gateway_koa_ts/src/app.ts

import path from 'path';
import Koa, { Context, DefaultState } from 'koa';
import Router from 'koa-router';
// 美化控制台
import consola from 'consola/dist/consola';
// 解析post的body体
import bodyParser from 'koa-bodyparser';
// 部分安全相关
import helmet from 'koa-helmet';
// 静态服务
import koaStatic from 'koa-static'
import controllers from './controllers';
import config from './config';
import redisMiddleware from './middlewares/redis';
import limitMiddleware from './middlewares/limit';
import logsMiddleware from './middlewares/logs';
import responseMiddleware from './middlewares/response';

const app = new Koa<DefaultState, Context>();

/* 中间件 */
// 安全防护
app.use(helmet());
// 静态资源
app.use(koaStatic(path.join(__dirname, config.staticPath)))
// post params解析
app.use(bodyParser());
// 日志
app.use(logsMiddleware());
// redis
app.use(redisMiddleware());
// 限流
app.use(limitMiddleware());
// 返回体格式
app.use(responseMiddleware());



app.on('error', (err, ctx: Context) => {
  ctx.$response(err, 'error', false);
});

// api 路由
const apiRouter = new Router<DefaultState, Context>();
apiRouter.get('/code', controllers.code);
// 主路由
const router = new Router<DefaultState, Context>();
router.get('/', controllers.home);
// api路由以/api前缀
router.use('/api', apiRouter.routes(), apiRouter.allowedMethods());

app.use(router.routes()).use(router.allowedMethods());

const port = config.port;
app.listen(port, () => {
  consola.success(`server is started at: http://localhost:${port}`)
});