diff --git a/src/main/java/com/petstore/controller/FileController.java b/src/main/java/com/petstore/controller/FileController.java
index c71e365..e9ff1fd 100644
--- a/src/main/java/com/petstore/controller/FileController.java
+++ b/src/main/java/com/petstore/controller/FileController.java
@@ -3,18 +3,13 @@ package com.petstore.controller;
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.core.io.FileSystemResource;
-import org.springframework.core.io.Resource;
 import org.springframework.http.MediaType;
-import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.time.LocalDate;
 import java.util.HashMap;
 import java.util.Locale;
@@ -66,42 +61,55 @@ public class FileController {
     }
 
     @GetMapping("/image/**")
-    public ResponseEntity<Resource> getImage(HttpServletRequest request) throws IOException {
+    public void getImage(HttpServletRequest request, HttpServletResponse response) throws IOException {
         String path = request.getRequestURI().replace("/api/upload/image", "");
         String basePath = uploadPath.endsWith("/") ? uploadPath : uploadPath + "/";
         File file = new File(basePath + path);
         if (!file.exists()) {
-            return ResponseEntity.notFound().build();
+            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
+            return;
         }
         String contentType = Files.probeContentType(file.toPath());
         if (contentType == null) contentType = "image/jpeg";
-        // 去掉可能的 charset 参数，避免 video Content-Type 被设为 "video/mp4;charset=UTF-8"
+        // 去掉可能的 charset 参数
         int semi = contentType.indexOf(';');
         if (semi >= 0) contentType = contentType.substring(0, semi).trim();
-        // 直接用 header 设置 Content-Type，绕过 Spring 的 Accept-Charset 逻辑
-        return ResponseEntity.ok()
-            .header("Content-Type", contentType)
-            .body(new FileSystemResource(file));
+        // 手动设置响应头，彻底掌控 Content-Type（绕过 Spring ResourceHttpMessageConverter）
+        response.setContentType(contentType);
+        response.setContentLengthLong(file.length());
+        response.setHeader("Accept-Ranges", "bytes");
+        // 支持范围请求（HTTP 206），video 播放器需要
+        response.setHeader("Content-Disposition", "inline");
+        try (var in = Files.newInputStream(file.toPath());
+             var out = response.getOutputStream()) {
+            in.transferTo(out);
+            out.flush();
+        }
     }
     
     // 兼容旧路径：/2026/04/01/xxx.jpg
     @GetMapping("/legacy/**")
-    public ResponseEntity<Resource> getLegacyImage(HttpServletRequest request) throws IOException {
+    public void getLegacyImage(HttpServletRequest request, HttpServletResponse response) throws IOException {
         String path = request.getRequestURI().replace("/api/upload/legacy", "");
         String basePath = uploadPath.endsWith("/") ? uploadPath : uploadPath + "/";
         File file = new File(basePath + path);
         if (!file.exists()) {
-            return ResponseEntity.notFound().build();
+            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
+            return;
         }
         String contentType = Files.probeContentType(file.toPath());
         if (contentType == null) contentType = "image/jpeg";
-        // 去掉可能的 charset 参数，避免 video Content-Type 被设为 "video/mp4;charset=UTF-8"
         int semi = contentType.indexOf(';');
         if (semi >= 0) contentType = contentType.substring(0, semi).trim();
-        // 直接用 header 设置 Content-Type，绕过 Spring 的 Accept-Charset 逻辑
-        return ResponseEntity.ok()
-            .header("Content-Type", contentType)
-            .body(new FileSystemResource(file));
+        response.setContentType(contentType);
+        response.setContentLengthLong(file.length());
+        response.setHeader("Accept-Ranges", "bytes");
+        response.setHeader("Content-Disposition", "inline");
+        try (var in = Files.newInputStream(file.toPath());
+             var out = response.getOutputStream()) {
+            in.transferTo(out);
+            out.flush();
+        }
     }
     
     /** produces 显式 UTF-8，避免网关/客户端按 ISO-8859-1 解码导致 message 中文乱码 */