如何使用spring boot在mysql中保存镜像？我如何也能检索到它呢？我在注册时遇到400错误

CREATE TABLE images (
  id INT AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(255),
  image BLOB
);

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

@Entity
@Table(name = "images")
public class Image {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String name;

    @Lob
    private byte[] image;

    // 省略构造函数、getter和setter方法
}

@Service
public class ImageService {
    @Autowired
    private ImageRepository imageRepository;

    public void saveImage(Image image) {
        imageRepository.save(image);
    }

    public Image getImageById(Long id) {
        return imageRepository.findById(id).orElse(null);
    }
}

@RestController
public class ImageController {
    @Autowired
    private ImageService imageService;

    @PostMapping("/images")
    public void saveImage(@RequestBody Image image) {
        imageService.saveImage(image);
    }

    @GetMapping("/images/{id}")
    public ResponseEntity<byte[]> getImageById(@PathVariable Long id) {
        Image image = imageService.getImageById(id);
        if (image != null) {
            return ResponseEntity.ok().contentType(MediaType.IMAGE_JPEG).body(image.getImage());
        } else {
            return ResponseEntity.notFound().build();
        }
    }
}

spring.datasource.url=jdbc:mysql://localhost:3306/your_database_name
spring.datasource.username=your_username
spring.datasource.password=your_password
spring.jpa.hibernate.ddl-auto=update

POST /images
Content-Type: application/json

{
  "name": "image.jpg",
  "image": "base64_encoded_image_data"
}

GET /images/{id}