What is the need of Servlet filters?


Posted On: Feb 22, 2018


Servlet filters are pluggable java components that are used to process requests before the requests are sent to the servlets and before a container sends the response back to the client.

Some tasks performed with filters are:

  • Logging request parameters to log files.
  • Authorization of request for services
  • The arrangement of request body and header before sending it to a servlet.
  • Condense the response data sent to client
  • Add cookies, header information etc. In response.

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