widow.open 下载文件注意

在web.xml加入

<web-app>

        <mime-mapping>
                <extension> zip </extension>
                <mime-type> application/zip </mime-type>
        </mime-mapping>
        <mime-mapping>
                <extension> xls </extension>
                <mime-type> application/vnd.ms-excel </mime-type>
        </mime-mapping>
        <mime-mapping>  
                <extension> rar </extension>  
                <mime-type> application/octet-stream </mime-type>  
        </mime-mapping>

</web-app>

 

jsp文件

window.open("../reports/targetFiles/file.xls");