后端返回：{"data": "", "header": {"Server": "openresty/1.25.3.1", "Connection": "keep-alive", "Content-Length": "0", "Date": "Sat, 29 Jun 2024 08:47:10 GMT", "protocol": "http/1.1"}, "statusCode": 200, "cookies": [], "errMsg": "uploadFile:ok"}