那里有好的XML的opensource

Question

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<?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">
<!-- generated by Spindle, http://spindle.sourceforge.net -->
<web-app>
    <display-name>TestTap</display-name>
    <filter>
        <filter-name>redirect</filter-name>
        <filter-class>org.apache.tapestry.RedirectFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>redirect</filter-name>
        <url-pattern>/</url-pattern>
    </filter-mapping>
    <servlet>
        <servlet-name>TestTap</servlet-name>
        <servlet-class>org.apache.tapestry.ApplicationServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>TestTap</servlet-name>
        <url-pattern>/app</url-pattern>
    </servlet-mapping>
</web-app>
你还是先看看XML是干什么的吧。解XML的多了去了，JDK里面有自己的包！或者使用开螈的apache的DOM4J也行，比较简单，想知道怎么用就用DOM4J做关键词去检索一下