webwork中jsp上传图片有关问题！

webwork中jsp上传图片问题！！
我用的webwork框架。   我在作一个jsp页面，中页面中有写信息和上传图片。然后实现提交到数据库中。请问这个图片上传的功能怎么实现啊？

------解决方案--------------------
<%@ page import= "org.apache.commons.fileupload.* "%>
<!--文件上传的包在的资源里-->

<FORM action= "../QU_BJDWH/SendEmail.jsp " enctype= "multipart/form-data " method= "post " name= "form1 " id= "form1 " onSubmit= "return checkonsubmit() " >
<input type= "hidden " id= "state " name= "state " value= "yy ">
<div>
<table border= "0 " cellpadding= "3 " cellspacing= "0 " align= "center ">

<tr>

<td >
<nmttag:label id= "BAS_BJDYJ.lbl_operation_center " value= "QU_BJDSDEM.ReceiveEmail " />
</td>
<td >
<nmttag:text id= "QU_BJDSDEM.ReceiveEmail " width= " <%=new Integer(410)%> " value= " <%= resieve%> " /> &nbsp;*
</td>
</tr>

<tr>
<td>
<nmttag:label id= "BAS_BJDYJ.lbl_operation_center " value= "QU_BJDSDEM.CCEmail " />
</td>
<td>
<nmttag:text id= "QU_BJDSDEM.SendEmailMan " width= " <%=new Integer(410)%> " value= " <%= sende%> " /> &nbsp;
</td>
</tr>

<tr>
<td>
<nmttag:label id= "BAS_BJDYJ.lbl_email_title " value= "BAS_BJDYJ.lbl_email_title " />
</td>
<td>
<nmttag:text id= "BAS_BJDYJ.txtEmail_title " value= " <%=titles %> " width= " <%=new Integer(410)%> " fieldLength= " <%=new Integer(100)%> "/> &nbsp;
</td>
</tr>

</table>
<div align= "center ">

</div>
<table border= "0 " cellpadding= "3 " cellspacing= "0 " align= "center ">
<tr>
<td>
<nmttag:label id= "BAS_BJDYJ.lbl_email_content " value= "BAS_BJDYJ.lbl_email_content " />
</td>
<td >
&nbsp; <nmttag:textarea id= "BAS_BJDYJ.txtEmail_content " value= " <%= content%> " cols= " <%= new Long(65)%> " rows= " <%= new Long(8)%> " fieldLength= " <%=new Integer(400)%> "/> &nbsp;
</td>
</tr>
<tr>
<td>
<nmttag:label id= "BAS_BJDYJ.lbl_email_title " value= "QU_BJDSDEM.Annex " />
</td>
<td>

<nmttag:label id= "BAS_BJDYJ.lbl_email_title " value= " <%= resultshowreportname.toString()%> " />

</td>
</tr>

<tr>
<td>

</td>
<td>
<script type= "text/javascript "> Attachment(10); </script>
</td>
</tr>
</table>
</div>
<div align= "center ">
<input type= "submit " name= "Submit " value= " <%=MLUtils.getResourceString( "QU_BJDSDEM.lblSend ")%> ">