Flutter Dio网络框架4.0.6升级到最新版本时，文件上传报错

错误提示：
org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object ‘commentDto’ on field baseFile’: rejected value []; codes [typeMismatch.commentDto.baseFile,typeMismatch.baseFile,typeMismatch.[Lorg.springframework.web.multipart.MultipartFile;,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [commentDto.baseFile,baseFile]; arguments []; default message [baseFile]]; default message [Failed to convert property value of type ‘java.lang.String’ to required type ‘org.springframework.web.multipart.MultipartFile[]’ for property ‘baseFile’; nested exception is java.lang.IllegalStateException: Cannot convert value of type ‘java.lang.String’ to required type ‘org.springframework.web.multipart.MultipartFile’ for property ‘baseFile[0]’: no matching editors or conversion strategy found]

解决方式：

MultipartFile.fromFileSync(
            data["image"],
            filename: suffix,
            contentType: MediaType('application', 'octet-stream'),//这行是新增的
          )