spring工厂实例化异常BeanDefinitionStoreException

Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: Passed-in Resource [resource loaded through InputStream] contains an open stream: cannot determine validation mode automatically. Either pass in a Resource that is able to create fresh streams, or explicitly specify the validationMode on your XmlBeanDefinitionReader instance.
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.detectValidationMode(XmlBeanDefinitionReader.java:449)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.getValidationModeForResource(XmlBeanDefinitionReader.java:430)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:387)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:78)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:66)
at com.bigner.mybld.springtest.SpringTest.main(SpringTest.java:76)
网上找一下原因是：
跟踪spring源码看到要求Resource.isopen必须是false的，而
InputStream in=new FileInputStream("....");
InputStreamResource inr=new InputStreamResource(in);
这两句执行后inr.isopen是true
再执行XmlBeanFactory factory=new XmlBeanFactory(inr);就会抛出上面的异常，而用spring的ClassPathResource isr=new ClassPathResource("applicationContext.xml");
后可以看到isr.isopen是false的。具体如何解决还需要研究spring的源码。
参考代码：
               InputStream is = new FileInputStream("bean.xml");
InputStreamResource isr = new InputStreamResource(is);
XmlBeanFactory factory = new XmlBeanFactory(isr);
/*File file = new File("绝对路径\\bean.xml");
// FileSystemResource fsr = new FileSystemResource(file);
ClassPathResource fsr=new ClassPathResource("bean.xml");
BeanFactory factory = new XmlBeanFactory(fsr);*/