The data from the request's body, on POST requests. It parses application/x-www-form-urlencoded data (used by most web requests, including typical forms), and multipart/form-data requests (used by file uploads on web forms) into the same container, so you can always access them the same way. It makes no attempt to parse other content types. If you want to accept an XML Post body (for a web api perhaps), you'll need to handle the raw data yourself.
The data from the request's body, on POST requests. It parses application/x-www-form-urlencoded data (used by most web requests, including typical forms), and multipart/form-data requests (used by file uploads on web forms) into the same container, so you can always access them the same way. It makes no attempt to parse other content types. If you want to accept an XML Post body (for a web api perhaps), you'll need to handle the raw data yourself.