http.IncomingMessage.headers是HTTP模塊中IncomingMessage類的內置應用程序編程接口,用於獲取所有請求/響應標頭對象。
用法:
const message.headers
參數:此方法不接受任何參數作為參數。
返回值:此方法返回所有請求/響應標頭對象。
範例1:
文件名:index.js
Javascript
// Node.js program to demonstrate the
// request.headers 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 request/reponse header
// by using request.complete method
const value = request.headers;
// Display header
console.log(value.connection)
// Display result
response.end("hello world", 'utf8', () => {
console.log("displaying the result...");
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
輸出:
Output:In-Console Server is running at port 3000... keep-alive displaying the result...
現在,在瀏覽器中轉到http://localhost:3000 /,您將看到以下輸出:
hello world
範例2:
文件名:index.js
Javascript
// Node.js program to demonstrate the
// request.headers Method
// Importing http module
var http = require('http');
// Request and response handler
const http2Handlers = (request, response) => {
// Getting request/reponse header
// by using request.complete method
const value = request.headers;
// Display header
console.log(value.host)
// Display result
response.end("hello world!!", 'utf8', () => {
console.log("displaying the result...");
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
輸出:
Server is running at port 3000... localhost:3000 displaying the result...
現在,在瀏覽器中轉到http://localhost:3000 /,您將看到以下輸出:
hello world!!
參考:https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_message_headers
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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.IncomingMessage.headers Method。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。