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Servlet 3.0 允许对 servlet、过滤器和侦听器进行编程配置。但是错误页面呢?
我看不出有什么方法可以做到这一点ServletContext。
ServletContext
能够完全废除web.xml.
web.xml
没有任何技术方法可以以编程方式添加这样的定义。