我正在尝试做一个简单的服务器来回答 url /page1 和 /page2; 这是模块 dispatcher.js:
var HttpDispatcher = function() {
this.listeners = { get: [ ], post: [ ] };
this.errorListener = function() { }
}
HttpDispatcher.prototype.on = function(method, url, cb) {
this.listeners[method].push({
cb: cb,
url: url
});
}
HttpDispatcher.prototype.onGet = function(url, cb) {
this.on('get', url, cb);
}
HttpDispatcher.prototype.onPost = function(url, cb) {
this.on('post', url, cb);
}
HttpDispatcher.prototype.onError = function(cb) {
this.errorListener = cb;
}
HttpDispatcher.prototype.dispatch = function(req, res) {
var parsedUrl = require('url').parse(req.url, true);
var method = req.method.toLowerCase();
if(this.listener[method][parsedUrl.pathname]) this.listener[method][parsedUrl.pathname](req, res)
else this.errorListener(req, res);
}
module.exports = new HttpDispatcher();
这是服务器:
var dispatcher = require('./node_modules/httpdispatcher');
var http = require('http');
dispatcher.onGet("/page1", function(req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Page One');
});
dispatcher.onPost("/page2", function(req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Page Two');
});
http.createServer(function (req, res) {
dispatcher.dispatch(req, res);
}).listen(80, '127.0.0.1');
但是当我尝试执行服务器时,我得到了错误:
D:\Works\Web Resources\NODE JS\node_modules\httpdispatcher.js:33
if(this.listener[method][parsedUrl.pathname]) this.listener[method][parsedUr ^ TypeError: Cannot read property 'get' of不明确的
有谁知道为什么?