| Re: [aspectj-users] aspectjtools fail with NPE during maven build |
It is a bit difficult to debug a Maven POM without any code, especially one with unusual settings like your mix of aspect library, custom includes and custom weave directory. I wonder what those are all for. I never use custom settings like those, even when using aspect libraries.
So please create an MCVE on GitHub. I need something to compile (and run after I fixed the build) in order to reproduce your problem. I have never seen anything like it. Just create a minimal Maven project with just as many modules as needed to reproduce the error. In each module, there can be very simple aspect and application code, I do not need your original source code. But it should be reproducible. Then I can probably help you pinpoint the root cause and maybe suggest an alternative approach or fix something.
raimondas@xxxxxxxxxx schrieb am 12.02.2022 19:38 (GMT +07:00):
Hi,We are doing migration of our project to Java 11 and got blocked by this aspectjtools fail with NPE during maven build. Context:1. Java 11 (AdoptOpenJDK jdk-11.0.10.9-hotspot)2. aspectj-maven-plugin v1.143. aspectjtools v1.9.74. pom.xml snippet<plugin><groupId>org.codehaus.mojo</groupId><artifactId>aspectj-maven-plugin</artifactId><version>1.14</version><configuration><complianceLevel>11</complianceLevel><source>11</source><target>11</target><showWeaveInfo>true</showWeaveInfo><verbose>true</verbose><aspectLibraries><aspectLibrary><groupId>xxx.xxx.xxx</groupId><artifactId>xxx-aspects</artifactId></aspectLibrary></aspectLibraries><includes><include>**/*.aj</include><include>**/*.class</include></includes><Xlint>cantFindType=ignore</Xlint><weaveDirectories><weaveDirectory>${project.build.directory}/classesToWeav</weaveDirectory></weaveDirectories></configuration><executions><execution><!-- Compile and weave aspects after all classes compiled by javac --><phase>process-classes</phase><goals><goal>compile</goal></goals></execution></executions><dependencies><dependency><groupId>org.aspectj</groupId><artifactId>aspectjtools</artifactId><version>1.9.7<version><scope>compile</scope></dependency></dependencies></plugin>5. Stack trace:[ERROR] Failed to execute goal org.codehaus.mojo:aspectj-maven-plugin:1.14.0:compile (default) on project xxx: AJC compiler errors:[ERROR] abort ABORT -- (NullPointerException) null[ERROR] null[ERROR] java.lang.NullPointerException[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.batch.ClasspathJmod.getModulesDeclaringPackage(ClasspathJmod.java:146)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.batch.ClasspathLocation.isPackage(ClasspathLocation.java:184)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.batch.ClasspathJmod.findClass(ClasspathJmod.java:55)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.batch.FileSystem.internalFindClass(FileSystem.java:544)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.batch.FileSystem.findClass(FileSystem.java:464)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.batch.FileSystem.findType(FileSystem.java:617)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.env.IModuleAwareNameEnvironment.findType(IModuleAwareNameEnvironment.java:101)[ERROR] at org.aspectj.ajdt.internal.core.builder.StatefulNameEnvironment.findType(StatefulNameEnvironment.java:101)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.createPlainPackage(LookupEnvironment.java:1151)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.buildTypeBindings(CompilationUnitScope.java:136)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.buildTypeBindings(LookupEnvironment.java:487)[ERROR] at org.aspectj.ajdt.internal.compiler.lookup.AjLookupEnvironment.buildTypeBindings(AjLookupEnvironment.java:1471)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.Compiler.internalBeginToCompile(Compiler.java:870)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.Compiler.beginToCompile(Compiler.java:395)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:449)[ERROR] at org.aspectj.org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:427)[ERROR] at org.aspectj.ajdt.internal.core.builder.AjBuildManager.performCompilation(AjBuildManager.java:1096)[ERROR] at org.aspectj.ajdt.internal.core.builder.AjBuildManager.performBuild(AjBuildManager.java:275)[ERROR] at org.aspectj.ajdt.internal.core.builder.AjBuildManager.batchBuild(AjBuildManager.java:188)[ERROR] at org.aspectj.ajdt.ajc.AjdtCommand.doCommand(AjdtCommand.java:103)[ERROR] at org.aspectj.ajdt.ajc.AjdtCommand.runCommand(AjdtCommand.java:47)[ERROR] at org.aspectj.tools.ajc.Main.run(Main.java:372)[ERROR] at org.aspectj.tools.ajc.Main.runMain(Main.java:250)[ERROR] at org.codehaus.mojo.aspectj.AbstractAjcCompiler.execute(AbstractAjcCompiler.java:568)[ERROR] at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)[ERROR] at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)[ERROR] at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)[ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)[ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)[ERROR] at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)[ERROR] at org.apache.maven.cli.MavenCli.execute(MavenCli.java:956)[ERROR] at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)[ERROR] at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)[ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[ERROR] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[ERROR] at java.base/java.lang.reflect.Method.invoke(Method.java:566)[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)[ERROR]The problem is that ClasspathJmod objects for JMOD files have zipFile=nullhence this code in ClasspathJmode failsAfter some more patching and debugging I also found that some of ClasspathJar objects throw NPE for the same reason – zipFile is nullI could not find if there is some configuration missing or something else that has to be provided in pom.xml so that aspect plugin finishes successfully. Appreciate any help on this.
