javascript - TypeError : req. checkBody 不是函数

Question

我正尝试在注册系统中实现一些验证，但出现错误:

     TypeError: req.checkBody is not a function

来自以下代码:

module.exports = function(app, express) {
  var express = require('express');
  var api = express.Router();

  // post users to database
  api.post('/signup', function(req, res) {
    var email = req.body.email;
    var password = req.body.password;
    var password2 = req.body.password2;
    var key = req.body.key;

    // Validation
    req.checkBody('email', 'Email is required.').notEmpty();
    req.checkBody('email', 'Email is not valid').isEmail(); 
    req.checkBody('password', 'Password is required').notEmpty();
    req.checkBody('password2', 'Passwords do not match').equals(req.body.password);

    var errors = req.validationErrors();

    if(errors) {
      res.render('register', {
        errors: errors
      });
    } else {
      var user = new User({
        email: email,
        password: password
      });
      var token = createToken(user);
    }

    // save to database
    user.save(function(err) {
      if (err) {
        res.send(err);
        return;
      }

      res.json({
        success: true,
        message: 'User has been created',
        token: token
      });
    });

  });

我已经检查过，它正在从前端获取信息，而且我在另一个应用程序中使用了几乎相同的代码(其中没有包含在 module.exports = function(app, express) { }

Answer 1

您需要使用以下命令安装express-validator

npm install express-validator

然后添加

var expressValidator = require('express-validator');
api.use(expressValidator())

紧接着

var api = express.Router();

参见 TypeError: req.checkBody is not a function including bodyparser and expressvalidator module了解更多详情