java.lang.LinkageError: loader constraint violation......different type with nam

 项目中新增加了一个用Java 调用 .Net Webservice的Bundle，出现了下面的错误日志：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roModelServiceLocatorAdaptor' defined in URL [bundleentry://185.fwk1784707303/META-INF/spring/spring-config.xml]: Initialization of bean failed; nested exception is java.lang.LinkageError: loader constraint violation: loader (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously initiated loading for a different type with name "javax/xml/namespace/QName"
       at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
       at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
       at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
       at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
       at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
       at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
       at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
       at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
       at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.access$1600(AbstractDelegatedExecutionApplicationContext.java:62)
       at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$4.run(AbstractDelegatedExecutionApplicationContext.java:327)
       at org.springframework.osgi.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:87)
       at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.completeRefresh(AbstractDelegatedExecutionApplicationContext.java:292)

 

原因：

引起这个问题的原因只是猜测，在Classpath中有多个javax.xml.namespace.QName，OSGi在loader时用了不同的版本. OSGi的坑太多，具体原因不清楚.

 

解决方法：

Use construction method of injection for **LocatorAdaptor，将

 

<bean id="roModelServiceLocatorAdaptor" class="com.moodys.loan.mat.adaptor.ROModelServiceLocatorAdaptor">
	<property name="userService" ref="userService" />
</bean>

   修改成：

<bean id="roModelServiceLocatorAdaptor" class="com.moodys.loan.mat.adaptor.ROModelServiceLocatorAdaptor">
	<constructor-arg ref="userService" />
</bean>