Node.js http.ServerResponse.writableFinished用法及代码示例

httpServerResponse.writableFinished是http模块中的ServerResponse类的内置应用程序编程接口，用于检查所有数据是否已刷新。

用法:

response.writableFinished

参数：此属性不接受任何参数作为参数。

返回值：仅当所有数据均未刷新时，此属性才返回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：

粘贴localhost地址http：//localhost：3000 /。在浏览器的搜索栏中。

 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：

粘贴localhost地址http：//localhost：3000 /。在浏览器的搜索栏中。

Data has been flushed:false

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

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Node.js http.ServerResponse.writableFinished Property。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。