Spring 3 和 MyBatis 3.0.4/3.0.6 : MalformedParameterizedTypeException

Question

我正在尝试在 Maven 环境中将 Spring 3.0.5.RELEASE 与 MyBatis 一起使用。我添加了 mybatis-spring 依赖项。由于 MalformedParameterizedTypeException(下面包含详细的堆栈跟踪)，结果不起作用。

堆栈跟踪:

SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.reflect.MalformedParameterizedTypeException
    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:563)
    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:276)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4723)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5226)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5221)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
    at java.util.concurrent.FutureTask.run(FutureTask.java:166)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.reflect.MalformedParameterizedTypeException
    at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.validateConstructorArguments(ParameterizedTypeImpl.java:60)
    at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.<init>(ParameterizedTypeImpl.java:53)
    at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.make(ParameterizedTypeImpl.java:95)
    at sun.reflect.generics.factory.CoreReflectionFactory.makeParameterizedType(CoreReflectionFactory.java:104)
    at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:140)
    at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
    at sun.reflect.generics.visitor.Reifier.visitArrayTypeSignature(Reifier.java:159)
    at sun.reflect.generics.tree.ArrayTypeSignature.accept(ArrayTypeSignature.java:42)
    at sun.reflect.generics.repository.ConstructorRepository.getParameterTypes(ConstructorRepository.java:94)
    at java.lang.reflect.Method.getGenericParameterTypes(Method.java:300)
    at java.beans.FeatureDescriptor.getParameterTypes(FeatureDescriptor.java:385)
    at java.beans.MethodDescriptor.setMethod(MethodDescriptor.java:116)
    at java.beans.MethodDescriptor.<init>(MethodDescriptor.java:74)
    at java.beans.MethodDescriptor.<init>(MethodDescriptor.java:58)
    at java.beans.Introspector.getTargetMethodInfo(Introspector.java:1196)
    at java.beans.Introspector.getBeanInfo(Introspector.java:423)
    at java.beans.Introspector.getBeanInfo(Introspector.java:189)
    at org.springframework.beans.CachedIntrospectionResults.<init>(CachedIntrospectionResults.java:224)
    at org.springframework.beans.CachedIntrospectionResults.forClass(CachedIntrospectionResults.java:149)
    at org.springframework.beans.BeanWrapperImpl.getCachedIntrospectionResults(BeanWrapperImpl.java:305)
    at org.springframework.beans.BeanWrapperImpl.getPropertyDescriptorInternal(BeanWrapperImpl.java:335)
    at org.springframework.beans.BeanWrapperImpl.isWritableProperty(BeanWrapperImpl.java:407)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1327)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    ... 19 more

Answer 1

有很多关于这个 iusse 的帖子，但大多数都提到该问题是由于类路径中某处存在某些 Spring 2 依赖项而引起的，而我的情况并非如此:

• http://mybatis-user.963551.n3.nabble.com/mybatis-integration-with-Spring-2-5-not-working-td2499805.html
• http://groups.google.com/group/mybatis-user/browse_thread/thread/42698cff74504603

第一个链接提到了与 Spring 2 的不兼容性，因为 BeanFactory 在 Spring 3 中被参数化，但在 Spring 2 中没有。好吧，事实证明，真正的问题是，我有一个单独的 MyBatis 版本(3.0 .4)在我的依赖项中。我将版本3.0.4更改为版本3.0.6，一切正常。通常，如果项目(或父项目!)中的某个位置没有单独的 MyBatis 依赖项，来自 Maven 的 mybatis-spring Artifact 会附带 MyBatis 3.0.6。

旁注:我使用的 Maven 依赖项管理系统还存在一些其他问题，因为更改后的 pom.xml 依赖项不会传播到顶级项目。显然，在运行 mvn clean install -Dmaven.text.skip=true 后，依赖项已传播到顶级项目，并且一切正常。