From 2cb82878fd01257c7b0ed93ba9ad5d837271dccf Mon Sep 17 00:00:00 2001 From: jianjun Date: Fri, 18 Mar 2022 14:20:10 +0800 Subject: [PATCH] =?UTF-8?q?=E5=B0=8F=E5=8C=BA=E4=BA=8C=E7=BB=B4=E7=A0=81?= =?UTF-8?q?=E7=94=9F=E6=88=90?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- epmet-commons/epmet-commons-tools/pom.xml | 11 ++ .../commons/tools/utils/BarcodeUtils.java | 177 ++++++++++++++++++ .../epmet/controller/AgencyController.java | 4 +- 3 files changed, 190 insertions(+), 2 deletions(-) create mode 100644 epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/utils/BarcodeUtils.java diff --git a/epmet-commons/epmet-commons-tools/pom.xml b/epmet-commons/epmet-commons-tools/pom.xml index c551a68db1..7542899ad0 100644 --- a/epmet-commons/epmet-commons-tools/pom.xml +++ b/epmet-commons/epmet-commons-tools/pom.xml @@ -166,6 +166,17 @@ transmittable-thread-local 2.12.4 + + com.google.zxing + core + 3.3.2 + + + + com.google.zxing + javase + 3.3.2 + diff --git a/epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/utils/BarcodeUtils.java b/epmet-commons/epmet-commons-tools/src/main/java/com/epmet/commons/tools/utils/BarcodeUtils.java new file mode 100644 index 0000000000..555643e9e1 --- /dev/null +++ b/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 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"); + } + + } + + +} + diff --git a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/controller/AgencyController.java b/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/controller/AgencyController.java index 26db2c084f..a482511982 100644 --- a/epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/controller/AgencyController.java +++ b/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 { } } -} \ No newline at end of file +}