Question

我用express编写了一个简单的PUT服务。现在，当我调用PUT服务并传递数据时，我发现了一些奇怪的东西。当我使用req.data读取数据时，我可以看到我传递的数据。但是当我尝试进入req.data的属性时，我得到一个未定义的。

这是我的app.js

module.exports = function (data) {

    var express = require('express');
    var path = require('path');
    var routes = require('./routes/index')(data);
    var bodyParser = require('body-parser');

    var app = express();

    // all environments
    app.set('port', process.env.PORT || 3000);
    app.set('views', path.join(__dirname, 'views'));
    app.set('view engine', 'jade');

    app.use(bodyParser.json());
    app.use(bodyParser.urlencoded({ extended: false }));
    app.use(express.static(path.join(__dirname, 'public')));
    app.use(function (req, res, next) {

        res.set('X-Powered-By', 'Flight Tracker');

        next();

    });

    //CORS middleware
    app.use(function(req, res, next) {
        res.header('Access-Control-Allow-Origin', 'http://127.0.0.1:63018');
        res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
        res.header('Access-Control-Allow-Headers', 'Content-Type');

        next();
    });

    app.put('/newflight', routes.create);

    return app;

};

这是航班

var Flight = function () {
    this.data = {
        number: null,
        origin: null,
        destination: null,
        departs: null,
        arrives: null,
        actualDepart: null,
        actualArrive: null
    };

    this.fill = function (info) {
        for (var prop in this.data) {

            if (this.data[prop] !== 'undefined') {
                this.data[prop] = info[prop];
            }
        }
    };

    this.triggerDepart = function () {
        this.data.actualDepart = Date.now();
    };
    this.triggerArrive = function () {
        this.data.actualArrive = Date.now();
    };
    this.getInfo = function () {
        return this.data;
    };

};


//Serving as factory to create instances of Objects

module.exports = function (info) {

    var instance = new Flight();    
    instance.fill(info);    
    return instance;

}

这是我的路线

module.exports = function (data) {

        var flight = require('../flight');

        for (var number in data) {

            console.log(data[number]);
            data[number] = flight(data[number]);
        };

        var functions = {};

        functions.create = function(req,res){
            if(!req.body) { 
                return res.sendStatus(400); 
            } else{
                console.log(req.body);
                console.log(req.body.number);
                console.log(req.body.origin);
                console.log(req.body.destination);
                var number = req.body.number;            
                data[number] = flight(req.body);
                console.log(data[number]);

                res.json({
                    status:202,
                    statusText:"Entries have been created",
                    data:data
                });
            }


        };

        return functions;

    }

我也有上面的create方法的输出：

知道为什么会这样吗？

Answer 1

基本上我的postdata不正确。当我应该只传递postdata时，我正在传递postdata.data。这解决了这个问题。我还在标题中添加了'Content-Type'：'application / json'。

Express无法读取PUT请求中req.data的属性值

1 个答案: