Tomcat Web.xml写法

tomcat的说明文档中给出的web.xml写法示例

  <?xml version="1.0" encoding="ISO-8859-1" ?>

- <!--

  Licensed to the Apache Software Foundation (ASF) under one or more  contributor license agreements.  See the NOTICE file distributed with  this work for additional information regarding copyright ownership.  The ASF licenses this file to You under the Apache License, Version 2.0  (the "License"); you may not use this file except in compliance with  the License.  You may obtain a copy of the License at      http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software  distributed under the License is distributed on an "AS IS" BASIS,  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the specific language governing permissions and  limitations under the License.

  -->

  <!DOCTYPE web-app (View Source for full doctype...)>

- <web-app>

- <!--

 General description of your web application 

  -->

  <display-name>My Web Application</display-name>

  <description>This is version X.X of an application to perform a wild and wonderful task, based on servlets and JSP pages. It was written by Dave Developer ([e-mail]), who should be contacted for more information.</description>

- <!--

 Context initialization parameters that define shared         String constants used within your application, which         can be customized by the system administrator who is         installing your application.  The values actually         assigned to these parameters can be retrieved in a         servlet or JSP page by calling:             String value =               getServletContext().getInitParameter("name");         where "name" matches the <param-name> element of         one of these initialization parameters.         You can define any number of context initialization         parameters, including zero.    

  -->

- <context-param>

  <param-name>webmaster</param-name>

  <param-value>[e-mail]</param-value>

  <description>The EMAIL address of the administrator to whom questions and comments about this application should be addressed.</description>

  </context-param>

- <!--

 Servlet definitions for the servlets that make up         your web application, including initialization         parameters.  With Tomcat, you can also send requests         to servlets not listed here with a request like this:           http://localhost:8080/{context-path}/servlet/{classname}         but this usage is not guaranteed to be portable.  It also         makes relative references to images and other resources         required by your servlet more complicated, so defining         all of your servlets (and defining a mapping to them with         a servlet-mapping element) is recommended.         Servlet initialization parameters can be retrieved in a         servlet or JSP page by calling:             String value =               getServletConfig().getInitParameter("name");         where "name" matches the <param-name> element of         one of these initialization parameters.         You can define any number of servlets, including zero.    

  -->

- <servlet>

  <servlet-name>controller</servlet-name>

  <description>This servlet plays the "controller" role in the MVC architecture used in this application. It is generally mapped to the ".do" filename extension with a servlet-mapping element, and all form submits in the app will be submitted to a request URI like "saveCustomer.do", which will therefore be mapped to this servlet. The initialization parameter namess for this servlet are the "servlet path" that will be received by this servlet (after the filename extension is removed). The corresponding value is the name of the action class that will be used to process this request.</description>

  <servlet-class>com.mycompany.mypackage.ControllerServlet</servlet-class>

- <init-param>

  <param-name>listOrders</param-name>

  <param-value>com.mycompany.myactions.ListOrdersAction</param-value>

  </init-param>

- <init-param>

  <param-name>saveCustomer</param-name>

  <param-value>com.mycompany.myactions.SaveCustomerAction</param-value>

  </init-param>

- <!--

 Load this servlet at server startup time 

  -->

  <load-on-startup>5</load-on-startup>

  </servlet>

- <servlet>

  <servlet-name>graph</servlet-name>

  <description>This servlet produces GIF images that are dynamically generated graphs, based on the input parameters included on the request. It is generally mapped to a specific request URI like "/graph".</description>

  </servlet>

- <!--

 Define mappings that are used by the servlet container to         translate a particular request URI (context-relative) to a         particular servlet.  The examples below correspond to the         servlet descriptions above.  Thus, a request URI like:           http://localhost:8080/{contextpath}/graph         will be mapped to the "graph" servlet, while a request like:           http://localhost:8080/{contextpath}/saveCustomer.do         will be mapped to the "controller" servlet.         You may define any number of servlet mappings, including zero.         It is also legal to define more than one mapping for the same         servlet, if you wish to.    

  -->

- <servlet-mapping>

  <servlet-name>controller</servlet-name>

  <url-pattern>*.do</url-pattern>

  </servlet-mapping>

- <servlet-mapping>

  <servlet-name>graph</servlet-name>

  <url-pattern>/graph</url-pattern>

  </servlet-mapping>

- <!--

 Define the default session timeout for your application,         in minutes.  From a servlet or JSP page, you can modify         the timeout for a particular session dynamically by using         HttpSession.getMaxInactiveInterval(). 

  -->

- <session-config>

  <session-timeout>30</session-timeout>

- <!--

 30 minutes 

  -->

  </session-config>

  </web-app>