Endless forward calls problem

Question

Hi,
          I am using WLS6.1 SP2 + Apache.
          I'm getting in a servlet a request that the sessionid is in the parameter.
          /servlet/Foo?sessionid=1234&param=abc
          The Foo servlet is checking in the beginning of its service() if the
          seesionid paramater exists. If it exists, it forwards
          the request to the same servlet, where the sessionid is encoded in the url.
          /servlet/Foo;sessionid=1234?param=abc
          The result I got is endless request calls until the server dies.
          It seems to me that the sessionid parameter is found in the forward requests
          even though the url I used for the forward call does not.
          This feature work fine on Tomcat and iPlanet... I have the problem only on
          WLS.
          Does anyone know why I got this behavior and how to prevent it ?
          Thanks,
          Eyal.
          

Answer 1

i dont think you can modify the request parameter string when you do a
          forward
          So even though you think you are changing the request, the servlet still
          sees the original request and hence the endless loop? Perhaps you could
          output the query string in the service method or something?
          If you want to change the query string then i think you may need to use
          sendRedirect()
          I cant quite remember but you may be able to get the desired results by
          using a filter. You may be able to modify the query string before the
          servlet sees it if you do it in a filter? Not sure.
          "Eyal H" <[email protected]> wrote in message
          news:[email protected]...
          > Hi,
          >
          > I am using WLS6.1 SP2 + Apache.
          >
          > I'm getting in a servlet a request that the sessionid is in the parameter.
          >
          > /servlet/Foo?sessionid=1234&param=abc
          >
          > The Foo servlet is checking in the beginning of its service() if the
          > seesionid paramater exists. If it exists, it forwards
          > the request to the same servlet, where the sessionid is encoded in the
          url.
          >
          > /servlet/Foo;sessionid=1234?param=abc
          >
          > The result I got is endless request calls until the server dies.
          > It seems to me that the sessionid parameter is found in the forward
          requests
          > even though the url I used for the forward call does not.
          >
          > This feature work fine on Tomcat and iPlanet... I have the problem only on
          > WLS.
          >
          > Does anyone know why I got this behavior and how to prevent it ?
          >
          > Thanks,
          > Eyal.
          >
          >
          >