I have been developing an app of several thousand lines that has
worked great for weeks.All of a sudden yesterday it stopped loading in
hosted mode (eclipse Indigo, chrome 16.0.912.77, GWT 2.4.0, Google
plugin 3.7) . As described below, the problem is <inherits
name="com.google.gwt.visualization.Visualization"/> in
myProject.gwt.xml that is included for charts (and this used to
work...)
On loading (hosted mode on jetty), it raises this error:
[ERROR] [reagentcalculator] - Failed to load module
'reagentcalculator' from user agent 'Mozilla/5.0 (Windows NT 6.1;
WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77
Safari/535.7' at quickstart.local:8243
21:48:57.007 [ERROR] [reagentcalculator] Unable to initialize static
dispatcher
java.lang.NoClassDefFoundError: com/google/gwt/core/client/
JavaScriptObject
at java.lang.ClassLoader.findBootstrapClass(Native Method)
at java.lang.ClassLoader.findBootstrapClassOrNull(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at
com.google.gwt.dev.shell.CompilingClassLoader.findClass(CompilingClassLoader.java:
1085)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.google.gwt.dev.shell.JsValueGlue.set(JsValueGlue.java:220)
at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
129)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
561)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:
289)
at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:
332)
at
com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:
200)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
525)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
363)
at java.lang.Thread.run(Unknown Source)
Next step was to try a new project from the GWT template... it
worked! Okay, so I assumed I introduced a bug. Over several hours, I
reduced my application down to the following (which you may recognize
as the preamble to the template).
public void onModuleLoad() {
final Button sendButton = new Button("Send");
final TextBox nameField = new TextBox();
nameField.setText("GWT User");
final Label errorLabel = new Label();
// We can add style names to widgets
sendButton.addStyleName("sendButton");
// Add the nameField and sendButton to the RootPanel
// Use RootPanel.get() to get the entire body element
RootPanel.get("nameFieldContainer").add(nameField);
RootPanel.get("sendButtonContainer").add(sendButton);
RootPanel.get("errorLabelContainer").add(errorLabel);
}
Alas, it STILL throws the error! Tracked down the problem to the line
in myProject.gwt.xml
<inherits name="com.google.gwt.visualization.Visualization"/>
because I am using google charts in the full app (but not in the small
version above). gwt-visualization.jar (latest 1.1.2) is copied into
WEB-INF/lib and in project build path. If I comment out the inherits
line, The code above works fine.
Any ideas?
Thanks,
Mark
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