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vijaymanoharan
Level 2
January 6, 2022

Calling Servlet through dispatcher loses Body payload data

  • January 6, 2022
  • 2 replies
  • 3628 views

I'm calling a servlet through POST method and passing data. When i tried to hit the author/publish instance directly, its working as expected.

Whereas when I'm hitting the servlet through dispatcher, the request payload data is coming as EMPTY.

 

Please share your inputs on the same

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2 replies

milind_bachani
Adobe Employee
milind_bachaniAdobe Employee
Adobe Employee
January 6, 2022

Hi @vijaymanoharan 

Are you sure that the payload is empty and you are not getting a 404.
You get a 404 on dispatcher if servlet path is not allowed in the PUBLISH-FILTERS.

Can you please analyse the requests in network tab of dev-tools and post relevant screeenshots, so that we can guide further.

Thanks.

    V
    vijaymanoharanAuthor
    Level 2
    January 7, 2022

    Hi @milind_bachani , the payload is coming as empty whereas the payload is a JSON which i'm passing.

     

    Note: Im trying to hit the servlet through external server. 

      V
      vijaymanoharanAuthor
      Level 2
      January 7, 2022

      hi @vijaymanoharan 

      I would further like you to check that your servlet code has been deployed to publisher and you are able to resolve the servlet at :
      <publisher_url>/system/console/servletresolver 
      add path /bin/notification choose method as POST and click on resolve and check what candidates say.

      Also, I presume that you have added /bin path to execution paths in Apache Sling Servlet/Script Resolver and Error Handler config (in /system/console/configMgr)


      The servlet path is resolving in servletresolver and /bin path is available under that particular config.

        Shubham_borole
        Community Advisor
        Shubham_boroleCommunity Advisor
        Community Advisor
        January 7, 2022

        Hi @vijaymanoharan 

         

        What does the servlet url look like?

        Can you please check the dispatcher any file for '/filter' section 

        For Eg: For /bin/test/myservlet
/0001 { /type "allow" /url "/bin/test/myservlet*" }

        Also we can check the dispatcher debug and trace logs if any information regarding this is noted.

         

        Thanks

         

          V
          vijaymanoharanAuthor
          Level 2
          January 7, 2022

          Hi @shubham_borole ,

           

          The dispatcher filter file allows the particular path.

           

          The dispatcher.log shows the trace as follow

           

          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] Found farm publishfarm for project.dev
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] checking [/bin/notification]
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] request URL has no extension: /bin/notification
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] cache-action for [/bin/notification]: NONE
          [Fri Jan 07 08:25:11 2022] [T] [pid 6550] Filter rule entry /005 allowed 'POST /bin/notification HTTP/1.1'
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] Reusing connection: 10.44.1.98:4503
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] Connected to backend 0 (10.44.1.98:4503)
          [Fri Jan 07 08:25:11 2022] [T] [pid 6550] request.uri = "/bin/notification"
          [Fri Jan 07 08:25:11 2022] [T] [pid 6550] request.headers[Content-Type] = "application/json; charset=utf-8"
          [Fri Jan 07 08:25:11 2022] [T] [pid 6550] request.headers[Via] = "1.1 project.dev (dispatcher)"
          [Fri Jan 07 08:25:11 2022] [T] [pid 6550] request.headers[X-Forwarded-For] = "10.44.1.98"
          [Fri Jan 07 08:25:11 2022] [T] [pid 6550] request.headers[Server-Agent] = "Communique-Dispatcher"
          [Fri Jan 07 08:25:11 2022] [T] [pid 6550] request.headers[Host] = "10.44.1.98:4503"
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] Sending request body to remote server
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] Request body sent to remote server
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] No socket reuse: neither GET nor HEAD
          [Fri Jan 07 08:25:11 2022] [I] [pid 6550] "POST /bin/notification" 500 none [publishfarm/0] 8ms
          [Fri Jan 07 08:25:11 2022] [D] [pid 6550] Found farm publishfarm for project.dev

           

          Note: I'm trying to hit the servlet from external server

            Shubham_borole
            Community Advisor
            Shubham_boroleCommunity Advisor
            Community Advisor
            January 8, 2022

            Do you have any other servlets that use the /bin based servlet resolutions and are working?

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