java生成二维码使用QRCode和ZXing两种方式

QRCode开发需要包 http://download.csdn.net/detail/xiaokui_wingfly/7957815

ZXing开发需要包 http://download.csdn.net/detail/u010457960/5301392

QRCode方式
package cn.utils;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;

import javax.imageio.ImageIO;

import jp.sourceforge.qrcode.QRCodeDecoder;
import jp.sourceforge.qrcode.data.QRCodeImage;
import jp.sourceforge.qrcode.exception.DecodingFailedException;

import com.swetake.util.Qrcode;

public class QRCodeUtils {
/**
* 编码字符串内容到目标File对象中
*
* @param encodeddata 编码的内容
* @param destFile 生成file文件 1381090722 5029067275903
* @throws IOException
*/
public static void qrCodeEncode(String encodeddata, File destFile) throws IOException {
Qrcode qrcode = new Qrcode();
qrcode.setQrcodeErrorCorrect(‘M’); // 纠错级别（L 7%、M 15%、Q 25%、H 30%）和版本有关
qrcode.setQrcodeEncodeMode(‘B’);
qrcode.setQrcodeVersion(7); // 设置Qrcode包的版本

   byte[] d = encodeddata.getBytes("GBK"); // 字符集      BufferedImage bi = new BufferedImage(139, 139, BufferedImage.TYPE_INT_RGB);      // createGraphics   // 创建图层     Graphics2D g = bi.createGraphics();      g.setBackground(Color.WHITE);   // 设置背景颜色（白色）      g.clearRect(0, 0, 139, 139);    // 矩形 X、Y、width、height      g.setColor(Color.BLACK);    // 设置图像颜色（黑色）      if (d.length > 0 && d.length < 123) {          boolean[][] b = qrcode.calQrcode(d);          for (int i = 0; i < b.length; i++) {              for (int j = 0; j < b.length; j++) {                  if (b[j][i]) {                      g.fillRect(j * 3 + 2, i * 3 + 2, 3, 3);                 }             }          }      }  

// Image img = ImageIO.read(new File(“D:/tt.png”)); logo
// g.drawImage(img, 25, 55,60,50, null);

   g.dispose(); // 释放此图形的上下文以及它使用的所有系统资源。调用 dispose 之后，就不能再使用 Graphics 对象      bi.flush(); // 刷新此 Image 对象正在使用的所有可重构的资源      ImageIO.write(bi, "png", destFile);      System.out.println("Input Encoded data is：" + encodeddata);  }  /**  * 解析二维码，返回解析内容  *   * @param imageFile  * @return  */  public static String qrCodeDecode(File imageFile) {      String decodedData = null;      QRCodeDecoder decoder = new QRCodeDecoder();      BufferedImage image = null;      try {          image = ImageIO.read(imageFile);      } catch (IOException e) {          System.out.println("Error: " + e.getMessage());      }      try {          decodedData = new String(decoder.decode(new J2SEImage(image)), "GBK");          System.out.println("Output Decoded Data is：" + decodedData);      } catch (DecodingFailedException dfe) {          System.out.println("Error: " + dfe.getMessage());      } catch (UnsupportedEncodingException e) {         e.printStackTrace();      }      return decodedData;  }  public static void main(String[] args) {      String FilePath = "d:/qrcode.png";      File qrFile = new File(FilePath);      // 二维码内容      String encodeddata = "Hello X-rapido";      try {          QRCodeUtils.qrCodeEncode(encodeddata, qrFile);      } catch (IOException e) {          e.printStackTrace();      }      // 解码      String reText = QRCodeUtils.qrCodeDecode(qrFile);      System.out.println(reText);  }  

106.}

108.class J2SEImage implements QRCodeImage {
BufferedImage image;

public J2SEImage(BufferedImage image) {      this.image = image;  }  public int getWidth() {      return image.getWidth();  }  public int getHeight() {      return image.getHeight();  }  public int getPixel(int x, int y) {      return image.getRGB(x, y);  }  

}

Zxing方式
package cn.utils.code;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;

import javax.imageio.ImageIO;

import com.google.zxing.common.BitMatrix;

/**
* 二维码的生成需要借助MatrixToImageWriter类，该类是由Google提供的，可以将该类直接拷贝到源码中使用
*/
public class MatrixToImageWriter {
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;

private MatrixToImageWriter() {  }  public static BufferedImage toBufferedImage(BitMatrix matrix) {      int width = matrix.getWidth();      int height = matrix.getHeight();      BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);      for (int x = 0; x < width; x++) {          for (int y = 0; y < height; y++) {              image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);          }      }      return image;  }  public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException {      BufferedImage image = toBufferedImage(matrix);      if (!ImageIO.write(image, format, file)) {          throw new IOException("Could not write an image of format " + format + " to " + file);      }  }  public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException {      BufferedImage image = toBufferedImage(matrix);     if (!ImageIO.write(image, format, stream)) {          throw new IOException("Could not write an image of format " + format);      }  }  

}
编写main方法
[java] view plaincopyprint?
package cn.utils.code;

import java.io.File;
import java.util.Hashtable;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;

public class Main {
public static void main(String[] args) throws Exception {
String text = “NiuYueYue I Love You！”; // 二维码内容
int width = 300; // 二维码图片宽度
int height = 300; // 二维码图片高度
String format = “gif”;// 二维码的图片格式

    Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();      hints.put(EncodeHintType.CHARACTER_SET, "utf-8");   // 内容所使用字符集编码      BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);      // 生成二维码      File outputFile = new File("d:" + File.separator + "new.gif");      MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);  }  

}

本文出自 http://tec.5lulu.com/detail/110d4n2ehcg9a857d.html