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Jsp 自定义tag编程不错的文章I think the essence of wisdom is emancipation, as fat as possible, from the tyranny of the here and now. We cannot help the egoism of our senses. Sight and sound and touch are bound up with our own bodies and cannot be impersonal. Our emotions start similarly from ourselves. An infant feels hunger or discomfort, and is unaffected except by his own physical condition. Gradually with the years, his horizon widens, and, in proportion as his thoughts and feelings become le

mvc模式：view接收用户输入，把命令传到controllercontroller处理命令，更新modelmodel被更新后，会通知view需要updateview更新后向用户显示mvc2模式：由于mvc1中，model可以通知view，然后view就可以被更新，这在windows程序中很常见，像MFC的frame-document-view架构，如果document改变了，他会主动通知view进行update但是在web中，作为model的java bean更新后，无法调用作为view的jsp（而且view通常很多，需要选一个），因此改为mvc2模式：view接收用户输入，把命令传到controllercontroller处理命令，更新modelmodel被更新后，control