Kwan,
Your string could be all blanks.
try testing like:
String name = request.getParameter ("name");
if ((name == null) || (name.trim()==""))
--amrinder
_____________________________________________
From: Kwan, William [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 28, 2001 2:54 PM
To: [EMAIL PROTECTED]
Subject: checking value of parameter from jsp
Hi all,
I'm passing information from a html page to a servlet.
Here is some code:
String param = request.getParameter("name");
if (param == null) sqlstr = "Select * from name";
else sqlstr ="Select * from name where fname like '"+param + "'";
and
if (param == "") sqlstr = "Select * from name";
else sqlstr ="Select * from name where fname like '"+param + "'";
These both dont detect the blank value when they click submit on the jsp
page. It always goes to the else part.
Am I doing something wrong?? Is there another way to detect if they entered
any data in the field on the form??
thanks,
Will
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff SERVLET-INTEREST".
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff SERVLET-INTEREST".
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
