dom4j对于xml文件的一些操作
import java.io.File;import java.io.FileOutputStream;import org.dom4j.Document;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.OutputFormat;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;public class XMLReader { /** *xml文档或节点转换为字符串 */ public void xmlReader()throws Exception{ //创建SAXReader对象 SAXReader reader = new SAXReader(); //读取文件 转换成Document Document document = reader.read(new File("H://DESKTOP//quyukeshi_cache.xml")); //document转换为String字符串 String documentStr = document.asXML(); System.out.println("document 字符串：" + documentStr); //获取根节点 Element root = document.getRootElement(); //根节点转换为String字符串 String rootStr = root.asXML(); System.out.println("root 字符串：" + rootStr); //获取其中student1节点 Element student1Node = root.element("student1"); //student1节点转换为String字符串 String str = student1Node.asXML(); System.out.println("xml 字符串：" + str); } /** * xml字符串转换为Document对象 */ public void xmlToDocument()throws Exception{ String xmlStr = "<employee><empname>测试</empname><age>25</age><title>软件开发工程师</title></employee>"; Document document = DocumentHelper.parseText(xmlStr); //把生成的xml文档存放在硬盘上 true代表是否换行 OutputFormat format = new OutputFormat(" ",true); format.setEncoding("GBK");//设置编码格式 XMLWriter xmlWriter = new XMLWriter(new FileOutputStream("H://DESKTOP//Person.xml"),format); xmlWriter.write(document); xmlWriter.close(); } public void createDocument()throws Exception{ Document document = DocumentHelper.createDocument(); Element rootElement = document.addElement("employee"); Element empName = rootElement.addElement("empname"); empName.addElement("测试").addAttribute("婚姻", "单身").addText("小章"); Element empAge = rootElement.addElement("age"); empAge.setText("25"); Element empTitle = rootElement.addElement("title"); empTitle.setText("软件开发工程师"); //把生成的xml文档存放在硬盘上 true代表是否换行 OutputFormat format = new OutputFormat(" ",true); format.setEncoding("GBK");//设置编码格式 XMLWriter xmlWriter = new XMLWriter(new FileOutputStream("H://DESKTOP//Person1.xml"),format); xmlWriter.write(document); xmlWriter.close(); } public static void main(String[] args) throws Exception { XMLReader handler = new XMLReader(); handler.xmlReader(); handler.xmlToDocument(); handler.createDocument(); }}import java.io.File;impo 
