HTTP Network Request Basics

Http://tuijian.hao123.com:80/index.html
Scheme (protocol prefix): host (host):p ORT (port):p Ath (resource path)

Core class:
URL: Network Statistics resource Locator, identity is the only resource in the network
HttpURLConnection network resource Connection class, can open network connection, read network resources, upload network resources, etc.
Function method: getInputStream () to get the network resource byte read stream
Getcontentlength () to get the number of bytes of network resources
Getpesponsecode () to obtain a response code for a network resource, if 200, indicates a successful resource request.

HTTP Network Request Basics