URL组成

https://johnny:[email protected]:443/script.ext;param=value?query=value#ref

Component	Value
scheme	https
user	Johnny
password	p4ssw0rd
host	www.example.com
port	443
path	/script.ext
pathExtension	ext
pathComponents	["/", "script.ext"]
parameterString	param=value
query	query=value
fragment	ref