我编了一个javabean实现从xml文件中读内容：
源码如下：
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();
}
}
}
出错提示为：
D:\JBuilder4\jdk1.3\bin\javaw -classpath "D:\xmlwriter\classes\xmlwriter;D:\JBuilder4\lib\jaxp.jar;D:\JBuilder4\lib\parser.jar;D:\JBuilder4\lib\servlet.jar;D:\JBuilder4\jdk1.3\demo\jfc\Java2D\Java2Demo.jar;D:\JBuilder4\jdk1.3\jre\lib\i18n.jar;D:\JBuilder4\jdk1.3\jre\lib\jaws.jar;D:\JBuilder4\jdk1.3\jre\lib\rt.jar;D:\JBuilder4\jdk1.3\jre\lib\sunrsasign.jar;D:\JBuilder4\jdk1.3\lib\dt.jar;D:\JBuilder4\jdk1.3\lib\tools.jar" xmlwriter.xmldisplay
java.net.MalformedURLException: no protocol: links.xml
at java.net.URL.<init>(URL.java:473)
at java.net.URL.<init>(URL.java:376)
at java.net.URL.<init>(URL.java:330)
at com.sun.xml.parser.InputEntity.init(InputEntity.java:140)
at com.sun.xml.parser.Parser.parseInternal(Parser.java:463)
at com.sun.xml.parser.Parser.parse(Parser.java:284)
at com.sun.xml.parser.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:95)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:100)
at xmlwriter.xmldisplay.main(xmldisplay.java:11)
