我最近使用Heroku部署了我的node.js后端,但现在看来我的路线不再可用。它总是通过我的错误路线返回“找不到此路线”。当我在开发过程中使用localhost时,不会发生这种情况。
app.js:
const express = require('express');
const bodyParser = require('body-parser');
const HttpError = require('./models/httpError');
const questionRoutes = require('./routes/questionRoutes');
const app = express();
app.use(bodyParser.json());
app.use((req, res, next) => {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader(
'Access-Control-Allow-Headers',
'Origin, X-Requested-With, Content-Type, Accept, Authorization'
);
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PATCH, DELETE');
next();
});
app.use('/api/questions', questionRoutes);
app.use((req, res, next) => {
console.log(req.url);
const error = new HttpError('Could not find this route.', 404);
throw error;
});
app.use((error, req, res, next) => {
if (res.headerSent) {
return next(error);
}
res.status(error.code || 500);
res.json({ message: error.message || 'An unknown error occurred!' });
});
app.listen(process.env.PORT || 5000);
我没有使用任何环境变量。这是我后端的heroku链接:https://mealoftheday.herokuapp.com/
任何帮助将不胜感激!