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+package com.iotechn.unimall.data.util;
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+
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+import com.aliyun.oss.OSSClient;
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+import com.aliyun.oss.model.ObjectMetadata;
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+import com.aliyun.oss.model.PutObjectRequest;
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+import com.google.zxing.BarcodeFormat;
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+import com.google.zxing.EncodeHintType;
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+import com.google.zxing.client.j2se.MatrixToImageWriter;
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+import com.google.zxing.common.BitMatrix;
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+import com.google.zxing.qrcode.QRCodeWriter;
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+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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+import lombok.Getter;
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+import lombok.SneakyThrows;
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+import org.apache.http.entity.ContentType;
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+import org.springframework.beans.factory.InitializingBean;
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+import org.springframework.beans.factory.annotation.Autowired;
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+import org.springframework.beans.factory.annotation.Value;
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+import org.springframework.core.io.ClassPathResource;
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+import org.springframework.mock.web.MockMultipartFile;
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+import org.springframework.stereotype.Component;
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+import org.springframework.util.StringUtils;
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+import org.springframework.web.multipart.MultipartFile;
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+import sun.font.FontDesignMetrics;
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+
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+import javax.imageio.ImageIO;
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+import java.awt.*;
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+import java.awt.font.FontRenderContext;
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+import java.awt.font.LineMetrics;
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+import java.awt.geom.RoundRectangle2D;
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+import java.awt.image.BufferedImage;
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+import java.io.*;
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+import java.nio.charset.StandardCharsets;
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+import java.nio.file.FileSystems;
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+import java.nio.file.Path;
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+import java.util.HashMap;
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+import java.util.Hashtable;
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+import java.util.Properties;
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+
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+/**
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+ * @Author:chengchangjiang
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+ * @Description: 二维码Util类
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+ * @Date:Created in 9:38 2021-09-03
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+ */
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+@Component
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+public class QRCodeUtil implements InitializingBean {
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+
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+ @Value("${oss.aliyun.oss.basekUrl}")
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+ private String baseUrl;
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+ @Value("${oss.aliyun.oss.bucket}")
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+ private String bucket;
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+ @Autowired
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+ private OSSClient ossClient;
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+ @Value("${oss.aliyun.oss.endpoint}")
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+ private String endpoint;
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+
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+ private String host;
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+ @Override
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+ public void afterPropertiesSet() throws Exception {
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+ host = "http://" + bucket + "." + endpoint;
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+ }
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+
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+ /***
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+ * 生成二维码图片并上传OSS
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+ * @param text 二维码内容
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+ * @param width 宽度
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+ * @param height 高度
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+ * @param type 类型
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+ * @param name 图片名字
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+ * @return
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+ */
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+ public String generateQRCodeImage(String text, int width, int height,String type,String name){
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+ try {
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+ QRCodeWriter qrCodeWriter = new QRCodeWriter();
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+ Hashtable<EncodeHintType, Object> hints = new Hashtable();
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+ hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
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+ BitMatrix bitMatrix = qrCodeWriter.encode(type+"="+text, BarcodeFormat.QR_CODE, width, height,hints);
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+
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+ File file = new File( new String(("templates" + File.separator + name+".png").getBytes(StandardCharsets.UTF_8), StandardCharsets.UTF_8));
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+ if(!file.exists()){
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+ boolean flag = file.mkdirs();
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+ }
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+ Path path = FileSystems.getDefault().getPath(file.getAbsoluteFile().getPath());
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+
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+ MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);
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+
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+ FileInputStream fileInputStream = new FileInputStream(file.getAbsoluteFile());
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+
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+ MultipartFile multipartFile = new MockMultipartFile( ContentType.APPLICATION_OCTET_STREAM.toString(), fileInputStream);
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+ String result = upload(multipartFile,name);
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+ file.delete();
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+ return result;
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+ }
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+ catch (Exception e){
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+ System.out.println("二维码异常："+e.toString());
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+ return "error";
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+ }
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+ }
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+ /**
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+ * 后台通过服务器间接传文件
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+ * @param file
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+ * @return
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+ * @throws IOException
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+ */
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+ public String upload(MultipartFile file, String sendCarNo) throws IOException {
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+ ObjectMetadata objectMetadata = new ObjectMetadata();
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+ objectMetadata.setContentLength(file.getSize());
