使用JDOM解析XML文档

一、导入依赖包

第一步：在https://mvnrepository.com/search?q=jdom网站上搜索jdom

第二步：选择相应的版本

 

第三步：复制dependency内容

第四步：新建工程，并在pom.xml中添加dependency

使用JDOM4J解析XML文档如法炮制，将jdom4j导入到pom.xml中

第五步：查看依赖包是否导入成功

二、示例：

1.配置pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.uos</groupId>
    <artifactId>handlexml</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>7</source>
                    <target>7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <packaging>jar</packaging>
    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.jdom/jdom -->
        <dependency>
            <groupId>org.jdom</groupId>
            <artifactId>jdom</artifactId>
            <version>2.0.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/dom4j/dom4j -->
        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version>1.6.1</version>
        </dependency>
    </dependencies>


</project>

2.新建studnet.xml

<?xml version="1.0" encoding="gb2312" ?>
<?xml-stylesheet type='text/css' href='students.css'?>
<student id="2013010111">
    <name>小田</name>
    <age>22</age>
    <description><![CDATA[最喜爱的图书《红楼梦》]]></description>
</student>

3.新建JDOMRead类

package com.uos.xml;

import org.jdom2.*;
import org.jdom2.input.SAXBuilder;

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

public class JDOMRead {
    public static void main(String[] args) {
        //构建解析器，使用SAX解析器
        SAXBuilder saxBuilder = new SAXBuilder();
        try{
            //读取XML文件
            Document doc = saxBuilder.build(new File("E:\JavaProject\HandleXml\src\main\java\com\uos\xml\student.xml"));　　//该路径为需要解析的xml文档的路径
            //获取doc的所有内容
            List<Content> list = doc.getContent();
            //调用readAndPrint方法进行解析
            readAndPrint(list);
        }catch(JDOMException | IOException e){
            e.printStackTrace();
        }
    }
    //使用递归方式解析并显示所有的XML文档内容
    private static void readAndPrint(List<Content> list) {
        for (Content temp:list){
            //如果获取的内容是注释
            if (temp instanceof Comment){
                Comment com = (Comment)temp;
                System.out.println("<--"+com.getText()+"-->");
            // 如果获取的内容是处理指令
            }else if (temp instanceof ProcessingInstruction){
                ProcessingInstruction pi = (ProcessingInstruction)temp;
                System.out.println("<?"+pi.getTarget()+""+pi.getData()+"?>");
            //如果获取的内容是元素
            }else if (temp instanceof Element){
                Element elt = (Element)temp;
                List<Attribute> attrs = elt.getAttributes();
                System.out.println("<"+elt.getName()+"");
                for (Attribute t:attrs){
                    System.out.println(t.getName()+"=""+t.getValue()+""");
                }
                System.out.println(">");
                readAndPrint(elt.getContent());
                System.out.println("</"+elt.getName()+">");
            //如果获取的内容是CDATA
            }else if (temp instanceof CDATA){
                CDATA cdata = (CDATA)temp;
                System.out.println("<![CDATA["+cdata.getText()+"]]>");
            //如果获取的内容是文本
            }else if (temp instanceof Text){
                Text text = (Text)temp;
                if (!text.getText().trim().equals("")){
                    System.out.println(text.getText());
                }
            }
        }
    }
}

运行结果：