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@yizhi/koa-router

v1.0.1

Published

KOA路由中间件

Downloads

5

Readme

koa-router

KOA路由中间件

安装

npm install @yizhi/koa-router

使用

import Koa from 'koa';
import Router from '@yizhi/koa-router';

const app = new Koa();

const router = new Router();
router.get("/path/to/get", async (ctx, next) => {
	// do something
});
app.use(router.callback());

路径参数

路径参数使用"{name}"或"{name:type}"来表示,系统默认支持int、boolean两种类型,当不指定类型时,表示字符串类型。

也可以根据自身需要扩展自己的类型。

1、基本使用

系统默认只支持字符串类型参数,如果需要启用int和boolean类型参数,可以通过选项defaultParamTypes来设置,也可以通过方法installDefaultParamTypes来设置。

const router = new Router({ defaultParamTypes: true });
// 匹配 "/api/user/123" "/api/user/abc"
router.get("/api/user/{id}", async (ctx, next) => {});

// 匹配 "/api/user/123"
router.get("/api/user/{id:int}", async (ctx, next) => {});

2、自定义类型

自定义参数类型可以通过选项customParamtypes和方法installCustomParamType来设置。

const router = new Router({ defaultParamTypes: true });

//uuid类型
router.installParamType("uuid", /[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/);
// date类型,匹配结果转换为{year, month, day}格式的对象
router.installParamType("date", /\d{4}-\d{2}-\d{2}/, (value) => {
	const [year, month, day] = value.spliet("-").map(parseInt);
	return { year, month, day };
});

// 匹配 "/api/user/12345678-1234-1234567890ab"
router.get("/api/user/{id:uuid}", async (ctx, next) => {
	console.log(ctx.params.id); // 输出 "12345678-1234-1234567890ab"
});
//匹配 "/api/logs/2021-10-01"
router.get("/api/logs/{date:date}", async (ctx, next) => {
	console.log(ctx.params.date); // 输出 {year: 2021, month: 10, day: 1}
});