前言
本文是通过google.zxing生成的二维码
兄弟篇（使用QRCode）：java代码生成二维码（一）
源码地址：点我下载源码 （私聊免费获取）
JAR包
只给代码，不给jar包就是耍流氓n(*≧▽≦*)n
产生二维码需要用到jar包：
链接：点我下载
密码：wfvl
生成图片的接口
package a; 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; public class MatrixToImageWriter { private static final int RED = 0xFFDC143C; 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) ? RED : 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); } } }
测试
package a; 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 Test { public static void main(String[] args) throws Exception{ String text = "https://blog.csdn.net/qq_26230421";//二维码的内容 int width = 400; int height = 400; String format = "png"; Hashtable hints= new Hashtable(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height,hints); File outputFile = new File("D:/shuchu.png"); MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); System.out.println("It is ok!"); } }
