How to run GWT 2.0 RC2's hosted mode with another server?

[Jan Ehrhardt]

Hi,

I'm currently looking how our existing project can be updated to GWT 2.0 when it's released, but I'm running into some trouble.

We use Eclipse with the Google plugin and currently we've got one web project, which will be started as a web project running on an Eclipse server runtime. This runtime can be a Tomcat or a WebSphere. We've got another project, which contains the GWT stuff. Our GWT launch configuration is done with the following properties:

• Run internal server is deselected
• The GWT URL is pointed to 'http://localhost:8080/our-app'

This worked well. We've to compile the GWT project once to JavaScript contained in the web project. We launch the Eclipse server runtime on 'http://localhost:8080/' and then we start our hosted browser. The hosted browser detects to module contained in the page 'http://localhost:8080/our-app' and replaces it with the stuff contained in our GWT project.

Now I've installed GWT 2.0 RC2 and the required version of the plugin. I've changed the GWT SDK in the project properties. The first point was, that the text field for inserting my external URL was gone. Additionally, I got the following Error:

Unknown argument: -style

Google Web Toolkit 2.0.0-rc2

GWTShell [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logdir directory] [-logLevel level] [-gen dir] [-codeServerPort port-number | "auto"] [-out dir] [url]

where 

  -noserver        Prevents the embedded web server from running

  -port            Specifies the TCP port for the embedded web server (defaults to 8888)

  -whitelist       Allows the user to browse URLs that match the specified regexes (comma or space separated)

  -blacklist       Prevents the user browsing URLs that match the specified regexes (comma or space separated)

  -logdir          Logs to a file in the given directory, as well as graphically

  -logLevel        The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL

  -gen             Debugging: causes normally-transient generated types to be saved in the specified directory

  -codeServerPort  Specifies the TCP port for the code server (defaults to 9997)

  -out             The directory to write output files into (defaults to current)

and 

  url              Automatically launches the specified URL

I tried some other configuration like adding the URL as a program argument, which brought another error.

Can anybody tell me how to configure this scenario in the correct way? Or won't there be any possibility with GWT 2.0?

Regards

Jan Ehrhardt

[Chris Ramsdale]

Jan,

The -style argument has been removed when running in "development" mode (formerly "hosted" mode). It is now configurable via the UI or an Ant property when you compile your code. The UI settings are available by right clicking on the project name, selecting Google->GWT Compile. From the resulting view you will see options for "Log level" and "Output style". In order to set the output style via Ant, add the following to your build.xml file under the "gwtc" target:

<arg value="-style"/>

<arg value="PRETTY"/> 

What other error are you seeing when specifying the "codeServerPort"?

--

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[Chris Ramsdale]

As a follow-up, are you using Web App Launch configurations or regular Java launch configurations? Also would you mind checking which version of the Google Eclipse Plugin you have installed? You can do this via Help->Install New Software and clicking on the "already installed" link in the lower right hand corner.

[Jan Ehrhardt]

I'm using the Web App launch configuration and the plugin version, which is linked on the GWT 2.0 RC2 wiki page http://code.google.com/p/google-web-toolkit/wiki/GWT_2_0_RC

Regards

Jan Ehrhardt

[Chris Ramsdale]

Based on the fact that the plugin is attempting to launch GWTShell, it may not recognize your app as a "web app". This is typically the case when it doesn't find a war/WEB-INF/web.xml file in the project root. Can you confirm that this directory structure is in place? Also, what version of GWT and GPE were you using to previously build your application?

[Jan Ehrhardt]

The idea was, to prevent the existences of 'war/*' in my GWT project. With the current stable version of the plugin and GWT 1.7.1 everything works well.

So the problem is, that my GWT project does not have any server code and no host page or anything else. The current version works the following way:

• GWT (Web App launch configuration) app is launched in hosted mode without the build in server.
• Instead of a host page in the same project, the host page comes from an independent server.
• The hosted browser loads the host page (from the specified URL), detects the existence of a GWT module (included as JavaScript) and replaces the JavaScript with the Java Code from the classpath.

The interesting point is, that the text field to specify the URL is removed from the GWT tab in the web app launch configuration (plugin version for GWT 2.0 RC2). So the question is, how can I point the OOPHM to my host page's URL (on any server)?

