This example shows how to handle Cross-Origin Resource Sharing (CORS) objections to cross-domain Ajax requests.

The front end is at https://acad.kutztown.edu/~spiegel/cis521/ServletHTML/AjaxShowParam/external.html

It uses a filter (WebConfig) to handle the CORS authorization.

For more info: https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS