Re: Problem with tomcat 6.0.32

From:

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>

Newsgroups:

comp.lang.java.programmer

Date:

Sat, 08 Sep 2012 22:33:12 -0400

Message-ID:

<504bffef$0$291$14726298@news.sunsite.dk>

On 9/6/2012 12:36 AM, Fredrik Jonson wrote:

In <5f8ee108-bcec-4f96-ac86-d49e548b204a@googlegroups.com> ruds wrote:

  I'm am deploying an application having JSP's and few servlets. My servlet is
  not getting invoked after calling from JSP. My web.xml entry is:

  <servlet-mapping>
      <servlet-name>login</servlet-name>
      <url-pattern>/CheckLogin/* </url-pattern>
  </servlet-mapping>

  I'm calling this from a JSP form element:
<FORM name="f1" ACTION="/CheckLogin" METHOD=POST onsubmit='return checkall()'>

You need to prepend the servlet context path to the form action url.

Or drop thw / entirely.

In html, when you specify a relative url that starts with a / it is
interpered as being relative to the server root. So /foo is interpreted
as http://example.com/foo. The servlet mapping in web.xml does normally
not start from the server root, but from the servlet context path.

That is almost certainly the problem.

But may I use the opportunity to mention that it should not be:

action="CheckLogin"

but:

action="<%=response.encodeURL("CheckLogin")%>"

to work with cookies disabled.

Something that is often forgotten today.

An even better solution would probably be to use a taglib that
handles all that stuff for one, but then we are somewhat changing
topic.

Arne