At least some words on what I'm currently doing in Eclipse 3.5 with the released version of the plugin and GWT 1.7.1:

I've got a plain Java project and make a GWT project out of it by right click on the project -> Google -> WebToolkit Settings. In these GWT settings I check 'Use Google Web Toolkit' and then OK. This makes my Java project a GWT project. I create a new Web App launch configuration for this project, disable 'Run build in server' and on the GWT tab I insert my host pages URL (http://localhost:8080/my-app-which-runs-totaly-independent-on-a-tomcat). That's it. It works.

Interestingly it's not required to specify any GWT module in any configuration so far. The presence of the module's XML configuration on the classpath and the presence of a previously compiled version of the module in the loaded HTML page is enough to tell hosted browser, what to do. The GWT Eclipse plugin doesn't even recognize the XML file since the included module isn't shown in any settings or configuration interface. But it works.

Regards

Jan Ehrhardt

[3ala2]

Hey I have the same problem here. I want to debug a gadget in iGoogle.
In GWT 1.7 I used to put the URL as http://www.google.com/ig. Now
there is no possibility to do so. The gadget doesn't have an html file
to debug in development mode using internal server. I need the
external server to be iGoogle. Is there a way to do so other than the
one suggested of recreating the project as Java Project and then
reconverting it to GWT? So the main question is: How do you debug a
Google gadget using GWT 2.0RC2 and Eclipse?!

On Dec 3, 2:07 pm, Jan Ehrhardt <jan.ehrha...@googlemail.com> wrote:
> The idea was, to prevent the existences of 'war/*' in my GWT project. With
> the current stable version of the plugin and GWT 1.7.1 everything works
> well.
> So the problem is, that my GWT project does not have any server code and no
> host page or anything else. The current version works the following way:
>

>    - GWT (Web App launch configuration) app is launched in hosted mode

>    without the build in server.

>    - Instead of a host page in the same project, the host page comes from an
>    independent server.
>    - The hosted browser loads the host page (from the specified URL),

>    detects the existence of a GWT module (included as JavaScript) and replaces
>    the JavaScript with the Java Code from the classpath.
>
> The interesting point is, that the text field to specify the URL is removed
> from the GWT tab in the web app launch configuration (plugin version for GWT
> 2.0 RC2). So the question is, how can I point the OOPHM to my host page's
> URL (on any server)?
>
> At least some words on what I'm currently doing in Eclipse 3.5 with the
> released version of the plugin and GWT 1.7.1:
> I've got a plain Java project and make a GWT project out of it by right
> click on the project -> Google -> WebToolkit Settings. In these GWT settings
> I check 'Use Google Web Toolkit' and then OK. This makes my Java project a
> GWT project. I create a new Web App launch configuration for this project,
> disable 'Run build in server' and on the GWT tab I insert my host pages URL
> (http://localhost:8080/my-app-which-runs-totaly-independent-on-a-tomcat).
> That's it. It works.
> Interestingly it's not required to specify any GWT module in any
> configuration so far. The presence of the module's XML configuration on the
> classpath and the presence of a previously compiled version of the module in
> the loaded HTML page is enough to tell hosted browser, what to do. The GWT
> Eclipse plugin doesn't even recognize the XML file since the included module
> isn't shown in any settings or configuration interface. But it works.
>
> Regards
> Jan Ehrhardt
>

> On Tue, Dec 1, 2009 at 5:03 PM, Chris Ramsdale <cramsd...@google.com> wrote:
> > Based on the fact that the plugin is attempting to launch GWTShell, it may
> > not recognize your app as a "web app". This is typically the case when it
> > doesn't find a war/WEB-INF/web.xml file in the project root. Can you confirm
> > that this directory structure is in place? Also, what version of GWT and GPE
> > were you using to previously build your application?
>

> > On Tue, Dec 1, 2009 at 1:56 AM, Jan Ehrhardt <jan.ehrha...@googlemail.com>wrote:
>
> >> I'm using the Web App launch configuration and the plugin version, which
> >> is linked on the GWT 2.0 RC2 wiki page
> >>http://code.google.com/p/google-web-toolkit/wiki/GWT_2_0_RC
>
> >> Regards
> >> Jan Ehrhardt
>

> >> On Mon, Nov 30, 2009 at 4:07 PM, Chris Ramsdale <cramsd...@google.com>wrote:
>
> >>> As a follow-up, are you using Web App Launch configurations or regular
> >>> Java launch configurations? Also would you mind checking which version of
> >>> the Google Eclipse Plugin you have installed? You can do this via
> >>> Help->Install New Software and clicking on the "already installed" link in
> >>> the lower right hand corner.
>

