[二维码]生成二维码

dev-zxing/src/main/java/com/tykj/dev/device/zxing/util/ZXingUtil.java

+package com.tykj.dev.device.zxing.util;
+
+import com.google.zxing.*;
+import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.common.HybridBinarizer;
+import javassist.NotFoundException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.multipart.MultipartFile;
+import org.springframework.web.multipart.MultipartRequest;
+import sun.misc.BASE64Encoder;
+
+import javax.imageio.ImageIO;
+import javax.servlet.http.HttpServletRequest;
+import java.awt.image.BufferedImage;
+import java.io.*;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * DATE:2021-7-20
+ * Author:zsp
+ */
+public class ZXingUtil {
+    /** 二维码上传位置 */
+    private static String codePath = "src/";
+    /** 二维码宽度 */
+    private static Integer width = 50;
+    /** 二维码高度 */
+    private static Integer height = 50;
+
+    /**
+     * 解析二维码
+     *
+     * @param name 文件名
+     * @return 二维码内容
+     * @throws IOException
+     * @throws NotFoundException
+     */
+
+//    public ResponseEntity upload(HttpServletRequest request) {
+//        MultipartRequest multiRequest = (MultipartRequest) request;
+//        MultipartFile file = multiRequest.getFile("file");
+//        return ResponseEntity.ok(fileUpload(file));
+//    }
+
+//    private void fileUpload(MultipartFile file) {
+//        String originalFilename = file.getOriginalFilename();
+//        File file1 = new File(url);
+//        if (!file1.exists()) {
+//            file1.mkdirs();
+//        }
+//        FileOutputStream fos = null;
+//        InputStream inputStream = null;
+//        OutputStream os = null;
+//
+//        String[] split = originalFilename.split("\\.");
+//        String newName = UUID.randomUUID().toString().replace("-", "") + "." + split[split.length - 1];
+//        byte[] typeByte = new byte[1024 * 1024 * 10];
+//        try {
+//            inputStream = file.getInputStream();
+//            fos = new FileOutputStream(url + newName);
+//            int i = 0;
+//            while ((i = inputStream.read(typeByte)) != -1) {
+//                fos.write(typeByte, 0, i);
+//            }
+//            fos.flush();
+//        } catch (IOException e) {
+//            e.printStackTrace();
+//        }
+//        if (inputStream != null) {
+//            try {
+//                inputStream.close();
+//            } catch (IOException e) {
+//                e.printStackTrace();
+//            } finally {
+//                inputStream = null;
+//            }
+//        }
+//
+//        if (fos != null) {
+//            try {
+//                fos.close();
+//            } catch (IOException e) {
+//                e.printStackTrace();
+//            } finally {
+//                fos = null;
+//            }
+//        }
+//
+//        if (os != null) {
+//            try {
+//                os.close();
+//            } catch (IOException e) {
+//                e.printStackTrace();
+//            } finally {
+//                os = null;
+//            }
+//        }
+//
+//        return new FileRet(originalFilename, url + newName, preview + newName);
+//    }
+//    public static String decode(String name) throws IOException, com.google.zxing.NotFoundException {
+//        String filepath = codePath + name + ".png";
+//        BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filepath));
+//        LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
+//        Binarizer binarizer = new HybridBinarizer(source);
+//        BinaryBitmap bitmap = new BinaryBitmap(binarizer);
+//        HashMap<DecodeHintType, Object> decodeHints = new HashMap<DecodeHintType, Object>();
+//        decodeHints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
+//        Result result = new MultiFormatReader().decode(bitmap, decodeHints);
+//        return result.getText();
+//    }
+//    public static String decode() throws IOException, com.google.zxing.NotFoundException {
+//        String filepath = codePath + name + ".png";
+//        BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filepath));
+//        LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
+//        Binarizer binarizer = new HybridBinarizer(source);
+//        BinaryBitmap bitmap = new BinaryBitmap(binarizer);
+//        HashMap<DecodeHintType, Object> decodeHints = new HashMap<DecodeHintType, Object>();
+//        decodeHints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
+//        Result result = new MultiFormatReader().decode(bitmap, decodeHints);
+//        return result.getText();
+//    }
+
+    /**
+     * 生成二维码
+     *
+     * @param taskId 任务id
+     * @return 二维码路径
+     * @throws WriterException
+     * @throws IOException
+     */
+    public static String encode(Integer taskId) throws WriterException, IOException {
+        Map<EncodeHintType, Object> encodeHints = new HashMap<EncodeHintType, Object>();
+        encodeHints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
+        BitMatrix bitMatrix = new MultiFormatWriter().encode(String.valueOf(taskId),
+                BarcodeFormat.QR_CODE, width, height, encodeHints);
+        String filepath = codePath + UUID.randomUUID() + ".png";
+        Path path = FileSystems.getDefault().getPath(filepath);
+        MatrixToImageWriter.writeToPath(bitMatrix,"png",path);
+        return ImageToBase64ByLocal(filepath);
+    }
+
+    /**
+     * 本地图片转换成base64字符串
+     * @param imgFile    图片本地路径
+     * @return
+     *
+     * @author ZHANGJL
+     * @dateTime 2018-02-23 14:40:46
+     */
+    public static String ImageToBase64ByLocal(String imgFile) {// 将图片文件转化为字节数组字符串，并对其进行Base64编码处理
+
+
+        InputStream in = null;
+        byte[] data = null;
+
+        // 读取图片字节数组
+        try {
+            in = new FileInputStream(imgFile);
+
+            data = new byte[in.available()];
+            in.read(data);
+            in.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        // 对字节数组Base64编码
+        BASE64Encoder encoder = new BASE64Encoder();
+
+        return encoder.encode(data);// 返回Base64编码过的字节数组字符串
+    }
+
+}