使用AST时在Eclipse中出现NoClassDefFoundError

Question

尝试在Eclipse中的Java项目中使用AST时，出现以下错误消息：运行时：线程“ main”中的异常java.lang.NoClassDefFoundError：org / eclipse / core / runtime / IAdaptable

我尝试将core.runtime jar添加到构建路径，但这没有帮助。

该代码从一开始就失败：

AST ast = AST.newAST(AST.JLS4);

我也尝试将所有的jar添加到计算机中，但无济于事。 有任何想法吗？

堆栈跟踪：

Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/core/runtime/IAdaptable
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(Unknown Source)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.access$000(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(Unknown Source)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.access$000(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at testRun.main(testRun.java:44)
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.IAdaptable
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 25 more

Answer 1

除了将org.eclipse.jdt.core_[version_number].jar添加到构建路径之外，您还需要添加org.eclipse.equinox.common_[version_number].jar 。