req.body未定义-nodejs [英] req.body is undefined - nodejs

问题描述

这是我的html:

<form action='/new'  method='POST' >
  <span>pool name: </span>
  <input type="text" name="name" />
  <input type="hidden" name="imageSrcList" />
  <button type='submit' >Create new</button>
</form>

这是相关的JS:

var app = express()
app.use(fileUpload());
app.set('view engine', 'ejs')
app.use(express.static(__dirname + '/views'));

---

app.post('/new', (req, res) => {
    console.log(req.body.name);
  })

控制台读取:

TypeError: Cannot read property 'name' of undefined

我已经尝试过使用console.log(req.body)，但这也是未定义的.

I have tried with console.log(req.body) and this also is undefined.

提前谢谢！

推荐答案

您缺少将req.body设置为值所必需的body-parser中间件. Express默认情况下不附带此功能，需要通过NPM npm i --save body-parser

You're missing the body-parser middleware which is necessary to have req.body set to a value. Express doesn't come with this by default and will need to be installed via NPM npm i --save body-parser

const bodyParser = require('body-parser')
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({extended: true}))

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