Response Redirection

• Response code 302: Resource Temporarily Moved
  • Informs client the requested resource is not at the requested URL.
  • Actual URL is given in the response header.
  • Most browsers follow the new link without informing user.
• Another use of 302 besides intended purpose: link tracking, or keeping track of where visitors are going from your site.
  • Do not directly encode links from your site.
  • Instead, encode links to go to your Servlet where they are logged.
  • Then send response 302 back to requestor with a real link to the site.
  • Technique used so often a convenience method sendRedirect() is included in HttpServletResponse.