Question

我是nodeJS和triyng的新手来学习它我试图从http://net.tutsplus.com/tutorials/javascript-ajax/node-js-for-beginners/执行hello world示例但我没有得到任何输出，我得到铬浏览器没有收到数据页面。
我在我的电脑上安装了apache（XAMPP），但是它没有激活，当我试图在终端中运行node http.js时，我没有得到任何输出。
我有另一个文件，hello.js，其中包含console.log('Hello World!'); 当我运行node hello.js时，我在终端输出Hello World!。但http.js无效。
http.js代码：

    // Include http module.
var http = require("http");

// Create the server. Function passed as parameter is called on every request made.
// request variable holds all request parameters
// response variable allows you to do anything with response sent to the client.
http.createServer(function (request, response) {
   // Attach listener on end event.
   // This event is called when client sent all data and is waiting for response.
   request.on("end", function () {
      // Write headers to the response.
      // 200 is HTTP status code (this one means success)
      // Second parameter holds header fields in object
      // We are sending plain text, so Content-Type should be text/plain
      response.writeHead(200, {
         'Content-Type': 'text/plain'
      });
      // Send data and end response.
      response.end('Hello HTTP!');
   });
// Listen on the 8080 port.
}).listen(8080);

Answer 1

我想您使用节点0.10.x或更高版本？它在stream api中有一些变化，通常称为Streams2。 Streams2的一个新功能是，在您完全使用流（即使它是空的）之前，end事件永远不会被触发。

如果您确实想要在end事件上发送请求，则可以使用Streams 2 API来使用该流：

var http = require('http');

http.createServer(function (request, response) {

   request.on('readable', function () {
       request.read(); // throw away the data
   });

   request.on('end', function () {

      response.writeHead(200, {
         'Content-Type': 'text/plain'
      });

      response.end('Hello HTTP!');
   });

}).listen(8080);

或者您可以将流切换为旧（流动）模式：

var http = require('http');

http.createServer(function (request, response) {

   request.resume(); // or request.on('data', function () {});

   request.on('end', function () {

      response.writeHead(200, {
         'Content-Type': 'text/plain'
      });

      response.end('Hello HTTP!');
   });

}).listen(8080);

否则，您可以立即发送回复：

var http = require('http');

http.createServer(function (request, response) {

  response.writeHead(200, {
     'Content-Type': 'text/plain'
  });

  response.end('Hello HTTP!');
}).listen(8080);

Answer 2

试试这个

//Lets require/import the HTTP module
var http = require('http');

//Lets define a port we want to listen to
const PORT=8080; 

//We need a function which handles requests and send response
function handleRequest(request, response){
    response.end('It Works!! Path Hit: ' + request.url);
}

//Create a server
var server = http.createServer(handleRequest);

//Lets start our server
server.listen(PORT, function(){
    //Callback triggered when server is successfully listening. Hurray!
    console.log("Server listening on: http://localhost:%s", PORT);
});

http：// localhost：8080 /无效

2 个答案: