java - Maven 问题 - 依赖关系(未找到类异常)

Question

我正在开始一个新项目，它似乎有一些与 Maven 相关的问题。当我尝试启动我的网络应用程序时，它会给出与 bean 工厂创建相关的错误，因为找不到其他项目中引用的类。在这种情况下，我需要停止服务器，为其他项目运行 pom.xml，为我的项目运行 pom.xml，然后重新启动服务器。我觉得很奇怪，如果它们相关，maven 不应该自动运行该依赖项吗？

请参阅下面的错误消息:

2012-08-03 08:55:01,374 [domain-service:main][ERROR] org.springframework.web.context.ContextLoader  - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'assetService' defined in URL [file:/C:/Springsource/tc-server-6.0.20.domain.service/wtpwebapps/pumpkin-domain-service/WEB-INF/classes/applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: com/pumpkin/service/exception/ServiceException
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:965)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:282)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:204)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:741)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
    at org.apache.catalina.core.StandardService.start(StandardService.java:516)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:587)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:290)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415)
Caused by: java.lang.NoClassDefFoundError: com/pumpkin/service/exception/ServiceException
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1890)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:887)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1351)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1230)
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
    at java.lang.Class.getConstructor0(Class.java:2699)
    at java.lang.Class.getDeclaredConstructor(Class.java:1985)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:65)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:958)
    ... 28 more

非常感谢任何帮助! 预先感谢您!

Answer 1

我总是喜欢在得到答案时写下我的答案，这样我就可以帮助那些来到该页面寻找解决方案的人...我在互联网上查找了更多内容，最终在其他 stackoverflow post 上找到了解决方案:

Maven dependencies are not always transitive. If taac-backend-gui declares its dependency on com.wuntee.rsaAuthenticationManager with scope="test" or optional="true", com.wuntee.rsaAuthenticationManager won't automatically become a dependency of com.wuntee.taac Either of these would be consistent with the symptoms you describe.

干杯!