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+ objectMetadata.setContentType(file.getContentType());
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+ PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, "QRCode/" +sendCarNo+".png", file.getInputStream(), objectMetadata);
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+ ossClient.putObject(putObjectRequest);
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+ return baseUrl + "QRCode/" + sendCarNo+".png";
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+ }
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+
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+ private static final int QRCODE_SIZE = 320; // 二维码尺寸，宽度和高度均是320
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+ private static final String FORMAT_TYPE = "PNG"; // 二维码图片类型
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+
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+
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+// //1、生成带logo和底部文字得二维码
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+// @SneakyThrows
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+// @GetMapping("/getQrCode1")
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+// public void getQrCode1(HttpServletResponse response) {
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+// ServletOutputStream os = response.getOutputStream();
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+// BufferedImage bufferedImage = QRCodeUtil.getQRCodeImage("test", "底部文字");
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+// response.setContentType("image/png");
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+// ImageIO.write(bufferedImage,"png",os);
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+// }
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+// //2、生成不带logo和底部文字得二维码
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+// @SneakyThrows
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+// @GetMapping("/getQrCode2")
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+// public void getQrCode2(HttpServletResponse response) {
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+// ServletOutputStream os = response.getOutputStream();
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+// BufferedImage bufferedImage = QRCodeUtil.getQRCodeImage("test", false);
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+// response.setContentType("image/png");
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+// ImageIO.write(bufferedImage,"png",os);
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+// }
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+// //3、生成默认带logo不带底部文字得二维码
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+// @SneakyThrows
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+// @GetMapping("/getQrCode3")
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+// public void getQrCode3(HttpServletResponse response) {
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+// ServletOutputStream os = response.getOutputStream();
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+// BufferedImage bufferedImage = QRCodeUtil.generateQRCodeImage("test");
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+// response.setContentType("image/png");
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+// ImageIO.write(bufferedImage,"png",os);
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+// }
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+// //3、生成不带logo带底部文字得二维码
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+// @SneakyThrows
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+// public getQrCode3(HttpServletResponse response) {
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+// ServletOutputStream os = response.getOutputStream();
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+// BufferedImage bufferedImage = QRCodeUtil.getQRCodeImage("test",false,
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+// "底部文字");
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+// response.setContentType("image/png");
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+// ImageIO.write(bufferedImage,"png",os);
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+// }
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+
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+
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+ /**
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+ * 获取二维码图片
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+ *
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+ * @param dataStr 二维码内容
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+ * @param needLogo 是否需要添加logo
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+ * @param bottomText 底部文字 为空则不显示
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+ * @return
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+ */
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+ @SneakyThrows
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+ public String getQRCodeImage(String dataStr, boolean needLogo, String bottomText ,String name) {
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+ if (dataStr == null) {
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+ throw new RuntimeException("未包含任何信息");
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+ }
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+ HashMap<EncodeHintType, Object> hints = new HashMap<>();
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+ hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); //定义内容字符集的编码
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+ hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L); //定义纠错等级
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+ hints.put(EncodeHintType.MARGIN, 1);
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+ QRCodeWriter qrCodeWriter = new QRCodeWriter();
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+ BitMatrix bitMatrix = qrCodeWriter.encode(dataStr, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);
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+
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+ int width = bitMatrix.getWidth();
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+ int height = bitMatrix.getHeight();
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+ int tempHeight = height;
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+ if (StringUtils.hasText(bottomText)) {
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+ tempHeight = tempHeight + 12;
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+ }
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+ BufferedImage image = new BufferedImage(width, tempHeight, BufferedImage.TYPE_INT_RGB);
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+ for (int x = 0; x < width; x++) {
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+ for (int y = 0; y < height; y++) {
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+ image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
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+ }
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+ }
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+ // 判断是否添加logo
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+ if (needLogo) {
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+ insertLogoImage(image);
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+ }
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+ // 判断是否添加底部文字
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+ if (StringUtils.hasText(bottomText)) {
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+ addFontImage(image, bottomText);
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+ }
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+
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+ File file = new File( new String(("templates" + File.separator + name+".png").getBytes(StandardCharsets.UTF_8), StandardCharsets.UTF_8));
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+ if(!file.exists()){
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+ boolean flag = file.mkdirs();
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+ }
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+ Path path = FileSystems.getDefault().getPath(file.getAbsoluteFile().getPath());
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+
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+// ByteArrayOutputStream out = new ByteArrayOutputStream();
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+// ImageIO.write(image,"png",path);
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+// MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);
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+
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+ //创建一个ByteArrayOutputStream
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+ ByteArrayOutputStream os = new ByteArrayOutputStream();
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+ //把BufferedImage写入ByteArrayOutputStream
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+ ImageIO.write(image, "png", os);
