java使用OSGi和ApacheFelixIpojo与JDK11
我有一个围绕OSGi和iPOJO构建的项目，我正在尝试确定它是否仍然适用于JDK 11。它目前正在使用JDK 8。自从2014年发布最新版本的iPOJO（1.12.1）以来，它看起来不太乐观。在更新目标和maven编译器版本后，我遇到了以下问题：
[ERROR] Failed to execute goal org.apache.felix:maven-ipojo-plugin:1.12.1:ipojo-bundle (default) on project redacted: Execution default of goal org.apache.felix:maven-ipojo-plugin:1.12.1:ipojo-bundle failed. IllegalArgumentException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.felix:maven-ipojo-plugin:1.12.1:ipojo-bundle (default) on project redacted: Execution default of goal org.apache.felix:maven-ipojo-plugin:1.12.1:ipojo-bundle failed.
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
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:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
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.PluginExecutionException: Execution default of goal org.apache.felix:maven-ipojo-plugin:1.12.1:ipojo-bundle failed.
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
... 20 more
Caused by: java.lang.IllegalArgumentException
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.apache.felix.ipojo.manipulator.metadata.annotation.model.parser.AnnotationParser.read(AnnotationParser.java:32)
at org.apache.felix.ipojo.manipulator.metadata.annotation.registry.MetaAnnotationBindingRegistry.createBindings(MetaAnnotationBindingRegistry.java:94)
at org.apache.felix.ipojo.manipulator.metadata.annotation.registry.CompletableBindingRegistry.getBindings(CompletableBindingRegistry.java:45)
at org.apache.felix.ipojo.manipulator.metadata.annotation.registry.CompletableBindingRegistry.getBindings(CompletableBindingRegistry.java:43)
at org.apache.felix.ipojo.manipulator.metadata.annotation.registry.CompletableBindingRegistry.getBindings(CompletableBindingRegistry.java:43)
at org.apache.felix.ipojo.manipulator.metadata.annotation.registry.Selection.list(Selection.java:129)
at org.apache.felix.ipojo.manipulator.metadata.annotation.registry.Selection.get(Selection.java:98)
at org.apache.felix.ipojo.manipulator.metadata.annotation.MethodMetadataCollector.visitAnnotation(MethodMetadataCollector.java:69)
at org.objectweb.asm.ClassReader.b(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.apache.felix.ipojo.manipulator.metadata.AnnotationMetadataProvider.computeAnnotations(AnnotationMetadataProvider.java:111)
at org.apache.felix.ipojo.manipulator.metadata.AnnotationMetadataProvider.access$200(AnnotationMetadataProvider.java:44)
at org.apache.felix.ipojo.manipulator.metadata.AnnotationMetadataProvider$1.visit(AnnotationMetadataProvider.java:90)
at org.apache.felix.ipojo.manipulator.store.JarFileResourceStore.accept(JarFileResourceStore.java:161)
at org.apache.felix.ipojo.manipulator.metadata.AnnotationMetadataProvider.getMetadatas(AnnotationMetadataProvider.java:75)
at org.apache.felix.ipojo.manipulator.metadata.CompositeMetadataProvider.getMetadatas(CompositeMetadataProvider.java:53)
at org.apache.felix.ipojo.manipulator.Pojoization.pojoization(Pojoization.java:360)
at org.apache.felix.ipojo.manipulator.Pojoization.pojoization(Pojoization.java:243)
at org.apache.felix.ipojo.plugin.ManipulatorMojo.execute(ManipulatorMojo.java:265)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more
粗略地看，maven ipojo插件的asm依赖性似乎在JDK 11上遇到了问题，这是有道理的，因为ipojo对asm 5.0.4有一个可传递的依赖性，直到asm 7.0才添加JDK 11支持。我试图排除可传递依赖项，并将asm 7.0添加为一个依赖项，但仍然出现相同的错误
感谢您的关注，我非常感谢您提出任何其他想法或见解
# 1 楼答案
maven构建期间来自ASM的
IllegalArgumentException表示插件使用的ASM库版本对于当前的Java字节码来说太旧。Java 11字节码需要ASM 7（正如您所提到的），它在几周前才以稳定版本发布从JDK 9迁移到10时，可以通过明确声明ASM 6.2是对maven shade plugin的依赖来解决这个问题，例如：
这个技巧对JDK 11不起作用，它需要更新插件本身，例如
maven-shade-plugin和maven-plugin-plugin。正如你的努力所表明的，同样的道理也适用于maven-ipojo-plugin。如果插件没有维护，您可能应该考虑一个替代ipojo插件的方法，以便迁移到Java 11您可以尝试为
maven-compiler-plugin将target版本设置为1.8，这应该会使类文件与ipojo插件兼容。但是，您可能还必须将source版本设置为1.8，并且不能使用任何Java 9+语言功能