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我在 Spring XD 中创建了一个自定义模块，在其中访问 Oracle DB 并使用 ehcache 缓存结果。除了 xd/lib 中存在的 jar 之外，我使用的是“ehcache-2.9.0.jar 和 ojdbc6-11.1. 0.7.0.jar”在我的模块中。我为我的自定义模块创建了 UBER jar。Uber Jar/lib 包含我添加的附加 jar。当我在 XD env 中上传 uberjar 时，模块上传命令运行良好。但是当我创建流时，我得到 java.lang.NoClassDefFoundError：net/sf/ehcache/CacheManager。下面给出了堆栈跟踪。如果我将 ehcache-2.9.0.jar 放在 xd/lib 文件夹中并重新启动 xd，我可以创建流，但它违背了 uber jar 的目的。有什么建议/解决方案吗？

2015-10-05T21:52:37-0400 1.2.0.RELEASE INFO DeploymentSupervisor-0 zk.ZKStreamDeploymentHandler - Deployment status for stream 'reconPublicationDev': DeploymentStatus{state=failed,error(s)=org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'integrationEvaluationContext': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: net/sf/ehcache/CacheManager
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:736)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
        at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:139)
        at org.springframework.xd.module.core.SimpleModule.initialize(SimpleModule.java:213)
        at org.springframework.xd.dirt.module.ModuleDeployer.doDeploy(ModuleDeployer.java:217)
        at org.springframework.xd.dirt.module.ModuleDeployer.deploy(ModuleDeployer.java:200)
        at org.springframework.xd.dirt.server.container.DeploymentListener.deployModule(DeploymentListener.java:365)
        at org.springframework.xd.dirt.server.container.DeploymentListener.deployStreamModule(DeploymentListener.java:334)
        at org.springframework.xd.dirt.server.container.DeploymentListener.onChildAdded(DeploymentListener.java:181)
        at org.springframework.xd.dirt.server.container.DeploymentListener.childEvent(DeploymentListener.java:149)
        at org.apache.curator.framework.recipes.cache.PathChildrenCache$5.apply(PathChildrenCache.java:509)
        at org.apache.curator.framework.recipes.cache.PathChildrenCache$5.apply(PathChildrenCache.java:503)
        at org.apache.curator.framework.listen.ListenerContainer$1.run(ListenerContainer.java:92)
        at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:297)
        at org.apache.curator.framework.listen.ListenerContainer.forEach(ListenerContainer.java:83)
        at org.apache.curator.framework.recipes.cache.PathChildrenCache.callListeners(PathChildrenCache.java:500)
        at org.apache.curator.framework.recipes.cache.EventOperation.invoke(EventOperation.java:35)
        at org.apache.curator.framework.recipes.cache.PathChildrenCache$10.run(PathChildrenCache.java:762)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: net/sf/ehcache/CacheManager
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
        at java.lang.Class.getDeclaredMethods(Class.java:1975)
        at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:571)
        at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:488)
        at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:474)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:241)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1065)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1038)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getSingletonFactoryBeanForTypeCheck(AbstractAutowireCapableBeanFactory.java:860)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryBean(AbstractAutowireCapableBeanFactory.java:790)
        at org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(AbstractBeanFactory.java:542)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:436)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:412)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:519)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:512)
        at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1052)
        at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:227)
        at org.springframework.integration.config.IntegrationEvaluationContextFactoryBean.afterPropertiesSet(IntegrationEvaluationContextFactoryBean.java:129)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
        ... 34 more
Caused by: java.lang.ClassNotFoundException: net.sf.ehcache.CacheManager
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 55 more
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2 回答 2

0

我会考虑以下事情

1）如果自定义模块正确上传，即检查您的自定义模块文件夹，如果 uber jar 可用。

2）我会做一个jar -vft <jar file name>看看包含违规类的罐子是否肯定在优步罐子里。

3）如果我正在运行分布式模式，那么我必须确保该custom-modules文件夹在管理员和容器之间共享，并且容器节点custom-modules文件夹具有 jar 文件。custom-modules了解文件夹必须共享或管理员和容器之间的目录内容通过外部方式保持同步非常重要- 如果您尚未将 custom-modules 文件夹设置为共享文件夹，XD 将不会同步它。

于 2015-10-10T16:47:19.223 回答
0

我的建议是使用 Maven 着色插件在 uber jar 中创建一个展开的依赖项。在您的情况下，ehcache 在模块类加载器中，而 Spring-Context 和 Spring-context-support 在父类加载器中。这将导致 bean(type) 注入失败。使用 shaded 插件创建具有必要依赖项以及 Spring-Context 和 Spring-context-support 的 Uber jar。这个 uber jar 版本将解决您的问题。

于 2015-10-07T18:44:19.193 回答