一种方法是将其显式传递给send操作的URL，例如:

One way is to explicitly pass it to the URL of the send action, for example:

uri = ".../FormData?username={xxf:get-request-header('Orbeon-Username')}"

在Orbeon Forms 4.9中，有一个新的 xxf:username() 功能更直接.

In Orbeon Forms 4.9, there is a new xxf:username() function which is more direct.

在Servlet端，您可以使用以下方法检索URL参数:

On the servlet side, you can retrieve a URL parameter using:

request.getParameter("username")