L contains a protocol, server name, port
 number, and server path, but it does not include query string parameters.

 <p>
 If this request has been forwarded using <a href="../../../jakarta/servlet/RequestDispatcher.html#forward-jakarta.servlet.ServletRequest-jakarta.servlet.ServletResponse-"><code>RequestDispatcher.forward(jakarta.servlet.ServletRequest, jakarta.servlet.ServletResponse)</code></a>, the server path in the
 reconstructed URL must reflect the path used to obtain the RequestDispatcher, and not