From daa697719eb0ddfd170f1ab94c5422a4f5b93951 Mon Sep 17 00:00:00 2001
From: zhaoxiaohao <279049017@qq.com>
Date: Fri, 18 Sep 2020 14:36:54 +0800
Subject: [PATCH] Merge branch 'dev'
---
kidgrow-commons/kidgrow-common-spring-boot-starter/src/main/java/com/kidgrow/common/utils/QRCodeUtil.java | 138 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 138 insertions(+), 0 deletions(-)
diff --git a/kidgrow-commons/kidgrow-common-spring-boot-starter/src/main/java/com/kidgrow/common/utils/QRCodeUtil.java b/kidgrow-commons/kidgrow-common-spring-boot-starter/src/main/java/com/kidgrow/common/utils/QRCodeUtil.java
new file mode 100644
index 0000000..29762ba
--- /dev/null
+++ b/kidgrow-commons/kidgrow-common-spring-boot-starter/src/main/java/com/kidgrow/common/utils/QRCodeUtil.java
@@ -0,0 +1,138 @@
+package com.kidgrow.common.utils;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.MultiFormatWriter;
+import com.google.zxing.WriterException;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
+import sun.misc.BASE64Encoder;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Hashtable;
+
+import static com.google.zxing.client.j2se.MatrixToImageConfig.BLACK;
+import static com.google.zxing.client.j2se.MatrixToImageConfig.WHITE;
+
+/**
+ * @Author: dougang
+ * @Description:
+ * @Date: create in 2020/6/19 10:02
+ */
+public class QRCodeUtil {
+
+ /**
+ * 生成二维码
+ *
+ * @param contents
+ * @param width
+ * @param height
+ * @param level 0:M,1:L,2:H,3:Q
+ * @return
+ */
+ public static String creatRrCode(String contents, int width, int height, int level) {
+ String binary = null;
+ Hashtable hints = new Hashtable();
+ hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
+ switch (level) {
+ case 0:
+ hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
+ break;
+ case 1:
+ hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
+ break;
+ case 2:
+ hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
+ break;
+ case 3:
+ hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);
+ break;
+ default:
+ break;
+ }
+
+ try {
+ BitMatrix bitMatrix = new MultiFormatWriter().encode(
+ contents, BarcodeFormat.QR_CODE, width, height, hints);
+ // 读取文件转换为字节数组
+ ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+ BufferedImage image = toBufferedImage(bitMatrix);
+ //切白边
+ image = deleteWhite(bitMatrix);
+
+ //转换成png格式的IO流
+ ImageIO.write(image, "png", out);
+ byte[] bytes = out.toByteArray();
+
+ // 将字节数组转为二进制
+ BASE64Encoder encoder = new BASE64Encoder();
+ binary = "data:image/png;base64," + encoder.encodeBuffer(bytes).trim();
+ } catch (WriterException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (IOException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ return binary;
+ }
+
+ /**
+ * image流数据处理
+ *
+ * @author ianly
+ */
+ private 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) ? 0xFF000000 : 0xFFFFFFFF);
+ }
+ }
+
+ return image;
+ }
+
+ /**
+ * 切白边
+ *
+ * @param matrix
+ * @return
+ */
+ private static BufferedImage deleteWhite(BitMatrix matrix) {
+ int[] rec = matrix.getEnclosingRectangle();
+ int resWidth = rec[2] + 1;
+ int resHeight = rec[3] + 1;
+
+ BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
+ resMatrix.clear();
+ for (int i = 0; i < resWidth; i++) {
+ for (int j = 0; j < resHeight; j++) {
+ if (matrix.get(i + rec[0], j + rec[1]))
+ resMatrix.set(i, j);
+ }
+ }
+
+ int width = resMatrix.getWidth();
+ int height = resMatrix.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, resMatrix.get(x, y) ? BLACK : WHITE);
+ }
+ }
+ return image;
+ }
+
+ public static void main(String[] args) {
+ String binary = QRCodeUtil.creatRrCode("http://192.168.2.146:8089/upload/saasmobile.html?hospitolId=1&departmentId=1&doctorId=1278159153159888898&childid=3001&diagnosticId=300101&puuid=dbd8b1c0-bdc5-11ea-b37d-1b33e9f3fd18", 200, 200, 2);
+ System.out.println(binary);
+ }
+}
--
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