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第一节课：浅谈http
嘉成
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谈谈对http协议的理解

  • 1:http协议的理解
    http是用于前后端通信的一种常用协议，除此之外还有https协议，由于http协议比较容易被拦截，所以近些年来很多公司也开始使用了https协议，更安全一点，使用了ssl进行隧道加密，http是一种无状态的协议，是不会知道跟谁通话过，所以也会借助与cookie进行保持会话，返回的编码也是约定俗成的，好比200代表请求成功，404代表找不到该资源文件，302资源被重定向，50X代表服务器异常，请求类型也分好多种，还比：GET/POST/PUT/DELETE…

  • 2:请求响应的过程理解
    请求就是客户端会发送一个请求给后端，后端接收到该请求时会进行寻找对应的资源文件进行返回，响应的只能是字符串

Correcting teacher：PHPzPHPz

Correction status：qualified

Teacher's comments：配上图例会更加完美
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