XML文件读写工具类

package com.swft.util;

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

import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

/** 
 * @ClassName: XmlObject
 * @description: xml常用工具
 * @author: JTJ
 * @Date: 2019年2月19日 下午1:02:30
 */

public class XmlObject {
	
	/**
	 * @Title: readXml 
	 * @Desc: 读取xml内容 
	 * @param xmlFile
	 * @return xml的字符信息
	 */
	public String readXml(File xmlFile) {
		StringBuilder attribute = new StringBuilder();
		StringBuilder element = new StringBuilder();
		SAXReader saxReader = new SAXReader();
		try {
			Document document = saxReader.read(xmlFile);
			Element rootElement = document.getRootElement();
			@SuppressWarnings("unchecked")
			List<Element> elements = rootElement.elements();
			for(Element child : elements) {
				//属性
				@SuppressWarnings("unchecked")
				List<Attribute> attributeList = child.attributes();
	            for (Attribute attr : attributeList) {
	            	attribute.append(attr.getName()+"="+attr.getValue()+"\n");
	                //System.out.println(attr.getName() + ": " + attr.getValue());
	            }
	            @SuppressWarnings("unchecked")
				List<Element> elementList = child.elements();
	            if(elementList.size()!=0) {
	            	for (Element ele : elementList) {
	                    //System.out.println(ele.getName() + ": " + ele.getText());
	                    element.append(ele.getName()+"="+ele.getText()+"\n");
	                }
	            }
			}
		} catch (DocumentException e) {
			e.printStackTrace();
		}
		return attribute.toString()+element.toString();
	}
	
	//暂未完成
	public Boolean createXml() {
	    Document doc = DocumentHelper.createDocument();
        //增加根节点
        Element books = doc.addElement("books");
        //增加子元素
        Element book1 = books.addElement("book");
        Element title1 = book1.addElement("title");
        Element author1 = book1.addElement("author");
          
        Element book2 = books.addElement("book");
        Element title2 = book2.addElement("title");
        Element author2 = book2.addElement("author");
          
        //为子节点添加属性
        book1.addAttribute("id", "001");
        //为元素添加内容
        title1.setText("Harry Potter");
        author1.setText("J K. Rowling");
          
        book2.addAttribute("id", "002");
        title2.setText("Learning XML");
        author2.setText("Erik T. Ray");
          
        //实例化输出格式对象
        OutputFormat format = OutputFormat.createPrettyPrint();
        //设置输出编码
        format.setEncoding("UTF-8");
        //创建需要写入的File对象
        File file = new File("src" + File.separator + "test" + File.separator + "books.xml");
        //生成XMLWriter对象，构造函数中的参数为需要输出的文件流和格式
        XMLWriter writer;
		try {
			writer = new XMLWriter(new FileOutputStream(file), format);
	        //开始写入，write方法中包含上面创建的Document对象
	        writer.write(doc);
		} catch (Exception e) {
			e.printStackTrace();
	        return false;
		}
        return true;
    }
}

标签：XML,文件,dom4j,读写,Element,File,import,org,addElement
来源： https://blog.csdn.net/qq_36984455/article/details/95165474