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OnlineWebSessionManager重写的setAttribute方法起到了什么作用？ #243

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FubinSama opened this issue Jun 6, 2024 · 0 comments
Open

OnlineWebSessionManager重写的setAttribute方法起到了什么作用？ #243

FubinSama opened this issue Jun 6, 2024 · 0 comments

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@FubinSama
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我想知道OnlineWebSessionManager重写的setAttribute方法起到了什么作用？

image image

getOnlineSession的逻辑是：

  1. 从sessionDao中读取session对象s0
  2. 创建一个新的OnlineSession对象s1
  3. 将s0的属性赋值给s1
  4. 返回s1

而setAttribute里只是将这个新创建的s1的attributeChanged属性设置为了true，然后方法就返回了。

看起来对attribute修改的监听没有作用到真实的session对象上，而对一个只被该方法内的局部变量有引用的对象进行了操作。
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@FubinSama