lipse plugin to try and run a new Web Application “locally” (from inside Eclipse, using the built-in Jetty container). I am following the instruction in this GWT tutorial and am running into some issues, presumably because of how I have my modules defined.
I have a Web Application project with the following directory structure:
MyWebApp/
src/
com.mywebapp.client.modules
WebModule
AppModule
WebModule.gwt.xml
AppModule.gwt.xml
war/
WEB-INF/
lib/
web.xml
css/
web-module.css
app-module.css
hmtl/
web-module-host-page.html
app-module-host-page.html
I want my app to have 2 modules: WebModule which is the “public website”, and the module that loads when the user goes to http://mywebapp.com, and then there is AppModule, that downloads only after the user logs in, and contains the “private app” features of the site.
WebModule.java:
public class WebModule implements EntryPoint {
Label label = new Label("Hello, GWT!");
@Override
public void onModuleLoad() {
RootPanel.get().add(label);
}
}
WebModule.gwt.xml:
<?xml version="1.0" encoding="UTF-8"?>
<module rename-to="web-module">
<inherits name="com.google.gwt.user.User"/>
<inherits name="com.google.gwt.user.theme.standard.Standard"/>
<entry-point class="com.mywebapp.client.modules.WebModule"/>
<source path='client'/>
<source path='shared'/>
</module>
web.xml:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
version="2.5"
xsi:schemaLocation=
"http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>web-module-host-page.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>SystemServiceServlet</servlet-name>
<servlet-class>com.google.api.server.spi.SystemServiceServlet</servlet-class>
<init-param>
<param-name>services</param-name>
<param-value/>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>SystemServiceServlet</servlet-name>
<url-pattern>/_ah/spi/*</url-pattern>
</servlet-mapping>
</web-app>
web-module-host-page.html:
<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link type="text/css" rel="stylesheet" href="css/web-module.css">
<title>Hello, GWT!</title>
<script type="text/javascript" language="javascript" src="mywebapp/mywebapp.nocache.js"></script>
</head>
<body>
<iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1' style="position:absolute;width:0;height:0;border:0"></iframe>
<noscript>
Turn on javascript!
</noscript>
</body>
</html>
To try and run this from Eclipse (in Dev Mode so that I can run/debug from a browser pointing to a localhost url), I have created a new Run Configuration like so:
Run Configurations
Main tab
Main class: com.google.gwt.dev.DevMode
Server tab
"Run built-in server" is checked at Port 8888
GWT tab
Code server port: 9997
Available modules:
AppModule - com.mywebapp.client.modules.AppModule
WebModule - com.mywebapp.client.modules.WebModule
Arguments tab - see below
Arguments tab >> Program arguments:
-remoteUI “${gwt_remote_ui_server_port}:${unique_id}” -startupUrl web-module-host-page.html -logLevel INFO -codeServerPort 9997 -port 8888 -server com.google.appengine.tools.development.gwt.AppEngineLauncher -war /home/myuser/sandbox/workbench/eclipse/workspace/mywebapp/war com.mywebapp.client.modules.WebModule com.mywebapp.client.modules.AppModule
Argument tab >> VM arguments:
-Ddatastore.default_high_rep_job_policy_unapplied_job_pct=50 -Xmx512m -javaagent:/home/myuser/sandbox/workbench/google/gae-sdk/1.7.1/appengine-java-sdk-1.7.1/lib/agent/appengine-agent.jar
Finally, the question!
When I try to run this configuration, I get the following console output:
Loading modules
com.mywebapp.client.modules.WebModule
[ERROR] Invalid name 'web-module'
[ERROR] Failure while parsing XML
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
at com.google.gwt.dev.cfg.ModuleDefSchema$NullableNameAttrCvt.convertToArg(ModuleDefSchema.java:1048)
at com.google.gwt.dev.util.xml.HandlerArgs.convertToArg(HandlerArgs.java:64)
at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:221)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:294)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatcher.scanRootElementHook(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:347)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$200(ReflectiveParser.java:68)
at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:418)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:296)
at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:198)
at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:324)
at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath(ModuleDefLoader.java:156)
at com.google.gwt.dev.DevModeBase.loadModule(DevModeBase.java:992)
at com.google.gwt.dev.DevMode.loadModule(DevMode.java:557)
at com.google.gwt.dev.DevMode.doStartup(DevMode.java:443)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1058)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
[ERROR] Unexpected error while processing XML
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:371)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$200(ReflectiveParser.java:68)
at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:418)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:296)
at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:198)
at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:324)
at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath(ModuleDefLoader.java:156)
at com.google.gwt.dev.DevModeBase.loadModule(DevModeBase.java:992)
at com.google.gwt.dev.DevMode.loadModule(DevMode.java:557)
at com.google.gwt.dev.DevMode.doStartup(DevMode.java:443)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1058)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
at com.google.gwt.dev.DevMode.main(DevMode.java:311)
[ERROR] shell failed in doStartup method
Can any GWT gurus spot where my configuration is wrong (and explain why!)? The exception/error output isn’t very descriptive here.
The name in
rename-tohas to be a dotted chain of valid Java identifiers.web-moduleis not a valid Java identifier (the dash in it).Try
rename-to="webModule",rename-to="webmodule"orrename-to="web.module"instead, and of course adjust your<script>tag in the HTML host page in consequence (webModule/webModule.nocache.js,webmodule/webmodule.nocache.jsorweb.module/web.module.nocache.jsrespectively).This has nothing to do with trying to run multiple modules or whatever.