Barcode4j 使用方法 1->using the JavaBean API public static void generateCode128Barcode(File file, String code) { Code128Bean bean = new Code128Bean(); final int dpi = 150; //barcode bean.setModuleWidth(0.21); bean.setHeight(15); bean.doQuietZone(true); bean.setQuietZone(2);//两边空白区 //human-readable bean.setFontName("Helvetica"); bean.setFontSize(3); bean.setMsgPosition(HumanReadablePlacement.HRP_BOTTOM); OutputStream out = null; try { out = new FileOutputStream(file); BitmapCanvasProvider canvas = new BitmapCanvasProvider(out, "image/jpeg", dpi, BufferedImage.TYPE_BYTE_BINARY, true, 0); bean.generateBarcode(canvas, code); canvas.finish(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (out != null) out.close(); } catch (IOException e) { e.printStackTrace(); } } } public static void generateCode39Barcode(int mode, File file, String code) { Code39Bean bean = new Code39Bean(); // Dot Per Inch 每英寸所打印的点数或线数，用来表示打印机打印分辨率。 final int dpi = 150; // bean.setModuleWidth(UnitConv.in2mm(1.0f / dpi)); bean.setModuleWidth(0.2); bean.setHeight(15); bean.setWideFactor(3); bean.doQuietZone(true); OutputStream out = null; try { out = new FileOutputStream(file); if (mode == 0) { BitmapCanvasProvider canvas = new BitmapCanvasProvider(out, "image/jpeg", dpi, BufferedImage.TYPE_BYTE_GRAY, false, 0); bean.generateBarcode(canvas, code); canvas.finish(); } else { BitmapCanvasProvider canvas = new BitmapCanvasProvider(dpi, BufferedImage.TYPE_BYTE_GRAY, true, 0); bean.generateBarcode(canvas, code); canvas.finish(); BufferedImage barcodeImage = canvas.getBufferedImage(); ImageIO.write(barcodeImage, "jpg", out); } } catch (Exception e) { e.printStackTrace(); } finally { try { if (out != null) out.close(); } catch (IOException e) { e.printStackTrace(); } } } 2...
