二维码接口

src/main/java/com/sczx/user/controller/QrCodeController.java

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+package com.sczx.user.controller;
+
+
+import com.ruoyi.common.core.domain.AjaxResult;
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.WriterException;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.qrcode.QRCodeWriter;
+import org.springframework.web.bind.annotation.*;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.Map;
+import com.sczx.user.common.Result;
+/**
+ * 二维码生成控制器
+ */
+@RestController
+@RequestMapping("/qrcode")
+public class QrCodeController {
+
+    /**
+     * 生成二维码并返回Base64编码
+     *
+     * @return 包含Base64编码的二维码图片
+     */
+    @PostMapping("/generateOrderCarChangeBase64")
+    public Result<String> generateOrderCarChangeQrCodeBase64(@RequestParam(value = "qrCodeStr", required = true) String qrCodeStr) {
+        try {
+
+            // 设置二维码参数
+            Map<EncodeHintType, Object> hints = new HashMap<>();
+            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
+            hints.put(EncodeHintType.MARGIN, 1);
+
+            // 生成二维码
+            QRCodeWriter qrCodeWriter = new QRCodeWriter();
+            BitMatrix bitMatrix = qrCodeWriter.encode(qrCodeStr.toString(), BarcodeFormat.QR_CODE, 300, 300, hints);
+
+            // 将二维码转换为Base64编码
+            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+            MatrixToImageWriter.writeToStream(bitMatrix, "PNG", outputStream);
+            byte[] qrCodeBytes = outputStream.toByteArray();
+            String base64Image = Base64.getEncoder().encodeToString(qrCodeBytes);
+
+            // 返回Base64编码的图片数据
+            return Result.ok(base64Image);
+        } catch (WriterException | IOException e) {
+            return Result.fail("99999","二维码生成失败");
+        }
+    }
+}