使用Node和Postgres設計RESTful API的錯誤

Question

我在關注this tutorial以教我自己如何通過節點連接到postgres。一切正常，直到測試第一個請求，它返回一個錯誤。

測試的瀏覽器的請求了 - http://localhost:3000/api/puppies：

我都嚴格遵循的方向。什麼可能出錯？

404 

Error: Not Found 
    at /Users/alexander/node-postgres-promises/app.js:30:13 
    at Layer.handle [as handle_request] (/Users/alexander/node-postgres-promises/node_modules/express/lib/router/layer.js:95:5) 
    at trim_prefix (/Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:312:13) 
    at /Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:280:7 
    at Function.process_params (/Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:330:12) 
    at next (/Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:271:10) 
    at /Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:618:15 
    at next (/Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:256:14) 
    at Function.handle (/Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:176:3) 
    at router (/Users/alexander/node-postgres-promises/node_modules/express/lib/router/index.js:46:12) 

app.js

var express = require('express'); 
var path = require('path'); 
var favicon = require('serve-favicon'); 
var logger = require('morgan'); 
var cookieParser = require('cookie-parser'); 
var bodyParser = require('body-parser'); 

var routes = require('./routes/index'); 
var users = require('./routes/users'); 

var app = express(); 

// view engine setup 
app.set('views', path.join(__dirname, 'views')); 
app.set('view engine', 'jade'); 

// uncomment after placing your favicon in /public 
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico'))); 
app.use(logger('dev')); 
app.use(bodyParser.json()); 
app.use(bodyParser.urlencoded({ extended: false })); 
app.use(cookieParser()); 
app.use(express.static(path.join(__dirname, 'public'))); 

app.use('/', routes); 
app.use('/users', users); 

// catch 404 and forward to error handler 
app.use(function(req, res, next) { 
    var err = new Error('Not Found'); 
    err.status = 404; 
    next(err); 
}); 

// error handlers 

// development error handler 
// will print stacktrace 
if (app.get('env') === 'development') { 
    app.use(function(err, req, res, next) { 
    res.status(err.status || 500); 
    res.render('error', { 
     message: err.message, 
     error: err 
    }); 
    }); 
} 

// production error handler 
// no stacktraces leaked to user 
app.use(function(err, req, res, next) { 
    res.status(err.status || 500); 
    res.render('error', { 
    message: err.message, 
    error: {} 
    }); 
}); 


module.exports = app; 

---

路線/ index.js

var express = require('express'); 
var router = express.Router(); 

/* GET home page. */ 
router.get('/', function(req, res, next) { 
    res.render('index', { title: 'Express' }); 
}); 

module.exports = router; 

Answer 1

它是做正確的事。你正在試圖獲得http://localhost:3000/api/puppies，而且也沒有路線爲，但你確實有一個包羅萬象這裏

// catch 404 and forward to error handler 
app.use(function(req, res, next) { 
    var err = new Error('Not Found'); 
    err.status = 404; 
    next(err); 
}); 

映入一切 else和投用文字錯誤處理程序「未找到」。