文件MultipartFile上传同时，接收复杂参数

方案一MultipartFile和dto分开

@PostMapping("/uploadData")
public Result<Object> uploadData(@RequestParam("file") MultipartFile file,@RequestPart() DataDTO dataDTO) {// 处理文件上传逻辑，如保存文件到本地或云存储// 处理接收到的 DTO 对象逻辑，并进行业务处理return ResponseEntity.ok("File uploaded and DTO object received successfully");
}

SpringBoot文件上传同时，接收复杂参数

方案二MultipartFile放入dto中

dto类

@Data
public class MetaDataDTO {/*** 主键id*/private Integer id;/*** 关联数据类型id*/protected Integer metadataTypeId;/*** 数据名称*/private String dataName;/*** 描述*/private String description;/*** 共享级别*/private String sharingLevel;/*** 数据图片*/MultipartFile dataPic;
}

controller类

/*** 新增或修改*/
@PostMapping("/saveData")
public Result<Object> saveData(@Validated MetaDataDTO metaDataDTO) {return dataService.saveData(metaDataDTO);
}

service实现类

@Service
public class DataServiceImpl implements DataService {@Overridepublic Result<Object> saveData(MetaDataDTO metaDataDTO) {// * * * * * * * * * * * * * * * * * * * * * * * * * *////                 上传图片                            //// * * * * * * * * * * * * * * * * * * * * * * * * * *////必须上传图片if (metaDataDTO.getDataPic() == null) {return Result.error(CodeMsg.META_DATA_PIC_NOT_EXIST);}// 检查文件大小if (metaDataDTO.getDataPic().getSize() > 1 * 1024 * 1024) { // 1MBreturn Result.error(CodeMsg.FILE_SIZE_TOO_LARGE);}// 检查文件类型if (!ImageUtil.isImageFile(metaDataDTO.getDataPic())) {return Result.error(CodeMsg.FILE_FORMAT_NOT_PIC);}}
}

判断文件是否是图片工具类

public class ImageUtil {/*** 判断文件是否为图片*/public static boolean isImageFile(MultipartFile file) {if (file != null && !file.isEmpty()) {Tika tika = new Tika();try {String fileType = tika.detect(file.getInputStream());if (fileType.startsWith("image/")) {// 是图片类型return true;} else {// 非图片类型return false;}} catch (IOException e) {// 处理异常情况}} else {// 未上传文件return false;}return false;}/*** 图片保存至服务器指定目录,返回访问路径*/public static String savePhotoAndGetPath(String basePath, String detailPath, MultipartFile file) {InputStream inputStream = null;FileOutputStream fileOutputStream = null;try {String filename = file.getOriginalFilename();//"/data/static/dataSharingStatic/idCard/"String directoryPath = basePath + detailPath;File dir = new File(directoryPath);if (!dir.exists()) {boolean mkdirs = dir.mkdirs();}inputStream = file.getInputStream();String filePath = directoryPath + filename;fileOutputStream = new FileOutputStream(filePath);IOUtils.copy(inputStream, fileOutputStream);fileOutputStream.flush();return detailPath + filename;} catch (IOException ex) {ex.printStackTrace();return null;} finally {try {if (inputStream != null) {inputStream.close();}if (fileOutputStream != null) {fileOutputStream.close();}} catch (IOException ex) {ex.printStackTrace();}}}
}