angle_xin
2016-08-23 16:51
我表示找不到这个类 MatrixToImageWritoter 我的jar包里没有?还是要单独导入一个实体类?网上的实体类又没有topath的方法...... 求助
还需要导入那个jar包啊!?
你是jar包没有导入成功吧 我按着老师做的 没有问题
这个是我写的 你可以看看是不是这样
package com.imooc.zxing; import com.google.zxing.*; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.client.j2se.MatrixToImageWriter; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.File; import java.nio.file.Path; import java.util.HashMap; /** * 生成二维码 */ public class CreateQRCode { public static void main(String[] args) { createQRCode(); // readQRCode(); } private static void readQRCode() { try { MultiFormatReader formatReader = new MultiFormatReader(); File file = new File("e:/image.png"); BufferedImage image = null; image = ImageIO.read(file); HashMap hashMap = new HashMap(); hashMap.put(EncodeHintType.CHARACTER_SET, "utf-8"); BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image))); Result result = formatReader.decode(binaryBitmap, hashMap); System.out.println("解析结果:"+result.toString()); System.out.println("二维码格式类型:"+result.getBarcodeFormat()); System.out.println("二维码文本:"+result.getText()); } catch (Exception e) { e.printStackTrace(); } } private static void createQRCode() { int width = 300; int height = 300; String format = "png"; String content = "www.baidu.com"; //定义二维码的参数 HashMap hashMap = new HashMap(); hashMap.put(EncodeHintType.CHARACTER_SET, "utf-8"); hashMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M); hashMap.put(EncodeHintType.MARGIN, 5); try { BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height); Path file = new File("e:/img.png").toPath(); MatrixToImageWriter.writeToPath(bitMatrix, format, file); } catch (Exception e) { e.printStackTrace(); } } }
Java生成二维码
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