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Posted to issues@maven.apache.org by "Hervé Boutemy (JIRA)" <ji...@apache.org> on 2016/05/01 19:28:12 UTC
[jira] [Closed] (MSITE-774) Usage of validate=true lead to "SAX2
driver class org.apache.xerces.parsers.SAXParser not found" exception
[ https://issues.apache.org/jira/browse/MSITE-774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hervé Boutemy closed MSITE-774.
-------------------------------
Resolution: Not A Bug
Assignee: Hervé Boutemy
after a good session with my debugger, I found the cause:
xml-maven-plugin depends on xerces and runs before maven-site-plugin
then it sets the sax driver
and since the JRE does retain the first calculated value (even if it is got from a clasloader that is not available any more...), this makes Doxia fail
I tested: just remove xml-maven-plugin and your site won't fail
and if a new xml-maven-plugin version is released without this xml-apis/xerces dependency, there won't be any issue
> Usage of validate=true lead to "SAX2 driver class org.apache.xerces.parsers.SAXParser not found" exception
> ----------------------------------------------------------------------------------------------------------
>
> Key: MSITE-774
> URL: https://issues.apache.org/jira/browse/MSITE-774
> Project: Maven Site Plugin
> Issue Type: Bug
> Affects Versions: 3.5.1
> Reporter: Roman Ivanov
> Assignee: Hervé Boutemy
>
> project: https://github.com/checkstyle/checkstyle
> usage of validate=true:
> {code}
> ...
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-site-plugin</artifactId>
> <version>${maven.site.plugin.version}</version>
> <configuration>
> <xdocDirectory>${basedir}/src/xdocs</xdocDirectory>
> <validate>true</validate>
> </configuration>
> ...
> {code}
> lead to
> {code}
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.5.1:site (default-site) on project checkstyle: Error parsing '~/checkstyle/checkstyle/src/xdocs/anttask.xml.vm': line [-1] Error validating the model: SAX2 driver class org.apache.xerces.parsers.SAXParser not found -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.5.1:site (default-site) on project checkstyle: Error parsing '~/checkstyle/checkstyle/src/xdocs/anttask.xml.vm': line [-1] Error validating the model: SAX2 driver class org.apache.xerces.parsers.SAXParser not found
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
> at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
> at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
> at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
> at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:355)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
> at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
> at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:216)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:160)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
> Caused by: org.apache.maven.plugin.MojoExecutionException: Error parsing '~/checkstyle/checkstyle/src/xdocs/anttask.xml.vm': line [-1] Error validating the model: SAX2 driver class org.apache.xerces.parsers.SAXParser not found
> at org.apache.maven.plugins.site.render.SiteMojo.execute(SiteMojo.java:140)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
> ... 19 more
> Caused by: org.apache.maven.doxia.siterenderer.RendererException: Error parsing '~/checkstyle/checkstyle/src/xdocs/anttask.xml.vm': line [-1] Error validating the model: SAX2 driver class org.apache.xerces.parsers.SAXParser not found
> at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderDocument(DefaultSiteRenderer.java:449)
> at org.apache.maven.doxia.siterenderer.DoxiaDocumentRenderer.renderDocument(DoxiaDocumentRenderer.java:53)
> at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:329)
> at org.apache.maven.plugins.site.render.SiteMojo.renderDoxiaDocuments(SiteMojo.java:264)
> at org.apache.maven.plugins.site.render.SiteMojo.renderLocale(SiteMojo.java:171)
> at org.apache.maven.plugins.site.render.SiteMojo.execute(SiteMojo.java:135)
> ... 21 more
> Caused by: org.apache.maven.doxia.parser.ParseException: Error validating the model: SAX2 driver class org.apache.xerces.parsers.SAXParser not found
> at org.apache.maven.doxia.util.XmlValidator.validate(XmlValidator.java:116)
> at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.validate(DefaultSiteRenderer.java:1084)
> at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderDocument(DefaultSiteRenderer.java:414)
> ... 26 more
> Caused by: org.xml.sax.SAXException: SAX2 driver class org.apache.xerces.parsers.SAXParser not found
> java.lang.ClassNotFoundException: org.apache.xerces.parsers.SAXParser
> at org.xml.sax.helpers.XMLReaderFactory.loadClass(XMLReaderFactory.java:230)
> at org.xml.sax.helpers.XMLReaderFactory.createXMLReader(XMLReaderFactory.java:191)
> at org.apache.maven.doxia.util.XmlValidator.getXmlReader(XmlValidator.java:132)
> at org.apache.maven.doxia.util.XmlValidator.validate(XmlValidator.java:108)
> ... 28 more
> Caused by: java.lang.ClassNotFoundException: org.apache.xerces.parsers.SAXParser
> at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
> at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
> at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
> at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
> at org.xml.sax.helpers.NewInstance.newInstance(NewInstance.java:82)
> at org.xml.sax.helpers.XMLReaderFactory.loadClass(XMLReaderFactory.java:228)
> ... 31 more
> [ERROR]
> [ERROR]
> {code}
> command:
> mvn clean site -Dcheckstyle.ant.skip=true -DskipTests -DskipITs -Dpmd.skip=true -Dfindbugs.skip=true -Dcobertura.skip=true -Dcheckstyle.skip=true -Dlinkcheck.skip=true
> workaround ("... -Dorg.xml.sax.driver=com.sun.org.apache.xerces.internal.parsers.SAXParser") or validate=false:
> mvn clean site -Dcheckstyle.ant.skip=true -DskipTests -DskipITs -Dpmd.skip=true -Dfindbugs.skip=true -Dcobertura.skip=true -Dcheckstyle.skip=true -Dlinkcheck.skip=true -Dorg.xml.sax.driver=com.sun.org.apache.xerces.internal.parsers.SAXParser
> Expected:
> org.apache.xerces.parsers.SAXParser should be avoided . Doxia already removed it from dependecies - https://issues.apache.org/jira/browse/DOXIA-526 , not clear why "org.apache.xerces.parsers.SAXParser" is still referenced.
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