玩玩 Java dom4j

测试数据：

<?xml version="1.0" encoding="UTF-8"?>
<books>
    <book>
        <name>Java编程基础</name>
        <price>88</price>
    </book>

    <book>
        <name>Java高级应用</name>
        <price>99</price>
    </book>
</books>

Maven依赖

        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version>1.6.1</version>
        </dependency>
        <dependency>
            <groupId>jaxen</groupId>
            <artifactId>jaxen</artifactId>
            <version>1.1.6</version>
        </dependency>

测试代码：

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.junit.Test;

import java.io.File;
import java.util.List;

/**
 * Created by Administrator on 2018/7/7 17:14 in Beijing.
 */

public class Dom4jTest {
    @Test
    public void demo1() throws DocumentException {
        SAXReader saxReader = new SAXReader();
        Document document = saxReader.read(new File("./src/main/resources/books.xml"));

        //得到根元素
        Element rootElement = document.getRootElement();

        List<Element> bookList1 = rootElement.elements();
        for (Element book : bookList1) {
            System.out.println(book.element("name").getText() + " ---- "+ book.element("price").getText());
        }

        System.out.println();
        System.out.println(rootElement.selectSingleNode("//name").getText());   //获取的是第一个
        System.out.println();

        //使用Xpath方式
        List<Element> bookList2 = rootElement.selectNodes("//book");
        for (Element book : bookList2) {
            System.out.println(book.element("name").getText() + " ---- "+ book.element("price").getText());
        }
    }
}

输出：

Java编程基础 ---- 88
Java高级应用 ---- 99

Java编程基础

Java编程基础 ---- 88
Java高级应用 ---- 99