Redirect pages in JSP

Question

I have to design several pages in jsp  After clicking on the submit button on the first page  the page should be automatically redirected to the second page   Can you help with a quick example or a link to a tutorial that demonstrates how to implement this

User · Answer

lt       String redirectURL    http   whatever com myJSPFile jsp       response sendRedirect redirectURL     gt

User · Answer

Extending  oopbase s answer with return  statement   Let s consider a use case of traditional authentication system where we store login information into the session  On each page we check for active session like      Some Import Statements here      if null    session     session getAttribute  is login   equals  1          response sendRedirect  http   domain com login                session getAttribute  user id                Some More JSP Java HTML code here      It looks fine at first glance however  It has one issue  If your server has expired session due to time limit and user is trying to access the page he might get error if you have not written your code in try  catch block or handled if null    session getAttribute  attr name    everytime   So by putting a return  statement I stopped further execution and forced to redirect page to certain location   if null    session     session getAttribute  is login   equals  1          response sendRedirect  http   domain com login        return      Note that Use of redirection may vary based on the requirements  Nowadays people don t use such authentication system   Modern approach - Token Based Authentication  It s just an simple example to understand where and how to place redirection s

User · Answer

Hello there  If you need more control on where the link should redirect to  you could use this solution    Ie  If the user is clicking in the CHECKOUT link  but you want to send him her to checkout page if its registered logged in  or registration page if he she isn t   You could use JSTL core LIKE    lt  --include the library-- gt   lt    taglib prefix  core  uri  http   java sun com jsp jstl core    gt    lt  --create a var to store link--  gt   lt core set var  linkToRedirect  gt     lt  --test the condition you need--  gt     lt core choose gt       lt core when test    USER IS REGISTER   gt        checkout jsp      lt  core when gt       lt core otherwise gt        registration jsp      lt  core otherwise gt     lt  core choose gt   lt  core set gt    EXPLAINING  is the same as        pseudo code  if condition    true     set linkToRedirect   checkout jsp  else    set linkToRedirect   registration jsp   THEN  in simple HTML      lt a href  your domain com   linkToRedirect   gt CHECKOUT lt  a gt

User · Answer

This answer also contains a standard solution using only the jstl redirect tag    lt c redirect url   home html   gt

User · Answer

Just define the target page in the action attribute of the  lt form gt  containing the submit button   So  in page1 jsp    lt form action  page2 jsp  gt       lt input type  submit  gt   lt  form gt      Unrelated to the problem  a JSP is not the best place to do business stuff  if you need to do any  Consider learning servlets

[java] Redirect pages in JSP?

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