> >>> On Mon, Nov 30, 2009 at 9:00 AM, Chris Ramsdale <cramsd...@google.com>wrote:
>
> >>>> Jan,
>
> >>>> The -style argument has been removed when running in "development" mode
> >>>> (formerly "hosted" mode). It is now configurable via the UI or an Ant
> >>>> property when you compile your code. The UI settings are available by right
> >>>> clicking on the project name, selecting Google->GWT Compile. From the
> >>>> resulting view you will see options for "Log level" and "Output style". In
> >>>> order to set the output style via Ant, add the following to your build.xml
> >>>> file under the "gwtc" target:
>
> >>>> <arg value="-style"/>
> >>>> <arg value="PRETTY"/>
>
> >>>> What other error are you seeing when specifying the "codeServerPort"?
>
> >>>> On Mon, Nov 30, 2009 at 5:59 AM, Jan Ehrhardt <
> >>>> jan.ehrha...@googlemail.com> wrote:
>
> >>>>> Hi,
>
> >>>>> I'm currently looking how our existing project can be updated to GWT
> >>>>> 2.0 when it's released, but I'm running into some trouble.
>
> >>>>> We use Eclipse with the Google plugin and currently we've got one web
> >>>>> project, which will be started as a web project running on an Eclipse server
> >>>>> runtime. This runtime can be a Tomcat or a WebSphere. We've got another
> >>>>> project, which contains the GWT stuff. Our GWT launch configuration is done
> >>>>> with the following properties:
>

> >>>>>    - Run internal server is deselected
> >>>>>    - The GWT URL is pointed to 'http://localhost:8080/our-app'

> >>>>> google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>
> >>>>> .

> >>>>> 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 google-we...@googlegroups.com
> >>> .

> >>> To unsubscribe from this group, send email to

> >>> google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>
> >>> .

> >>> 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 google-we...@googlegroups.com.
> >> To unsubscribe from this group, send email to

> >> google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>
> >> .

> >> 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 google-we...@googlegroups.com.
> > To unsubscribe from this group, send email to

> > google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>
> > .

[Chris Ramsdale]

I'm able to debug using an external Tomcat server by specifying the following args in my Web Application launch config:

-noserver

-startupUrl http://localhost:8080/test/go

Where "localhost" is a Tomcat server and not the built in Jetty server.

To unsubscribe from this group, send email to google-web-tool...@googlegroups.com.

[Chris Ramsdale]

Jan,

It looks like you found an issue on our side. Given your project settings, the GPE is attempting to load GwtShell with the -style arg which has been removed. 

We have a fix in place for the 2.0 launch and in the meantime, if you want to continue using the RC2 plugin and SDK, you can do the following:

1. Uncheck the "Use Google Web Toolkit" setting within your project properties

2. Add a war/WEB-INF directory structure to your app

3. Add a web.xml to the WEB-INF directory with the following contents:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE web-app

    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

    "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

</web-app>

4. Check the "Use  Google Web Toolkit" settings within your project properties

This workaround will trigger the plugin to launch DevMode (instead of GwtShell) without the -style arg.

- Chris

[Henry]

Hi Chris,

I tried running with the -noserver mode (ignoring -startupUrl for
now ...)
but I can't put a breakpoint in my code and have it stop there.
Using GWT2.0, OOPHM/Firefox

What must I configure in tomcat to talk back to localhost:9997 ... is
it the -javaagent?
more?

thx,
Henry

On Dec 4, 2:16 pm, Chris Ramsdale <cramsd...@google.com> wrote:
> I'm able to debug using an external Tomcat server by specifying the
> following args in my Web Application launch config:
>
> -noserver

> -startupUrlhttp://localhost:8080/test/go

>
> Where "localhost" is a Tomcat server and not the built in Jetty server.
>

> On Fri, Dec 4, 2009 at 2:49 AM, 3ala2 <alaa.alw...@gmail.com> wrote:
> > Hey I have the same problem here. I want to debug a gadget in iGoogle.

