multipart form data

[Henry]

In a FORM data that uses POST method, I need to upload a file
as well as other string data.

according to oreily, forms should be ENCTYPE="multipart/form-data",
however, when this thing is added, all the inputs in the form
can not be reached by
request.getParameter(...)

how can i fix it?


below is the html:

<FORM ENCTYPE="multipart/form-data"
 method="POST" action="manager">
<INPUT TYPE="text" NAME="sid">
...

below is the servlet:
 public void service(HttpServletRequest request,HttpServletResponse
response)
        throws ServletException, IOException
    {
        Enumeration paramNames = request.getParameterNames();
        while(paramNames.hasMoreElements()) {
            String paramName = (String)paramNames.nextElement();