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Cookie 和 Session 的诞生主要为了解决因为 http 是无状态的,导致同一站点下不能共享状态(例如登录状态)的问题。
当客户端发起http请求到服务端时,服务端接受到请求后会生成一个 Session 临时文件到服务端的内存中,并且会通过哈希函数生成一个唯一标识与之对应,就是 sessionId,然后发起一个http响应到客户端,并且会在响应头的Set-Cookie 携带这个唯一标识 sessionId ,客户端接收到响应头中 Set-Cookie 后会自动保存为 Cookie,待下次客户端发起请求时会在请求头中携带 Cookie 发送给服务端,服务端接收到请求后就会解析 Cookie,校验信息的 sessionId 准确性以及时效性后给客户端响应处理后的数据。
Session
sessionId
Set-Cookie
Cookie
Cookie和Session的区别主要在于:
The text was updated successfully, but these errors were encountered:
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Cookie 和 Session 的诞生主要为了解决因为 http 是无状态的,导致同一站点下不能共享状态(例如登录状态)的问题。
当客户端发起http请求到服务端时,服务端接受到请求后会生成一个
Session
临时文件到服务端的内存中,并且会通过哈希函数生成一个唯一标识与之对应,就是sessionId
,然后发起一个http响应到客户端,并且会在响应头的Set-Cookie
携带这个唯一标识sessionId
,客户端接收到响应头中Set-Cookie
后会自动保存为Cookie
,待下次客户端发起请求时会在请求头中携带Cookie
发送给服务端,服务端接收到请求后就会解析Cookie
,校验信息的sessionId
准确性以及时效性后给客户端响应处理后的数据。Cookie和Session的区别主要在于:
The text was updated successfully, but these errors were encountered: