express-validator 在使用 form-data 时无法计算 body 字段

Question

我正在尝试将 express-validator 与 multer 结合使用来验证 POST 请求的 body 组件，该请求还包含图像、headers 和参数.我已经尝试使用 body() 样式验证方法和 checkSchema 样式，但都不能正确验证我的 body 文本字段。出于某种原因，checkSchema 样式将适用于我的 headers 和参数，但不适用于 body。也许我需要重新安排一下？

const express = require('express');
const multer = require('multer');
const { checkSchema } = require('express-validator');
const router = express.Router();
const upload = multer();

// inputs coming in from everywhere - header, params and form-data
router.post(
  '/:aId/help/:tId/blah',
  checkSchema({
    aId: {
      // The location of the field, can be one or more of body, cookies, headers, params or query.
      // this check works!
      in: ['params'],
      errorMessage: 'aId is wrong',
      isAscii: true
    },
    tId: {
    // this check works
      in: ['headers'],
      errorMessage: 'pId is wrong',
      isAscii: true
    },
    uploadedTime: {
    // these checks fail to work
      in: ['body'],
      errorMessage: 'uploadedTime is wrong',
      isInt: true
    },
    uploadedByName: {
      // these checks fail to work
      in: ['body'],
      errorMessage: 'uploadedByName is wrong',
      isInt: false
    }
  }),
  upload.single('file'),
  async (req, res) => {
    console.log('ANY REQ params?', req.params);
    console.log('ANY headers?', req.headers);
    console.log('ANY BODY?', req.body);
    console.log('ANY FILES?', req.file);
  }
);

我的日志显示 body：

ANY BODY? [Object: null prototype] {
  uploadedTime: '1646762107739',
  uploadedByName: 'Moe S'
}

Answer 1

multer 用法需要在验证之前进行

express-validator 在使用 form-data 时无法计算 body 字段

express-validator can't evaluate body fields when form-data is used

node.js

express

multer

express-validator