使用body-parser解析嵌套的JSON并表达

Question

我有一个iOS应用程序,它将一个JSON数据包发送到网络服务器.网络服务器代码如下所示:

var express = require('express');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var app = express();
mongoose.connect('mongodb://localhost/test');

var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function (callback) {
  console.log("MongoDB connection is open.");
});

// Mongoose Schema definition
var Schema = mongoose.Schema;
var LocationSchema = new Schema({
    X: Number,
    Y: Number,
    Orientation: Number,
    UserID: String,
    Time: String
});

// Mongoose Model definition
var LocationsCollection = mongoose.model('locations', LocationSchema);

// create application/json parser
var jsonParser = bodyParser.json();

// URL management
app.get('/', function (req, res) {
    res.sendFile(__dirname + '/index.html');
});

app.post('/update', jsonParser, function (req, res) {
    if (!req.body) return res.sendStatus(400);
    else {
        console.log(req.body);
    }
});

// Start the server
var server = app.listen(3000, function () {
  var host = server.address().address
  var port = server.address().port
  console.log('App listening at %s:%s',host, port)
});

关键部分是app.post方法,它处理从我的iOS应用程序发送的传入http请求.目前,将req.body打印到控制台的方法如下所示:

{ 
  datapoint_1:
   { timestamp: '2015-02-06T13:02:40:361Z',
     x: 0.6164286615466197,
     y: -0.6234909703424794,
     id: 'B296DF8B-6489-420A-97B4-6F0F48052758',
     orientation: 271.3345946652066 },
  datapoint_2:
   { timestamp: '2015-02-06T13:02:40:961Z',
     x: 0.6164286615466197,
     y: -0.6234909703424794,
     id: 'B296DF8B-6489-420A-97B4-6F0F48052758',
     orientation: 273.6719055175781 }
}

因此,您可以看到请求是嵌套的JSON对象.理想情况下,我想遍历请求对象(即数据点)并将其插入mongoDB数据库(通过mongoose).但是,我似乎无法弄清楚如何使用req.body做很多事情.我似乎无法创建循环来迭代请求或如何正确解析嵌套的JSON文件,以便它与mongoose模式匹配.谁能提供一些关于如何将这些数据点插入到猫鼬数据库中的指导？

Answer 1

将body-parser的 extended属性设置true为允许解析嵌套对象.

var express = require('express');
var app = express()
var bodyParser = require('body-parser');

app.use(bodyParser.urlencoded({
    extended: true
}));