web.xml常用配置

servlet配置：

<servlet>    <servlet-name>test</servlet-name>    <servlet-class>TestServlet</servlet-class>    <init-param>        <param-name>email</param-name>        <param-value>1@163.com</param-value>    </init-param></servlet><servlet-mapping>    <servlet-name>test</servlet-name>    <url-pattern>/test.do</url-pattern></servlet-mapping>

filter配置：

<filter>      <filter-name>Filter</filter-name>       <filter-class>FilterClass</filter-class>     <init-param>          <param-name>size</param-name>           <param-value>20</param-value>    </init-param></filter><filter-mapping>    <filter-name>Filter</filter-name>       <url-pattern>/comment</url-pattern>   </filter-mapping>

上下文初始化参数配置：

<context-param>    <param-name>email</param-name>    <param-value>1@163.com</param-value></context-param>

listener配置：

<listener>    <listener-class>        com.demo.MyListener    </listener-class></listener>

session配置：

<session-config>    <session-timeout>15</session-timeout></session-config>

为jsp配置初始化参数：

<servlet>    <servlet-name>test</servlet-name>    <jsp-file>/test.jsp</jsp-file>    <init-param>        <param-name>email</param-name>        <param-value>1@163.com</param-value>    </init-param></servlet><servlet-mapping>    <servlet-name>test</servlet-name>    <url-pattern>/test.jsp</url-pattern></servlet-mapping>

jsp属性配置：

<jsp-config>    <jsp-property-group>        <url-pattern>*.jsp</url-pattern>        <scripting-invalid>true</scripting-invalid>        <el-ignored>true</el-ignored>    </jsp-property-group></jsp-config>

配置欢迎页面：

<welcome-file-list>    <welcome-file>index.html</welcome-file>    <welcom-file>default.jsp</welcome-file></welcome-file-list>