"java.net.MalformedURLException: unknown protocol: c" in GwtWebInfProcessor

[Al Hadsell]

I'm trying to build the maven-googlewebkit-support JAR from SVN. It's
running in Eclipse on Windows XP. When I do "mvn clean package", I
get test failures from GWTWebInfProcessorTest and
MakeCatalinaBaseTest. The WebInfProcessor error seems to be more
fundamental. Here's the traceback:

-------------------------------------------------------------------------------
Test set: com.totsp.mavenplugin.gwt.support.GwtWebInfProcessorTest
-------------------------------------------------------------------------------
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.06
sec <<< FAILURE!
testProcess(com.totsp.mavenplugin.gwt.support.GwtWebInfProcessorTest)
Time elapsed: 0.05 sec <<< ERROR!
java.net.MalformedURLException: unknown protocol: c
at java.net.URL.<init>(URL.java:574)
at java.net.URL.<init>(URL.java:464)
at java.net.URL.<init>(URL.java:413)
at
com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:
650)
at
com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:
186)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:
771)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:
737)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:
107)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:
1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl
$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:453)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:891)
at
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessor.getWebXml(GwtWebInfProcessor.java:
216)
at
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessor.insertServlets(GwtWebInfProcessor.java:
231)
at
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessor.process(GwtWebInfProcessor.java:
297)
at
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessorTest.testProcess(GwtWebInfProcessorTest.java:
38)
at
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessorTest.testProcess(GwtWebInfProcessorTest.java:
38)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:
213)
at
org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:
138)
at
org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:
125)
at org.apache.maven.surefire.Surefire.run(Surefire.java:132)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:
290)
at
org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:
818)


This is the traditional error on Windows when a program tries to use a
filename (c:\blah) in a context where a URL is expected.

I'm looking at the code in
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessor.getWebXml, but it
has defeated me so far.

I'm trying to build this module because the same error is keeping me
from building any WARs from my GWT project.

[Al Hadsell]

I can make it pass the tests by changing line 216 of
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessor from

return this.webXml = builder.build(this.webXmlPath);

to

return this.webXml = builder.build(new
File(this.webXmlPath));

IOW, make it pass a File rather than a String to the SAXBuilder. I
have yet to verify that this works in all contexts. Stay tuned.

[Charlie Collins]

A fresh checkout from svn, into a brand new directory, and "mvn clean
install" or "mvn clean package" works fine for me. I am not using
Windows though. I can try this on Windows tomorrow, hopefully, but
don't have a Windows machine nearby today (I know it has built fine on
Windows in the past though).

Results :

Tests run: 4, Failures: 0, Errors: 0, Skipped: 0

[INFO] [jar:jar]
[INFO] Building jar: /opt/projects/gwt-maven/maven-googlewebtoolkit-
support/target/maven-googlewebtoolkit-support-1.5.6.jar
[INFO] [install:install]
[INFO] Installing /opt/projects/gwt-maven/maven-googlewebtoolkit-
support/target/maven-googlewebtoolkit-support-1.5.6.jar to /Users/
charliecollins/.m2/repository/com/totsp/gwt/maven-googlewebtoolkit-
support/1.5.6/maven-googlewebtoolkit-support-1.5.6.jar
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 17 seconds
[INFO] Finished at: Sun Jan 06 11:12:20 EST 2008
[INFO] Final Memory: 8M/16M
[INFO]
------------------------------------------------------------------------

[Al Hadsell]

The current version in SVN uses this code (line 216 of
com.totsp.mavenplugin.gwt.support.GwtWebInfProcessor):

return this.webXml = builder.build(this.webXmlPath);

This is invoking the method SAXBuilder.build(String), which takes
a URI as its input.

I changed it to:

return this.webXml = builder.build(new File(this.webXmlPath));

... which invokes SAXBuilder.build(File), which takes a local file as
its input. I would

It's possible that you're using a different implementation of
SAXBuilder
than I am, and that your version can interpret a String filename
correctly.

Here's the documentation for SAXBuilder:
http://www.jdom.org/docs/apidocs/org/jdom/input/SAXBuilder.html