feat:增加上传博客图片模块

service/file_service.py

@@ -0,0 +1,40 @@
+from fastapi import UploadFile, File, HTTPException
+
+from config.rustfs import s3
+from config.setting import settings
+
+ALLOWED_IMAGE_TYPES = [
+    "image/jpeg",
+    "image/png",
+    "image/gif",
+    "image/webp",
+    "image/svg+xml",
+]
+
+BUCKET = 'blog'
+NGINX_PROXY = 'rustfs'
+
+
+async def upload_file(md5: str, file: UploadFile = File(...)) -> str:
+    # 校验文件类型是否是图片
+    if file.content_type not in ALLOWED_IMAGE_TYPES:
+        raise HTTPException(
+            status_code=400,
+            detail="只允许上传图片文件 (JPEG, PNG, GIF, WEBP, SVG)"
+        )
+
+    file_ext = file.filename.split('.')[-1]
+    unique_filename = f"{md5}.{file_ext}"
+
+    file_content = await file.read()
+
+    # 上传到S3
+    s3.put_object(
+        Bucket=BUCKET,
+        Key=unique_filename,
+        Body=file_content,
+        ContentType=file.content_type
+    )
+
+    # 返回文件url
+    return f"{NGINX_PROXY}/{BUCKET}/{unique_filename}"