java----JDOM解析XML

JDOM：

与DOM类似，基于树形结构

效率比DOM快

下载：

http://www.jdom.org/dist/binary/jdom-2.0.6.zip

导包导java中的工程目录

jdom-2.0.6.jar

　　

使用

import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

public class Demo{
    public static void main(String[] args) throws JDOMException, IOException {
        JDOMtest();
    }
    private static void JDOMtest() throws JDOMException, IOException {
        //创建JDOM解析器
        SAXBuilder builder = new SAXBuilder();
        InputStream resourceAsStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("com\\first\\person.xml");
        //将文件加载到builder解析器中
        Document build = builder.build(resourceAsStream);

        ArrayList<Person> personList = new ArrayList<>();
        //获取根节点
        //System.out.println(build.getRootElement().getName());
        List<Element> children = build.getRootElement().getChildren();
        Person person = null;
        for (int i = 0; i < children.size(); i++) {
            person = new Person();
            String p_id = children.get(i).getAttributeValue("person_id");
            person.setId(p_id);
            List<Element> next_childern = children.get(i).getChildren();
            for (int j = 0; j < next_childern.size(); j++) {
                if ("name".equals(next_childern.get(j).getName())){
                    String name = next_childern.get(j).getValue();
                    //也是获取文本内容
                    //String name = next_childern.get(j).getText()
                    person.setName(name);
                }
                if ("age".equals(next_childern.get(j).getName())){
                    String age = next_childern.get(j).getValue();
                    person.setAge(age);
                }
            }
            personList.add(person);
        }
        personList.forEach((p)-> System.out.println(p));
    }
}

class Person{
    private String name;
    private String age;
    private String id;
    public void setName(String name) {
        this.name = name;
    }
    public void setAge(String age) {
        this.age = age;
    }
    public void setId(String id) {
        this.id = id;
    }
    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age='" + age + '\'' +
                ", id='" + id + '\'' +
                '}';
    }
}

　　

XML文件

<?xml version="1.0" encoding="UTF-8" ?>
<Person>
    <person person_id="p1">
        <name>zy</name>
        <age>18</age>
    </person>
    <person person_id="p2">
        <name>zt</name>
        <age>20</age>
    </person>
</Person>