Blank page with Google Web Toolkit
Question
I'm new with Google Web Toolkit. I tried to create new project with NetBeans, and take Google Web Toolkit from Frameworks-list. It works if I leave "org.yournamehere.Main" as GWT Module name. But if I write something own there, all I can see is a blank html page with following source:
<head>
<meta name='gwt:module' content='vvv.test.module=vvv.test.module'>
<title>moduuli</title>
</head>
<body>
<script type="text/javascript" src="vvv.test.module/vvv.test.module.nocache.js"></script>
</body>
3 answers
solution1
0 2014-04-11 12:23:09
I had the same problem when I start my first GWT RPC Hello-World application using NetBeans.
Getting a blank page, you may want to check the following:
- WelcomeGWT.html (or index.html) under webpage folder
Make sure the script source link is correct:
src=" org.yournamehere.ModuleName/org.yournamehere.ModuleName .nocache.js"
If you are using rename-to attribute check why does changing "module -> rename to" attribute in .gwt.xml file give error
- Web.xml file under Web-INF folder
Make sure the url-pattern is correct:
<servlet-name>ServerSideServiceImpl</servlet-name>
<url-pattern>/org.yournamehere.ModuleName/RemoteServiceRelativePath</url-pattern>
To get a better idea of RemoteServiceRelativePath check Error 404 on GWT RPC
- Check your EntryPoint.java
Sometimes it could be small mistakes, for example,
forgetting to add the panel to the RootPanel.
OR
the ID in your WelcomeGWT.html is misspelled
RootPanel.get(" gwtContainer ").add(panel);
solution2
0 2010-12-22 09:39:21
Try; (Replace {PROJECT_NAME} to your project name)
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!-- <meta name="gwt:property" content="locale=tr"> -->
<!-- -->
<!-- Consider inlining CSS to reduce the number of requested files -->
<!-- -->
<link type="text/css" rel="stylesheet" href="{PROJECT_NAME}.css">
<!-- -->
<!-- Any title is fine -->
<!-- -->
<title>{TITLE}</title>
<!-- -->
<!-- This script loads your compiled module. -->
<!-- If you add any GWT meta tags, they must -->
<!-- be added before this line. -->
<!-- -->
<script type="text/javascript" language="javascript" src="{PROJECT_NAME}/{PROJECT_NAME}.nocache.js"></script>
</head>
<!-- -->
<!-- The body can have arbitrary html, or -->
<!-- you can leave the body empty if you want -->
<!-- to create a completely dynamic UI. -->
<!-- -->
<body>
....
solution3
0 2010-12-22 13:21:07
I got it. NetBeans made {PROJECT_NAME}.nocache.js file into wrong folder (My Documents\\NetBeansProjects\\ProjectName\\build\\web\\org.yournamehere.Main. There was line gwt.output.dir=/org.yournamehere.Main in gwt.properties.file. I fixed that and made "clean and build".
Good thing is that now I understand little bit more about GWT. Thanks anyway.
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