java 生成一维码

小咪咪 2022-10-29 07:57 125阅读 0赞

package com.Util;
    
    import com.google.zxing.BarcodeFormat;
    import com.google.zxing.BinaryBitmap;
    import com.google.zxing.DecodeHintType;
    import com.google.zxing.LuminanceSource;
    import com.google.zxing.MultiFormatReader;
    import com.google.zxing.MultiFormatWriter;
    import com.google.zxing.Result;
    import com.google.zxing.WriterException;
    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 org.springframework.stereotype.Service;
    import javax.imageio.ImageIO;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.FileOutputStream;
    import java.util.HashMap;
    import java.util.Map;
    public class BarCodeUtil { 
        /** * generateCode 根据code生成相应的一维码 * @param file 一维码目标文件 * @param code 一维码内容 * @param width 图片宽度 * @param height 图片高度 */
        public void generateCode(File file, String code, int width, int height) { 
            //定义位图矩阵BitMatrix
            BitMatrix matrix = null;
            try { 
                // 使用code_128格式进行编码生成100*25的条形码
                MultiFormatWriter writer = new MultiFormatWriter();
                matrix = writer.encode(code,BarcodeFormat.CODE_128, width, height, null);
                //matrix = writer.encode(code,BarcodeFormat.EAN_13, width, height, null);
            } catch (WriterException e) { 
                e.printStackTrace();
            }
            //将位图矩阵BitMatrix保存为图片
            try (FileOutputStream outStream = new FileOutputStream(file)) { 
                ImageIO.write(MatrixToImageWriter.toBufferedImage(matrix), "png",
                        outStream);
                outStream.flush();
            } catch (Exception e) { 
                e.printStackTrace();
            }
        }
    
        /** * readCode 读取一张一维码图片 * @param file 一维码图片名字 */
        public static void readCode(File file){ 
            try { 
                BufferedImage image = ImageIO.read(file);
                if (image == null) { 
                    return;
                }
                LuminanceSource source = new BufferedImageLuminanceSource(image);
                BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    
                Map<DecodeHintType, Object> hints = new HashMap<>();
                hints.put(DecodeHintType.CHARACTER_SET, "GBK");
                hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
                hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
    
                Result result = new MultiFormatReader().decode(bitmap, hints);
                System.out.println("条形码内容: "+result.getText());
            } catch (Exception e) { 
                e.printStackTrace();
            }
        }
        public static void main(String[] args) throws Exception { 
            generateCode(new File("D:/aa/1dcode.png"), "123456789012", 500, 250);
            readCode(new File("1dcode.png"));
        }
    }

直接上代码，生成一维码，亲测可用