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求助帖!!! 智能云图库项目(已解决)

解决方法

在File Manager中少写了multipartFile.transferTo(file); 光传了一个空的临时文件,有点搞笑了

描述

不知道为什么,我这个图片上传的功能不能用,但是之前的那个File Controller文件中的测试文件上传的接口却可以使用,应该不是配置的COS的问题,但具体的我又搞不懂,求大佬帮忙看看.感谢

报错信息

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js
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Missing http body (Status Code: 500; Error Code: InternalError; Request ID: NjdjODg5YzFfZjMxMDc2MDlfMTNiYjVfNzA3NGIyYQ==); Trace ID: OGVmYzZiMmQzYjA2OWNhODk0NTRkMTBiOWVmMDAxODc0OWRkZjk0ZDM1NmI1M2E2MTRlY2MzZDhmNmI5MWI1OWRlZDk5YzgyOTg0ZTg2ODA1ODFjOGY0MWFhYWFhOTdmZDlkZWIzYjU3YmE4Y2M4MzAxZDdiMGRlZDgxMDI4NTM=

相关代码

PictureController代码

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Java
复制代码
@RestController
@RequestMapping("/picture")
public class PictureController {

    @Resource
    private UserService userService;

    @Resource
    private PictureService pictureService;

    @PostMapping("/upload")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<PictureVO> uploadPicture(@RequestPart("file") MultipartFile multipartFile,
                                                 PictureUploadRequest pictureUploadRequest,
                                                 HttpServletRequest request){
        User loginUser = userService.getLoginUser(request);
        PictureVO pictureVO = pictureService.uploadPicture(multipartFile, pictureUploadRequest, loginUser);
        return ResultUtils.success(pictureVO);
    }
}

PictureServiceImpl代码

▼
Java
复制代码
@Service
public class PictureServiceImpl extends ServiceImpl<PictureMapper, Picture>
    implements PictureService {

    @Resource
    private FileManager fileManager;
    @Override
    public PictureVO uploadPicture(MultipartFile multipartFile, PictureUploadRequest pictureUploadRequest, User loginUser) {
        // 校验登录用户
        ThrowUtils.throwIf(loginUser == null, ErrorCode.NOT_LOGIN_ERROR);
        // 判断是新增还是更新图片
        Long pictureId = null;
        if (pictureUploadRequest != null && pictureUploadRequest.getId() != 0) {
            // 更新
            pictureId = pictureUploadRequest.getId();
        }
        // 如果是更新, 查询数据库判断图片是否存在
        if (pictureId != null){
            boolean exists = this.lambdaQuery()
                    .eq(Picture::getId, pictureId)
                    .exists();
            ThrowUtils.throwIf(!exists, ErrorCode.NOT_FOUND_ERROR);
        }
        // 上传图片到 COS
        // 根据用户id划分目录
        String uploadPathPrefix = String.format("public/%s", loginUser.getId());
        // 调用图片上传方法
        UploadPictureResult uploadPictureResult = fileManager.uploadPicture(multipartFile, uploadPathPrefix);
        Picture picture = new Picture();
        picture.setUrl(uploadPictureResult.getUrl());
        picture.setName(uploadPictureResult.getPicName());
        picture.setPicSize(uploadPictureResult.getPicSize());
        picture.setPicWidth(uploadPictureResult.getPicWidth());
        picture.setPicHeight(uploadPictureResult.getPicHeight());
        picture.setPicScale(uploadPictureResult.getPicScale());
        picture.setPicFormat(uploadPictureResult.getPicFormat());
        picture.setUserId(loginUser.getId());
        if (pictureId != null){
            picture.setId(pictureId);
            picture.setEditTime(new Date());
        }
        // 构建对象存储到数据库中
        boolean save = this.saveOrUpdate(picture);
        ThrowUtils.throwIf(!save, ErrorCode.OPERATION_ERROR,"图片上传失败");
        return PictureVO.objToVo(picture);
    }
}

FileManager代码

▼
text
复制代码
@Service
@Slf4j
public class FileManager {
    // 1 MB
    private static final long ONE_MB = 1024 * 1024;

    // 允许上传的文件后缀
    private static final List<String> ALLOW_UPLOAD_SUFFIX = Arrays.asList("jpg", "jpeg", "png", "gif", "webp");

