How to pass button value from jsp to servlet

[vini chauhan]

hi,

I am passing values from jsp to servlet by using this method :


in jsp :

<form action="UploadServlet" method="post"
enctype="multipart/form-data">
<input type="file" name="file" size="50" />

<input type="submit" name="bt" value="gi" />


</form>

In Servlet :

String bt = request.getParameter("bt");
out.print("button value" +bt);

But when the servlet runs i get value of bt as null. Please help.

[Christophe Verré]

The buttons value is not submitted in the request. Why do you want to get it ?

(Please UseCodeTags the next time you want to post some code)

[K West]

The request.getParameter() method doesn't work with enctype="multipart/form-data"
It requires help of upload library to do this. You may refer to this link for more details.

[Vt Guru]

You are wrong...
request.getParameter() will work for the case enctype="multipart/form-data" and this is required while uploading file.
info: w3schools(dot)com/TAGS/tag_form.asp

K West wrote:The request.getParameter() method doesn't work with enctype="multipart/form-data"
It requires help of upload library to do this. You may refer to this link for more details.

[Bear Bibeault]

Vinoth Thirunavukarasu wrote:You are wrong...
request.getParameter() will work for the case enctype="multipart/form-data" and this is required while uploading file.

No, you are wrong. In Servlets 2.x, getParameter() will not work with multi-part forms.