Node.js http.ServerResponse.end() 方法

httpServerResponse.end()是 http 模块中服务器响应类的内置应用程序编程接口，用于向服务器发送所有标头已发送的信号。

句法：

response.end(data, Encodingtype, Callbackfunction)

参数：此方法需要三个参数

数据：必须发送的数据块
编码类型：数据的类型编码
Callback ：如有必要，用于进一步操作的回调函数。

返回值：此方法返回此服务器响应对象。

示例 1：文件名：index.js

Javascript

// Node.js program to demonstrate the  
// response.end() method
    
// 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){ 
  
  // Getting connection by using
  // response.connection method
  const value = response.connection;
    
  // Ending the response
  response.end( "port address : " + 
  value.address().port, '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..."); 
});

Javascript

// Node.js program to demonstrate the  
// response.end() method
    
// Importing http module 
var http = require('http'); 
  
// Request and response handler 
const http2Handlers = (request, response) => { 
    
  // Getting connection 
  // by using response.connection Api
  const value = response.connection;
    
  // Display result by using end()
  // api and ending the response
  response.end( "family  : " + 
  value.address().family, 'utf8', () => { 
      console.log("displaying the result..."); 
  
      httpServer.close(()=>{
          console.log("server is closed")
      })
  });
  }; 
     
// Creating http Server  and listening
// on the 3000 port
var httpServer = http.createServer(
    http2Handlers).listen(3000, () => { 
    console.log("Server is running at port 3000..."); 
});

执行命令：

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：

粘贴本地主机地址 http://localhost:3000/。在浏览器的搜索栏中。

port address : 3000

示例 2：文件名：index.js

Javascript

// Node.js program to demonstrate the  
// response.end() method
    
// Importing http module 
var http = require('http'); 
  
// Request and response handler 
const http2Handlers = (request, response) => { 
    
  // Getting connection 
  // by using response.connection Api
  const value = response.connection;
    
  // Display result by using end()
  // api and ending the response
  response.end( "family  : " + 
  value.address().family, 'utf8', () => { 
      console.log("displaying the result..."); 
  
      httpServer.close(()=>{
          console.log("server is closed")
      })
  });
  }; 
     
// Creating http Server  and listening
// on the 3000 port
var httpServer = http.createServer(
    http2Handlers).listen(3000, () => { 
    console.log("Server is running at port 3000..."); 
});

执行命令：

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：

粘贴本地主机地址 http://localhost:3000/。在浏览器的搜索栏中。

family  : IPv6

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