Create files

app.js

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+/*
+ * @Author: Lienren 
+ * @Date: 2018-01-02 14:28:21 
+ * @Last Modified by: Lienren
+ * @Last Modified time: 2018-01-02 15:18:14
+ */
+
+const http = require('http');
+const path = require('path');
+const koa = require('koa');
+const static = require('koa-static');
+const cors = require('koa2-cors');
+const bodyParser = require('koa-bodyparser');
+const app = new koa();
+
+// 静态存放地址
+const staticPath = './static';
+app.use(static(path.join(__dirname, staticPath)));
+
+// 配置跨域访问
+app.use(
+  cors({
+    origin: function(ctx) {
+      if (ctx.url === '/test') {
+        return false;
+      }
+      return '*';
+    },
+    exposeHeaders: ['WWW-Authenticate', 'Server-Authorization'],
+    maxAge: 5,
+    credentials: true,
+    allowMethods: ['GET', 'POST', 'DELETE'],
+    allowHeaders: ['Content-Type', 'Authorization', 'Accept']
+  })
+);
+
+// 使用koa-bodyparser中间件
+app.use(bodyParser());
+
+// 使用路由
+const router = require('./router');
+app.use(router);
+
+// 绑定访问端口
+http.createServer(app.callback()).listen(3000);

package.json

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+{
+  "dependencies": {
+    "koa": "^2.4.1",
+    "koa-bodyparser": "^4.2.0",
+    "koa-router": "^7.3.0",
+    "koa-static": "^4.0.2",
+    "koa2-cors": "^2.0.5"
+  }
+}

router.js

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+/*
+ * @Author: Lienren 
+ * @Date: 2018-01-08 16:21:55 
+ * @Last Modified by:   Lienren 
+ * @Last Modified time: 2018-01-08 16:21:55 
+ */
+const Router = require('koa-router');
+const router = new Router();
+
+router
+  .get('/', async (ctx, next) => {
+    ctx.body = `<h1>你好</h1>`;
+  })
+  .post('/create', async (ctx, next) => {
+    console.log(ctx.request.body);
+    ctx.body = {
+      ...ctx.request.body
+    };
+  });
+
+module.exports = router.routes();