1.<span style="font-family: Helvetica, Tahoma, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;">表單標籤中設置enctype="multipart/form-data"來確保匿名上載文件的正確編碼。</span>
<s:form action="part_add.action" enctype="multipart/form-data">
<table>
<tr><td><s:file name="file" label="檢測報告"></s:file></td></tr>
<tr><td><input type='submit' value='保存' id="save"></td></tr>
</table>
</s:form>
2.在Struts2.xml中加入
<constant name="struts.multipart.maxSize" value="9000000"/>
確保文件大小