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接上
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HTTP协议就是提前制定好的一种消息模板。通过它能让B和S交流
- 不管你是哪个品牌的浏览器，都是以这种模式发送。
- 不管你是哪个品牌的WEB服务器，都是以这种模式发送。
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HTTP的请求协议（B --> S）
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HTTP的请求协议包括：4部分
- 请求行
- 请求头
- 空白行
- 请求体
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HTTP请求协议的具体报文：GET请求
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GET /servlet05/getServlet?username=lucy&userpwd=1111 HTTP/1.1 请求行 Host: localhost:8080 请求头 Connection: keep-alive sec-ch-ua: "Google Chrome";v="95", "Chromium";v="95", ";Not A Brand";v="99" sec-ch-ua-mobile: ?0 sec-ch-ua-platform: "Windows" Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Sec-Fetch-Site: same-origin Sec-Fetch-Mode: navigate Sec-Fetch-User: ?1 Sec-Fetch-Dest: document Referer: http://localhost:8080/servlet05/index.html Accept-Encoding: gzip, deflate, br Accept-Language: zh-CN,zh;q=0.9 空白行 请求体
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HTTP请求协议的具体报文：POST请求
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POST /servlet05/postServlet HTTP/1.1 请求行
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Host: localhost:8080 请求头
Connection: keep-alive
Content-Length: 25
Cache-Control: max-age=0
sec-ch-ua: "Google Chrome";v="95", "Chromium";v="95", ";Not A Brand";v="99"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
Origin: http://localhost:8080
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://localhost:8080/servlet05/index.html
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9
空白行
username=lisi&userpwd=123 请求体
