调用过滤器的顺序是什么?
问题描述:
假设我在我的web.xml中有以下内容
Suppose i have following in my web.xml
<filter-mapping>
<filter-name>F1</filter-name>
<url-pattern>/XYZ/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>F2</filter-name>
<url-pattern>/XYZ/abc.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>F3</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
如果请求是/ XYZ / abc,将调用过滤器的顺序是什么.do.And为什么?
What will be the order in which the filters will be called if a request comes as /XYZ/abc.do.And why?
答
按顺序在web.xml中定义它们的映射
In the order their mappings are defined in web.xml
如果使用注释( @WebFilter
),订单似乎未定义 - 您仍然需要声明< filter-mapping>
web.xml中的条目。
If using annotations (@WebFilter
) the order seems to be undefined - you still have to declare the <filter-mapping>
entries in web.xml.