使用JDOM读取XML文件

books.xml：

<?xml version="1.0" encoding="utf-8" ?>
<books>
    <book id="001">
        <title>Harry Potter</title>
        <author>J K. Rowling</author>
        <price>$50.2</price>
    </book>
    <book id="002">
        <title>Learning XML</title>
        <author>Erik T. Ray</author>
        <price>$90</price>
    </book>
</books>

引入jdom包的maven依赖：

<!-- https://mvnrepository.com/artifact/org.jdom/jdom/2.0.0-->
    <dependency>
        <groupId>org.jdom</groupId>
        <artifactId>jdom</artifactId>
        <version>2.0.0</version>
    </dependency>

读取xml文件程序：

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

import java.io.File;
import java.io.IOException;

public class MyXmlReader {
    static class Book{
        String title;
        String author;
        String price;

        public Book(String title, String author, String price) {
            this.title = title;
            this.author = author;
            this.price = price;
        }

        public void read(){
            System.out.println("title: "+title+"  author: "+author+"  price: "+price);
        }
    }


    public static void main(String[] args) {
        try {
            SAXBuilder builder = new SAXBuilder();
            Document document = builder.build(new File("src/main/resources/books.xml"));
            document.getRootElement().getChildren().stream()
                    .map(child->{
                        return new Book(child.getChildText("title")
                                ,child.getChildText("author")
                                ,child.getChildText("price"));
                    }).forEach(Book::read);

        }catch (IOException | JDOMException e){
            e.printStackTrace();
        }
    }
}

输出结果：
title: Harry Potter  author: J K. Rowling  price: $50.2
title: Learning XML  author: Erik T. Ray  price: $90