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struts 2中的chain
阅读量:142 次
发布时间:2019-02-26

本文共 424 字,大约阅读时间需要 1 分钟。

Struts2 的一个显著特点就是其强大的拦截器机制,尤其是拦截链的概念,值得深入探讨。以下将结合实际项目中的场景,提供一些感性的认识。

在电商平台中,购物车功能是一个典型的用户交互场景。假设用户希望删除购物车中的商品,删除后系统仍然会继续显示购物车,只是里面的商品数量会减少。要实现这样的功能,可以通过以下方式配置控制器:

在对应的XML配置文件中添加如下配置:

displaycart
error.html

在成功的拦截链中,指定执行displaycart控制器:

ShoppingCart.vm
error.html

此时,displaycart控制器负责刷新显示当前购物车的内容。这一实现方式既保持了用户体验的连贯性,又确保了购物车状态的及时更新。

转载地址:http://doif.baihongyu.com/

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