请问jbuilder中的web.xml如何设置

[wlm721]

请问web.xml该如何设置,有没有相关的资料,介绍介绍,

[wlm721]

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">

<web-app id="WebApp">
<display-name>myhomepage</display-name>
<servlet id="Servlet_1">
<servlet-name>manage1</servlet-name>
<display-name>manage1</display-name>
<servlet-class>manage1</servlet-class>
</servlet>
<servlet-mapping id="ServletMapping_1">
<servlet-name>manage1</servlet-name>
<url-pattern>com/index</url-pattern>
</servlet-mapping>
<welcome-file-list id="WelcomeFileList_1">
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>


请问该文件如何解读?