小区二维码生成

epmet-commons/epmet-commons-tools/pom.xml

@@ -166,6 +166,17 @@
             <artifactId>transmittable-thread-local</artifactId>
             <version>2.12.4</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.zxing</groupId>
+            <artifactId>core</artifactId>
+            <version>3.3.2</version>
+        </dependency>
+        <!-- https://mvnrepository.com/artifact/com.google.zxing/javase -->
+        <dependency>
+            <groupId>com.google.zxing</groupId>
+            <artifactId>javase</artifactId>
+            <version>3.3.2</version>
+        </dependency>
     </dependencies>
 
     <build>

epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/utils/BarcodeUtils.java

@@ -0,0 +1,177 @@
+package com.epmet.commons.tools.utils;
+
+/**
+ * desc:
+ *
+ * @author: LiuJanJun
+ * @date: 2022/3/18 11:57 上午
+ * @version: 1.0
+ */
+
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.MultiFormatWriter;
+import com.google.zxing.WriterException;
+import com.google.zxing.client.j2se.MatrixToImageConfig;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.common.CharacterSetECI;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.util.HashMap;
+
+/**
+ * Author  程鹏
+ * Date： 2021/08/27 16:01
+ * Description:二维码生成工具类
+ */
+public class BarcodeUtils {
+    /**
+     * 二维码颜色 默认是黑色
+     */
+    private static final Color QRCOLOR = Color.black;
+    /**
+     * 背景颜色
+     */
+    private static final Color BGWHITE = Color.white;
+    public static final int WIDTH = 360;
+    public static final int HEIGHT = 512;
+    public static final int MARGIN = 2;
+    public static final int FONTSIZE = 20;
+
+
+    /**
+     * // 二维码生成
+     *
+     * @param contents 说明
+     * @return BufferedImage
+     * @throws Exception
+     */
+    public static BufferedImage drawQRImage(String pressText, String contents) throws Exception {
+        BufferedImage qRImage = null;
+        if (contents == null || "".equals(contents)) {
+            throw new Exception("content说明不能为空");
+        }
+        // 二维码参数设置
+        HashMap<EncodeHintType, Object> hints = new HashMap<>();
+        hints.put(EncodeHintType.CHARACTER_SET, CharacterSetECI.UTF8); // 编码设置
+        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); // 安全等级，最高h
+        hints.put(EncodeHintType.MARGIN, MARGIN); // 设置margin=0-10
+
+        // 二维码图片的生成
+        BarcodeFormat format = BarcodeFormat.QR_CODE;
+        // 创建矩阵容器
+        BitMatrix matrix = null;
+        try {
+            matrix = new MultiFormatWriter().encode(contents, format, WIDTH, HEIGHT, hints);
+        } catch (WriterException e) {
+            e.printStackTrace();
+        }
+
+        // 设置矩阵转为图片的参数
+        MatrixToImageConfig toImageConfig = new MatrixToImageConfig(QRCOLOR.getRGB(), BGWHITE.getRGB());
+
+        // 矩阵转换图像
+        qRImage = MatrixToImageWriter.toBufferedImage(matrix, toImageConfig);
+        return pressText(pressText, qRImage);
+    }
+
+    /**
+     * @param pressText 二维码下方插入文字
+     * @param image     需要添加文字的图片
+     * @为图片添加文字
+     */
+    private static BufferedImage pressText(String pressText, BufferedImage image) throws Exception {
+
+        BufferedImage outImage = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
+        //计算文字开始的位置
+        //x开始的位置：（图片宽度-字体大小*字的个数）/2
+        int startX = (WIDTH - (FONTSIZE * pressText.length())) / 2;
+        //y开始的位置：图片高度-（图片高度-图片宽度）/2
+        int startY = HEIGHT - (HEIGHT - WIDTH) / 2;
+
+        int imageW = outImage.getWidth();
+        int imageH = outImage.getHeight();
+        Graphics2D g = outImage.createGraphics();
+        g.drawImage(image, 0, 0, imageW, imageH, null);
+        g.setColor(QRCOLOR);
+        g.setFont(new Font("微软雅黑", Font.BOLD, FONTSIZE));
+        g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+        g.setBackground(Color.white);
+//        获取文字数量  按照字节展示
+        int size = pressText.getBytes("GBK").length;
+//        获取一行最多能容纳多少文字   按照文字字节展示
+        int maxSize = (WIDTH / FONTSIZE - 2) * 2;
+        if (size > maxSize) {
+            int v = size % maxSize;
+            for (int a = 0; a < (size / maxSize); a++) {
+                String s = outStringByByte(pressText, maxSize);
+                g.drawString(s, (WIDTH - (FONTSIZE * (WIDTH / FONTSIZE - 2))) / 2, startY);
+                pressText = pressText.substring(s.length(), pressText.length());
+                startY = startY + 30;
+            }
+            if (v != 0) {
+                g.drawString(pressText, (WIDTH - (FONTSIZE * v)) / 2, startY);
+            }
+        } else {
+            g.drawString(pressText, (WIDTH - ((pressText.getBytes("GBK").length) / 2) * FONTSIZE) / 2, startY);
+        }
+
+        g.dispose();
+        return outImage;
+    }
+
+
+    /**
+     * 保存二维码图片到本地
+     *
+     * @param contents
+     * @throws Exception
+     */
+    public static void createImg(String pressText, String contents, String filename, String filePath) throws Exception {
+        BufferedImage qRImageWithLogo = drawQRImage(pressText, contents);
+        // 写入返回
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        ImageIO.write(qRImageWithLogo, "jpg", baos);
+        //图片类型
+        String imageType = "jpg";
+        //生成二维码存放文件
+        File file = new File(filePath + filename + ".jpg");
+        if (!file.exists()) {
+            file.mkdirs();
+        }
+        ImageIO.write(qRImageWithLogo, imageType, file);
+        baos.close();
+    }
+
+
+    private static String outStringByByte(String str, int len) throws IOException {
+        byte[] btf = str.getBytes("gbk");
+        int count = 0;
+
+        for (int j = len - 1; j >= 0; j--) {
+            if (btf[j] < 0) {
+                count++;
+            } else {
+                break;
+            }
+        }
+
+        if (count % 2 == 0) {
+            return new String(btf, 0, len, "gbk");
+        } else {
+            return new String(btf, 0, len - 1, "gbk");
+        }
+
+    }
+
+
+}
+

epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/controller/AgencyController.java

@@ -382,7 +382,7 @@ public class AgencyController {
     }
 
     public static void write() throws IOException, WriterException {
-        String filePath = "/Volumes/self";
+        String filePath = "/Users/liujianjun/Downloads";
         String fileName = "qr.png";
 //二维码内容场景一：json数据
         JSONObject json = new JSONObject();
@@ -414,4 +414,4 @@ public class AgencyController {
         }
     }
 
-}
+}