CODEWITHSUNDEEP
javajspsessionjakarta-ee
Saumil
Saumil

Reputation: 2517

How to pass variables from one jsp to other without making them session variable?

I have a website which would be having around 15 session variables per user. I recently came to read an article which says that "session variables are evil and they affect the performance of the application". I was really disappointed by reading that article as I couldn't find any other way through which I can access the variables on other page.

Consider the below scenario,

I have a forum website in which when a user clicks a particular question, ForumSingleQuesitonController is called which stores the question, its answers, the comments of questions and answers both within the object of ArrayList<ForumSingleQuestionBean> and this object is stored by me in the session.

Now I use resonse.sendRedirect("pages/forum_single_question.jsp"); to goto the forum_single_question.jsp page, from which I access the session variable and prints out it's values. Now my question is how can I perform this procedure i.e. passing a variable from Controller(Servlet) to JSP without using session variable.

Thanks in advance

Upvotes: 1

Views: 1502

Answers (1)

Kevin Bowersox
Kevin Bowersox

Reputation: 94469

I would recommend performing a forward from the servlet. This will pass all of the request parameters to the JSP.

RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/forum_single_question.jsp");
dispatcher.forward(request,response);

If you need to include additional attributes set them prior to the forward using:

request.setAttribute("attributeName", value);

Upvotes: 2

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