java - How to prevent the result of Servlets from being cached?

Question

How can I stop caching of pages in browser using Servlets?

I want that session should expire if I press back button of browser when i am logged in.

Answer 1

To permanently disable cache.

  // Set to expire far in the past.
  response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");

  // Set standard HTTP/1.1 no-cache headers.
  response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");

  // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
  response.addHeader("Cache-Control", "post-check=0, pre-check=0");

  // Set standard HTTP/1.0 no-cache header.
  response.setHeader("Pragma", "no-cache");

Clearing the client cache would not expire session immediately,but clears session cookies in the browser. To make the session expire immediately, you need to explicitly specify in server side jsp or servlet.

// use session invalidate
session.invalidate();