出于某种疯狂的原因,当我使用 postman 进行测试时,我的本地 Node 服务器正在工作,但当我上传到 Heroku 时,出现以下错误:
at=错误代码=H12 desc="请求超时"method=POST path="/api/messages"host=test.herokuapp.com request_id=big_number_here fwd="my_ip_address"dyno=web.1 连接=0ms服务=30000ms状态=503字节=0协议(protocol)=https
它似乎超时了。我测试了另一条路线,只是正常的前端路线,并且它加载正确。我的代码如下:
app.js
var routesApi = require('./app_api/routes/index');
app.use('/api', routesApi);
app_api/routes
var express = require('express');
var router = express.Router();
var ctrlMessages = require('../controllers/messages');
// Messages
router.post('/messages', ctrlMessages.messagesCreate);
module.exports = router;
编辑
messages.js(添加 Controller 代码)
var mongoose = require('mongoose');
var Msg = mongoose.model('Messages');
// mongoose.set('debug', true); // TESTING
var sendJsonResponse = function(res, status, content) {
res.status(status);
res.json(content);
};
/* POST a new location */
/* /api/messages */
module.exports.messagesCreate = function(req, res) {
Msg.create({
msg1: req.body.msg1,
msg2: req.body.msg2
}, function(err, msg) {
if (err) {
console.log(err);
sendJsonResponse(res, 400, err);
} else {
console.log(err);
sendJsonResponse(res, 201, msg);
}
});
};
模型 messages.js
var mongoose = require('mongoose');
var msgdata = new mongoose.Schema({
msg1: {
type: String,
required: true,
},
msg2: {
type: String,
required: true
},
createdOn: {
type: Date,
"default": Date.now
}
});
mongoose.model('Messages', msgdata);
数据库连接器 db.js
var mongoose = require('mongoose');
var gracefulShutdown;
var dbURI = 'mongodb://locationToMyMongoDB';
if (process.env.NODE_ENV === 'production') {
dbURI = process.env.MONGOLAB_URI;
}
mongoose.connect(dbURI);
// Emulate SIGINT signal for Windows
var readLine = require('readline');
if (process.platform === "win32") {
var rl = readLine.createInterface ({
input: process.stdin,
output: process.stdout
});
rl.on ('SIGINT', function() {
process.emit ("SIGINT");
});
}
mongoose.connection.on('connected', function() {
console.log('Mongoose connected to ' + dbURI);
});
mongoose.connection.on('error', function(err) {
console.log('mongoose connection error: ' + err);
});
mongoose.connection.on('disconnected', function() {
console.log('Mongoose disconnected');
});
gracefulShutdown = function(msg, callback) {
mongoose.connection.close(function() {
console.log('Mongoose disconnected through ' + msg);
callback();
});
};
// For nodemon restarts
process.once('SIGUSR2', function() {
gracefulShutdown('nodemon restart', function() {
process.kill(process.pid, 'SIGUSR2');
});
});
// For app termination
process.on('SIGINT', function() {
gracefulShutdown('app termination', function() {
process.exit(0);
});
});
// For Heroku app termination
process.on('SIGTERM', function() {
gracefulShutdown('Heroku app shutdown', function() {
process.exit(0);
});
});
// BRING IN SCHEMAS & MODELS
require('./messages');
最佳答案
这有点有趣,但却是一个简单的解决方案:
摘自 db.js
...
var dbURI = 'mongodb://locationToMyMongoDB';
if (process.env.NODE_ENV === 'production') {
dbURI = process.env.MONGOLAB_URI;
}
...
我使用了硬编码的dbURI
变量,并且没有将其列为环境变量,因此我的代码正在检查process.env.MONGOLAB_URI
是否存在,并且事实并非如此。
我只是简单地评论了该行,它运行得非常好!
关于Node.js API 在本地工作但不在 Heroku 上工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42732525/