Express 应用程序作为 http.createServer 的参数

Posted 2023-03-13

【中文标题】Express 应用程序作为 http.createServer 的参数

【英文标题】：Express app as argument of http.createServer

【发布时间】：2017-02-01 01:41:27

【问题描述】：

当我想使用 express.Application 作为 http.createServer 的参数时，我遇到了这个错误：

error TS2345: Argument of type 'Application' is not assignable to parameter of type '(request: IncomingMessage, response: ServerResponse) => void'.

我的代码：

import * as express from "express"
let app: express.Application = express();
...
import * as http from "http"
let httpServer = http.createServer(app);
httpServer.listen(process.env.HTTP_PORT, (): void => 
    console.log(`HTTP Listen on $process.env.HTTP_PORT`)
);

typings.json：

  "dependencies": 
    "body-parser": "registry:npm/body-parser#1.15.2+20160815132839",
    "express": "registry:npm/express#4.14.0+20160911114220"
  ,
  "globalDependencies": 
    "dotenv": "registry:dt/dotenv#2.0.0+20160327131627",
    "errorhandler": "registry:dt/errorhandler#0.0.0+20160316155526",
    "express-serve-static-core": "registry:dt/express-serve-static-core#4.0.0+20160914120416",
    "method-override": "registry:dt/method-override#0.0.0+20160317120654",
    "morgan": "registry:dt/morgan#1.7.0+20160524142355",
    "node": "registry:dt/node#6.0.0+20160921192128"
  

【参考方案1】：

我解决了。 只需要更新类型。我当前的 typings.json 文件：

  "globalDependencies": 
    "dotenv": "registry:dt/dotenv#2.0.0+20160327131627",
    "errorhandler": "registry:dt/errorhandler#0.0.0+20160316155526",
    "express": "registry:dt/express#4.0.0+20160708185218",
    "express-serve-static-core": "registry:dt/express-serve-static-core#4.0.0+20160916114806",
    "method-override": "registry:dt/method-override#0.0.0+20160317120654",
    "morgan": "registry:dt/morgan#1.7.0+20160524142355",
    "node": "registry:dt/node#6.0.0+20160921192128",
    "serve-favicon": "registry:dt/serve-favicon#0.0.0+20160316155526"
  ,
  "dependencies": 
    "body-parser": "registry:npm/body-parser#1.15.2+20160815132839",
    "serve-static": "registry:npm/serve-static#1.11.1+20160810053450"
  

【讨论】：

看起来你打字的不同之处在于你降级了 Express 版本。那正确吗？如果您提供有关更改内容和原因的更多信息，将会很有帮助。