Images CSS not loaded after the request passes through a Servlet Filter
Hi,
I have a small java application, in which a servlet processes the request
and then
calls a JSP to present the data. Everything is OK with that configuration.
Then, I decided
to create a servlet filter, to redirect every request to that application,
to a login page first.
The code of that filter is the following:
**
public final class ApplicationFilter implements Filter {
private FilterConfig _fc = null;
public void init(FilterConfig filterConfig)
throws ServletException {
this._fc = filterConfig;
}
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException,
ServletException {
try {
RequestDispatcher rd =
_fc.getServletContext().getRequestDispatcher(/login);
rd.forward(request, response);
} catch (Exception e) {
System.out.println(Exception: + e.getMessage());
e.printStackTrace();
}
}
-- (the rest was intentionally omitted) --
***
The redirection works great, BUT all images and CSS referenced in the JSP
file are not
loaded after the request passes through the filter. The application runs
perfectly, and takes
the user to the login screen, and after that, to the application. The
application does some
database queries and returns the data correctly. BUT, everything without
images or the
styles defined in the CSS file.
Just to make a test, I put the CSS file contents directly inside the JSP
file, and it
worked great. In this case, images were not loaded also...
The process flows like this:
Request -- Filter -- login (a servlet) -- login.jsp -- queryDB (a
servlet) -- queryDB.jsp
When I disable the filter, in the web.xml file, everything works as would be
expected.
The configuration in web.xml is OK: all servlets are set, as is the filter
itself.
I'm using Tomcat 5.0.28 on a Gentoo Linux system, with POSIX threads and
kernel
2.6.9. The hardware is a P IV HT 3.2 Ghz.
I also checked the archives of this list, but was unable to find any
reference to a problem
like this one. Does anyone know what is happening ?
Regards,
Roberto
Re: Images CSS not loaded after the request passes through a Servlet Filter
Question: are the requests for images and CSS files also going through the
filter? I'm wondering if those requests are getting forarded to the logon
page too, which obviously wouldn't work.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
On Thu, April 28, 2005 1:25 pm, Roberto said:
Hi,
I have a small java application, in which a servlet processes the request
and then
calls a JSP to present the data. Everything is OK with that configuration.
Then, I decided
to create a servlet filter, to redirect every request to that application,
to a login page first.
The code of that filter is the following:
**
public final class ApplicationFilter implements Filter {
private FilterConfig _fc = null;
public void init(FilterConfig filterConfig)
throws ServletException {
this._fc = filterConfig;
}
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException,
ServletException {
try {
RequestDispatcher rd =
_fc.getServletContext().getRequestDispatcher(/login);
rd.forward(request, response);
} catch (Exception e) {
System.out.println(Exception: + e.getMessage());
e.printStackTrace();
}
}
-- (the rest was intentionally omitted) --
***
The redirection works great, BUT all images and CSS referenced in the JSP
file are not
loaded after the request passes through the filter. The application runs
perfectly, and takes
the user to the login screen, and after that, to the application. The
application does some
database queries and returns the data correctly. BUT, everything without
images or the
styles defined in the CSS file.
Just to make a test, I put the CSS file contents directly inside the JSP
file, and it
worked great. In this case, images were not loaded also...
The process flows like this:
Request -- Filter -- login (a servlet) -- login.jsp -- queryDB (a
servlet) -- queryDB.jsp
When I disable the filter, in the web.xml file, everything works as would
be
expected.
The configuration in web.xml is OK: all servlets are set, as is the filter
itself.
I'm using Tomcat 5.0.28 on a Gentoo Linux system, with POSIX threads and
kernel
2.6.9. The hardware is a P IV HT 3.2 Ghz.
I also checked the archives of this list, but was unable to find any
reference to a problem
like this one. Does anyone know what is happening ?
Regards,
Roberto
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Images CSS not loaded after the request passes through a Servlet Filter
Frank,
You got it. The filter configuration, in the web.xml file, was
intercepting ALL requests (url-pattern/*/url-pattern). I really
thought that the filter would intercept only requests for Servlets,
not all HTTP requests...
Thanks ! This problem was really pissing me off... :)
Regards
Roberto
On 4/28/05, Frank W. Zammetti [EMAIL PROTECTED] wrote:
Question: are the requests for images and CSS files also going through the
filter? I'm wondering if those requests are getting forarded to the logon
page too, which obviously wouldn't work.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
On Thu, April 28, 2005 1:25 pm, Roberto said:
Hi,
I have a small java application, in which a servlet processes the
request
and then
calls a JSP to present the data. Everything is OK with that
configuration.
Then, I decided
to create a servlet filter, to redirect every request to that
application,
to a login page first.
The code of that filter is the following:
**
public final class ApplicationFilter implements Filter {
private FilterConfig _fc = null;
public void init(FilterConfig filterConfig)
throws ServletException {
this._fc = filterConfig;
}
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException,
ServletException {
try {
RequestDispatcher rd =
_fc.getServletContext().getRequestDispatcher(/login);
rd.forward(request, response);
} catch (Exception e) {
System.out.println(Exception: + e.getMessage());
e.printStackTrace();
}
}
-- (the rest was intentionally omitted) --
***
The redirection works great, BUT all images and CSS referenced in the
JSP
file are not
loaded after the request passes through the filter. The application runs
perfectly, and takes
the user to the login screen, and after that, to the application. The
application does some
database queries and returns the data correctly. BUT, everything without
images or the
styles defined in the CSS file.
Just to make a test, I put the CSS file contents directly inside the JSP
file, and it
worked great. In this case, images were not loaded also...
The process flows like this:
Request -- Filter -- login (a servlet) -- login.jsp -- queryDB (a
servlet) -- queryDB.jsp
When I disable the filter, in the web.xml file, everything works as
would
be
expected.
The configuration in web.xml is OK: all servlets are set, as is the
filter
itself.
I'm using Tomcat 5.0.28 on a Gentoo Linux system, with POSIX threads and
kernel
2.6.9. The hardware is a P IV HT 3.2 Ghz.
I also checked the archives of this list, but was unable to find any
reference to a problem
like this one. Does anyone know what is happening ?
Regards,
Roberto
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
