无法初始化类org.springframework.osgi.service.importer.support.OsgiServiceProxyFactoryBean

使用SpringSource Tool Suite 2.7.1，我在继承的应用程序中的几个XML文件的Problems视图中看到此错误（applicationContext.xml，osgi-context.xml和module-context.xml为不同的项目）：无法初始化类org.springframework.osgi.service.importer.support.OsgiServiceProxyFactoryBean

Error occured processing '/video_service/src/main/webapp/WEB-INF/applicationContext.xml': 
java.lang.NoClassDefFoundError: Could not initialize class org.springframework.osgi.service.importer.support.OsgiServiceProxyFactoryBean 
at java.lang.Class.forName0(Native Method) 
at java.lang.Class.forName(Unknown Source) 
at org.springframework.osgi.config.ReferenceBeanDefinitionParser.class$(ReferenceBeanDefinitionParser.java:68) 
at org.springframework.osgi.config.ReferenceBeanDefinitionParser.getBeanClass(ReferenceBeanDefinitionParser.java:68) 
at org.springframework.osgi.config.AbstractReferenceDefinitionParser.parseInternal(AbstractReferenceDefinitionParser.java:168) 
at org.springframework.beans.factory.xml.AbstractBeanDefinitionParser.parse(AbstractBeanDefinitionParser.java:59) 
at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:73) 
at org.springframework.ide.eclipse.beans.core.internal.model.namespaces.DelegatingNamespaceHandlerResolver$ElementTrackingNamespaceHandler.parse(DelegatingNamespaceHandlerResolver.java:177) 
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1335) 
at org.springframework.ide.eclipse.beans.core.internal.model.BeansConfig$ErrorSuppressingBeanDefinitionParserDelegate.parseCustomElement(BeansConfig.java:1293) 
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1325) 
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:135) 
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:93) 
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493) 
at org.springframework.ide.eclipse.beans.core.internal.model.BeansConfig$2.registerBeanDefinitions(BeansConfig.java:390) 
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390) 
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334) 
at org.springframework.ide.eclipse.beans.core.internal.model.BeansConfig$2.loadBeanDefinitions(BeansConfig.java:376) 
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302) 
at org.springframework.ide.eclipse.beans.core.internal.model.BeansConfig$3.call(BeansConfig.java:422) 
at org.springframework.ide.eclipse.beans.core.internal.model.BeansConfig$3.call(BeansConfig.java:1) 
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) 
at java.util.concurrent.FutureTask.run(Unknown Source) 
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) 
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) 
at java.util.concurrent.FutureTask.run(Unknown Source) 
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
at java.lang.Thread.run(Unknown Source)

出现在行

<osgi:reference id="facade" interface="ru.focusmedia.odp.pshd.integration.Facade" />

的错误，此界面看起来是这样的：

public interface Facade { 

    /** 
    * register callback for {@link InputTriggerFact} 
    * @param callback 
    */ 
    void addNotificationListener(InputCallback callback); 
    void addNotificationListener(FBCallback callback); 
    void addNotificationListener(UserCallback callback); 
    void addNotificationListener(RoleCallback callback); 

    /** 
    * unregister callback for {@link InputTriggerFact} 
    * @param callback 
    */ 
    void removeNotificationListener(InputCallback callback); 
    void removeNotificationListener(FBCallback callback); 
    void removeNotificationListener(UserCallback callback); 
    void removeNotificationListener(RoleCallback callback); 

    /** 
    * getting input by URL 
    * @param url 
    * @return 
    */ 
    Input getInput(String url); 

    /** 
    * getting output by URL 
    * @param url 
    * @return 
    */ 
    Output getOutput(String url); 

    /** 
    * @param input 
    * @return current (last) value for input, may be null 
    */ 
    Measure getCurrentValue(Input input); 

    /** 
    * request current value from input driver 
    * where value is comming, fire InputTriggerFact to InputCallback 
    * @param input 
    */ 
    void refreshValue(Input input); 

    /** 
    * @param input 
    * @param from 
    * @param to 
    * @param limit 
    * @return list of values for input by dates from - to range, may be null 
    */ 
    List<InputTriggerFact> getValues(Input input, Date from, Date to, int limit); 

    /** 
    * setting value on output 
    * @param output 
    * @param value 
    */ 
    public void setValue(Output output, Value<? extends Quantity> value); 
}

org.springframework.spring [3.0,3.1)已列入MANIFEST.MF的导入库部分。我试过直接添加org.springframework.osgi.service.importer.support到导入包，但这没有帮助。

奇怪的是，这是的不是阻止应用程序运行，但我怀疑它可能会导致其他问题，所以摆脱这些错误似乎是一个好主意。有什么我可以做的吗？

来源

2011-09-01 Alexey Romanov

消息“NoClassDefFoundError：无法初始化类XXX”报告以前的类加载尝试失败，类为XXX。为了诊断这一点，您需要查找先前故障的堆栈跟踪。它应该包含导致原始类初始化失败的问题的嵌套异常。

原始问题发生在XXX或其他某个类的静态初始化中。 JVM规范说JVM只会尝试一次为类运行类初始化。如果失败，则依赖它的类和类将保持失败状态，以防止它们被使用。如果应用程序代码（在这种情况下是Spring）再次通过加载它（或依赖于它的某个其他类）来尝试使用失败的类，则会出现此错误。

来源

2011-09-01 14:50:19

无法初始化类org.springframework.osgi.service.importer.support.OsgiServiceProxyFactoryBean

回答

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