Multer 和 Joi 兼容性

Question

我正在尝试使用 multer 在 expressJS 中上传文件。我正在使用邮递员并将标头设置为 multipart/form-data 我需要首先使用 Joi 验证请求正文，但是当我尝试首先放置 Joi 验证中间件时，它不起作用。当我首先放置 multer 中间件时，即使请求正文没有通过 Joi 中间件的验证，上传也能正常工作。我该如何解决这个问题？

Answer 1

我遇到了类似的问题，经过一些搜索和尝试和错误，这解决了我。需要记住的是在 multer 上传之后放置 Joi 验证器并稍微更改验证方案。

我已经将代码压缩到一个文件中以使其更清晰一些，所以它缺少它的依赖关系，我希望你明白：

const createFile = {
  body: {
    name: Joi.string().required(),
    description: Joi.string(),
    protected: Joi.boolean().required()
  },
  file: Joi.string().required()
};

router
  .route('/files')
  .post(upload.single('file'), validate(createFile), (req, res, next) => {
      //controller logic
    }
  );

/**
 * @swagger
 * path:
 *  /files:
 *    post:
 *      summary: Upload a file and its metadata to the server.
 *      description: Create a file.
 *      consumes:
 *        - multipart/form-data
 *      tags: [Files]
 *      security:
 *        - bearerAuth: []
 *      requestBody:
 *        required: true
 *        content:
 *          multipart/form-data:
 *            schema:
 *              type: object
 *              required:
 *                - name
 *                - protected
 *                - file
 *              properties:
 *                name:
 *                  type: string
 *                description:
 *                  type: string
 *                protected:
 *                  type: boolean
 *                  default: false
 *                file:
 *                  type: string
 *                  format: binary
 *      responses:
 *        "201":
 *          description: Created
 *          content:
 *            application/json:
 *              schema:
 *                type: object
 *                properties:
 *                  success:
 *                    type: boolean
 *                  message:
 *                    type: string
 *                  data:
 *                    type: object
 *                    $ref: '#/components/schemas/File'
 *        "401":
 *          $ref: '#/components/responses/Unauthorized'
 *        "403":
 *          $ref: '#/components/responses/Forbidden'
 */