I am using Spark Java for writing the REST API servies. Spark is a neat web microframework which kinda reminds me of good-old Python Flask. Problem Some of my HTTP requests I have to send are humongous. Sometimes in megabytes. The underlying Jetty server was throwing "Form too large" exception because, POST requests’ body size exceeds what is supported. The default maximum POST request size is 2 MiB. Now, Spark does not offer any direct ways to configure the settings of the underlying Jetty server.