在web开发中可以在web.xml文件中配置自启动的servlet或者web容器监听器，借助两者中的任何一者都可以完成启动spring web应用上下文的工作。
下面给出使用web监听器的方式来实现启动是spring容器的配置文件
<span style="font-size:18px;"><?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"id="WebApp_ID" version="2.5"><display-name>demo-demo Web Application</display-name><context-param><param-name>contextConfigLocation</param-name><param-value>classpath*:config/spring/common/appcontext-*.xml,classpath*:config/spring/local/appcontext-*.xml,classpath*:config/spring/local/emidas-activity-biz-*.xml,classpath*:config/spring/local/emidas-activity-web-*.xml</param-value></context-param><context-param><param-name>log4jConfigLocation</param-name><param-value>classpath:log/log4j.xml</param-value></context-param><context-param><param-name>log4jRefreshInterval</param-name><param-value>60000</param-value></context-param><filter><filter-name>encodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>utf-8</param-value></init-param><init-param><param-name>forceEncoding</param-name><param-value>true</param-value></init-param></filter><filter><filter-name>cat-filter</filter-name><filter-class>com.dianping.cat.servlet.CatFilter</filter-class></filter><filter><filter-name>struts-prepare</filter-name><filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class><init-param><param-name>config</param-name><param-value>struts-default.xml,struts-plugin.xml,config/struts/struts.xml</param-value></init-param></filter><filter><filter-name>sitemesh</filter-name><!--<filter-class>com.dianping.decorator.sitemesh.ExtendedSiteMeshFilter</filter-class>--><filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class></filter><filter><filter-name>struts-execute</filter-name><filter-class>com.dianping.midas.authority.api.common.AuthorityFilter</filter-class><init-param><!-- <param-name>include</param-name><param-value>login,selectActivity,addActivityInit,updateActivity,addLaunchInit,selectActivity,updateActivity,selectModule,addModuleInit,updateModule</param-value> --> <param-name>exclude</param-name><param-value>/getActivityDataSum,/activities/external/ajax,/penaltyChartClear,/activityChartClear,/penaltyChart,/activityChart,/mactivity/common,/brandArea,/getImgUrlAjax,/ftpUpLoadImgAjax,/index.html,/Heartbeat.html,/getPrizePackageUrl,/getLaunchInfoByActivityId,/addLaunchInterface,/freeOrderLaunchStatus,/invokeForMaterial,/checkToken,/listShopsAjaxNew,/listShopsAjax,/generationLaunch,/pushActivity,/promotion,/operation,/img,/js,/css,/newClickdate</param-value></init-param></filter><filter-mapping><filter-name>encodingFilter</filter-name><url-pattern>/*</url-pattern><dispatcher>REQUEST</dispatcher><dispatcher>FORWARD</dispatcher></filter-mapping><filter-mapping><filter-name>cat-filter</filter-name><url-pattern>/*</url-pattern><dispatcher>REQUEST</dispatcher><dispatcher>FORWARD</dispatcher></filter-mapping><filter-mapping><filter-name>struts-prepare</filter-name><url-pattern>/*</url-pattern><dispatcher>REQUEST</dispatcher><dispatcher>FORWARD</dispatcher></filter-mapping><filter-mapping><filter-name>sitemesh</filter-name><url-pattern>/*</url-pattern><dispatcher>REQUEST</dispatcher><dispatcher>FORWARD</dispatcher><dispatcher>INCLUDE</dispatcher></filter-mapping><filter-mapping><filter-name>struts-execute</filter-name><url-pattern>/*</url-pattern><dispatcher>REQUEST</dispatcher><dispatcher>FORWARD</dispatcher></filter-mapping><servlet><servlet-name>JspSupportServlet</servlet-name><servlet-class>org.apache.struts2.views.JspSupportServlet</servlet-class><load-on-startup>1</load-on-startup></servlet><servlet><servlet-name>errorHandlerServlet</servlet-name><servlet-class>com.dianping.emidas.base.errorhandle.ErrorHandlerServlet</servlet-class></servlet><servlet-mapping><servlet-name>errorHandlerServlet</servlet-name><url-pattern>/errorHandlerServlet.xfc</url-pattern></servlet-mapping><error-page><exception-type>java.lang.Throwable</exception-type><location>/errorHandlerServlet.xfc</location></error-page><error-page><error-code>404</error-code><location>/errorHandlerServlet.xfc</location></error-page><listener><listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class></listener><listener><listener-class>com.dianping.cat.servlet.CatListener</listener-class></listener><strong><listener><listener-class>org.springframework.web.util.Log4jConfigListener</listener-class></listener><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener></strong><listener><listener-class>org.apache.struts2.dispatcher.ng.listener.StrutsListener</listener-class></listener><servlet><servlet-name>sitemesh-freemarker</servlet-name><servlet-class>com.opensymphony.module.sitemesh.freemarker.FreemarkerDecoratorServlet</servlet-class><init-param><param-name>TemplatePath</param-name><param-value>/</param-value></init-param><init-param><param-name>default_encoding</param-name><param-value>utf-8</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>sitemesh-freemarker</servlet-name><url-pattern>*.ftl</url-pattern></servlet-mapping><welcome-file-list><welcome-file>login.ftl</welcome-file></welcome-file-list>
</web-app></span>
)
)
