express-validator在Express 4中未正确初始化

Posted 2023-01-06

[当使用Express 4和Node.js 11启动express-validator 6.3时：

var express = require('express'),
sanitize = require('express-validator'),
app = express()

app.use(express.json())

app.post('/whatever', [
  check('somevariable').escape() // <---keeps saying that check is not defined!? same error if I change "check" to "sanitize"
], (req, res) => 
  console.log(req.body.somevariable);
) 

我一直收到ReferenceError：检查未定义。我在做什么错！!

答案

应该是：

const express = require('express');
const  check  = require('express-validator');
const app = express();
const port = 3000;
app.use(express.json());
app.post('/whatever', [check('somevariable').escape()], (req, res) => 
  console.log(req.body.somevariable);
);

app.listen(3000, () => console.log(`server listen port $port`));

NOT：

const check = require('express-validator');