change - 打印工具类去除小黑点

hw-modules/hw-printer/src/main/java/com/hw/printer/utils/HwPrintUtil.java

@@ -1,5 +1,10 @@
 package com.hw.printer.utils;
 
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.WriterException;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.qrcode.QRCodeWriter;
 import com.hw.common.core.exception.ServiceException;
 import com.hw.printer.api.domain.vo.PrintContentVo;
 import com.itextpdf.text.Document;
@@ -17,6 +22,7 @@ import org.springframework.stereotype.Component;
 import javax.annotation.PostConstruct;
 import javax.print.PrintService;
 import javax.print.PrintServiceLookup;
+import java.awt.image.BufferedImage;
 import java.awt.print.*;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
@@ -24,6 +30,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 
 /**
@@ -189,22 +196,53 @@ public class HwPrintUtil {
         return null;
     }
 
-    private static void setImage(AcroFields form, PdfStamper stamper, String fieldName, String fieldValue) throws DocumentException {
-        //获取位置(左上右下)
+    private static void setImage(AcroFields form, PdfStamper stamper, String fieldName, String fieldValue) throws DocumentException, WriterException, IOException {
+        // 获取位置(左上右下)
         AcroFields.FieldPosition fieldPosition = form.getFieldPositions(fieldName).get(0);
-        // 绘制二维码
-        float width = fieldPosition.position.getTop() - fieldPosition.position.getBottom();
-        BarcodeQRCode pdf417 = new BarcodeQRCode(fieldValue, (int) width, (int) width, null);
-        // 生成二维码图像
-        Image image128 = pdf417.getImage();
-        // 条码位置
-        image128.setAbsolutePosition(fieldPosition.position.getLeft() + (fieldPosition.position.getRight() - fieldPosition.position.getLeft() - width) / 2
-                , fieldPosition.position.getBottom());
+
+        // 计算字段的宽度和高度
+        float fieldWidth = fieldPosition.position.getRight() - fieldPosition.position.getLeft();
+        float fieldHeight = fieldPosition.position.getTop() - fieldPosition.position.getBottom();
+
+        // 生成二维码
+        QRCodeWriter qrCodeWriter = new QRCodeWriter();
+        Map<EncodeHintType, Object> hints = new HashMap<>();
+        hints.put(EncodeHintType.MARGIN, 0);
+        BitMatrix bitMatrix = qrCodeWriter.encode(fieldValue, BarcodeFormat.QR_CODE, (int) fieldWidth, (int) fieldHeight, hints);
+
+        // 将 BitMatrix 转换为 BufferedImage
+        BufferedImage bufferedImage = toBufferedImage(bitMatrix);
+
+        // 将 BufferedImage 转换为 iText Image
+        Image image128 = Image.getInstance(bufferedImage, null);
+
+        // 扩大图像尺寸为原来的两倍
+        float imageWidth = image128.getWidth();
+        float imageHeight = image128.getHeight();
+        image128.scaleAbsolute(imageWidth, imageHeight);
+
+        // 设置图像的位置
+        float posX = fieldPosition.position.getLeft() + (fieldWidth - imageWidth) / 2;
+        float posY = fieldPosition.position.getBottom() - (imageHeight - fieldHeight) / 2;
+        image128.setAbsolutePosition(posX, posY);
+
         // 获取PDF的第一页
         PdfContentByte cb = stamper.getOverContent(1);
         cb.addImage(image128);
     }
 
+    private static BufferedImage toBufferedImage(BitMatrix matrix) {
+        int width = matrix.getWidth();
+        int height = matrix.getHeight();
+        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        for (int x = 0; x < width; x++) {
+            for (int y = 0; y < height; y++) {
+                image.setRGB(x, y, matrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
+            }
+        }
+        return image;
+    }
+
     private static void setCheckBox(AcroFields form, PdfStamper stamper, String fieldName) throws DocumentException, IOException {
         // 获取复选框位置以便在旁边绘制勾号
         Rectangle boxRect = form.getFieldPositions(fieldName).get(0).position;
@@ -296,10 +334,10 @@ public class HwPrintUtil {
             //设置打印方向 PORTRAIT 竖向  REVERSE_LANDSCAPE 横向
             pageFormat.setOrientation(PageFormat.PORTRAIT);
             Paper paper = new Paper();
-            // 纸的大小
-            paper.setSize(221, 200);
+            // TODO 纸的大小
+            paper.setSize(160, 140);
             // Print 区域
-            paper.setImageableArea(2, -15, 221, 200);
+            paper.setImageableArea(2, -15, 160, 140);
             pageFormat.setPaper(paper);
             Book book = new Book();
             PDFPrintable printable = new PDFPrintable(document, Scaling.SCALE_TO_FIT);