STS/Eclipse 错误：从插件调用代码时出现问题：“org.eclipse.core.resources”

Question

我编写了一个自定义注释和处理器，它实现了com.sun.source.util.TaskListener。 注释处理当前在作为 gradle 构建的一部分运行时有效，但是当我在 STS 中启用注释处理时，我收到以下错误：

Problems occurred when invoking code from plug-in: "org.eclipse.core.resources"

java.lang.NoClassDefFoundError: com/sun/source/util/TaskListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.eclipse.jdt.apt.core.internal.AnnotationProcessorFactoryLoader.loadJava6FactoryClasses(AnnotationProcessorFactoryLoader.java:638)
at org.eclipse.jdt.apt.core.internal.AnnotationProcessorFactoryLoader.loadFactories(AnnotationProcessorFactoryLoader.java:577)
at org.eclipse.jdt.apt.core.internal.AnnotationProcessorFactoryLoader.getJava6FactoriesAndAttributesForProject(AnnotationProcessorFactoryLoader.java:455)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:131)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:968)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:489)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:397)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:184)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:334)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:63)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:256)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:180)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:735)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:301)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:304)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:360)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:383)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:235)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: java.lang.ClassNotFoundException: com.sun.source.util.TaskListener
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 35 more

我尝试了一些方法来解决这个问题：

• 我已将已安装的 JRE 更改为指向已安装的 JDK
• 我在eclipse的JRE定义中添加了tools.jar作为外部jar
• 我尝试将 tools.jar 作为外部 jar 添加到已打开注释处理的项目中。
• 我还尝试将 tools.jar 添加为定义的 Classpath 变量

Answer 1

com.sun.source.util.TaskListener 是 javac 私有 API。 Eclipse 有它自己的编译器。尝试在 Eclipse 设置中将默认编译器设置为 Javac。