search

vaadin / platform

Vaadin platform 10+ is a Java web development platform based on Vaadin web components. If you don't know to which repository your bug report should be filed, use this and we'll move it to the right one.
https://vaadin.com
550 stars 78 forks source link

Starting a new project in VS Code always fails on the first try #6819

Open Artur- opened 4 days ago

Artur- commented 4 days ago

Describe the bug

image Failed to execute mojo com.vaadin:vaadin-maven-plugin:24.4.12:prepare-frontend {execution: default} (com.vaadin:vaadin-maven-plugin:24.4.12:prepare-frontend:default:process-resources)

org.eclipse.core.runtime.CoreException: Failed to execute mojo com.vaadin:vaadin-maven-plugin:24.4.12:prepare-frontend {execution: default}
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeMojo(MavenExecutionContext.java:404)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.lambda$2(MavenExecutionContext.java:355)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:458)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:339)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:354)
    at org.eclipse.m2e.core.project.configurator.MojoExecutionBuildParticipant.build(MojoExecutionBuildParticipant.java:57)
    at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.lambda$2(MavenBuilderImpl.java:159)
    at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:721)
    at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:139)
    at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:164)
    at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1)
    at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$1(MavenBuilder.java:109)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:458)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:292)
    at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$0(MavenBuilder.java:100)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:458)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:339)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:278)
    at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:83)
    at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:192)
    at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:1077)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:296)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:352)
    at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:441)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:444)
    at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:555)
    at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:503)
    at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:585)
    at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:207)
    at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:300)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: org.apache.maven.plugin.MojoFailureException: Could not execute prepare-frontend goal.
    at com.vaadin.flow.plugin.maven.PrepareFrontendMojo.execute(PrepareFrontendMojo.java:66)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:126)
    at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeMojo(MavenExecutionContext.java:402)
    ... 32 more
Caused by: com.vaadin.flow.server.ExecutionFailedException: Error occured during goal execution: Cannot invoke "java.lang.Class.isInterface()" because the return value of "org.reflections.Reflections.forClass(String, java.lang.ClassLoader[])" is null

Please run Maven with the -e switch (or Gradle with the --stacktrace switch), to learn the full stack trace.
    at com.vaadin.flow.plugin.base.BuildFrontendUtil.prepareFrontend(BuildFrontendUtil.java:178)
    at com.vaadin.flow.plugin.maven.PrepareFrontendMojo.execute(PrepareFrontendMojo.java:64)
    ... 34 more
Caused by: java.lang.NullPointerException: Cannot invoke "java.lang.Class.isInterface()" because the return value of "org.reflections.Reflections.forClass(String, java.lang.ClassLoader[])" is null
    at org.reflections.Reflections.lambda$getTypesAnnotatedWith$12(Reflections.java:405)
    at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:178)
    at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
    at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1845)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
    at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
    at org.reflections.util.QueryFunction.lambda$filter$3(QueryFunction.java:32)
    at org.reflections.util.QueryFunction.lambda$add$9(QueryFunction.java:66)
    at org.reflections.util.QueryFunction.lambda$add$9(QueryFunction.java:66)
    at org.reflections.util.QueryFunction.lambda$asClass$13(QueryFunction.java:89)
    at org.reflections.Reflections.get(Reflections.java:365)
    at org.reflections.Reflections.getTypesAnnotatedWith(Reflections.java:403)
    at com.vaadin.flow.server.scanner.ReflectionsClassFinder.getAnnotatedClasses(ReflectionsClassFinder.java:87)
    at com.vaadin.flow.server.frontend.scanner.ClassFinder$CachedClassFinder.lambda$getAnnotatedClasses$0(ClassFinder.java:154)
    at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1220)
    at com.vaadin.flow.server.frontend.scanner.ClassFinder$CachedClassFinder.getAnnotatedClasses(ClassFinder.java:153)
    at com.vaadin.flow.server.frontend.scanner.FullDependenciesScanner.verifyTheme(FullDependenciesScanner.java:390)
    at com.vaadin.flow.server.frontend.scanner.FullDependenciesScanner.discoverTheme(FullDependenciesScanner.java:349)
    at com.vaadin.flow.server.frontend.scanner.FullDependenciesScanner.<init>(FullDependenciesScanner.java:141)
    at com.vaadin.flow.server.frontend.scanner.FullDependenciesScanner.<init>(FullDependenciesScanner.java:94)
    at com.vaadin.flow.server.frontend.scanner.FrontendDependenciesScanner$FrontendDependenciesScannerFactory.createScanner(FrontendDependenciesScanner.java:93)
    at com.vaadin.flow.server.frontend.NodeTasks.<init>(NodeTasks.java:125)
    at com.vaadin.flow.plugin.base.BuildFrontendUtil.prepareFrontend(BuildFrontendUtil.java:172)
    ... 35 more

Expected-behavior

The project starts

Reproduction

npm init vaadin@latest open project in VS Code run the Application class

System Info

Vaadin 24.4.12

Artur- commented 4 days ago

This is presumably related to

  1. The project using Java 21
  2. VS Code running the prepare-frontend target automatically because of some existing lifecycle mapping for Eclipse
  3. VS Code not using Java 21 when running that Maven task