node.js - 如何返回url中请求的字符串？

Question

如何将 get 请求字符串转化为可行的字符串，例如如果有人访问 www.mypage.com/yo ，我怎样才能让 Node 将“yo”返回到变量中？

var http = require('http');

var server = http.createServer(function (request, response) {
  response.writeHead(200, {"Content-Type": "text/plain"});
  var stringrequested = ??????
  response.end(stringrequested);

});

// Listen on port 8000, IP defaults to 127.0.0.1
server.listen(8000);

// Put a friendly message on the terminal
console.log("Server running");

Answer 1

request.url 包含请求的 uri:

var stringrqeuested = request.url; // /yo

如果您只想要“yo”，您可以像这样删除前导斜杠:

var stringrqeuested = request.url.substr(1); // yo

但是 request.url 还包含查询字符串，例如/yo?a=b&c=d。如果您不希望这样，则需要解析 url:

var stringrequested = require('url').parse(request.url).pathname; // /yo
var stringrequested = require('url').parse(request.url).pathname.substr(1); // yo

这是来自 documentation 的示例.

node> require('url').parse('/status?name=ryan', true)
{ href: '/status?name=ryan',
  search: '?name=ryan',
  query: { name: 'ryan' },
  pathname: '/status' }