本文主要是介绍Zxing2.2 生成QR二维码和一维码(条码),希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
在http://code.google.com/p/zxing/downloads/list下载zxing压缩包Zxing-2.2,
使用core包
代码如下:
- package cn.wuhongbox.common.javaQR;
- import java.awt.image.BufferedImage;
- import java.io.File;
- import java.io.IOException;
- import java.util.Hashtable;
- import javax.imageio.ImageIO;
- import com.google.zxing.BarcodeFormat;
- import com.google.zxing.BinaryBitmap;
- import com.google.zxing.DecodeHintType;
- import com.google.zxing.EncodeHintType;
- import com.google.zxing.LuminanceSource;
- import com.google.zxing.MultiFormatReader;
- import com.google.zxing.MultiFormatWriter;
- import com.google.zxing.Result;
- import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
- import com.google.zxing.common.BitMatrix;
- import com.google.zxing.common.HybridBinarizer;
- public class QRUtil
- {
- private static final String CODE = "utf-8";
- private static final int BLACK = 0xff000000;
- private static final int WHITE = 0xFFFFFFFF;
- /**
- * 生成RQ二维码
- *
- * @author wuhongbo
- * @param str
- * 内容
- * @param height
- * 高度(px)
- *
- */
- public static BufferedImage getRQ(String str, Integer height)
- {
- if (height == null || height < 100)
- {
- height = 200;
- }
- try
- {
- // 文字编码
- Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
- hints.put(EncodeHintType.CHARACTER_SET, CODE);
- BitMatrix bitMatrix = new MultiFormatWriter().encode(str,
- BarcodeFormat.QR_CODE, height, height, hints);
- return toBufferedImage(bitMatrix);
- // 输出方式
- // 网页
- // ImageIO.write(image, "png", response.getOutputStream());
- // 文件
- // ImageIO.write(image, "png", file);
- }
- catch (Exception e)
- {
- e.printStackTrace();
- }
- return null;
- }
- /**
- * 生成一维码(128)
- *
- * @author wuhongbo
- * @param str
- * @param width
- * @param height
- * @return
- */
- public static BufferedImage getBarcode(String str, Integer width,
- Integer height)
- {
- if (width == null || width < 200)
- {
- width = 200;
- }
- if (height == null || height < 50)
- {
- height = 50;
- }
- try
- {
- // 文字编码
- Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
- hints.put(EncodeHintType.CHARACTER_SET, CODE);
- BitMatrix bitMatrix = new MultiFormatWriter().encode(str,
- BarcodeFormat.CODE_128, width, height, hints);
- return toBufferedImage(bitMatrix);
- }
- catch (Exception e)
- {
- e.printStackTrace();
- }
- return null;
- }
- /**
- * 生成二维码,写到文件中
- *
- * @author wuhongbo
- * @param str
- * @param height
- * @param file
- * @throws IOException
- */
- public static void getRQWriteFile(String str, Integer height, File file)
- throws IOException
- {
- BufferedImage image = getRQ(str, height);
- ImageIO.write(image, "png", file);
- }
- /**
- * 生成一维码,写到文件中
- *
- * @author wuhongbo
- * @param str
- * @param height
- * @param file
- * @throws IOException
- */
- public static void getBarcodeWriteFile(String str, Integer width,
- Integer height, File file) throws IOException
- {
- BufferedImage image = getBarcode(str, width, height);
- ImageIO.write(image, "png", file);
- }
- /**
- * 转换成图片
- *
- * @author wuhongbo
- * @param matrix
- * @return
- */
- private static BufferedImage toBufferedImage(BitMatrix matrix)
- {
- int width = matrix.getWidth();
- int height = matrix.getHeight();
- BufferedImage image = new BufferedImage(width, height,
- BufferedImage.TYPE_INT_ARGB);
- 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;
- }
- /**
- * 解码(二维、一维均可)
- */
- public static String read(File file)
- {
- BufferedImage image;
- try
- {
- if (file == null || file.exists() == false)
- {
- throw new Exception(" File not found:" + file.getPath());
- }
- image = ImageIO.read(file);
- LuminanceSource source = new BufferedImageLuminanceSource(image);
- BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
- Result result;
- // 解码设置编码方式为:utf-8,
- Hashtable hints = new Hashtable();
- hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
- result = new MultiFormatReader().decode(bitmap, hints);
- return result.getText();
- }
- catch (Exception e)
- {
- e.printStackTrace();
- }
- return null;
- }
- public static void main(String[] args) throws Exception
- {
- File file = new File("c://1.png");
- // RQUtil.getRQwriteFile("吴宏波中华人民共和国", 200, file);
- // code39 大写字母、数字、-、
- // code128
- QRUtil.getBarcodeWriteFile("12345678900-J_j", null,null, file);
- System.out.println("-----成生成功----");
- System.out.println();
- String s = QRUtil.read(file);
- System.out.println("-----解析成功----");
- System.out.println(s);
- }
- }
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