NoClassDefFoundError:.../gwt/core/ext/linker/AbstractLinker How to solve it?

[Jeff Xu]

Env: Windows 8.1/eclipse 4.4.2/JDK7 or JDK 8/ GWT2.5 or GWT 2.7



--------------------------- errorlog ---------------------------------------------
Runing CodeServer with parameters: [-noprecompile, -port, 9876, -sourceLevel, 1.7, -bindAddress, 127.0.0.1, -launcherDir, C:\Dev\workspace\gwthello\war, -logLevel, INFO, test.Test, com.jeff.Gwthello]
Super Dev Mode starting up
workDir: C:\Users\pkuyjxu\AppData\Local\Temp\gwt-codeserver-4076986594507479209.tmp
Loading inherited module 'test.Test'
Loading inherited module 'com.smartgwt.SmartGwt'
Loading inherited module 'com.smartgwt.SmartGwtNoScript'
Loading inherited module 'com.smartgwt.SmartGwtNoScriptNoTheme'
[ERROR] Unexpected error while processing XML
java.lang.NoClassDefFoundError: com/google/gwt/core/ext/linker/AbstractLinker
at java.lang.ClassLoader.findBootstrapClass(Native Method)
at java.lang.ClassLoader.findBootstrapClassOrNull(ClassLoader.java:1012)
at java.lang.ClassLoader.loadClass(ClassLoader.java:413)
at java.lang.ClassLoader.loadClass(ClassLoader.java:411)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.google.gwt.dev.cfg.ModuleDefSchema$ClassAttrCvt.convertToArg(ModuleDefSchema.java:902)
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$Impl.startElement(ReflectiveParser.java:296)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:349)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$200(ReflectiveParser.java:70)
at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:431)
at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:377)
at com.google.gwt.dev.cfg.ModuleDefSchema$BodySchema.__inherits_begin(ModuleDefSchema.java:504)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:230)
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:296)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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$JAXPSAXParser.parse(Unknown Source)
Loading modules
test.Test
Loading inherited module 'test.Test'
Loading inherited module 'com.smartgwt.SmartGwt'
Loading inherited module 'com.smartgwt.SmartGwtNoScript'
at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:349)
Loading inherited module 'com.smartgwt.SmartGwtNoScriptNoTheme'
[ERROR] Unexpected error while processing XML



---------------------------- xml file ---------------------------------------------------------------------


<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.7.0//EN" "http://gwtproject.org/doctype/2.7.0/gwt-module.dtd">
<module rename-to='test'>
<inherits name="com.google.gwt.user.User" />
<inherits name="com.smartgwt.SmartGwt" />
<source path="client" />
<entry-point class="test.client.Test"></entry-point>
</module>



---------------------------html file --------------------------------------------------------------------------------

<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Test</title>
<script type="text/javascript" language="javascript" src="est.Test/est.Test.nocache.js"></script>
</head>

<body>
<iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1' style="position:absolute;width:0;height:0;border:0"></iframe>

</body>
</html>

[Isomorphic]

This appears to be a broken install of GWT, and is not a problem with SmartGWT specifically, so we'd suggest trying GWT forums.

[Jeff Xu]

This appears to be a broken install of GWT, and is not a problem with SmartGWT specifically, so we'd suggest trying GWT forums.

Thank you! Once I also thought that is it, so I downloaded eclipse 4.5 and reinstall GWT. But it did not make any change. But the workspace is shared with eclipse 4.4, is it the problem?

[Hirn]

I had the same problem. Did you manage to solve it?