TASK:模块化；

src/main/java/com/ai/da/common/utils/MinioUtil.java

@@ -374,14 +374,31 @@ public class MinioUtil {
      */
     public String getPreSignedUrl(String bucketName, String fileName, int expiry) {
         try {
-            return minioClient.getPresignedObjectUrl(
-                    GetPresignedObjectUrlArgs.builder()
-                            .bucket(bucketName)
-                            .object(fileName)
-                            .expiry(expiry, TimeUnit.MINUTES)
-                            .method(Method.GET)
-                            .build()
-            );
+
+            String lowerName = fileName.toLowerCase();
+            boolean isImage = lowerName.endsWith(".jpg") || lowerName.endsWith(".jpeg") || lowerName.endsWith(".png");
+
+            GetPresignedObjectUrlArgs.Builder builder = GetPresignedObjectUrlArgs.builder()
+                    .bucket(bucketName)
+                    .object(fileName)
+                    .expiry(expiry, TimeUnit.MINUTES)
+                    .method(Method.GET);
+
+            if (isImage) {
+                // 根据后缀名设置正确的 content-type
+                String contentType = "image/jpeg";
+                if (lowerName.endsWith(".png")) {
+                    contentType = "image/png";
+                }
+
+                Map<String, String> queryParams = new HashMap<>();
+                queryParams.put("response-content-type", contentType);
+                queryParams.put("response-content-disposition", "inline");
+
+                builder.extraQueryParams(queryParams);
+            }
+
+            return minioClient.getPresignedObjectUrl(builder.build());
         } catch (MinioException | InvalidKeyException | IOException | NoSuchAlgorithmException e) {
             e.printStackTrace();
             throw new BusinessException(e.getMessage());