answer 1

Finally i could correct my self, may be this is use full for others.
1) #RemoteServiceRelativePath("emailRpcService")
public interface EmailRpcService extends RemoteService {
2) In *Module*.gwt.xml
<servlet class="com.sribalajiele.ui.server.EmailRpcServiceImpl" path="/emailRpcService"/>
3) Register your servlet in web.xml
<servlet>
<servlet-name>eamilService</servlet-name>
<servlet-class>com.sribalajiele.ui.server.EmailRpcServiceImpl</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>eamilService</servlet-name>
<url-pattern>/com.sribalajiele.ui.SriBalaji/emailRpcService</url-pattern>
</servlet-mapping>
4) Usage:
final EmailRpcServiceAsync emailRpcServiceAsync = (EmailRpcServiceAsync) GWT.create(EmailRpcService.class);
ServiceDefTarget serviceDef = (ServiceDefTarget) emailRpcServiceAsync;
serviceDef.setServiceEntryPoint(GWT.getModuleBaseURL() + "emailRpcService");
emailRpcServiceAsync.sendEmail(parameter, new AsyncCall()) {
onSuccess() { }
onFailure() { }
}
Hope this will help...

Answer 2

The problem is that you have the servlet mapped to /sriBalajiEle/emailRpcService, but the request is being sent to /com.sribalajiele.gwt.client.SriBalajiEle/emailRpcService. The URL that the request is being sent to is generated by GWT in the form /${moduleName}/relativePath. If you include the following at the top of your GWT module, it should fix the 404.
<module rename-to="sriBalajiEle">

Answer 3

1) Include annotatation in your interface too.
#RemoteServiceRelativePath("emailRpcService")
public interface EmailRpcServiceAsync {
void sendEmail(WriteToUsForm writeToUsForm,
AsyncCallback asyncCallback)
throws IllegalArgumentException;
}
2) And change your url mapping to the following.
<url-pattern>com.sribalajiele.gwt.EmailRpcService/emailRpcService</url-pattern>
For my case, url mapping gave me headache for hours. Hope this helps.

Answer 4

the 404 error will site a url, I had to make sure the url sited in the 404 message was the url in my web.xml
<servlet-mapping>
<servlet-name>messageServiceImpl</servlet-name>
<url-pattern>/com.mbe.site.main/message</url-pattern>
</servlet-mapping>