jdom读取xml

import java.io.File;
import java.io.FileOutputStream;
import java.util.List;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;

public class Demo {
private static String filea = "c: \\A.xml";
private static String fileb = "c: \\B.xml";
private static String filec = "c:\\合并后.xml";
public static void main(String[] args) throws Exception {
SAXBuilder builderb = new SAXBuilder();
Document documentb = builderb.build(new File(fileb));
Element rootb = documentb.getRootElement();
SAXBuilder buildera = new SAXBuilder();
Document documenta = buildera.build(new File(filea));
Element elementa = documenta.getRootElement();
List<Element> elementLista = elementa.getChildren();
for (Element element : elementLista) {
if(element.getAttribute("name").equals("app_name")){
continue;
}
rootb.addContent((Element) element.clone());
}
XMLOutputter outputter = new XMLOutputter("    ",true);
outputter.output(documentb, new FileOutputStream(filec));

}

}