Spring初始化创建JMS工厂出错

       前段时间公司新启动一个项目，在前期的架构搭建的时候不是怎么理想。于是，本人决定进行项目重构。花了一周时间，独立完成了。在此分享一下在这整个重构过程中遇到的问题以及解决方案。

        在重构接近尾声的时候，发现spring在初始化创建jms工厂的时候，bean工厂始终创建失败；困扰我一下午时间。

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jmsFactory' defined in class path resource [conf/spring.xml]: Initialization of bean failed; nested exception is java.lang.reflect.MalformedParameterizedTypeException
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
	at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351)
	... 37 more
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:105)
	at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:140)
	at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
	at sun.reflect.generics.repository.ConstructorRepository.getParameterTypes(ConstructorRepository.java:94)
	at java.lang.reflect.Method.getGenericParameterTypes(Method.java:292)
	at java.beans.FeatureDescriptor.getParameterTypes(FeatureDescriptor.java:387)
	at java.beans.MethodDescriptor.setMethod(MethodDescriptor.java:114)
	at java.beans.MethodDescriptor.<init>(MethodDescriptor.java:72)
	at java.beans.MethodDescriptor.<init>(MethodDescriptor.java:56)
	at java.beans.Introspector.getTargetMethodInfo(Introspector.java:1149)
	at java.beans.Introspector.getBeanInfo(Introspector.java:416)
	at java.beans.Introspector.getBeanInfo(Introspector.java:163)
	at org.springframework.beans.CachedIntrospectionResults.<init>(CachedIntrospectionResults.java:279)
	at org.springframework.beans.CachedIntrospectionResults.forClass(CachedIntrospectionResults.java:189)
	at org.springframework.beans.BeanWrapperImpl.getCachedIntrospectionResults(BeanWrapperImpl.java:177)
	at org.springframework.beans.BeanWrapperImpl.getPropertyDescriptors(BeanWrapperImpl.java:236)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.filterPropertyDescriptorsForDependencyCheck(AbstractAutowireCapableBeanFactory.java:1368)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.filterPropertyDescriptorsForDependencyCheck(AbstractAutowireCapableBeanFactory.java:1347)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1209)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
	... 43 more

最终在进行代码跟踪的时候，发现activemq-pool 的版本号是5.7.0，它依赖的commons-pool的版本号是1.6；而当前工程的commons-dbcp依赖的commons-pool的版本号是1.5.4；openjpa-kernelok依赖的commons-pool的版本号是1.3；ok，问题原因找到了。接下来，就是去解决问题。
        解决方案：
               在maven依赖中排除不需要的版本。

          <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
            <!-- 排除不需要的版本  start -->
            <exclusions>
                <exclusion>
                    <groupId>commons-pool</groupId>
                    <artifactId>commons-pool</artifactId>
                </exclusion>
            </exclusions>
            <!-- 排除不需要的版本  end -->
        </dependency>

        <dependency>
            <groupId>org.apache.openjpa</groupId>
            <artifactId>openjpa-kernel</artifactId>
            <version>1.0.4</version>
            <!-- 排除不需要的版本  start -->
            <exclusions>
                <exclusion>
                    <groupId>commons-pool</groupId>
                    <artifactId>commons-pool</artifactId>
                </exclusion>
            </exclusions>
             <!-- 排除不需要的版本  end -->
        </dependency>