带有附加字段的Spring Boot Rest响应MultipartFile

public class FileResponse {
    private String message;
    private String fileName;
    private String fileType;
    private long size;
    private byte[] data;

    // 省略getter和setter方法
}

@RestController
public class FileController {
    @PostMapping("/upload")
    public FileResponse uploadFile(@RequestParam("file") MultipartFile file) {
        // 处理文件上传逻辑
        String fileName = file.getOriginalFilename();
        String fileType = file.getContentType();
        long size = file.getSize();
        byte[] data = file.getBytes();

        // 创建FileResponse对象并设置字段值
        FileResponse response = new FileResponse();
        response.setMessage("File uploaded successfully");
        response.setFileName(fileName);
        response.setFileType(fileType);
        response.setSize(size);
        response.setData(data);

        return response;
    }
}

@Configuration
public class FileUploadConfig {
    @Bean
    public MultipartResolver multipartResolver() {
        CommonsMultipartResolver resolver = new CommonsMultipartResolver();
        resolver.setMaxUploadSize(5242880); // 设置最大文件上传大小为5MB
        return resolver;
    }
}