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删除多了的“的” #1788

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Merged
Snailclimb merged 2 commits into from
Aug 12, 2022
Merged

删除多了的“的” #1788

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15b241c
多了一个“的”，不好意思，自己强迫症。
ZapBird Aug 8, 2022
9d2ac59
Merge branch 'Snailclimb:main' into main
ZapBird Aug 8, 2022
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2 changes: 1 addition & 1 deletion docs/system-design/J2EE基础知识.md
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Expand Up @@ -280,7 +280,7 @@ if(cookies !=null){


在所有会话跟踪技术中，HttpSession对象是最强大也是功能最多的。当一个用户第一次访问某个网站时会自动创建 HttpSession，每个用户可以访问他自己的HttpSession。可以通过HttpServletRequest对象的getSession方 法获得HttpSession，通过HttpSession的setAttribute方法可以将一个值放在HttpSession中，通过调用 HttpSession对象的getAttribute方法，同时传入属性名就可以获取保存在HttpSession中的对象。与上面三种方式不同的 是，HttpSession放在服务器的内存中，因此不要将过大的对象放在里面，即使目前的Servlet容器可以在内存将满时将HttpSession 中的对象移到其他存储设备中，但是这样势必影响性能。添加到HttpSession中的值可以是任意Java对象，这个对象最好实现了 Serializable接口，这样Servlet容器在必要的时候可以将其序列化到文件中，否则在序列化时就会出现异常。
## Cookie和Session的的区别
## Cookie和Session的区别

Cookie 和 Session都是用来跟踪浏览器用户身份的会话方式，但是两者的应用场景不太一样。

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