Java Web部署：web.xml各参数介绍

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>dwmis框架系统</display-name>
<description>dwmis框架系统</description>
<!--上下文参数：声明应用范围内的初始化参数-->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.properties</param-value>
</context-param>
<context-param>
<param-name>webAppRootKey</param-name>
<param-value>dwmis.root</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<!--过滤器定义。Servlet版本2.3引入了过滤器的概念。过滤器可截取和修改一个Servlet或JSP页面的请求或            或从一个Servlet或JSP页面发出的响应。过滤器具有对到来的ServletRequest对象的全部访问权，因此可            可以查看客户机名、查找到来的cookie等。--> 23     <filter>
<filter-name>Encoding</filter-name>
<filter-class>
com.dareway.framework.filter.EncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GBK</param-value>
</init-param>
</filter>
<filter>
<filter-name>SafetyFilter</filter-name>
<filter-class>
com.dareway.framework.filter.SafetyFilter
</filter-class>
</filter>
<!--过滤器映射：可使用filter-name和servlet-name子元素把过滤器与一个特定的Servlet名关联;也可以用filter-name和            url-pattern子元素将过滤器与一组Servlet、JSP页面或静态内容相关联。->
<filter-mapping>
<filter-name>Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>SafetyFilter</filter-name>
<servlet-name>dwmis</servlet-name>
</filter-mapping>
<!--监听器：事件监听程序在建立、修改和删除会话或Servlet环境时，得到通知。listener元素指出事件监听程序类-->
<listener>
<listener-class>
com.dareway.framework.log4j.Log4jConfigListener
</listener-class>
</listener>
<listener>
<listener-class>
com.dareway.framework.plugin.AppContextPlugIn
</listener-class>
</listener>
<!--Servlet定义：在向Servlet或JSP页面制定初始化参数或定制URL时，必须首先命名Servlet或JSP页面-->
<servlet>
<servlet-name>context</servlet-name>
<servlet-class>
org.springframework.web.context.ContextLoaderServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet>
<servlet-name>dwmis</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/dwmis-servlet.xml</param-value>
</init-param>
<init-param>
<param-name>charset</param-name>
<param-value>GBK</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<!--Servlet映射：服务器一般为servlet提供一个默认的URL：http://host/webAppPrefix/servlet/ServletName.
但是，常常会更改这个URL，一边servlet开一个访问初始化数据或更容易处理相对URL。-->
<servlet-mapping>
<servlet-name>dwmis</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>treeServlet</servlet-name>
<url-pattern>/treeServlet</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>AxisServlet</servlet-name>
<url-pattern>/services/*</url-pattern>
</servlet-mapping>
<!--控制会话超时-->
<session-config>
<session-timeout>60</session-timeout>
</session-config>123     <!--欢迎制定文件-->
<welcome-file-list>
<welcome-file>logonDialog.jsp</welcome-file>
</welcome-file-list>
<!--定位TLD:taglib元素对标记库描述符文件（Tag Librayu Descriptor file)指定别名。此功能使你能够更改TLD文件的位置，
而不用编辑使用这些文件的JSP页面-->
<taglib>
<taglib-uri>darewayBS.tld</taglib-uri>
<taglib-location>/WEB-INF/darewayBS.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>darewayForJSP.tld</taglib-uri>
<taglib-location>/WEB-INF/darewayForJSP.tld</taglib-location>
</taglib>
</web-app>