获取req.param未定义 [英] Getting req.param undefined

问题描述

我正在使用Expressjs版本4.我在req.param上得到未定义".这是我的例子: app.js

I am using Expressjs version 4.I am getting 'undefined' on req.param. Here is my example : app.js

var express = require('express');
var bodyParser = require('body-parser');
var newdata = require('./routes/new');
........................
......................
app.use(bodyParser());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());

app.use('/new', newdata);

./routes/new

./routes/new

var express = require('express');
var router = express.Router();

router.get('/', function(req, res){
    res.render('newdata', {
        title: 'Add new data'
    })
});

router.post('/', function(req, res){
    console.log(req.param['email']);
    res.end();
});

module.exports = router;

newdata.html

newdata.html

<form action="/new" role="form" method="POST">
            <div class="form-group">
                <label for="exampleInputEmail1">Email address</label>
                <input type="email" class="form-control" name="email" placeholder="Enter email">

我也尝试过使用req.body和req.params，但是答案仍然相同.

I also tried with req.body and req.params , but the answer is still same.

推荐答案

req.params引用路由路径中的变量.

req.params Refers to the variables in your route path.

app.get("/posts/:id", ...

// => req.params.id

发布数据可以通过req.body

app.post("/posts", ...

// => req.body.email

这假定您正在使用bodyParser中间件.

This assumes you are using the bodyParser middleware.

然后是req.query，对于那些?query=strings.

您可以将req.param()用于上面的3个.查找顺序为params，body，query.

You can use req.param() for either of the 3 above. The look up order is params, body, query.

这篇关于获取req.param未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！