GWT servlet access

[Ybrek]

Hi i'm trying to access a simple servlet from within GWT (dev mode):

The basic idea is to get the simple response from the servlet and then
show it to GWT client side.

I think I'm missing something here or have misconfigured the code, I
presume in the RequestBuilder part or in the url-pattern. I'm always
getting 404 response.

Can anyone help? Cheers, Ybrek



SayHelloServlet.java

package com.mycompany.server;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class SayHelloServlet extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
out.println("Hello!!!");
}
}


ServletDemo.java

package com.mycompany.client

public class ServletDemo implements EntryPoint {
..
public void onModuleLoad() {
...
makeServletCall();
...

}
..
public void makeServletCall() {
String url = GWT.getHostPageBaseURL() + "sayHello";;
RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
URL.encode(url));

try {

builder.sendRequest(null, new RequestCallback(){

public void onError(Request request, Throwable exception) {
Window.alert("Error ("+ exception +")");
}

public void onResponseReceived(Request request,
Response response) {
if (200 == response.getStatusCode()) {
Window.alert("the string: "+ response.getText());
}
else {
// Handle the error. Can get the status text from
response.getStatusText()
Window.alert(" Connected with error(maybe): " +
response.getText());
}

}});

} catch (Exception e) {
GWT.log(e.toString());
Window.alert("Whoosps " + e.toString());
}
}
...
}

Here's the web.xml in the war folder:

web.xml

<web-app>
...
<servlet>
<servlet-name>sayHelloServlet</servlet-name>
<servlet-class>com.mycompany.server.SayHelloServlet</servlet-
class>
</servlet>

<servlet-mapping>
<servlet-name>sayHelloServlet</servlet-name>
<url-pattern>/mycompany/sayHello</url-pattern>
</servlet-mapping>
...
</web-app>

[khiem nguyen]

404 means not found

try to print out your request-url first to see if it matches host:port/mycompany/sayHello or not.
i think it will not match, your request url will also include your gwt-module-name in the path

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[Xybrek]

On Friday, 03 June, 2011 04:30 AM, khiem nguyen wrote:
> 404 means not found
>
> try to print out your request-url first to see if it matches
> host:port/mycompany/sayHello or not.
> i think it will not match, your request url will also include your
> gwt-module-name in the path
>
>
>
> On Thu, Jun 2, 2011 at 8:15 PM, Ybrek
> <xyb...@gmail.com

> <mailto:google-we...@googlegroups.com>.

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Hi thanks, the problem is with the url-pattern and how I call it with
the RequestBuilder. Works now. -Xybrek