    @Resource
    private CosClientConfig cosClientConfig;

    @Resource
    private CosManager cosManager;

    /**
     * 上传图片
     *
     * @param multipartFile
     * @param uploadPathPrefix
     * @return
     */
    public UploadPictureResult uploadPicture(MultipartFile multipartFile, String uploadPathPrefix) {
        // 校验图片
        checkPicture(multipartFile);
        // 编辑图片上传地址(包括路径前缀和文件名,文件名修改为当前日期和uuid随机数,同时拼接上原文件后缀)
        String uuid = RandomUtil.randomString(8);
        String originalFilename = multipartFile.getOriginalFilename();
        String updateFileName = String.format("%s/%s/%s", DateUtil.formatDate(new Date()), uuid,
                FileUtil.getSuffix(originalFilename));
        String uploadPath = String.format("%s/%s", uploadPathPrefix, updateFileName);
        File file = null;
        // 上传图片
        try {
            // 创建临时文件
            file = File.createTempFile(uploadPath, null);
            // 上传图片 (根据修改后的路径)
            PutObjectResult putObjectResult = cosManager.putPictureObject(uploadPath, file);
            // 获取上传后的图片信息
            ImageInfo imageInfo = putObjectResult.getCiUploadResult().getOriginalInfo().getImageInfo();
            // 封装返回结果 (自定义返回结果)
            UploadPictureResult uploadPictureResult = new UploadPictureResult();
            int width = imageInfo.getWidth();
            int height = imageInfo.getHeight();
            double scale = NumberUtil.round( width * 1.0 / height, 2).doubleValue();
            uploadPictureResult.setUrl(uploadPath);
            uploadPictureResult.setPicName(updateFileName);
            uploadPictureResult.setPicSize(FileUtil.size(file));
            uploadPictureResult.setPicWidth(width);
            uploadPictureResult.setPicHeight(height);
            uploadPictureResult.setPicScale(scale);
            uploadPictureResult.setPicFormat(imageInfo.getFormat());
            return uploadPictureResult;
        } catch (Exception e) {
            log.error("图片上传到对象存储失败",e);
            throw new BusinessException(ErrorCode.SYSTEM_ERROR, "图片上传失败");
        }finally {
            this.deleteTempFile(file);
        }
        // 封装返回结果
    }

    /**
     * 校验文件
     *
     * @param multipartFile
     */
    private void checkPicture(MultipartFile multipartFile) {
        // 判断文件是否为空
        ThrowUtils.throwIf(multipartFile == null, ErrorCode.PARAMS_ERROR, "文件不能为空");
        // 1.校验文件大小
        long fileSize = multipartFile.getSize();
        ThrowUtils.throwIf(fileSize > ONE_MB * 2, ErrorCode.PARAMS_ERROR, "文件大小不能超过2M");
        // 2.校验文件后缀
        String fileSuffix = FileUtil.getSuffix(multipartFile.getOriginalFilename());
        ThrowUtils.throwIf(!ALLOW_UPLOAD_SUFFIX.contains(fileSuffix), ErrorCode.PARAMS_ERROR, "不支持的文件类型");
    }

    /**
     * 删除临时文件
     * @param file
     */
    private void deleteTempFile(File file) {
        if (file != null) {
            FileUtil.del(file);
        }
        try {
            // 删除临时文件
            file.delete();
        } catch (Exception e) {
            log.error("文件删除失败,文件地址:{}",file.getAbsolutePath(),e);
        }
    }

}

CosManager代码
```js
/**
     * 上传图片对象
     *
     * @param key  唯一键
     * @param file 文件
     */
    public PutObjectResult putPictureObject(String key, File file) {
        PutObjectRequest putObjectRequest = new PutObjectRequest(cosClientConfig.getBucket(), key,
                file);
        // 对图片进行处理(获取基本信息也是一种处理)
        PicOperations picOperations = new PicOperations();
        // 1 表示返回原图信息
        picOperations.setIsPicInfo(1);
        // 构造处理函数
        putObjectRequest.setPicOperations(picOperations);
        return cosClient.putObject(putObjectRequest);
    }
智能协同云图库项目
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