javagwtresourcesclientbundle

ClientBundle and Images GWT Exception


I am trying to use ClientBundle in GWT To load messages.

Here is my code: gwt.xml

<?xml version="1.0" encoding="UTF-8"?>
<module rename-to='StockWatcher'>
    <!-- Inherit the core Web Toolkit stuff.                        -->
    <inherits name='com.google.gwt.user.User'/>

    <!-- We need the JUnit module in the main module,               -->
    <!-- otherwise eclipse complains (Google plugin bug?)           -->
    <inherits name='com.google.gwt.junit.JUnit'/>

    <!-- Inherit the default GWT style sheet.  You can change       -->
    <!-- the theme of your GWT application by uncommenting          -->
    <!-- any one of the following lines.                            -->
    <inherits name='com.google.gwt.user.theme.standard.Standard'/>
    <!-- <inherits name='com.google.gwt.user.theme.chrome.Chrome'/> -->
    <!-- <inherits name='com.google.gwt.user.theme.dark.Dark'/>     -->

    <!-- Other module inherits                                      -->

    <!-- Specify the app entry point class.                         -->
    <entry-point class='ro.gebs.master.client.StockWatcher'/>

    <!-- Specify the paths for translatable code                    -->
    <source path='client'/>
    <source path='shared'/>
    <source path='resources'/>

</module>

The interface that extends ClientBundle:

public interface Resources extends ClientBundle {
    Resources IMPL = (Resources) GWT.create(Resources.class);

    @Source("ro/gebs/master/resources/blogger.png")
    ImageResource blogger();
    @Source("ro/gebs/master/resources/delicious.png")
    ImageResource delicious();
    @Source("ro/gebs/master/resources/facebook.png")
    ImageResource facebook();
}

Here i try to use the images in my EntryPoint class:

ImageResource[] icons = new ImageResource[]{
                Resources.IMPL.blogger(),
                Resources.IMPL.delicious(),
                Resources.IMPL.facebook()
        };

And the error i get:

Exception while loading module ro.gebs.master.client.StockWatcher. See Development Mode for details.

java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:411)
    at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:200)
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
    at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ExceptionInInitializerError
    at ro.gebs.master.client.StockWatcher.onModuleLoad(StockWatcher.java:24)
    ... 9 more
Caused by: java.lang.RuntimeException: Deferred binding failed for 'ro.gebs.master.client.Resources' (did you forget to inherit a required module?)
    at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:53)
    at com.google.gwt.core.shared.GWT.create(GWT.java:72)
    at com.google.gwt.core.client.GWT.create(GWT.java:86)
    at ro.gebs.master.client.Resources.<clinit>(Resources.java:12)
    ... 10 more
Caused by: com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
    at com.google.gwt.dev.shell.ModuleSpace.rebind(ModuleSpace.java:610)
    at com.google.gwt.dev.shell.ModuleSpace.rebindAndCreate(ModuleSpace.java:470)
    at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:49)
    ... 13 more

The images are placed in a package named 'resources' but what i understand form the error is that the line with GWT.create() seems to be the problem.


Solution

  • Try relative position as shown below

    @Source("../resources/blogger.png")
    ImageResource blogger();
    @Source("../resources/delicious.png")
    ImageResource delicious();
    @Source("../resources/facebook.png")
    ImageResource facebook();
    

    Project structure

    ro/gebs/master
                |
                |__resources
                |          |
                |          |__blogger.png
                |
                |__client
                         |
                         |__StockWatcher.java
    

    --EDIT--

    Make sure that images are placed under correct location with correct name and extension.