using redirection from servlet

Question

i am using a servlet to bring in a login page for my web application.but once i login and click on "submit" button,i should be redirected to another page. how do i do this? i am currently trying to use

RequestDispatcher rd = null;
rd = getServletContext().getRequestDispatcher("/NextServlet");
rd.forward(request, response);

Also tried using

response.sendRedirect("http://localhost:8080/myProject/NextServlet");

but nothing happens on click of submit, I do not want to include a link with href and use. What should I do?

Are you trying to see a java server page or the content of a servlet? If you want to access to this NextServlet, at least make sure this servlet prints any HTML code or forward/redirects to a JSP. — Luiggi Mendoza
– Luiggi Mendoza, Commented Nov 29, 2012 at 5:31
yes i have included a simple hhtml code in my NextServlet and i have in mentioned the following in my web.xml <servlet> <servlet-name>RequestParamExample</servlet-name> <servlet-class>com.xyz.RequestParamExample</servlet-class> </servlet> <servlet-mapping> <servlet-name>RequestParamExample</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> — blackhole
– blackhole, Commented Nov 29, 2012 at 10:37
RequestParamExample is the servlet where i have included dispatcher as said in the first post — blackhole
– blackhole, Commented Nov 29, 2012 at 10:38

Jayant Varshney · Accepted Answer · 2012-11-29 06:23:36Z

1

try this

response.sendRedirect("NextServlet");

edited Nov 29, 2012 at 6:23

answered Nov 29, 2012 at 5:14

Jayant Varshney

1,8351 gold badge28 silver badges42 bronze badges

Sign up to request clarification or add additional context in comments.

32 Comments

Jayant Varshney Over a year ago

path itself contains context path, i have only given an alternative to request dispatcher

Luiggi Mendoza Over a year ago

Not necessarily, and you even need to use Response#encodeRedirectURL as shown here: Servlet: URL redirect.

Jayant Varshney Over a year ago

it is required when you need to encode your url, otherwise you can directly send to that url

Jayant Varshney Over a year ago

let us taken an example of any url... response.sendRedirect("google.com"); ... try it

Luiggi Mendoza Over a year ago

Ok, what about path = "somePage.jsp";?

|

Yogendra Singh · Accepted Answer · 2012-11-29 05:10:38Z

0

I think you need to add contextPath in your redirect URL as :

  String destinationURL = request.getContextPath()+"/NextServlet";
  RequestDispatcher rd = getServletContext().getRequestDispatcher(destinationURL);
  rd.forward(request, response);

answered Nov 29, 2012 at 5:10

Yogendra Singh

34.5k7 gold badges66 silver badges73 bronze badges

6 Comments

Yogendra Singh Over a year ago

@blackhole When you say "not working", what is happening? Are you getting some message/error? Also did you make sure, its reaching up to this code as I suspect the problem is somewhere else?

blackhole Over a year ago

i am not redirected to the page, instead it stays in the same page,but the username and password fields reset. i dont have any errors also.i tried increasing my log4j error logging, but not able to trace

Yogendra Singh Over a year ago

I suspect, its not reaching up to there. Can you share little more of your code?

blackhole Over a year ago

i am now getting an error as below: Exception in thread "http-bio-8080-exec-4" java.lang.StackOverflowError at org.apache.catalina.core.ApplicationHttpRequest.getAttribute(ApplicationHttpRequest.java:219) at org.apache.catalina.core.ApplicationHttpRequest.getAttribute(ApplicationHttpRequest.java:228) at org.apache.catalina.core.ApplicationHttpRequest.getAttribute(ApplicationHttpRequest.java:228) at org.apache.catalina.core.ApplicationHttpRequest.getAttribute(ApplicationHttpRequest.java:228) at org.apache.catalina.core.ApplicationHttpRequest.getAttribute(ApplicationHttpRequest.java:228)

Yogendra Singh Over a year ago

@blackhole Can you look litte down in the stack trace and see which line of your code(it will have name of one of your classes) is cause this over flow error?

|

Sifeng · Accepted Answer · 2012-11-29 07:23:50Z

0

Have you set the "action" of your form in html?

<form action="your_jsp_script.jsp" method="post">

answered Nov 29, 2012 at 7:23

Sifeng

7199 silver badges25 bronze badges

3 Comments

blackhole Over a year ago

yes @sifeng, i have mentioned the action,but i have linked it to call a html page and not a jsp page!am i wrong there?

Sifeng Over a year ago

the script in "<form action=...>" will be executed when you click the submit button. If it is just a html page, nothing will happen.

blackhole Over a year ago

hi,once i have changed to <form action="WelcomePage.jsp" method=POST>, i am redirected to some page but, its empty and only the out.prinltn() statements are visible...my jsp file is as below : <%@ page info="request param example" %> <html> <head><title>iPTS</title></head> <body bgcolor="#ffffff" background="background.gif"> <%@ include file="WelcomePage.html" %> <table> <tr> <td width=150>   </td> <td width=250 align=right> <h1>Welcome to iPTS!</h1> </td> </tr> </table> </body> </html> again,where am i wrong?

Collectives™ on Stack Overflow

using redirection from servlet

3 Answers 3

32 Comments

6 Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

32 Comments

6 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related