Javaweb基础-- 6图解http笔记（http请求首部字段）
1.Accept
2.Accept-Charset
3.Accept-Encoding
4.Accept-Language
5.Authroization
6.Expect
7.Form
8.Host
9.If-Match
注： precondition 先决条件,前提,前提条件
10.If-Modified-Since
11.If-None-Match
12.If-Range
13.If-Unmodified-Since
14.Max-Forwards
15.Proxy-Authorization
16.Range
17.Referer
18.TE
18.User-Agent