本文介绍了Maven / Spring / Java：ClassNotFoundException - 但我知道类在那里的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有2个maven项目设置如下：
而'com.wuntee.rsaAuthenticationManager'是'taac-backend-鬼。当在taac-backend-gui中运行测试用例时，一切都执行正常，但是当尝试启动taac-web时，我得到以下ClassNotFoundException - 包含类weblogic.security.SSL.TrustManager的库也在我的本地maven仓库，并设置为com.wuntee.rsaAuthenticationManager的依赖项。有谁知道为什么会得到这个错误？我也试图直接将包含TrustManager的库添加到taac-web项目中，并且仍然得到相同的异常。任何想法？
错误[com.wuntee.taac.business.TaacWorkshop] [主] - 无法创建rsa dao：
com.rsa.common.SystemException：命令目标（CommandAPIConnection）初始化失败
java.lang.NoClassDefFoundError：weblogic / security / SSL / TrustManager
在com.rsa.command.ConnectionFactory.getSpringBeanTarget（ConnectionFactory .java：212）
在com.rsa.command.ConnectionFactory.getTarget（ConnectionFactory.java:170）
在com.rsa.command.ConnectionFactory.getConnection（ConnectionFactory.java:246）
at com.wuntee.rsaAuthenticationManager.RsaAuthenticationManagerDao.init（RsaAuthenticationManagerDao.java:60）
at com.wuntee.taac.business.TaacWorkshop。< init>（TaacWorkshop.java:68）
at sun .reflect.NativeConstructorAccessorImpl.newInstance0（Native Method）
at sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:39）
at sun.reflect.DelegatingConstructorAccessorIm pl.newInstance（DelegatingConstructorAccessorImpl.java:27）
在java.lang.reflect.Constructor.newInstance（Constructor.java:501）
在org.springframework.beans.BeanUtils.instantiateClass（BeanUtils.java： 126）
在org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate（SimpleInstantiationStrategy.java:72）
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean（AbstractAutowireCapableBeanFactory.java： 939）
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:892）
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java： 479）
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:450）
在org.springframework.beans.factory.support.A bstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:290）
在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222）
在org.springframework.beans.factory.support .AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:287）
在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:189）
在org.springframework.beans.factory.support .DefaultListableBeanFactory.preInstantiateSingletons（DefaultListableBeanFactory.java:562）
在org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:871）
在org.springframework.context.support.AbstractApplicationContext.refresh （AbstractApplicationContext.java:423）
在org.springframework.web.context.ContextLoader.createWebApplicationContext（ContextLoader.java:272）
在org.springframework.web.context.ContextLoader.ini tWebApplicationContext（ContextLoader.java:196）
在org.springframework.web.context.ContextLoaderListener.contextInitialized（ContextLoaderListener.java:47）
在org.apache.catalina.core.StandardContext.listenerStart（StandardContext。 java：3972）
在org.apache.catalina.core.StandardContext.start（StandardContext.java:4467）
在org.apache.catalina.core.ContainerBase.start（ContainerBase.java:1045）
在org.apache.catalina.core.StandardHost.start（StandardHost.java:722）
在org.apache.catalina.core.ContainerBase.start（ContainerBase.java:1045）
在org.apache.catalina.core.StandardEngine.start（StandardEngine.java:443）
在org.apache.catalina.core.StandardService.start（StandardService.java:516）
在org.apache .catalina.core.StandardServer.start（StandardServer.java:710）
在org.apache.catalina.startup.Catalina.start（Catalina.java:593）
at sun.reflect.NativeMethodAccessorImpl.invoke0 （Native Method）
at sun.r eflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:39）
at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:25）
在java.lang.reflect.Method.invoke（Method.java： 592）
在org.apache.catalina.startup.Bootstrap.start（Bootstrap.java:289）
在org.apache.catalina.startup.Bootstrap.main（Bootstrap.java:414）
导致：com.rsa.ims.components.NoSuchComponentException：无法找到bean CommandAPIConnection
在com.rsa.ims.components.spring.SpringComponentManagerImpl.getBean（SpringComponentManagerImpl.java:71）
在com.rsa.command.ConnectionFactory.getSpringBeanTarget（ConnectionFactory.java:209）
... 39更多
导致：org.springframework.beans.factory.BeanCreationException：创建名称为CacheableCommandTargetBasicAuth的bean时出错：FactoryBean抛出异常创建对象;嵌套异常是org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean（FactoryBeanRegistrySupport.java:150）上的java.lang.reflect.InvocationTargetException
$ org.springframework.beans.factory.support上的
。 FactoryBeanRegistrySupport.getObjectFromFactoryBean（FactoryBeanRegistrySupport.java:102）
在org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance（AbstractBeanFactory.java:1387）
在org.springframework.beans.factory.support。 AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:301）
在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:189）
在org.springframework.context.support.AbstractApplicationContext。 getBean（AbstractApplicationContext.java:1044）
在com.rsa.ims.components.spring.SpringComponentManagerImpl.getBean（SpringComponentManagerImpl.java:69）
... 40更多
导致：java .lang.reflect.Inv ocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0（Native Method）
at sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:39）
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl .java：27）
在java.lang.reflect.Constructor.newInstance（Constructor.java:501）
