Node.js（with express& bodyParser）：无法从帖子请求中获取表单数据 [英] Node.js (with express & bodyParser): unable to obtain form-data from post request
问题描述
我似乎无法恢复发送到我的Node.js服务器的发布请求的表单数据。我把下面的服务器代码和帖子请求（使用邮递员在chrome中发送）：
I can't seem to recover the form-data of a post request sent to my Node.js server. I've put below the server code and the post request (sent using postman in chrome):
发布请求
POST /api/login HTTP/1.1
Host: localhost:8080
Cache-Control: no-cache
----WebKitFormBoundaryE19zNvXGzXaLvS5C
Content-Disposition: form-data; name="userName"
jem
----WebKitFormBoundaryE19zNvXGzXaLvS5C
NodeJS服务器代码
var express = require('express'); // call express
var app = express(); // define our app using express
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use(bodyParser());
app.all('/*', function(req, res, next) {
res.header('Access-Control-Allow-Origin', '*');
res.header('Access-Control-Allow-Headers', 'Content-Type,accept,access_token,X-Requested-With');
next();
});
var port = process.env.PORT || 8080; // set our port
var router = express.Router(); // get an instance of the express Router
router.get('/', function(req, res) {
res.json({ message: 'I am groot!' });
});
// Login
router.route('/login')
.post(function(req, res){
console.log('Auth request recieved');
// Get the user name
var user = req.body.userName;
var aToken = getToken(user);
res.json({
'token':'a_token'
});
});
app.use('/api', router);
app.listen(port);
登录方法尝试获取req.body.userName - 但是，req.body始终为空。
我已经看到其他SO的情况描述了这样的行为，但没有一个相关的答案在这里适用。
The login method tries to obtain the req.body.userName - however, req.body is always empty. I've seen other cases on SO describing such behavior but none of the related answers did apply here.
感谢您的帮助。
推荐答案
一般来说，一个快速应用程序需要指定适当的 body-parser中间件，以便 req.body 包含正文。
In general, an express app needs to specify the appropriate body-parser middleware in order for req.body to contain the body.
]
-
如果您需要解析url编码（非多部分）表单数据以及JSON，请尝试添加：
If you required parsing of url-encoded (non-multipart) form data, as well as JSON, try adding:
// Put this statement near the top of your module
var bodyParser = require('body-parser');
// Put these statements before you define any routes.
app.use(bodyParser.urlencoded());
app.use(bodyParser.json());
首先，您需要添加 body-parser 到 package.json ，然后执行 npm更新。
First, you'll need to add body-parser to the dependencies property of your package.json, and then perform a npm update.
要处理多部分表单数据， code> bodyParser.urlencoded（）正文解析器将无法正常工作。请参阅建议的模块解析多部分主体。
To handle multi-part form data, the bodyParser.urlencoded() body parser will not work. See the suggested modules here for parsing multipart bodies.
这篇关于Node.js（with express& bodyParser）：无法从帖子请求中获取表单数据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！
