FileUploadException: the request was rejected because no multipart boundary was found

飞熊 • 2023年5月8日下午10:43 • 技术随笔 • 阅读 204

概述

最近在做一个视频检测的需要，使用Postman上传视频时，代码抛错：

ERROR 13557 [] [http-nio-5000-exec-8] org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[dispatcherServlet] Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is java.io.IOException: org.apache.tomcat.util.http.fileupload.FileUploadException: the request was rejected because no multipart boundary was found] with root cause

org.apache.tomcat.util.http.fileupload.FileUploadException: the request was rejected because no multipart boundary was found
        at org.apache.tomcat.util.http.fileupload.impl.FileItemIteratorImpl.init(FileItemIteratorImpl.java:178)

背景

业务应用层的文件上传Controller：

@Resource
private FileService fileService;

@PostMapping(value = "video")
@ApiOperation(value = "提交视频识别", httpMethod = "POST")
public Result video(@RequestParam("file") MultipartFile file, @LoginUser SysUser user, HttpServletRequest request) {
	Result<FileInfo> fileInfoResult = fileService.fileUpload(ArmConstant.BUCKET, file);
}

上面代码里面的FileService是基于FeignClient而定义的接口：

@FeignClient(name = ServiceNameConstants.FILE_SERVICE, fallbackFactory = FileServiceFallbackFactory.class, decode404 = true)
public interface FileService {
	@PostMapping(value = "/upload/{bucket}", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
	Result<FileInfo> fileUpload(@PathVariable("bucket") String bucket, @RequestParam("file") MultipartFile file);
}

FileService需要有一个支撑的服务，即file-center服务，其Controller定义如下：

@RestController
@Slf4j
public class FileController {
	@PostMapping("/upload/{bucket}")
	public Result<FileInfo> fileUpload(@PathVariable("bucket") String bucket, @RequestParam("file") MultipartFile file) {
	}
}