因此服务器正在运行并正在侦听未被阻止的端口3000 据我所知,但是当我尝试加载页面时,它会挂起一段时间,然后才会提供以下消息:
"此页面无效 localhost没有发送任何数据。 ERR_EMPTY_RESPONSE
我不确定为什么即使我调整get(' /")主页以简化某些内容,我也无法获得任何结果。通过终端也没有任何错误,因此我不确定如何诊断问题。
我的app.js代码:
const express = require('express');
const path = require('path');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const expressValidator = require('express-validator');
const flash = require('connect-flash');
const session = require('express-session');
mongoose.connect('mongodb://localhost/nodekb');
let db = mongoose.connection;
// Check connection
db.once('open', function(){
console.log('Connected to MongoDB');
});
// Check for DB errors
db.on('error', function(err){
console.log(err);
});
// Init App
const app = express();
// Bring in Models
let Article = require('./models/article');
// Load View Engine
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
// Body Parser Middleware
// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }));
// parse application/json
app.use(bodyParser.json());
// Set Public Folder
app.use(express.static(path.join(__dirname, 'public')));
// Express Session Middleware
app.use(session({
secret: 'keyboard cat',
resave: true,
saveUninitialized: true
}));
// Express Messages Middleware
app.use(require('connect-flash')());
app.use(function (req, res, next) {
res.locals.messages = require('express-messages')(req, res);
next();
});
// Express Validator Middleware
app.use(expressValidator);
// Home Route
app.get('/', function(req, res){
Article.find({}, function(err, articles){
if(err){
console.log(err);
} else {
res.render('index', {
title:'Articles',
articles: articles
});
}
});
});
// Route Files
let articles = require('./routes/articles');
let users = require('./routes/users');
app.use('/articles', articles);
app.use('/users', users);
app.listen(3000, function(){
console.log("We are running on port 3000");
});
答案 0 :(得分:0)
我认为问题是你的查询是空数组。 我在查询回调中添加了条件,以检查文章的数组长度。
app.get('/', function(req, res){
Article.find({}, function(err, articles){
if(err){
console.log(err);
res.json(err);
}else if(articles.length == 0){
console.log("Articles not found");
res.json({error : "Articles not found"});
} else {
console.log("Articles found");
res.render('index', {
title:'Articles',
articles: articles
});
}
});
});
我希望它会对你有所帮助。