Q:

Can Apache Tomcat handle HTTP POST requests > 2 GB?

I could not find any positive or negative answer to this question in the official Tomcat documentation.

A:

Yes
From the Tomcat Configuration Reference that you surely already read :

maxPostSize
  The maximum size in bytes of the POST which will be handled by the container FORM URL parameter parsing. The limit can be disabled by setting this attribute to a value less than or equal to 0. If not specified, this attribute is set to 2097152 (2 megabytes).

It does mean that you can specify a limit for your application, and that limit can be unlimited. In theory, tomcat does not have a limit as long as you have the necessary hardware.

