init

.babelrc

@@ -0,0 +1,8 @@
+{
+  "presets": ["es2015-node"],
+  "plugins": [
+    "transform-async-to-generator",
+    "syntax-async-functions",
+    "add-module-exports"
+  ]
+}

.gitignore

@@ -31,3 +31,4 @@ node_modules
 
 # Optional REPL history
 .node_repl_history
+typings

README.md

@@ -1 +1,62 @@
-# koa2-async-example
+# koa2-example
+
+## 准备
+
+```
+npm i -g coden
+npm i -g typings
+```
+
+## 初始化
+
+```
+git clone https://github.com/17koa/koa2-example.git
+cd koa2-example
+npm i
+typings install
+npm start
+```
+
+## 实例
+
+1. 最简单的koa2.js
+1. koa2-example
+
+## Koa2-example说明
+
+```
+  "koa": "^2.0.0",
+  "koa-bodyparser": "^2.0.1",
+  "koa-convert": "^1.2.0",
+  "koa-json": "^1.1.1",
+  "koa-logger": "^1.3.0",
+  "koa-onerror": "^1.2.1",
+  "koa-router": "^7.0.0",
+  "koa-static": "^1.5.2",
+  "koa-views": "^5.0.1"
+```
+
+为了支持koa2，下面组件要注意和1.x不一样
+
+```
+  "koa": "^2.0.0",
+  "koa-router": "^7.0.0",
+  "koa-views": "^5.0.1"
+```
+
+## 语法提示
+
+```
+typings install node koa --ambient --save
+```
+
+强制提示
+
+```
+/// <reference path="typings/main/ambient/node/index.d.ts"/>
+/// <reference path="typings/main/ambient/koa/index.d.ts"/>
+```
+
+## 调试
+
+http://i5ting.github.io/vsc/#107

app.js

@@ -0,0 +1,46 @@
+
+const Koa = require('koa');
+const app = new Koa();
+const router = require('koa-router')();
+const views = require('koa-views');
+const co = require('co');
+const convert = require('koa-convert');
+const json = require('koa-json');
+const onerror = require('koa-onerror');
+const bodyparser = require('koa-bodyparser')();
+const logger = require('koa-logger');
+
+const index = require('./routes/index');
+const users = require('./routes/users');
+
+// middlewares
+app.use(convert(bodyparser));
+app.use(convert(json()));
+app.use(convert(logger()));
+app.use(convert(require('koa-static')(__dirname + '/public')));
+
+app.use(views(__dirname + '/views', {
+  extension: 'jade'
+}));
+
+// logger
+app.use((ctx, next) => {
+  const start = new Date();
+  return next().then(() => {
+    const ms = new Date() - start;
+    console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
+  });
+});
+
+router.use('/', index.routes());
+router.use('/users', users.routes());
+
+app.use(router.routes(), router.allowedMethods());
+// response
+
+app.on('error', function(err, ctx){
+  console.log(err)
+  logger.error('server error', err, ctx);
+});
+
+module.exports = app

bin/www

@@ -0,0 +1,93 @@
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+require("babel-register");
+var app = require('../app');
+console.dir(app)
+
+var debug = require('debug')('demo:server');
+var http = require('http');
+
+/**
+ * Get port from environment and store in Express.
+ */
+
+var port = normalizePort(process.env.PORT || '3000');
+// app.set('port', port);
+
+/**
+ * Create HTTP server.
+ */
+
+var server = http.createServer(app.callback());
+
+/**
+ * Listen on provided port, on all network interfaces.
+ */
+
+server.listen(port);
+server.on('error', onError);
+server.on('listening', onListening);
+
+/**
+ * Normalize a port into a number, string, or false.
+ */
+
+function normalizePort(val) {
+  var port = parseInt(val, 10);
+
+  if (isNaN(port)) {
+    // named pipe
+    return val;
+  }
+
+  if (port >= 0) {
+    // port number
+    return port;
+  }
+
+  return false;
+}
+
+/**
+ * Event listener for HTTP server "error" event.
+ */
+
+function onError(error) {
+  if (error.syscall !== 'listen') {
+    throw error;
+  }
+
+  var bind = typeof port === 'string'
+    ? 'Pipe ' + port
+    : 'Port ' + port;
+
+  // handle specific listen errors with friendly messages
+  switch (error.code) {
+    case 'EACCES':
+      console.error(bind + ' requires elevated privileges');
+      process.exit(1);
+      break;
+    case 'EADDRINUSE':
+      console.error(bind + ' is already in use');
+      process.exit(1);
+      break;
+    default:
+      throw error;
+  }
+}
+
+/**
+ * Event listener for HTTP server "listening" event.
+ */
+
+function onListening() {
+  var addr = server.address();
+  var bind = typeof addr === 'string'
+    ? 'pipe ' + addr
+    : 'port ' + addr.port;
+  debug('Listening on ' + bind);
+}

koa2.js

@@ -0,0 +1,8 @@
+const Koa = require('koa');
+const app = new Koa();
+
+app.use(ctx => {
+  return ctx.body = "hello Koa"
+});
+
+app.listen(3001);

package.json

@@ -0,0 +1,33 @@
+{
+  "name": "koa2-example",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "start": "./node_modules/.bin/nodemon bin/www",
+    "pm2": "pm2 start bin/www",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "dependencies": {
+    "co": "^4.6.0",
+    "debug": "^2.2.0",
+    "jade": "~1.11.0",
+    "koa": "^2.0.0",
+    "koa-bodyparser": "^2.0.1",
+    "koa-convert": "^1.2.0",
+    "koa-json": "^1.1.1",
+    "koa-logger": "^1.3.0",
+    "koa-onerror": "^1.2.1",
+    "koa-router": "^7.0.0",
+    "koa-static": "^1.5.2",
+    "koa-views": "^5.0.1"
+  },
+  "devDependencies": {
+    "babel-core": "^6.7.5",
+    "babel-plugin-add-module-exports": "^0.1.2",
+    "babel-polyfill": "^6.1.4",
+    "babel-preset-es2015": "^6.6.0",
+    "babel-preset-es2015-node": "^6.0.1",
+    "babel-preset-stage-3": "^6.5.0",
+    "nodemon": "^1.8.1"
+  }
+}

public/stylesheets/style.css

@@ -0,0 +1,8 @@
+body {
+  padding: 50px;
+  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
+}
+
+a {
+  color: #00B7FF;
+}

routes/index.js

@@ -0,0 +1,9 @@
+var router = require('koa-router')();
+
+router.get('/', async (ctx, next) => {
+
+  await ctx.render('index', {
+    title:'Hello Koa'
+  })
+})
+module.exports = router;

routes/users.js

@@ -0,0 +1,7 @@
+var router = require('koa-router')();
+
+router.get('/', function (ctx, next) {
+  ctx.body = 'this a users response!';
+});
+
+module.exports = router;

typings.json

@@ -0,0 +1,6 @@
+{
+  "ambientDependencies": {
+    "koa": "registry:dt/koa#2.0.0+20160317120654",
+    "node": "registry:dt/node#4.0.0+20160423143914"
+  }
+}

views/error.jade

@@ -0,0 +1,6 @@
+extends layout
+
+block content
+  h1= message
+  h2= error.status
+  pre #{error.stack}

views/index.jade

@@ -0,0 +1,5 @@
+extends layout
+
+block content
+  h1= title
+  p Welcome to #{title}

views/layout.jade

@@ -0,0 +1,7 @@
+doctype html
+html
+  head
+    title= title
+    link(rel='stylesheet', href='/stylesheets/style.css')
+  body
+    block content