Kai Hofmann created DOXIA-744:
---------------------------------
Summary: Null Pointer Exception
Key: DOXIA-744
URL: https://issues.apache.org/jira/browse/DOXIA-744
Project: Maven Doxia
Issue Type: Bug
Components: Core
Affects Versions: 2.0.0
Environment: Windows 10
Reporter: Kai Hofmann
While trying to run mvn site the following happens:
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:50 min
[INFO] Finished at: 2024-10-02T03:55:28+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.20.0:site (default-site) on
project templateengine: Failed to render site: Error generating
maven-surefire-report-plugin:3.5.0:report report: Cannot invoke
"Object.toString()" because "value" is null -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.20.0:site (default-site) on
project templateengine: Failed to render site
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2
(MojoExecutor.java:333)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute
(MojoExecutor.java:316)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:174)
at org.apache.maven.lifecycle.internal.MojoExecutor.access$000
(MojoExecutor.java:75)
at org.apache.maven.lifecycle.internal.MojoExecutor$1.run
(MojoExecutor.java:162)
at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute
(DefaultMojosExecutionStrategy.java:39)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:159)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:105)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:73)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:53)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:118)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:903)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:280)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:203)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:568)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
(Launcher.java:255)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:201)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:361)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:314)
Caused by: org.apache.maven.plugin.MojoExecutionException: Failed to render site
at org.apache.maven.plugins.site.render.SiteMojo.execute (SiteMojo.java:119)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
(DefaultBuildPluginManager.java:126)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2
(MojoExecutor.java:328)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute
(MojoExecutor.java:316)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:174)
at org.apache.maven.lifecycle.internal.MojoExecutor.access$000
(MojoExecutor.java:75)
at org.apache.maven.lifecycle.internal.MojoExecutor$1.run
(MojoExecutor.java:162)
at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute
(DefaultMojosExecutionStrategy.java:39)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:159)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:105)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:73)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:53)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:118)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:903)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:280)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:203)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:568)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
(Launcher.java:255)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:201)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:361)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:314)
Caused by: org.apache.maven.doxia.siterenderer.RendererException: Error
generating maven-surefire-report-plugin:3.5.0:report report
at
org.apache.maven.plugins.site.render.ReportDocumentRenderer.renderDocument
(ReportDocumentRenderer.java:210)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render
(DefaultSiteRenderer.java:300)
at org.apache.maven.plugins.site.render.SiteMojo.renderNonDoxiaDocuments
(SiteMojo.java:282)
at org.apache.maven.plugins.site.render.SiteMojo.renderLocale
(SiteMojo.java:147)
at org.apache.maven.plugins.site.render.SiteMojo.execute (SiteMojo.java:112)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
(DefaultBuildPluginManager.java:126)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2
(MojoExecutor.java:328)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute
(MojoExecutor.java:316)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:174)
at org.apache.maven.lifecycle.internal.MojoExecutor.access$000
(MojoExecutor.java:75)
at org.apache.maven.lifecycle.internal.MojoExecutor$1.run
(MojoExecutor.java:162)
at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute
(DefaultMojosExecutionStrategy.java:39)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:159)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:105)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:73)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:53)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:118)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:903)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:280)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:203)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:568)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
(Launcher.java:255)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:201)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:361)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:314)
Caused by: java.lang.NullPointerException: Cannot invoke "Object.toString()"
because "value" is null
at org.apache.maven.doxia.sink.impl.SinkUtils.getAttributeString
(SinkUtils.java:188)
at org.apache.maven.doxia.sink.impl.AbstractXmlSink.writeStartTag
(AbstractXmlSink.java:126)
at org.apache.maven.doxia.sink.impl.Xhtml5BaseSink.writeStartTag
(Xhtml5BaseSink.java:1647)
at org.apache.maven.doxia.sink.impl.AbstractXmlSink.writeStartTag
(AbstractXmlSink.java:95)
at org.apache.maven.doxia.sink.impl.Xhtml5BaseSink.anchor
(Xhtml5BaseSink.java:1204)
at org.apache.maven.doxia.sink.impl.AbstractSink.anchor
(AbstractSink.java:354)
at org.apache.maven.reporting.AbstractMavenReportRenderer.startSection
(AbstractMavenReportRenderer.java:132)
at org.apache.maven.reporting.AbstractMavenReportRenderer.startSection
(AbstractMavenReportRenderer.java:116)
at
org.apache.maven.plugins.surefire.report.SurefireReportRenderer.renderSectionPackages
(SurefireReportRenderer.java:220)
at
org.apache.maven.plugins.surefire.report.SurefireReportRenderer.renderBody
(SurefireReportRenderer.java:119)
at org.apache.maven.reporting.AbstractMavenReportRenderer.render
(AbstractMavenReportRenderer.java:93)
at
org.apache.maven.plugins.surefire.report.AbstractSurefireReport.executeReport
(AbstractSurefireReport.java:159)
at org.apache.maven.reporting.AbstractMavenReport.generate
(AbstractMavenReport.java:354)
at
org.apache.maven.plugins.site.render.ReportDocumentRenderer.renderDocument
(ReportDocumentRenderer.java:199)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render
(DefaultSiteRenderer.java:300)
at org.apache.maven.plugins.site.render.SiteMojo.renderNonDoxiaDocuments
(SiteMojo.java:282)
at org.apache.maven.plugins.site.render.SiteMojo.renderLocale
(SiteMojo.java:147)
at org.apache.maven.plugins.site.render.SiteMojo.execute (SiteMojo.java:112)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
(DefaultBuildPluginManager.java:126)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2
(MojoExecutor.java:328)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute
(MojoExecutor.java:316)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:174)
at org.apache.maven.lifecycle.internal.MojoExecutor.access$000
(MojoExecutor.java:75)
at org.apache.maven.lifecycle.internal.MojoExecutor$1.run
(MojoExecutor.java:162)
at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute
(DefaultMojosExecutionStrategy.java:39)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:159)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:105)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:73)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:53)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:118)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:903)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:280)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:203)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:568)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
(Launcher.java:255)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:201)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:361)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:314)
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[DEBUG] Shutting down adapter factory; available factories [file-lock,
rwlock-local, semaphore-local, noop]; available name mappers [discriminating,
file-gav, file-hgav, file-static, gav, static]
[DEBUG] Shutting down 'file-lock' factory
[DEBUG] Shutting down 'rwlock-local' factory
[DEBUG] Shutting down 'semaphore-local' factory
[DEBUG] Shutting down 'noop' factory
I can see the problem within:
https://github.com/apache/maven-doxia/blob/master/doxia-core/src/main/java/org/apache/maven/doxia/sink/impl/SinkUtils.java
171: Object value = att.getAttribute(key); // gives back null -
for what kind of key ever
173: if (value instanceof AttributeSet) { // works, because has
implicit null check
183: } else { // here we go
188: .append(value.toString()) / crash - missing null pointer check
before calling toString()
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