对比新文件 |
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| | | package com.gk.firework.Domain.Utils; |
| | | |
| | | import com.google.zxing.BarcodeFormat; |
| | | import com.google.zxing.EncodeHintType; |
| | | import com.google.zxing.MultiFormatWriter; |
| | | import com.google.zxing.WriterException; |
| | | import com.google.zxing.common.BitMatrix; |
| | | import sun.misc.BASE64Encoder; |
| | | |
| | | import javax.imageio.ImageIO; |
| | | import java.awt.image.BufferedImage; |
| | | import java.io.ByteArrayOutputStream; |
| | | import java.io.File; |
| | | import java.io.IOException; |
| | | import java.io.OutputStream; |
| | | import java.util.Hashtable; |
| | | |
| | | public class MatrixToImageWriter { |
| | | private static final int BLACK = 0xFF000000; |
| | | private static final int WHITE = 0xFFFFFFFF; |
| | | |
| | | private MatrixToImageWriter() { |
| | | } |
| | | |
| | | private 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; |
| | | } |
| | | private 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); |
| | | } |
| | | } |
| | | private 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); |
| | | } |
| | | } |
| | | |
| | | public static String getBase64Img(String text) throws IOException, WriterException { |
| | | // 二维码图片宽度 |
| | | int width = 40; |
| | | // 二维码图片高度 |
| | | int height = 40; |
| | | // 二维码的图片格式 |
| | | String format = "jpg"; |
| | | Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(); |
| | | // 内容所使用字符集编码 |
| | | hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); |
| | | |
| | | BitMatrix bitMatrix = new MultiFormatWriter().encode(text, |
| | | BarcodeFormat.CODE_128, width, height, hints); |
| | | /*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.jpg"); |
| | | MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); |
| | | |
| | | ByteArrayOutputStream pngOutputStream = new ByteArrayOutputStream(); |
| | | MatrixToImageWriter.writeToStream(bitMatrix, "PNG", pngOutputStream); |
| | | byte[] pngData = pngOutputStream.toByteArray(); |
| | | BASE64Encoder encoder = new BASE64Encoder(); |
| | | String png_base64 = encoder.encodeBuffer(pngData).trim(); |
| | | png_base64 = png_base64.replaceAll("\n", "").replaceAll("\r", ""); |
| | | return png_base64; |
| | | } |
| | | } |
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