Get the tag value from one JSP to another JSP during file uploading time

Question

My project concept is to upload file to data base. The below code is working fine but the problem is I can't get the <select> value from one page to another it always show null value.

How to get the <select> element value from one JSP to another JSP during file uploading time?

  <FORM ENCTYPE="multipart/form-data" ACTION="upload_page.jsp" METHOD=POST>
       <center>
       <table border="0" bgcolor=#ccFDDEE>
       <tr><center><td colspan="2" align="center"><B>UPLOAD THE FILE</B>
      <center></td></tr>
       <tr><td colspan="2" align="center"> </td></tr>
       <tr><td><b>Choose the file To Upload:</b></td><td><INPUT NAME="file" TYPE="file"> </td></tr>
       <tr><td colspan="2" align="center"> </td></tr>
       <tr><td colspan="2" align="center"><input type="submit" value="Send File">            </td></tr>
       <tr>
       <td>
       <select name="t1">
      <option value="mars">Mars</option>
      <option value="moon">Moon</option>
      <option value="sun">Sun</option>
      <option value="earth">Earth</option>
      </select>
      </td>

******** 
<% String s1=request.getParameter("t1"); System.out.println(s1); 
********

<% String s1=request.getParameter("t1"); System.out.println(s1);%> — Giri, Feb 22 '13 at 14:23
Please learn how to use code formatting (and the shift key). — Andrew Thompson, Feb 22 '13 at 14:26
guys i can't post full code,so i post my code in another site please refer tis site https://www.facebook.com/groups/Javagroup123/ — Giri, Feb 22 '13 at 14:30

score 2 · Answer 1 · edited Jun 20 '20 at 09:12

You're submitting the form in multipart/form-data encoding. This is different from default application/x-www-form-urlencoded encoding which getParameterXxx() methods by default use. They would all return null on multipart/form-data because multipart/form-data is by default not supported.

Basically, you need to use the very same API to extract the regular form fields as you're currently using to extract the uploaded file. Usually this is Apache Commons FileUpload, so I'm assuming that you're also using that. You should have somewhere an if (!fileItem.isFormField()) check to grab the file field. You need to hook on the else to grab the normal form field.

Alternatively, if you're already on Servlet 3.0, submit the form to a normal servlet with the @MultipartConfig annotation and use getPart() method to get the file field and you can continue using getParameterXxx() methods to get the normal form field.

Get the tag value from one JSP to another JSP during file uploading time

1 Answers1

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