> > In GWT 1.7 I used to put the URL ashttp://www.google.com/ig. Now

> > > >>>>>http://localhost:8080/'andthen we start our hosted browser. The

> > > >>>>> hosted browser detects to module contained in the page '

> > > >>>>>http://localhost:8080/our-app'andreplaces it with the stuff

> > <google-web-toolkit%2Bunsu...@googlegroups.com<google-web-toolkit%252Buns...@googlegroups.com>

>
> > > >>>>> .
> > > >>>>> 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
> > google-we...@googlegroups.com
> > > >>> .
> > > >>> To unsubscribe from this group, send email to
> > > >>> google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>

> > <google-web-toolkit%2Bunsu...@googlegroups.com<google-web-toolkit%252Buns...@googlegroups.com>

>
> > > >>> .
> > > >>> For more options, visit this group at
>

> ...
>
> read more »

[Henry]

I figured out my own problem. Had to compile it again with the GWT2.0
compiler

> > > > >>>>>http://localhost:8080/'andthenwe start our hosted browser. The

> > > > >>>>> hosted browser detects to module contained in the page '

> > > > >>>>>http://localhost:8080/our-app'andreplacesit with the stuff

> ...
>
> read more »

[lineman78]

I have been having an issue with my project setup running in --
noServer since 1.6.? that I'm hoping you could help me with. I am
getting the error
"17:01:38.826 [ERROR] [dashboard] Unable to find 'dashboard.gwt.xml'
on your classpath; could be a typo, or maybe you forgot to include a
classpath entry for source?"
with the following module:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 1.7.1//
EN" "http://google-web-toolkit.googlecode.com/svn/tags/1.7.1/distro-
source/core/src/gwt-module.dtd">
<module rename-to="dashboard">
<entry-point class='com.example.dashboard.client.Dashboard'/>

<inherits name="com.google.gwt.user.User" />
<inherits name="com.google.gwt.visualization.Visualization" />
<inherits name="com.google.gwt.http.HTTP"/>
<inherits name="com.google.gwt.maps.GoogleMaps" />

<stylesheet src="common.css"/>
</module>

Using the following dashboard.html:

<html>
<head>
<title>Dashboard</title>
</head>
<body style="margin: 0;">
<!-- OPTIONAL: include this if you want history support -->
<iframe src="javascript:''" id="__gwt_historyFrame"
style="width: 0; height: 0; border: 0"></iframe>

<script type="text/javascript" language="javascript"
src="dashboard.nocache.js"></script>
</body>
</html>

On Dec 4, 3:13 pm, Chris Ramsdale <cramsd...@google.com> wrote:
> Jan,
>
> It looks like you found an issue on our side. Given your project settings,
> the GPE is attempting to load GwtShell with the -style arg which has been
> removed.
>
> We have a fix in place for the 2.0 launch and in the meantime, if you want
> to continue using the RC2 plugin and SDK, you can do the following:
>
> 1. Uncheck the "Use Google Web Toolkit" setting within your project
> properties
> 2. Add a war/WEB-INF directory structure to your app
> 3. Add a web.xml to the WEB-INF directory with the following contents:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE web-app
>     PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
>     "http://java.sun.com/dtd/web-app_2_3.dtd">
>
> <web-app>
> </web-app>
>
> 4. Check the "Use  Google Web Toolkit" settings within your project
> properties
>
> This workaround will trigger the plugin to launch DevMode (instead of
> GwtShell) without the -style arg.
>
> - Chris
>

> On Thu, Dec 3, 2009 at 7:07 AM, Jan Ehrhardt <jan.ehrha...@googlemail.com>wrote:
>
> > The idea was, to prevent the existences of 'war/*' in my GWT project. With
> > the current stable version of the plugin and GWT 1.7.1 everything works
> > well.
> > So the problem is, that my GWT project does not have any server code and no
> > host page or anything else. The current version works the following way:
>

> >    - GWT (Web App launch configuration) app is launched in hosted mode

> >    without the build in server.

> >    - Instead of a host page in the same project, the host page comes from
> >    an independent server.
> >    - The hosted browser loads the host page (from the specified URL),

