You can check and modify servletRequest and servletResponse objects. You can specify that the servlet filter is associated with a specific url, which only triggers the filter when the client accesses the url. Servlet filters can be concatenated together to form pipeline benefits, together with modification of requests and response objects.

Packet : 51622416servletglq.rar filelist
过滤器\Servlet过滤器.ppt
过滤器\TestFilter.java
过滤器

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