在com.rsa.command.RemoteCommandTargetFactoryBean.getObject（RemoteCommandTargetFactoryBean.java:273）
在org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean（FactoryBeanRegistrySupport.java:143）
... 46更多
导致：java.lang.NoClassDefFoundError：weblogic / security / SSL / TrustManager
在java.lang.Class.forName0（本机方法）
在java.lang.Class.forName（Class.java:164）
在com.rsa.command.InitialContextFactoryLocator.getInitialContextFactory （InitialContextFactoryLocator.java:72）
在com.rs a.command.EJBRemoteTarget。< init>（EJBRemoteTarget.java:189）
... 52更多
在com.wuntee.rsaAuthenticationManager项目中，缺少类的依赖关系定义为：
;依赖性>
< groupId> com.rsa< / groupId>
< artifactId> wlfullclient< / artifactId>
< version> 1.0< / version>
< type> jar< / type>
< scope> compile< / scope>
< / dependency>
注意：此dep也可以添加到taac-web项目中，我仍然得到相同例外。
我也确认，该类的.jar位于tomcat web-root目录的WEB-INF / lib /目录中，该类确实存在...：
./ wlfullclient-1.0.jar
weblogic / security / SSL / TrustManager.class
weblogic / security / SSL / TrustManagerJSSE.class
解决方案
p> Maven依赖不总是传递的。如果taac-backend-gui使用 scope =test或 optional =true，com.wuntee.rsaAuthenticationManager不会自动成为com.wuntee.taac的依赖项。
其中之一与您所描述的症状一致。 / p>
I have 2 maven projects set up like this:
And 'com.wuntee.rsaAuthenticationManager' is a dep in 'taac-backend-gui'. When running a test case in taac-backend-gui, everything executes fine, but when trying to start the taac-web, I get the following ClassNotFoundException - the library that contains the class 'weblogic.security.SSL.TrustManager' is also in my local maven repository, and set as a dependency of com.wuntee.rsaAuthenticationManager. Does anyone know why I would be getting this error? I have also attempted to directly add the library containing TrustManager to the taac-web project, and still get the same Exception. Any ideas?
ERROR[com.wuntee.taac.business.TaacWorkshop][main] - couldnt create rsa dao:
com.rsa.common.SystemException: Command target (CommandAPIConnection) initialization failure
java.lang.NoClassDefFoundError: weblogic/security/SSL/TrustManager
at com.rsa.command.ConnectionFactory.getSpringBeanTarget(ConnectionFactory.java:212)
at com.rsa.command.ConnectionFactory.getTarget(ConnectionFactory.java:170)
at com.rsa.command.ConnectionFactory.getConnection(ConnectionFactory.java:246)
at com.wuntee.rsaAuthenticationManager.RsaAuthenticationManagerDao.init(RsaAuthenticationManagerDao.java:60)
at com.wuntee.taac.business.TaacWorkshop.<init>(TaacWorkshop.java:68)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:501)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:72)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:939)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:892)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:479)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:562)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:871)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:272)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:196)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
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:593)
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:592)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: com.rsa.ims.components.NoSuchComponentException: Unable to locate bean CommandAPIConnection
at com.rsa.ims.components.spring.SpringComponentManagerImpl.getBean(SpringComponentManagerImpl.java:71)
at com.rsa.command.ConnectionFactory.getSpringBeanTarget(ConnectionFactory.java:209)
... 39 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'CacheableCommandTargetBasicAuth': FactoryBean threw exception on object creation; nested exception is java.lang.reflect.InvocationTargetException
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:150)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1387)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1044)
at com.rsa.ims.components.spring.SpringComponentManagerImpl.getBean(SpringComponentManagerImpl.java:69)
... 40 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:501)
at com.rsa.command.RemoteCommandTargetFactoryBean.getObject(RemoteCommandTargetFactoryBean.java:273)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:143)
... 46 more
Caused by: java.lang.NoClassDefFoundError: weblogic/security/SSL/TrustManager
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at com.rsa.command.InitialContextFactoryLocator.getInitialContextFactory(InitialContextFactoryLocator.java:72)
at com.rsa.command.EJBRemoteTarget.<init>(EJBRemoteTarget.java:189)
... 52 more
In the com.wuntee.rsaAuthenticationManager project, the dependancy that has the missing class is defined as:
<dependency>
<groupId>com.rsa</groupId>
<artifactId>wlfullclient</artifactId>
<version>1.0</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
Note: This dep can also be added to the taac-web project, and I still get the same exception.
I have also confirmed that the .jar with the class is in the WEB-INF/lib/ directory of the tomcat web-root directory, and that the class does exist...:
./wlfullclient-1.0.jar
weblogic/security/SSL/TrustManager.class
weblogic/security/SSL/TrustManagerJSSE.class
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.
这篇关于Maven / Spring / Java：ClassNotFoundException - 但我知道类在那里的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！