xml解析程序，class文件生成后，用java运行时报错 请教！

[peterbull]

出错信息如下：
Exception in thread "main" java.lang.NoClassDefFoundError: xmldisplay (wrong nam
e: xmlwriter/xmldisplay)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
3)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:250)
at java.net.URLClassLoader.access$100(URLClassLoader.java:54)
at java.net.URLClassLoader$1.run(URLClassLoader.java:193)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)

原文件如下，附build.xml文件，通过ant编译
xmldisplay.java:
package xmlwriter;
import javax.xml.parsers.*;
import org.w3c.dom.*;

public class xmldisplay {
public static void main(String args[]){
try{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder=factory.newDocumentBuilder();
Document doc=builder.parse("links.xml");
doc.normalize();
NodeList links =doc.getElementsByTagName("link");
for (int i=0;i<links.getLength();i++){
Element link=(Element) links.item(i);
System.out.print("Content: ");
System.out.println(link.getElementsByTagName("text").item(0).getFirstChild().getNodeValue());
System.out.print("URL: ");
System.out.println(link.getElementsByTagName("url").item(0).getFirstChild().getNodeValue());
System.out.print("Author: ");
System.out.println(link.getElementsByTagName("author").item(0).getFirstChild().getNodeValue());
System.out.print("Date: ");
Element linkdate=(Element) link.getElementsByTagName("date").item(0);
String day=linkdate.getElementsByTagName("day").item(0).getFirstChild().getNodeValue();
String month=linkdate.getElementsByTagName("month").item(0).getFirstChild().getNodeValue();
String year=linkdate.getElementsByTagName("year").item(0).getFirstChild().getNodeValue();
System.out.println(day+"-"+month+"-"+year);
System.out.print("Description: ");
System.out.println(link.getElementsByTagName("description").item(0).getFirstChild().getNodeValue());
System.out.println();
}
}catch(Exception e){
e.printStackTrace();
}

}
}


build.xml:
<?xml version="1.0"?>

<project name="xmlparse" default="compile" basedir=".">


<!-- set global properties for this build -->
<property name="src" value="src"/>
<property name="build" value="build"/>
<property name="dist" value="dist"/>

<target name="init">
<!-- Create the time stamp -->
<tstamp/>
<!-- Create the build directory structure used by compile -->
<mkdir dir="${build}"/>
</target>

<target name="compile" depends="init">
<!-- Compile the java code from ${src} into ${build} -->
<javac srcdir="${src}" destdir="${build}"/>
</target>

<target name="clean">
<!-- Delete the ${build} and ${dist} directory trees -->
<delete dir="${build}"/>
<delete dir="${dist}"/>
</target>

<!--
| Run the standalone client
-->
<target name = "client">
<echo>${java.class.path}</echo>
<java classname="xmlwriter.xmldisplay" fork="yes">
<classpath>
<pathelement path="${java.class.path}"/>
</classpath>
</java>
</target>

</project>


_________________

[jjja]

用什么解析器？

[whyxx]

classpath设置不对

[atq9]

学习