struts2基于注解且使用拦截器的文件上传配置

 @Action(value = "uploadBrand",
   interceptorRefs={@InterceptorRef(value="fileUpload",
    params={"allowTypes","image/bmp,image/png,image/gif,image/jpeg,image/pjpeg",
     "maximumSize","5242880"}),@InterceptorRef("defaultStack")},
   results={@Result(name="input",location="/WEB-INF/page/product/edit_brand.jsp?brand.code=${brand.code}")},
   params={"savePath","/images/brand"})