├── .gitignore ├── LICENSE ├── README.md ├── imgs └── demo.png ├── package-lock.json ├── package.json ├── src ├── app.ts ├── decorators │ ├── http-methods.ts │ ├── path.ts │ └── validate.ts └── router.ts └── tsconfig.json /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules/ 2 | 3 | # Typescript v1 declaration files 4 | typings/ 5 | output/ 6 | .DS_Store -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2017 linkFly 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ts-router-to-controller 2 | 3 | 《[从 JavaScript 到 TypeScript - express 路由进化](http://tasaid.com/Blog/20171011233051.html?sgs=github-demo)》 文章 demo。 4 | 5 | ![](https://github.com/linkFly6/ts-router-to-controller/blob/master/imgs/demo.png) 6 | 7 | 8 | 9 | 执行命令： 10 | 11 | ```bash 12 | npm i 13 | npm run dev 14 | ``` 15 | 16 | - POST 访问 `localhost:8000/user/login` 17 | - GET 访问 `localhost:8000/user/exit` 18 | 19 | 20 | -------------------------------------------------------------------------------- /imgs/demo.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/linkFly6/ts-router-to-controller/2a0e381e606c765b72d65680ef569ac9cc5bbdda/imgs/demo.png -------------------------------------------------------------------------------- /package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "ts-demo", 3 | "version": "1.0.0", 4 | "lockfileVersion": 1, 5 | "requires": true, 6 | "dependencies": { 7 | "@types/express": { 8 | "version": "4.0.37", 9 | "resolved": "http://artifactory.intra.xiaojukeji.com:80/artifactory/api/npm/npm/@types/express/download/@types/express-4.0.37.tgz", 10 | "integrity": "sha1-YlrDdlFpZ24BiXykcBHCY3V4SXE=", 11 | "requires": { 12 | "@types/express-serve-static-core": "*", 13 | "@types/serve-static": "*" 14 | } 15 | }, 16 | "@types/express-serve-static-core": { 17 | "version": "4.0.53", 18 | "resolved": 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-------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "ts-demo", 3 | "version": "1.0.0", 4 | "description": "", 5 | "main": "output/app.js", 6 | "scripts": { 7 | "dev": "tsc && node ./output/app.js" 8 | }, 9 | "author": "linkFly", 10 | "license": "MIT", 11 | "devDependencies": {}, 12 | "dependencies": { 13 | "typescript": "^2.5.3", 14 | "@types/express": "^4.0.37", 15 | "express": "^4.16.2", 16 | "reflect-metadata": "^0.1.10" 17 | } 18 | } 19 | -------------------------------------------------------------------------------- /src/app.ts: -------------------------------------------------------------------------------- 1 | import 'reflect-metadata' 2 | import router from './router' 3 | import * as express from 'express' 4 | 5 | const app = express() 6 | 7 | router(app) 8 | 9 | app.listen(8000, () => { 10 | console.log('Example app listening at http://localhost:8000') 11 | }) -------------------------------------------------------------------------------- /src/decorators/http-methods.ts: -------------------------------------------------------------------------------- 1 | export const symbolHttpMethodsKey = Symbol("router:httpMethod") 2 | 3 | export const httpGet = function (target: any, propertyKey: string) { 4 | // 挂载到调用装饰器的方法上 5 | Reflect.defineMetadata(symbolHttpMethodsKey, 'get', target, propertyKey) 6 | } 7 | 8 | export const httpPost = function (target: any, propertyKey: string) { 9 | Reflect.defineMetadata(symbolHttpMethodsKey, 'post', target, propertyKey) 10 | } -------------------------------------------------------------------------------- /src/decorators/path.ts: -------------------------------------------------------------------------------- 1 | import { Request, Response } from 'express' 2 | 3 | export const symbolPathKey = Symbol.for('router:path') 4 | 5 | export let path = (path: string): Function => { 6 | return function (target: any, propertyKey: string, descriptor: TypedPropertyDescriptor) { 7 | 8 | Reflect.defineMetadata(symbolPathKey, path, target, propertyKey) 9 | if (!descriptor.value) return 10 | // 覆盖掉原来的 router method，在外层做封装 11 | let oldMethod = descriptor.value 12 | descriptor.value = function (req: Request, res: Response) { 13 | const params = Object.assign({}, req.body, req.query) 14 | let methodResult = oldMethod.call(this, params) 15 | // 输出返回结果 16 | res.send(methodResult) 17 | } 18 | } 19 | } -------------------------------------------------------------------------------- /src/decorators/validate.ts: -------------------------------------------------------------------------------- 1 | // 定义一个私有 key 2 | const requiredMetadataKey = Symbol.for('router:required') 3 | 4 | // 定义参数装饰器，大概思路就是把要校验的参数索引保存到成员中 5 | export const required = function (target, propertyKey: string, parameterIndex: number) { 6 | // 属性附加 7 | const rules = Reflect.getMetadata(requiredMetadataKey, target, propertyKey) || [] 8 | rules.push(parameterIndex) 9 | Reflect.defineMetadata(requiredMetadataKey, rules, target, propertyKey) 10 | } 11 | 12 | // 定义一个方法装饰器，从成员中获取要校验的参数进行校验 13 | export const validateEmptyStr = function (target, propertyKey: string, descriptor: PropertyDescriptor) { 14 | // 保存原来的方法 15 | let method = descriptor.value 16 | // 重写原来的方法 17 | descriptor.value = function () { 18 | let args = arguments 19 | // 看看成员里面有没有存的私有的对象 20 | const rules = Reflect.getMetadata(requiredMetadataKey, target, propertyKey) as Array 21 | if (rules && rules.length) { 22 | // 检查私有对象的 key 23 | rules.forEach(parameterIndex => { 24 | // 对应索引的参数进行校验 25 | if (!args[parameterIndex]) throw Error(`arguments${parameterIndex} is invalid`) 26 | }) 27 | } 28 | return method.apply(this, arguments) 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /src/router.ts: -------------------------------------------------------------------------------- 1 | import { Router } from 'express' 2 | 3 | import { symbolHttpMethodsKey, httpGet, httpPost } from './decorators/http-methods' 4 | import { path, symbolPathKey } from './decorators/path' 5 | import { required, validateEmptyStr } from './decorators/validate' 6 | 7 | class User { 8 | @httpPost 9 | @path('/user/login') 10 | login() { 11 | return 'user login' 12 | } 13 | 14 | @httpGet 15 | @path('/user/exit') 16 | exit() { 17 | return 'user logout' 18 | } 19 | 20 | /** 21 | * 属性装饰器演示 22 | * @param v1 23 | */ 24 | @httpGet 25 | @path('/validate') 26 | @validateEmptyStr 27 | valid(@required v1: string) { 28 | console.log(v1) 29 | return v1 30 | } 31 | } 32 | 33 | export default (app: Router) => { 34 | let user = new User() 35 | for (let methodName in user) { 36 | let method = user[methodName] 37 | if (typeof method !== 'function') break 38 | // 反射得到挂载的数据 39 | let httpMethod = Reflect.getMetadata(symbolHttpMethodsKey, user, methodName) 40 | let path = Reflect.getMetadata(symbolPathKey, user, methodName) 41 | 42 | // app.get('/', () => any) 43 | app[httpMethod](path, method) 44 | } 45 | } -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "target": "es5", 4 | "module": "commonjs", 5 | "moduleResolution": "node", 6 | "lib": [ 7 | "es2015", 8 | "es2015.promise", 9 | "es2017.object" 10 | ], 11 | "outDir": "./output", 12 | "sourceMap": true, 13 | "strict": true, 14 | "isolatedModules": false, 15 | "experimentalDecorators": true, 16 | // 加上源数据 17 | "emitDecoratorMetadata": true, 18 | "noImplicitAny": false, 19 | "noImplicitReturns": true, 20 | "removeComments": true, 21 | "suppressImplicitAnyIndexErrors": true, 22 | "allowSyntheticDefaultImports": true, 23 | "allowUnreachableCode": true, 24 | "allowUnusedLabels": true, 25 | "allowJs": true, 26 | "listFiles": true, 27 | "baseUrl": "." 28 | }, 29 | "include": [ 30 | "**/*.ts" 31 | ], 32 | "exclude": [ 33 | "node_modules", 34 | "**/types/*" 35 | ], 36 | "compileOnSave": false 37 | } --------------------------------------------------------------------------------