对于上下文，我正在创建一个文件上传/下载RESTful服务，并在Postman中进行测试，我得到了一个错误，我不应该这样做。
这是我的 * 文档实体 *

import jakarta.persistence.*;
import lombok.*;

@Entity
@Setter
@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
@Table(name = "t_document")
public class Document extends BaseEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;

    @Column(name = "title")
    private String title;

    @Lob
    @Column(name = "data", columnDefinition = "LONGBLOB")
    private byte[] data;

    @Column(name = "name")
    private String name;

    @Column(name = "file_type")
    private String fileType;

    @ManyToOne
    @JoinColumn(name = "application_id")
    private ApplicationEntity applicationEntity;
}

BaseEntity只是实现了可序列化，仅此而已。
这些是我的Service和ServiceImpl类

import org.springframework.web.multipart.MultipartFile;

public interface DocumentService {

    Document saveDoc(MultipartFile file, String title) throws Exception;

    Document getDoc(int id);
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;

@Service
public class DocumentServiceImpl implements DocumentService{

    @Autowired
    private DocumentRepository documentRepository;

    @Override
    public Document saveDoc(MultipartFile file, String title) throws Exception {
        String fileName = StringUtils.cleanPath(file.getOriginalFilename());
        try{
            if(fileName.contains("..")){
                throw new Exception("Filename contains invalid path sequence "+fileName);
            }
            Document fileEntity = Document.builder()
                                    .title(title)
                                    .name(fileName)
                                    .fileType(file.getContentType())
                                    .data(file.getBytes())
                                    .build();
            return documentRepository.save(fileEntity);
        }catch (Exception e){
            throw new Exception("Could not save File:" +fileName);
        }
    }

    @Override
    public Document getDoc(int id) {
        return documentRepository.findById(id).orElse(null);
    }
}

这是我的控制器类

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.support.ServletUriComponentsBuilder;

@Slf4j
@RestController
@RequestMapping("/recruiter")
public class RecruiterLandingPage {

    @Autowired
    private DocumentService documentService;

    @GetMapping("/hello")
    public ResponseEntity<ApiResponse<String>> Hello(){
        return ResponseEntity.ok().body(ApiResponse.of("Recruiter's landing page"));
    }

    @PostMapping("/candidate/uploadDocument")
    public DocumentResponse uploadFile(@RequestParam("file") MultipartFile file) throws Exception{
        Document document = null;
        document = documentService.saveDoc(file, "title");

        String downloadUrl = ServletUriComponentsBuilder
                                    .fromCurrentContextPath()
                                    .path("/download/")
                                    .path(Integer.toString(document.getId()))
                                    .toUriString();

        return new DocumentResponse(
                document.getName(),
                downloadUrl,
                file.getSize()
        );

    }
    @PostMapping("/candidate/name")
    public String returnName(@RequestParam("name") String name) throws Exception {
        return name;
    }
}

当我在 Postman 上运行时，我得到了这个Error Image

{
    "type": "about:blank",
    "title": "Bad Request",
    "status": 400,
    "detail": "Required part 'file' is not present.",
    "instance": "/user-service/recruiter/candidate/uploadDocument"
}

即使我在postman中的form data选项中传递文件。 Postman 的卷发

curl --location --request POST 'localhost:8080/user-service/recruiter/candidate/uploadDocument' \
--form 'file=@"/C:/Users/user/Downloads/Doc - Wireframe.docx"'

任何和所有的帮助是感激的