【发布时间】：2018-12-31 06:27:18
【问题描述】：
我对 Node.js 和 Express.js 完全陌生，并且一直在尝试通过一些示例将 Shippo API 集成到我的电子商务网络应用程序中但是我遇到了一些错误，尽管我多次检查了我的代码，但还是无法解决。
我收到 UnhandledPromiseRejectionWarning 错误，根据我在网上阅读的内容，这意味着在我的代码中某处有一个 .then() 部分没有包含“catch”或“what to-do”是请求返回错误。任何帮助将不胜感激。
这是我的代码：
var express = require('express')
var app = express()
var http = require('http');
var Raven = require('raven');
var shippo = require('shippo')('ACCESS_TOKEN');
var engines = require('consolidate');
const bodyParser = require('body-parser');
const path = require('path');
app.use(bodyParser.urlencoded({extended: true}));
app.use(bodyParser.json());
app.engine('html', engines.mustache);
app.set('view engine', 'html');
//app.use(express.static(path.join(_dirname,'/')));
app.get('/', function (req, res) {
res.render('Index.html');
})
app.post('/', function (req, res) {
var addressFrom = {
"object_purpose":"PURCHASE",
"name": "SENDER_NAME",
"company":"Shippo",
"street1":"215 Clayton St.",
"city":"San Francisco",
"state":"CA",
"zip":"94117",
"country":"US", //iso2 country code
"phone":"+1 555 341 9393",
"email":"SENDER_EMAIL",
};
// example address_to object dict
var addressTo = {
"object_purpose":"PURCHASE",
"name": req.body.fnames + ' ' + req.body.lnames,
"company": req.body.company,
"street1":req.body.street,
"city":req.body.city,
"state":req.body.state,
"zip":req.body.zipcode,
"country": req.body.country, //iso2 country code
"phone":"+1 555 341 9393",
"email":"support@goshippo.com",
};
// parcel object dict
var parcelOne = {
"length":"5",
"width":"5",
"height":"5",
"distance_unit":"in",
"weight":"2",
"mass_unit":"lb"
};
var shipment = {
"object_purpose": "PURCHASE",
"address_from": addressFrom,
"address_to": addressTo,
"parcels": [parcelOne],
"submission_type": "DROPOFF"
};
shippo.transaction.create({
"shipment": shipment,
"servicelevel_token": "ups_standard",
"carrier_account": 'CARRIER_TOKEN',
"label_file_type": "PDF"
})
.then(function(transaction) {
shippo.transaction.list({
"rate": transaction.rate
})
.then(function(mpsTransactions) {
mpsTransactions.results.forEach(function(mpsTransaction){
if(mpsTransaction.object_status == "SUCCESS") {
console.log("Label URL: %s", mpsTransaction.label_url);
console.log("Tracking Number: %s", mpsTransaction.tracking_number);
console.log("E-Mail: %s", mpsTransaction.object_owner);
console.log(mpsTransaction.object_status);
res.status(200).send("Label can be found under: " + mpsTransaction.label_url);
} else {
// hanlde error transactions
console.log("Message: %s", mpsTransactions.messages);
}
});
})
}, function(err) {
// Deal with an error
console.log("There was an error creating transaction : %s", err.detail);
res.send("something happened :O")
});
})
app.post('/successp', function (req, res) {
var token = req.body.stripeToken; // Using Express
// Charge the user's card:
var charge = stripe.charges.create({
amount: 1000,
currency: "eur",
description: "Example charge",
source: token,
}, function(err, charge) {
// asynchronously called
});
res.send('Thanks!')
})
app.post('/successp', function (req, res) {
var token = req.body.stripeToken; // Using Express
// Charge the user's card:
var charge = stripe.charges.create({
amount: 1000,
currency: "eur",
description: "Example charge",
source: token,
}, function(err, charge) {
// asynchronously called
});
res.send('Thanks!')
})
app.listen(3000, function () {
console.log('Example app listening on port 3000!')
})这是我得到的错误：
侦听端口 3000 的示例应用程序！ （节点：2378）UnhandledPromiseRejectionWarning （节点：2378） UnhandledPromiseRejectionWarning：未处理的承诺拒绝。此错误源于在没有 catch 块的情况下抛出异步函数内部，或拒绝未使用 .catch() 处理的承诺。 （拒绝编号：1） （节点：2378）[DEP0018] DeprecationWarning：不推荐使用未处理的承诺拒绝。将来，未处理的 Promise 拒绝将使用非零退出代码终止 Node.js 进程。
我也不完全确定某些行的目的（同样，我对 express 和 node.js 非常陌生）。什么是引擎和胡子？另外，我看到这个示例代码使用了 APP.POST('/succesp', function(req, res)...)，那 '/succesp' 到底是什么>?我需要创建另一个 html 文件？还有，开头的“app.use(express.statc([ath.join(_dirnam,'/')));”是什么？
【问题讨论】：
标签： html node.js express server node-modules