liubao68 commented on issue #4628:
URL:
https://github.com/apache/servicecomb-java-chassis/issues/4628#issuecomment-2520287972
分析了下， 应该是现在文件上传的参数类型（客户端类型）还不能支持 MultiPartFile. 开发指南有说明只支持下面的类型：
```
java.io.File
javax.servlet.http.Part
java.io.InputStream
org.springframework.core.io.Resource
```
可以考虑简单的给你的代码修改下：
```
Map<String, Object> upLoadMap = new HashMap<>();
upLoadMap.put("file", file.getInputStream());
upLoadMap.put("fileType", fileType);
String url = "servicecomb://provider/provider/saveFile";
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<Map<String, Object>> entity = new HttpEntity<>(upLoadMap,
headers);
return restOperation.postForObject(url,entity, String.class);
```
或者将
```
@RequestMapping(value = "/saveFile",method = RequestMethod.POST,consumes =
MediaType.MULTIPART_FORM_DATA_VALUE)
String saveFile(@RequestPart("fileType") int fileType,
@RequestPart("file") MultipartFile file)throws
IOException;
```
改成
```
@RequestMapping(value = "/saveFile",method = RequestMethod.POST,consumes =
MediaType.MULTIPART_FORM_DATA_VALUE)
String saveFile(@RequestPart("fileType") int fileType,
@RequestPart("file") Part file)throws IOException;
```
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