JAVA达内上课源码

package com.tarena.day22; 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 TestStudent { public static void main(String[] args) throws Exception{ String filePath = "/home/soft01/xml_day2/student.xml"; SAXBuilder sax = new SAXBuilder(); Document doc = sax.build(filePath); Element el = doc.getRootElement();//得到根节点 List<Element> list = el.getChildren("student");//根节点集合,指的是student的集合;下面还可以有breakLine的集合 for(Element student : list){ // String name = student.getChildTextTrim("name"); // System.out.println(name); Element ele = student.getChild("name");//取单个的用child,集合用children System.out.println(ele.getText()); ele.setText("吕布"); String sex = student.getChildTextTrim("sex"); System.out.println(sex); // Element ele2 = student.getChild("sex"); // ele2.setText("女"); List<Element> list2 = student.getChildren("lesson"); for(Element lesson : list2){ String lessonName = lesson.getChildTextTrim("lessonName"); System.out.println(lessonName); String lessonScore = lesson.getChildTextTrim("lessonScore"); System.out.println(lessonScore); } // Element breakLine = student.getChild("breakLine"); // System.out.println(breakLine.getText()); } List<Element> bre = el.getChildren("breakLine2"); for(Element brea : bre){ // Element line = brea.getChild("lin"); System.out.println(brea.getText()); } XMLOutputter out = new XMLOutputter(); out.output(doc, new FileOutputStream(filePath)); } }