jboss 下载xls 不提示下载框 直接打开文件了 解决办法

下载 具体：

http://blog.csdn.net/wushuang5566110/article/details/7266300

1.

 response.setContentType("application/vnd.ms-excel ");

  response.addHeader("Content-disposition", "attachment; filename=456.xls");

2.webinfo下

   <mime-mapping>
     <extension> xls </extension>
    <mime-type> application/vnd.ms-excel </mime-type>
</mime-mapping>