利用Base64实现图片和XML格式的相互转换
package com.neusoft;import java.awt.image.BufferedImage;import java.io.ByteArrayInputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import javax.imageio.ImageIO;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class Test {public static void main(String[] args) {Test t = new Test();t.inputToXML();t.outToImage();}// 图片转换成XMLpublic void inputToXML() {BASE64Encoder encoder = new BASE64Encoder();try {File f = new File("D:\\xml\\1.jpg");// System.out.println("5555");if (f.exists()) {FileInputStream fis = new FileInputStream(f);byte[] buffer = new byte[(int) f.length()];fis.read(buffer);String s_imageData = encoder.encode(buffer);Document doc = DocumentHelper.createDocument();Element root = doc.addElement("ImageList");Element imageID = root.addElement("imageID");Element imageInfo = root.addElement("imageInfo");Element imageSize = root.addElement("imageSize");Element imageData = root.addElement("imageData");imageID.addText("01");imageInfo.addText("图片1");imageSize.addText(String.valueOf(f.length()));imageData.addText(s_imageData);XMLWriter writer = new XMLWriter(new FileOutputStream("D:\\xml\\1.xml"));writer.write(doc);System.out.println("22");writer.flush();writer.close();} else {System.out.println("找不到要转换的图片文件！");}} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}// XML转成图片public void outToImage() {File f = new File("D:\\xml\\1.xml");SAXReader reader = new SAXReader();try {Document doc = reader.read(f);byte[] aa = doc.asXML().getBytes() ;System.out.println(new String(aa,"UTF-8"));Element root = doc.getRootElement();Element image = (Element) root.selectSingleNode("imageData");String s_data = image.getText();BASE64Decoder decoder = new BASE64Decoder();byte[] data = decoder.decodeBuffer(s_data);FileOutputStream fos = new FileOutputStream("D:\\xml\\71198.jpg");fos.write(data);fos.flush();fos.close();} catch (DocumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}
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