当我尝试在react中上传一个图像，并将其发送到一个spring Boot API以将文件保存到一个数据库中时，我在spring boot中得到以下错误：

2022-12-04 03:25:28.610  WARN 15080 --- [nio-8080-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.multipart.support.MissingServletRequestPartException: Required request part 'image' is not present]
2022-12-04 03:25:28.631  WARN 15080 --- [nio-8080-exec-1] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize value of type `java.util.LinkedHashMap<java.lang.String,java.util.List<java.lang.String>>` from Array value (token `JsonToken.START_ARRAY`); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type `java.util.LinkedHashMap<java.lang.String,java.util.List<java.lang.String>>` from Array value (token `JsonToken.START_ARRAY`)<EOL> at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 1]]

我不知道如何解决这个问题。我已经试着四处寻找，但还没有找到任何答案。我也不确定问题是在我的React代码或在我的springboot代码。
我认为我的错误是在reactjs，因为我看到在其他职位的人有一些相同的问题，他们的问题一直是他们的React代码.但我还没有弄清楚到底是什么可能是错误的React代码.我也张贴我的Spring Boot 代码的情况下，你可能想看看它，我的React代码：

const FileUpload = () => {


    const link = "http://localhost:8080/uploadimage?key"

    var formData = new FormData()

    const [fileName, setFilename] = useState("")

    const [tags, setTags] = useState([])




    {/* THIS IS CODE FOR SELECTING A FILE TO UPLOAD*/}
    {/* IM TRYING TO DEFINE IMAGE BY PUTTING IT IN QUOTES IN FROMDATA.APPEND */}
    const handleFile = (e) => {
        setFilename(e.target.files[0].name)
        console.log("handle file")
        console.log(e.target.files[0])
        formData.append("image", e.target.files[0])

    }


    const uploadFile = (e) => {
    {/* THIS IS CODE FOR FILE UPLOADING*/}
        console.log("sending...")
        console.log(formData)
        axios.post(
            link, 
            formData, {
            header: {
                'Content-Type': 'multipart/form-data'
            }
        })
        .then(res => {
            console.log(res.data)
        })
        .catch(error => {
            console.log(error)
        })


    {/* THIS IS CODE FOR SOMETHING ELSE; SOME TAGHANDLING */}
       setTimeout(3000)
        const taglink = "http://localhost:8080/givetags/" + fileName;
        axios.post(taglink, tags)
        .then(res => (
            console.log(res.data)
            ))
           
    }

    {/* THIS IS CODE IS ALSO FOR SOMETHING ELSE*/}
    function updateTags(e) {
        const log = {...tags}
        log[e.target.id] = e.target.value.split(" ")
        setTags(log)
    }



  return (
    <div>

        <Container>
            <Card.Title className='text-center mb-3'>Upload File</Card.Title>
            <Form.Group controlId='file' className='mb-3'>
                <Form.Control type='file' onChange={(e) => handleFile(e)}></Form.Control>
            </Form.Group>
            <Form.Group controlId='tags' className='mb-3'>
                <Form.Control onChange={(e) => updateTags(e)} type="text" placeholder='Write tags'></Form.Control>
            </Form.Group>

            <Button onClick={(e) => uploadFile(e)}>Upload File</Button>
        </Container>

        <TagsConvention></TagsConvention>



    </div>
  )
}

export default FileUpload

这是我的springboot代码：控制器：

@RestController
public class FileController {

    @Autowired
    private ImageServiceImpl service;

//==========================For uploading a file======================================
    @CrossOrigin(origins = "http://localhost:3000")
    @PostMapping("/uploadimage")
    public ResponseEntity<?> uploadImage(@RequestParam("image") MultipartFile file) throws IOException {
        String uploadImage = service.uploadImage(file);
        return ResponseEntity.status(HttpStatus.OK)
                .body(uploadImage);
    }



    @CrossOrigin(origins = "http://localhost:3000")
    @GetMapping("/getimage/{fileName}")
    public ResponseEntity<?> downloadImage(@PathVariable String fileName){

        byte[] file=service.downloadImage(fileName);
        System.out.println(file);


        return ResponseEntity.status(HttpStatus.OK)
                .contentType(MediaType.valueOf(service.getType(fileName)))
                .body(file);
    }

    @CrossOrigin(origins = "http://localhost:3000")
    @PostMapping("/givetags/{fileName}")
    public ImageData giveImagetags(@PathVariable String fileName, @RequestBody Map<String, List<String>> tags) {
        //return service.giveImageTags(fileName, tags);
        //return service.giveImageTags(fileName, tags);

        System.out.println(tags);
        List<String> tagList = tags.get("tags");

        return service.giveImageTags(fileName, tagList);

    }

    @CrossOrigin(origins = "http://localhost:3000")
    @GetMapping("/getallimages")
    public List<String> getAllImages() {
        return service.getAllImages();
    }



}

我的形象模型：

@Entity
@Table(name = "ImageData")
@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class ImageData implements Image{
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long imageDataId;

    private String name;
    private String type;



    @ManyToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
    @JoinTable(name="file_has_tag",
            joinColumns = {@JoinColumn(name="image_data_id")},
            inverseJoinColumns = {@JoinColumn(name = "tag_id")})
    @JsonIgnoreProperties("image_data")
    private Set<Tag> tags;

    @Lob
    @Column(name = "image_data",length = 1000)
    private byte[] data;

    @Override
    public String toString() {
        return "ImageData{" +
                "imageDataId=" + imageDataId +
                ", name='" + name + '\'' +
                ", type='" + type + '\'' +
                ", tags=" + tags +
                '}';
    }
}

上传文件的服务功能：

public String uploadImage(MultipartFile file) throws IOException {
    ImageData imageData = imageDataRepository.save(ImageData.builder()
            .name(file.getOriginalFilename())
            .type(file.getContentType())
            .data(ImageUtils.compressImage(file.getBytes())).build()); //"data" is from the model class

    System.out.println(imageData.toString());
    if (imageData != null) {
        return "file uploaded successfully : " + file.getOriginalFilename();
    }
    return null;
}

用于压缩图像的utils类中的函数

public static byte[] compressImage(byte[] data) {
    Deflater deflater = new Deflater();
    deflater.setLevel(Deflater.BEST_COMPRESSION);
    deflater.setInput(data);
    deflater.finish();

    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(data.length);
    byte[] tmp = new byte[4*1024];
    while (!deflater.finished()) {
        int size = deflater.deflate(tmp);
        outputStream.write(tmp, 0, size);
    }
    try {
        outputStream.close();
    } catch (Exception ignored) {
    }
    return outputStream.toByteArray();
}

我试过改变formdata的值，以及fromdata.append中“image”的键，但我还没有弄清楚。我也试过搜索问题，但人们遇到的语法问题与我不同，所以我不知道可能是什么问题。