node.js 请求页面保存在本地

 1 var http = require('http');
 2 var fs = require('fs');
 3 
 4 var req = http.get({ host: "www.baidu.com" });
 5 
 6 fs.open('baidu.html', 'w', function (err, fd) {
 7     if (err) {
 8         console.error(err);
 9         return;
10     }
11     var buffer;
12     req.on('response', function (res) {
13 
14         res.setEncoding('utf8');
15         res.on('data', function (data) {
16             buffer = new Buffer(data);
17             console.log(data);
18             // fs.writeFile('baidu.html', buffer);
19 
20             fs.write(fd, buffer, 0, buffer.length);
21         });
22     });
23 
24 });