Javaweb中使用Jdom解析xml的方法

package com.book.jdom;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.output.Format;
import org.jdom2.output.XMLOutputter;
//生成xml文件
public class CreateJdom {
public static void main(String[] args) {
//定义元素
Element people,student;
people = new Element("people");
student = new Element("student");
//设置属性
student.setAttribute("name", "张三");
student.setAttribute("salary","8000");
//设置文本
student.setText("呵呵");
//将其添加到根目录下
people.addContent(student);
//新建一个文档。
Document doc = new Document(people);
//读取格式，赋值给当前的Format
Format format = Format.getCompactFormat();
//对当前格式进行初始化
format.setEncoding("UTF-8");
//设置xml文件缩进4个空格
format.setIndent(" ");
//建一个xml输出工厂，将格式给工厂
XMLOutputter xmlout = new XMLOutputter(format);
try {
//将其写好的文本给工厂，并且建一个文件输出流，将数据输出
xmlout.output(doc, new FileOutputStream("people.xml"));
System.out.println("成功！");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
/*运行结果:
<&＃63;xml version="1.0" encoding="UTF-8"&＃63;>



* */

package com.book.jdom;
import java.io.IOException;
import java.util.List;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;
//读取people.xml文档
public class Readxml {
public static void main(String[] args) {
//新建构造器解析xml
SAXBuilder sax = new SAXBuilder();
//建一个文档去接受数据
Document doc;
try {
//获取people.xml文档
doc = sax.build("people.xml");
//获得根节点
Element people = doc.getRootElement();
//获得根节点下的节点数据
List list = people.getChildren();
for(int i = 0;i

用jdom获取多个相同标签名的不同属性值的方法
<&＃63;xml version="1.0" encoding="UTF-8"&＃63;>

    
      China
      true
      38PhotoIDWidth
      38
      
        0.10
        0.60AdultHeadPercent
      
      
        0.10
        0.60ChildHeadPercent
      
    
    
      Australia
      true
      35PhotoIDWidth
      45
      
        0.061
        0.756"Adult"HeadPercent
      
      
        0.072
        0.711ChildHeadPercent
      
    
    
      Austria
      true
      35PhotoIDWidth
      45
      
        0.064
        0.744AdultHeadPercent
      
      
        0.078
        0.689ChildHeadPercent
      
    

package input;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
public class ReadXML {
  /**
   * @param args
   */
  public static void main(String[] args) throws JDOMException, IOException {
    SAXBuilder sb = new SAXBuilder();
    //构造文档对象
    Document doc = sb.build(Test.class.getClassLoader().getResourceAsStream("nation.xml"));
    //获取根元素
    Element root = doc.getRootElement();
    //定位到 -> 
    List list = root.getChildren("Key");
    List children = new ArrayList();
    List childrens = new ArrayList();
    for (int i = 0; i  ->  -> 
      children = element.getChildren("Value"); 
      for(int j=0; j ->  -> 
        if(elementChildren.getAttributeValue("Name").equals("PhotoIDWidth")){
          //获取 ->  ->  属性值
          System.out.print("<--------->"+elementChildren.getAttributeValue("Name"));
          //获取 ->  ->  标签里内容
          System.out.print(","+elementChildren.getText());
        }
      }
      children.clear();
      //定位到 ->  -> 
      children = element.getChildren("Key");
      for(int j=0; j ->  -> 
        if(elementChildren.getAttributeValue("Name").equals("Child")){
          //定位到 ->  ->  -> 
          childrens = elementChildren.getChildren("Value");
          for(int k=0; k ->  ->  -> 
            if(elementChildrens.getAttributeValue("Name").equals("HeadPercent")){
              System.out.println("<--------->"+elementChildrens.getText());
            }
          }
        }
      }
    }
  }
}
打印结果：
China<--------->PhotoIDWidth,38PhotoIDWidth<--------->0.60ChildHeadPercent
Australia<--------->PhotoIDWidth,35PhotoIDWidth<--------->0.711ChildHeadPercent
Austria<--------->PhotoIDWidth,35PhotoIDWidth<--------->0.689ChildHeadPercent