在Express 4中查询字符串变量仍然为空 [英] Query string variables still empty in Express 4

问题描述

按照此处 stackoverflow 上的建议编写简单服务器:

Write simple server as suggested here on stackoverflow:

rest_api.js:

const express = require('express');
const bodyParser = require('body-parser')

// Initialize RESTful server
const app = express();

app.set('port', (process.env.PORT || 5000));
app.use(bodyParser.json() );                        // to support JSON-encoded bodies
app.use(bodyParser.urlencoded({extended: true}));   // to support URL-encoded bodies

// Spin up the server
app.listen(app.get('port'), function() {
    console.log('running on port', app.get('port'))
});

app.post('/bookinghandler', function (req, res) {
    let senderId = req.query.sender;
    let email = req.query.email;
    let hotelName = req.query.hotelName;
    let confirmNumber = req.query.confirmNumber;
    let start = req.query.startDate;
    let end = req.query.endDate;
}

app.js:

// This loads the environment variables from the .env file
require('dotenv-extended').load();

const builder = require('botbuilder');
const restify = require('restify');

// Setup Restify Server
var server = restify.createServer();
server.listen(process.env.port || process.env.PORT || 3978, function () {
   console.log('%s listening to %s', server.name, server.url); 
});

// Create chat connector for communicating with the Bot Framework Service
var connector = new builder.ChatConnector({
    appId: process.env.MICROSOFT_APP_ID,
    appPassword: process.env.MICROSOFT_APP_PASSWORD
});

// Listen for messages from users 
server.post('/api/messages', connector.listen());

var bot = require("./bot")
bot.InitializeBot(connector);

// Load REST API module
var restApi = require("./rest_api");

并希望通过查询字符串获取参数(URL中的示例请求: bookinghandler?sender = 100000250242810& email=[e-mail]& hotelName = Grand Hotel& confirmNumber = 654321& startDate = 2017-10-11& amp;; endDate = 2017-10-15 ).

And want to get parameters through query string (sample request in URL: bookinghandler?sender=100000250242810&email=[e-mail]&hotelName=Grand Hotel&confirmNumber=654321&startDate=2017-10-11&endDate=2017-10-15).

但是 req.params ， req.param()， req.body ， req.query 是仍然是空的.我做错了什么?这是通过 require('url') 或 require('qs') ?如果我只想通过快递吗?

However req.params, req.param(), req.body, req.query are still empty. What I'm doing wrong? Is it the only way to do it through require('url') or require('qs')? If I want to it through express only?

推荐答案

问题出在使用2种REST框架:express和restify.需要使整个应用程序重新定义或表示应用程序.在我拥有一台Restify服务器之前，在其中创建了另一台Express服务器(只是采用了不同的示例).通常需要使用其中一个，而不是两者都使用.

Problem was in using 2 REST frameworks: express and restify. Need to make entire application as restify or express app. Before I had a restify server and inside that another express server was created (just took different examples). Generally need to use one or the other, not both.

修改后的app.js:

// This loads the environment variables from the .env file
require('dotenv-extended').load();

const builder = require('botbuilder');
const restify = require('restify');

// Setup Restify Server
var server = restify.createServer();
server.use(require('restify-plugins').queryParser());
server.listen(process.env.port || process.env.PORT || 3978, function () {
   console.log('%s listening to %s', server.name, server.url); 
});

// Index route
server.get('/', function (req, res) {
    res.send('My chat bot')
});

// Create chat connector for communicating with the Bot Framework Service
var connector = new builder.ChatConnector({
    appId: process.env.MICROSOFT_APP_ID,
    appPassword: process.env.MICROSOFT_APP_PASSWORD
});

// Listen for messages from users 
server.post('/api/messages', connector.listen());

var bot = require("./bot")
bot.InitializeBot(connector);

// Load REST API module
var restApi = require("./rest_api");

// POST request from webview page
server.post('/bookinghandler', restApi.BookingHandler);

修改后的rest_api.js:

const service = require("./service");

module.exports.BookingHandler = async function (req, res, next) {
    let senderId = req.query.sender;
    let email = req.query.email;
    let hotelName = req.query.hotelName;
    let confirmNumber = req.query.confirmNumber;
    let start = req.query.startDate;
    let end = req.query.endDate;

    res.send(200);  // Success
    return next(false);
};

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