Guice 2.0的ClassNotFoundException

Question

下面的代码使用Guice 2.0产生错误。使用Guice 1.0，一切都很好。JDK是Java 6更新15。

public class App {
    public static void main(String[] args) {
        Guice.createInjector(new AbstractModule() {
            @Override
            protected void configure() {
                // just testing 
            }
        });
    }
}

错误是：

Exception in thread "main" java.lang.NoClassDefFoundError: [Lorg/aopalliance/intercept/MethodInterceptor;
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
    at java.lang.Class.getDeclaredMethods(Class.java:1791)
    at com.google.inject.internal.ProviderMethodsModule.getProviderMethods(ProviderMethodsModule.java:78)
    at com.google.inject.internal.ProviderMethodsModule.configure(ProviderMethodsModule.java:70)
    at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
    at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:232)
    at com.google.inject.spi.Elements.getElements(Elements.java:101)
    at com.google.inject.InjectorShell$Builder.build(InjectorShell.java:135)
    at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:102)
    at com.google.inject.Guice.createInjector(Guice.java:92)
    at com.google.inject.Guice.createInjector(Guice.java:69)
    at com.google.inject.Guice.createInjector(Guice.java:59)
    at App.main(App.java:6)
Caused by: java.lang.ClassNotFoundException: org.aopalliance.intercept.MethodInterceptor
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
    ... 14 more

可能是什么问题？

Answer 1

您错过了在类路径中将依赖项jar包含在类org.aopalliance.intercept.MethodInterceptor中的情况。