我正在使用OSX Elcapitan 10.11.6版本，运行以下命令：
curl localhost:3000
或者
curl localhost:3000 -4
或者
curl 0.0.0.0:3000
或者
curl -x "" "http://127.0.0.1:3000"
它总是显示：
curl: (7) 无法连接到127.0.0.1端口3000：连接被拒绝
ruby -v
ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-darwin13.0]
我的代码：
var http = require('http'),
express = require('express'),
path = require('path'),
MongoClient = require('mongodb').MongoClient,
Server = require('mongodb').Server,
CollectionDriver = require('./collectionDriver').CollectionDriver;
var app = express();
app.set('port', process.env.PORT || 3000);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({extended: false}));
var mongoHost = 'localHost';
var mongoPort = 27017;
var collectionDriver;
var url = 'mongodb://localhost:27017/mongo-server';
// Use connect method to connect to the server
MongoClient.connect(url, function(error, db) {
if (error) {
console.error(error.message);
process.exit(1);
}
console.log("Connected to MongoDB successfully.");
collectionDriver = new CollectionDriver(db);
});
app.use(express.static(path.join(__dirname, 'public')));
app.get('/', function (req, res) {
res.send('<html><body><h1>Hello World</h1></body></html>');
});
app.get('/:collection', function(req, res) {
var params = req.params;
collectionDriver.findAll(req.params.collection, function(error, objs) {
if (error) { res.send(400, error); }
else {
if (req.accepts('html')) {
res.render('data',{objects: objs, collection: req.params.collection});
} else {
res.set('Content-Type','application/json');
res.send(200, objs);
}
}
});
});
app.get('/:collection/:entity', function(req, res) {
var params = req.params;
var entity = params.entity;
var collection = params.collection;
if (entity) {
collectionDriver.get(collection, entity, function(error, objs) {
if (error) { res.send(400, error); }
else { res.send(200, objs); }
});
} else {
res.send(400, {error: 'bad url', url: req.url});
}
});
app.post('/:collection', function(req, res) {
var object = req.body;
var collection = req.params.collection;
collectionDriver.save(collection, object, function(err,docs) {
if (err) { res.send(400, err); }
else { res.send(201, docs); }
});
});
app.put('/:collection/:entity', function(req, res) {
var params = req.params;
var entity = params.entity;
var collection = params.collection;
if (entity) {
collectionDriver.update(collection, req.body, entity, function(error, objs) {
if (error) { res.send(400, error); }
else { res.send(200, objs); }
});
} else {
var error = { "message" : "Cannot PUT a whole collection" }
res.send(400, error);
}
});
app.delete('/:collection/:entity', function(req, res) {
var params = req.params;
var entity = params.entity;
var collection = params.collection;
if (entity) {
collectionDriver.delete(collection, entity, function(error, objs) {
if (error) { res.send(400, error); }
else { res.send(200, objs); }
});
} else {
var error = { "message" : "Cannot DELETE a whole collection" }
res.send(400, error);
}
});
app.use(function (req,res) {
res.render('404', {url:req.url});
});
http.createServer(app).listen(app.get('port'), function(){
console.log('Express server listening on port ' + app.get('port'));
});