dom4j对于xml文件的一些操作

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();
    }
}