拦请求
拦转发
拦包含
拦错误
<dispatcher>REQUEST</dispatcher>默认的!
<dispatcher>FORWARD</dispatcher> <dispatcher>INCLUDE</dispatcher> <dispatcher>ERROR</dispatcher>在<filter-mapping>中进行配置!
-------------------------------
多个过滤器的执行顺序
<filter-mapping>的配置顺序决定了过滤器的执行顺序!