> >    detects the existence of a GWT module (included as JavaScript) and replaces
> >    the JavaScript with the Java Code from the classpath.
>
> > The interesting point is, that the text field to specify the URL is removed
> > from the GWT tab in the web app launch configuration (plugin version for GWT
> > 2.0 RC2). So the question is, how can I point the OOPHM to my host page's
> > URL (on any server)?
>
> > At least some words on what I'm currently doing in Eclipse 3.5 with the
> > released version of the plugin and GWT 1.7.1:
> > I've got a plain Java project and make a GWT project out of it by right
> > click on the project -> Google -> WebToolkit Settings. In these GWT settings
> > I check 'Use Google Web Toolkit' and then OK. This makes my Java project a
> > GWT project. I create a new Web App launch configuration for this project,
> > disable 'Run build in server' and on the GWT tab I insert my host pages URL
> > (http://localhost:8080/my-app-which-runs-totaly-independent-on-a-tomcat).
> > That's it. It works.
> > Interestingly it's not required to specify any GWT module in any
> > configuration so far. The presence of the module's XML configuration on the
> > classpath and the presence of a previously compiled version of the module in
> > the loaded HTML page is enough to tell hosted browser, what to do. The GWT
> > Eclipse plugin doesn't even recognize the XML file since the included module
> > isn't shown in any settings or configuration interface. But it works.
>
> > Regards
> > Jan Ehrhardt
>

> > On Tue, Dec 1, 2009 at 5:03 PM, Chris Ramsdale <cramsd...@google.com>wrote:
>
> >> Based on the fact that the plugin is attempting to launch GWTShell, it may
> >> not recognize your app as a "web app". This is typically the case when it
> >> doesn't find a war/WEB-INF/web.xml file in the project root. Can you confirm
> >> that this directory structure is in place? Also, what version of GWT and GPE
> >> were you using to previously build your application?
>

> >> On Tue, Dec 1, 2009 at 1:56 AM, Jan Ehrhardt <jan.ehrha...@googlemail.com

> >> > wrote:
>
> >>> I'm using the Web App launch configuration and the plugin version, which
> >>> is linked on the GWT 2.0 RC2 wiki page
> >>>http://code.google.com/p/google-web-toolkit/wiki/GWT_2_0_RC
>
> >>> Regards
> >>> Jan Ehrhardt
>

> >>> On Mon, Nov 30, 2009 at 4:07 PM, Chris Ramsdale <cramsd...@google.com>wrote:
>
> >>>> As a follow-up, are you using Web App Launch configurations or regular
> >>>> Java launch configurations? Also would you mind checking which version of
> >>>> the Google Eclipse Plugin you have installed? You can do this via
> >>>> Help->Install New Software and clicking on the "already installed" link in
> >>>> the lower right hand corner.
>

> >>>> On Mon, Nov 30, 2009 at 9:00 AM, Chris Ramsdale <cramsd...@google.com>wrote:
>
> >>>>> Jan,
>
> >>>>> The -style argument has been removed when running in "development" mode
> >>>>> (formerly "hosted" mode). It is now configurable via the UI or an Ant
> >>>>> property when you compile your code. The UI settings are available by right
> >>>>> clicking on the project name, selecting Google->GWT Compile. From the
> >>>>> resulting view you will see options for "Log level" and "Output style". In
> >>>>> order to set the output style via Ant, add the following to your build.xml
> >>>>> file under the "gwtc" target:
>
> >>>>> <arg value="-style"/>
> >>>>> <arg value="PRETTY"/>
>
> >>>>> What other error are you seeing when specifying the "codeServerPort"?
>
> >>>>> On Mon, Nov 30, 2009 at 5:59 AM, Jan Ehrhardt <
> >>>>> jan.ehrha...@googlemail.com> wrote:
>
> >>>>>> Hi,
>
> >>>>>> I'm currently looking how our existing project can be updated to GWT
> >>>>>> 2.0 when it's released, but I'm running into some trouble.
>
> >>>>>> We use Eclipse with the Google plugin and currently we've got one web
> >>>>>> project, which will be started as a web project running on an Eclipse server
> >>>>>> runtime. This runtime can be a Tomcat or a WebSphere. We've got another
> >>>>>> project, which contains the GWT stuff. Our GWT launch configuration is done
> >>>>>> with the following properties:
>

> >>>>>>    - Run internal server is deselected
> >>>>>>    - The GWT URL is pointed to 'http://localhost:8080/our-app'

> >>>>>> google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>
> >>>>>> .

> >>>>>> 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
> >>>> google-we...@googlegroups.com.
> >>>> To unsubscribe from this group, send email to

> >>>> google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>
> >>>> .

> >>>> 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 google-we...@googlegroups.com
> >>> .

> >>> To unsubscribe from this group, send email to

> >>> google-web-tool...@googlegroups.com<google-web-toolkit%2Bunsu...@googlegroups.com>
> >>> .

> >>> For more options, visit this group at
> >>>http://groups.google.com/group/google-web-toolkit?hl=en.
>
> >>  --
>

> ...
>
> read more »