1.web应用文件结构<webApp>\WEB-INF:包含保存Web应用所需的Java类文件夹：classes,lib配置文件：web.xml\classes\lib\web.xml\*.jsp2.web.xml2.1context-param:Web应用的配置参数<context-param><param-name>...</param-name><param-value>...</param-value></context-param>2.2servlet:配置Servlet(JSP)<servlet><servlet-name>config</servlet-name><!--配置JSP：指定将哪个JSP页面配置成Servlet--><jsp-file>/jspName.jsp</jsp-file><!--配置Servlet：指定将哪个JSP页面配置成Servlet--><servlet-class>ServletClassName</servlet-class><%--Servlet应用启动实例化需配置load-on-startup--%><load-on-startup>dureSeconds</load-on-startup><init-param><param-name>...</param-name><param-value>...</param-value></init-param></servlet><servlet-mapping><!--指定将configServlet配置到/configURL,将允许通过/config访问该页面--><servlet-name>config</servlet-name><url-pattern>/config</url-pattern></servlet-mapping>2.3配置Filter:在web.xml中配置<filter><filter-name>authority</filter-name><filter-class>lee.AuthorityFilter</filter-class><init-param><param-name>encoding</param-name><param-value>GBK</param-value></init-param></filter><!--定义Filter拦截的URL地址--><filter-mapping><filter-name>authority</filter-name><!--Filter负责拦截的URL--><url-pattern>/*</url-pattern></filter-mapping>2.4配置Listener:<!--配置Listener--><listener><!--指定Listener的实现类--><listener-class>lee.GetConnListener</listener-class></listener>2.5配置JSP属性：JSP2支持，使用Servlet2.4以上版本<jsp-config><jsp-property-group><!--对哪些文件应用配置--><url-pattern>/noscript/*</url-pattern><!--忽略表达式语言--><el-ignored>true</el-ignored><>defaultfalse<!--页面编码的字符集--><page-encoding>GBK</page-encoding><!--不允许使用Java脚本--><scripting-invalid>true</scripting-invalid><>defaultfalse<!--隐式导入页面头--><include-prelude>/inc/top.jspf</include-prelude><>可替换include编译指令(静态)<!--隐式导入页面尾--><include-coda>/inc/bottom.jspf</include-coda><>...</jsp-property-group><jsp-property