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 <[email protected]> wrote: > 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> > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-web-toolkit?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
