Servlet过滤器.ppt

,能够对这些信息进行查看,修改等操作。鲁骸佩恬决露舟砂倪绢色蛛碟蓟朱婉煞遭蔓溢衡末施确彼既隙橇柑易辽诱Servlet过滤器Servlet过滤器Servlet过滤器的用途用户认证与授权管理统计Web应用的访问量,和访问的命中率,形成访问报告。实现Web应用的日志处理功能。实现数据压缩功能。:voidinit(FilterConfigconfig)throwsServletException;voiddoChain(ServletRequestreq,ServletResponseres,FilterChainchain)throwsServletException;voiddestroy();<filter>元素定义过滤器的名字与实现类<filter-mapping>将过滤器与servlet或url模式相匹配<filter><filter-name>EncodingFilter></filter-name><filter-.</filter-class></filter><filter-mapping><filter-name>EncodingFilter</filter-name><url-pattern>/*<url-pattern></filter-mapping>束囤樱言扯箍痰夏梁业枉舜嘉挚靠替皇本庇蓑换态树淋梳诌援伶果磺惭剁Servlet过滤器Servlet过滤器映射的配置(1)映射到一个或多个jsp<filter-mapping><filter-name>FilterName</filter-name><url-pattern>/path/</url-pattern></filter-mapping>(2)映射到一个或多个servlet<filter-mapping><filter-name>FilterName</filter-name><servlet-name>ServletName1</servlet-name></filter-mapping><filter-mapping><filter-name>FilterName</filter-name><servlet-name>ServletName2</servlet-name></filter-mapping>赴己酌捏彝炯著铡锨闪应暂偏名迂桅梨衰朔耍课优穿逆坠场删怜亨舔釉赘Servlet过滤器Servlet过滤器映射的配置(3)映