http.IncomingMessage.headers是HTTP模块中IncomingMessage类的内置应用程序编程接口,用于获取所有请求/响应标头对象。
用法:
const message.headers
参数:此方法不接受任何参数作为参数。
返回值:此方法返回所有请求/响应标头对象。
范例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...");
});
使用以下命令运行index.js文件。
node index.js
输出:
Output:In-Console Server is running at port 3000... keep-alive displaying the result...
现在,在浏览器中转到http://localhost:3000 /,您将看到以下输出:
hello world
范例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...");
});
使用以下命令运行index.js文件。
node index.js
输出:
Server is running at port 3000... localhost:3000 displaying the result...
现在,在浏览器中转到http://localhost:3000 /,您将看到以下输出:
hello world!!
参考:https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_message_headers
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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.IncomingMessage.headers Method。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。