java解析xml四种方式(4)-jdom方式

java解析xml四种方式(4)-jdom方式

为减少DOM、SAX的编码量，出现了JDOM；

优点：20-80原则，极大减少了代码量。

使用场合：要实现的功能简单，如解析、创建等，但在底层，JDOM还是使用SAX（最常用）、DOM、Xanan文档。

package com.michael.xml.jdom;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

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

import com.michael.xml.dom.XmlDocument;

public class JDomDemo implements XmlDocument {
public void createXml(String fileName) {
Document document;
Element root;
root = new Element("employees");
document = new Document(root);
Element employee = new Element("employee");
root.addContent(employee);
Element name = new Element("name");
name.setText("michael");
employee.addContent(name);
Element sex = new Element("sex");
sex.setText("m");
employee.addContent(sex);
Element age = new Element("age");
age.setText("23");
employee.addContent(age);
XMLOutputter XMLOut = new XMLOutputter();
try {
XMLOut.output(document, new FileOutputStream(fileName));
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

public void parserXml(String fileName) {
SAXBuilder builder = new SAXBuilder(false);
try {
Document document = builder.build(fileName);
Element employees = document.getRootElement();
List employeeList = employees.getChildren("employee");
for (int i = 0; i < employeeList.size(); i++) {
Element employee = (Element) employeeList.get(i);
List employeeInfo = employee.getChildren();
for (int j = 0; j < employeeInfo.size(); j++)
System.out.println(((Element) employeeInfo.get(j))
.getName()
+ ":"
+ ((Element) employeeInfo.get(j)).getValue());
}
} catch (JDOMException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

public static void main(String[] args) {
JDomDemo demo = new JDomDemo();
// demo.createXml("d:/michael_jdom.xml");
demo.parserXml("d:/michael_jdom.xml");
}
}


注意：以上代码依赖jdom.jar