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+ //ByteArrayOutputStream转成InputStream
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+ InputStream input = new ByteArrayInputStream(os.toByteArray());
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+ //InputStream转成MultipartFile
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+ MultipartFile multipartFile =new MockMultipartFile("file", "file.jpg", "text/plain", input);
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+
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+// FileInputStream fileInputStream = new FileInputStream(file.getAbsoluteFile());
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+// MultipartFile multipartFile = new MockMultipartFile( ContentType.APPLICATION_OCTET_STREAM.toString(), fileInputStream);
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+ String result = upload(multipartFile,name);
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+ file.delete();
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+ return result;
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+ }
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+
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+ /**
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+ * 插入logo图片
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+ *
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+ * @param source 二维码图片
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+ * @throws Exception
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+ */
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+ private static void insertLogoImage(BufferedImage source) throws Exception {
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+ // 默认logo放于resource/static/image目录下
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+ ClassPathResource classPathResource = new ClassPathResource("static/image/logo.png");
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+ InputStream inputStream = classPathResource.getInputStream();
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+ if (inputStream == null || inputStream.available() == 0) {
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+ return;
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+ }
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+ Image src = ImageIO.read(inputStream);
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+ int width = 30;
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+ int height = 30;
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+
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+ Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH);
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+ BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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+ Graphics g = tag.getGraphics();
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+ g.drawImage(image, 0, 0, null); // 绘制缩小后的图
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+ g.dispose();
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+ src = image;
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+
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+ // 插入LOGO
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+ Graphics2D graph = source.createGraphics();
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+ int x = (QRCODE_SIZE - width) / 2;
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+ int y = (QRCODE_SIZE - height) / 2;
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+ graph.drawImage(src, x, y, width, height, null);
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+ Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
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+ graph.setStroke(new BasicStroke(3f));
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+ graph.draw(shape);
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+ graph.dispose();
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+ }
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+
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+ private static void addFontImage(BufferedImage source, String declareText) {
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+ //生成image
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+ int defineWidth = QRCODE_SIZE;
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+ int defineHeight = 20;
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+ BufferedImage textImage = new BufferedImage(defineWidth, defineHeight, BufferedImage.TYPE_INT_RGB);
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+ Graphics2D g2 = (Graphics2D) textImage.getGraphics();
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+ //开启文字抗锯齿
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+ g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
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+ g2.setBackground(Color.WHITE);
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+ g2.clearRect(0, 0, defineWidth, defineHeight);
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+ g2.setPaint(Color.BLACK);
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+ FontRenderContext context = g2.getFontRenderContext();
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+ String font_cn = getChineseFont();
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+ //部署linux需要注意 linux无此字体会显示方块
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+ Font font = new Font("宋体", Font.BOLD, 18);
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+
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+ g2.setFont(font);
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+ LineMetrics lineMetrics = font.getLineMetrics(declareText, context);
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+ FontMetrics fontMetrics = FontDesignMetrics.getMetrics(font);
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+ float offset = (defineWidth - fontMetrics.stringWidth(declareText)) / 2;
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+ float y = (defineHeight + lineMetrics.getAscent() - lineMetrics.getDescent() - lineMetrics.getLeading()) / 2;
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+ g2.drawString(declareText, (int) offset, (int) y);
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+
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+ Graphics2D graph = source.createGraphics();
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+ //开启文字抗锯齿
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+ graph.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
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+ //添加image
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+ int width = textImage.getWidth(null);
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+ int height = textImage.getHeight(null);
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+
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+ Image src = textImage;
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+ graph.drawImage(src, 0, QRCODE_SIZE - 8, width, height, Color.WHITE, null);
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+ graph.dispose();
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+ }
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+ /**
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+ * 获取中文字体位置
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+ *
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+ * @return
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+ * @author xxj 2017年4月28日
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+ */
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+ private static String getChineseFont() {
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+
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+ //宋体（对应css中的 属性 font-family: SimSun; /*宋体*/）
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+ String font1 = "templates" + File.separator + "msyh.ttc";
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+// String font1 = "templates" + File.separator + "simsun.ttf";
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+ //判断系统类型，加载字体文件
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+ Properties prop = System.getProperties();
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+ String osName = prop.getProperty("os.name").toLowerCase();
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+ System.out.println(osName);
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+ if (osName.indexOf("linux") > -1) {
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+ font1 = "/usr/share/fonts/chinese/simsun.ttc";
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+ }
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+ else{
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+ font1 = "宋体";
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+ }
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+ return font1;
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+ }
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+}
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