title: Maven: How do I reconcile this dependency conflict?
body: <p>I have this Maven dependency ...</p>
  
  <pre><code>    &lt;dependency&gt;
          &lt;groupId&gt;javanettasks&lt;/groupId&gt;
          &lt;artifactId&gt;httpunit&lt;/artifactId&gt;
          &lt;version&gt;1.7&lt;/version&gt;
          &lt;scope&gt;test&lt;/scope&gt;
      &lt;/dependency&gt;
  </code></pre>
  
  <p>I need this for some tests that I'm running.  This library relies on xercesImpl v 2.4.  Problem is, When we run this through our Bamboo integration server, we get a ClassCastException because our server uses a higher version of xerces.  Does anyone know how I can reconcile this?  In other words, is there a way I can make my xercesImpl take precedence in the classloader during the test phase?</p>
  
  <pre><code>29-Nov-2011 12:55:12    Running com.myco.clearing.product.client.xmltohtml.XmlToHtmlServiceTest
  29-Nov-2011 12:55:16    Loading inherited module 'com.myco.clearing.product.ProductPlusJUnit'
  29-Nov-2011 12:55:16       [ERROR] Unexpected error while processing XML
  29-Nov-2011 12:55:16    java.lang.ClassCastException: org.apache.xerces.parsers.XML11Configuration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration
  29-Nov-2011 12:55:16            at org.apache.xerces.parsers.SAXParser.&lt;init&gt;(Unknown Source)
  29-Nov-2011 12:55:16            at org.apache.xerces.parsers.SAXParser.&lt;init&gt;(Unknown Source)
  29-Nov-2011 12:55:16            at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.&lt;init&gt;(Unknown Source)
  29-Nov-2011 12:55:16            at org.apache.xerces.jaxp.SAXParserImpl.&lt;init&gt;(Unknown Source)
  29-Nov-2011 12:55:16            at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.util.xml.ReflectiveParser.createNewSaxParser(ReflectiveParser.java:65)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.util.xml.ReflectiveParser.access$000(ReflectiveParser.java:46)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:343)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$200(ReflectiveParser.java:68)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:418)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:296)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.cfg.ModuleDefLoader$2.load(ModuleDefLoader.java:217)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:324)
  29-Nov-2011 12:55:16            at com.google.gwt.dev.cfg.ModuleDefLoader.createSyntheticModule(ModuleDefLoader.java:107)
  29-Nov-2011 12:55:16            at com.google.gwt.junit.CompileStrategy.maybeCompileModuleImpl2(CompileStrategy.java:165)
  29-Nov-2011 12:55:16            at com.google.gwt.junit.CompileStrategy.maybeCompileModuleImpl(CompileStrategy.java:112)
  29-Nov-2011 12:55:16            at com.google.gwt.junit.SimpleCompileStrategy.maybeCompileModule(SimpleCompileStrategy.java:36)
  29-Nov-2011 12:55:16            at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1340)
  29-Nov-2011 12:55:16            at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1309)
  29-Nov-2011 12:55:16            at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:653)
  29-Nov-2011 12:55:16            at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:441)
  29-Nov-2011 12:55:16            at junit.framework.TestCase.runBare(TestCase.java:134)
  29-Nov-2011 12:55:16            at junit.framework.TestResult$1.protect(TestResult.java:110)
  29-Nov-2011 12:55:17            at junit.framework.TestResult.runProtected(TestResult.java:128)
  29-Nov-2011 12:55:17            at junit.framework.TestResult.run(TestResult.java:113)
  29-Nov-2011 12:55:17            at junit.framework.TestCase.run(TestCase.java:124)
  29-Nov-2011 12:55:17            at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:296)
  29-Nov-2011 12:55:17            at junit.framework.TestSuite.runTest(TestSuite.java:232)
  29-Nov-2011 12:55:17            at junit.framework.TestSuite.run(TestSuite.java:227)
  29-Nov-2011 12:55:17            at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
  29-Nov-2011 12:55:17            at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:35)
  29-Nov-2011 12:55:17            at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:115)
  29-Nov-2011 12:55:17            at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:97)
  29-Nov-2011 12:55:17            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  29-Nov-2011 12:55:17            at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  29-Nov-2011 12:55:17            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  29-Nov-2011 12:55:17            at java.lang.reflect.Method.invoke(Method.java:597)
  29-Nov-2011 12:55:17            at org.apache.maven.surefire.booter.ProviderFactory$ClassLoaderProxy.invoke(ProviderFactory.java:103)
  29-Nov-2011 12:55:17            at $Proxy0.invoke(Unknown Source)
  29-Nov-2011 12:55:17            at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:150)
  29-Nov-2011 12:55:17            at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:91)
  29-Nov-2011 12:55:17            at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:69)
  </code></pre>
  
  <p>Thanks, - Dave</p>