摘要：
1包装试验；23导入java.awt.image.BufferdImage；4importjava.io.ByteArrayInputStream；5importjava.io.ByteArrayOutputStream；6importjava.io.File；7导入java.util.Hashtable；89导入javax.imageio.imageio；
1 package test; 2 3 import java.awt.image.BufferedImage; 4 import java.io.ByteArrayInputStream; 5 import java.io.ByteArrayOutputStream; 6 import java.io.File; 7 import java.util.Hashtable; 8 9 import javax.imageio.ImageIO; 10 11 import com.google.zxing.BarcodeFormat; 12 import com.google.zxing.EncodeHintType; 13 import com.google.zxing.MultiFormatWriter; 14 import com.google.zxing.client.j2se.MatrixToImageWriter; 15 import com.google.zxing.common.BitMatrix; 16 import com.sun.org.apache.xerces.internal.impl.dv.util.Base64; 17 18 public class Test { 19 20 public static void main(String[] args) throws Exception { 21 String text = "你好"; 22 23 int width = 100; 24 int height = 100; 25 String format = "png"; 26 Hashtable hints = new Hashtable(); 27 hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); 28 BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints); 29 File outputFile = new File("new.png"); 30 MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); 31 32 byte[] b = toByteArray(new File("new.png")); 33 new Base64(); 34 String s = Base64.encode(b); 35 // String s = new String(b, "utf-8"); 36 System.out.println(s); 37 // new Base64(); 38 ByteArrayInputStream in = new ByteArrayInputStream(Base64.decode(s)); 39 BufferedImage image = ImageIO.read(in); 40 File newFile = new File("new2.png"); 41 ImageIO.write(image, "png", newFile); 42 43 } 44 45 public static byte[] toByteArray(File imageFile) throws Exception { 46 BufferedImage img = ImageIO.read(imageFile); 47 ByteArrayOutputStream buf = new ByteArrayOutputStream((int) imageFile.length()); 48 try { 49 ImageIO.write(img, "jpg", buf); 50 } catch (Exception e) { 51 e.printStackTrace(); 52 return null; 53 } 54 return buf.toByteArray(); 55 } 56 57 }
