Node.js http.ServerResponse.writableFinished用法及代碼示例

httpServerResponse.writableFinished是http模塊中的ServerResponse類的內置應用程序編程接口，用於檢查所有數據是否已刷新。

用法:

response.writableFinished

參數：此屬性不接受任何參數作為參數。

返回值：僅當所有數據均未刷新時，此屬性才返回true。

示例1：Filename：index.js

Javascript

// 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...");  
});

使用以下命令運行index.js文件：

node index.js

控製台輸出：

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

瀏覽器輸出：

粘貼localhost地址http：//localhost：3000 /。在瀏覽器的搜索欄中。

 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...");  
});

使用以下命令運行index.js文件：

node index.js

控製台輸出：

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

瀏覽器輸出：

粘貼localhost地址http：//localhost：3000 /。在瀏覽器的搜索欄中。

Data has been flushed:false

參考：https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_response_writablefinished

相關用法

注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Node.js http.ServerResponse.writableFinished Property。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。