refactor(printer): 简化人脸二维码生成逻辑

- 移除原有的复杂二维码生成和文件操作代码
- 使用 pcFaceService.bindWxaCode 方法替代
- 直接重定向到生成的二维码 URL
- 消除临时文件创建和删除操作
- 简化 HTTP 响应处理流程

src/main/java/com/ycwl/basic/controller/printer/PrinterTvController.java

@@ -120,46 +120,8 @@ public class PrinterTvController {
      */
     @GetMapping("/face/{faceId}/qrcode")
     public void getFaceQrcode(@PathVariable("faceId") Long faceId, HttpServletResponse response) throws Exception {
-        File qrcode = new File("qrcode_face_" + faceId + ".jpg");
-        try {
-            FaceEntity face = faceRepository.getFace(faceId);
-            if (face == null) {
-                response.setStatus(404);
-                return;
-            }
-            MpConfigEntity scenicMpConfig = scenicRepository.getScenicMpConfig(face.getScenicId());
-            if (scenicMpConfig == null) {
-                response.setStatus(500);
-                return;
-            }
-            WxMpUtil.generateUnlimitedWXAQRCode(
-                scenicMpConfig.getAppId(),
-                scenicMpConfig.getAppSecret(),
-                "pages/videoSynthesis/bind_face",
-                faceId.toString(),
-                qrcode
-            );
-
-            // 设置响应头
-            response.setContentType("image/jpeg");
-            response.setHeader("Content-Disposition", "inline; filename=\"" + qrcode.getName() + "\"");
-
-            // 将二维码文件写入响应输出流
-            try (FileInputStream fis = new FileInputStream(qrcode);
-                 OutputStream os = response.getOutputStream()) {
-                byte[] buffer = new byte[1024];
-                int bytesRead;
-                while ((bytesRead = fis.read(buffer)) != -1) {
-                    os.write(buffer, 0, bytesRead);
-                }
-                os.flush();
-            }
-        } finally {
-            // 删除临时文件
-            if (qrcode.exists()) {
-                qrcode.delete();
-            }
-        }
+        String url = pcFaceService.bindWxaCode(faceId);
+        response.sendRedirect(url);
     }
 
     /**