curl --location '/api/user/avatar' \
--header 'Authorization: Bearer eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMTEiLCJpYXQiOjE3NDk2MTQzMTIsImV4cCI6MTc1MjIwNjMxMn0.6ugWdzaCCg3ZYzILG-f5hIORWkn6R-sSna3S-u5fIHk' \
--form 'avatar=@"C:\\Users\\z1y0\\Pictures\\Screenshots\\屏幕截图 2025-05-22 194440.png"'{
"code": 0,
"message": "success",
"data": "头像上传成功。"
}