异常getaddrinfo enotfound

在看NodeJS开发指南这本书时,书中的一个例子,讲解http.request的.代码如下:

 1 var http = require('http');

 2 var querystring = require('querystring');

 3 var contents = querystring.stringify({

 4 name: 'byvoid',

 5 email: '[email protected]',

 6 address: 'Zijing 2#, Tsinghua University',

 7 });

 8 var options = {

 9 host: 'www.byvoid.com',

10 path: '/application/node/post.php',

11 method: 'POST',

12 headers: {

13 'Content-Type': 'application/x-www-form-urlencoded',

14 'Content-Length' : contents.length

15 }

16 };

17 var req = http.request(options, function(res) {

18 res.setEncoding('utf8');

19 res.on('data', function (data) {

20 console.log(data);

21 });

22 });

23 req.write(contents);

24 req.end();

View Code

在运行时会出现以下的error:

events.js:72
    throw er;// Unhandled 'error' event
          ^
Error: getaddrinfo ENOTFOUND
    at errnoException (dns.js:37:11)
    at Object.onanswer [as oncomplete](dns.js:124:16) 

 随后,查看了官方关于http.request的函数说明.

将代码host: 'www.byvoid.com',修改为 hostname:url.parse( 'www.byvoid.com').hostname.

即可成功运行.