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Servlet Config August 23, 2005

Posted by Coolguy in Servlets/Jsp.
  • When container initializes a servlet it makes a unique ServletConfig for the servlet
  • The container reads the servlet init parameters from the deployment descriptor and gives them to the ServletConfig and then passes ServletConfig to the servlet’s init() method
  • There is one version of init which takes a ServletConfig as a parameter and there is one which doesn’t
  • Developers typically override the no-arg version as the arg version calls the no-arg version !!
  • Once the parameters are in ServletConfig, container never reads the init parameters again till the servlet is redeployed.
  • E.g:
    <description>test parameter
    String name=ServletConfig.getInitParameter(“myname”);
    Enumeration e= getServletConfig().getInitParameterNames();


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