Node.jshttp。服务器响应.可写成品属性

原文:https://www . geesforgeks . org/node-js-http-server response-writable finished-property/

httpServerResponse . writable finished是 http 模块中类 serverrresponse 的内置应用编程接口，用于检查是否所有数据都已刷新。

语法:

response.writableFinished


参数:该属性不接受任何参数作为参数。

返回值:当且仅当所有数据都已刷新或未刷新时，该属性返回真。

示例 1:文件名:index.js

java 描述语言

// Node.js program to demonstrate the  
// response.writableFinished APi
// Importing http module 
var http = require('http'); 
// Setting up PORT 
const PORT = process.env.PORT || 3000; 
// Creating http Server 
var httpServer = http.createServer(
  function(request, response){ 
  // Checking all the data has been flushed
  // or not by using writableFinished API
  const value = response.writableFinished;
  // Display the result
  // by using end() api
  response.end( "Data has been flushed : "
             + value, 'utf8', () => { 
      console.log("displaying the result..."); 
      // Closing the server
      httpServer.close(()=>{
          console.log("server is closed")
      })
  }); 
}); 
// Listening to http Server 
httpServer.listen(PORT, () => { 
    console.log("Server is running at port 3000..."); 
});


使用以下命令运行 index.js 文件:

node index.js


控制台输出:

Server is running at port 3000...
displaying the result...
displaying the result...
server is closed
server is closed


浏览器输出:

• Paste the localhost address http://localhost:3000/. In the search bar of the browser.

Data has been flushed : false


示例 2:Filename:index . js

Javascript

// Node.js program to demonstrate the  
// response.writableFinished APi
// Importing http module 
var http = require('http'); 
// Request and response handler 
const http2Handlers = (request, response) => { 
  // checking all the data has been flushed or not
  // by using writableFinished API
  const value = response.writableFinished;
  // display result
  // by using end() api
  response.end( "Data has been flushed : " 
      + value, 'utf8', () => { 
      console.log("displaying the result..."); 
      const value1 = response.writableFinished;
      console.log("Data has been flushed "+value1);
      httpServer.close(()=>{
          console.log("server is closed")
      })
  });
  }; 
// Creating http Server 
var httpServer = http.createServer(
    http2Handlers).listen(3000, () => { 
    console.log("Server is running at port 3000..."); 
});


使用以下命令运行 index.js 文件:

node index.js


控制台输出:

Server is running at port 3000...
displaying the result...
Data has been flushed true


浏览器输出:

• Paste the localhost address http://localhost:3000/. In the search bar of the browser.

Data has been flushed : false


参考:https://nodejs . org/dist/latest-v 12 . x/docs/API/http . html # http _ response _ writable finished