Confluence logs excessive warnings regarding form parameters and servlets

Problem Definition

The below exception is thrown in the catalina.out file:

20-Aug-2020 14:31:26.113 WARNUNG https-jsse-nio2-443-exec-1854 url:/rest/talk/1.0/comments/updates username:S1114394 com.sun.jersey.spi.container.servlet.WebComponent.filterFormParameters A servlet request, to the URI https://confluence.dkb.ag/rest/talk/1.0/comments/updates, contains form parameters in the request body but the request body has been consumed by the servlet or a servlet filter accessing the request parameters. Only resource methods using @FormParam will work as expected. Resource methods consuming the request body by other means will not work as expected.

 Note that the URL will vary - this is but one example.

These warning messages should not interfere with the functionality of the application.

Workaround

The message can be suppressed from the logs with the following steps

1. Edit <confluence-install>/conf/logging.properties
   Note: This is a different file to that found at <confluence-install>/confluence/WEB-INF/classes/logging.properties. Please ensure you edit the correct file.
2. Add the following line

   com.sun.jersey.spi.container.servlet.WebComponent.level = SEVERE
   

3. Restart Confluence