typescript-koa-postgresql 实现一个简单的rest…

2018-11-28 08:51:48来源：博客园阅读 ()

接上文

1、安装 koa

yarn add koa koa-router koa-static

yarn add @types/koa @types/koa-router @types/koa-static --dev

2、修改 server.ts

 1 /*
 2  * @Description: 后台服务入口
 3  * @version: 0.1.0
 4  */
 5 
 6 import * as Koa from 'koa';
 7 import * as koaStatic from 'koa-static'
 8 import { router } from './router';
 9 
10 const app = new Koa();
11 
12 /**
13  * @name: 设置静态资源目录
14  * @param : undefined
15  * @return : undefined
16  */
17 app.use(koaStatic('./www'));
18 
19 /**
20  * @name: 使用路由
21  * @param : undefined
22  * @return : undefined
23  */
24 app.use(router.routes());
25 
26 /**
27  * @name: 服务端口
28  * @param : undefined
29  * @return : undefined
30  */
31 const httpPort = 8080
32 
33 app.listen(httpPort);
34 
35 console.log(`Http Server running on port ${httpPort}`);

3、新建路由文件夹 router 及文件 index.ts

 1 /*
 2  * @Description: 后台路由组件
 3  * @version: 0.1.0
 4  */
 5 import * as Router from 'koa-router';
 6 
 7 const router = new Router();
 8 
 9 router.get('/*', async (ctx) => {
10   ctx.body = 'Hell koa';
11 })
12 
13 export { router }

4、文件改动之后，服务程序能够自动重启，安装 nodemon、concurrently

yarn add nodemon concurrently --dev

5、修改 package.json

"main": "./dist/server.js",
"scripts": {
    "server": "nodemon main",
    "dev": "tsc && concurrently \"npm run tsc\" \"npm run server\"",
    "build": "tsc",
    "tsc": "tsc -w"
}

6、启动服务