如前所述，我正在尝试加快Node.js的速度。以下代码似乎可以正常工作（除了“ site”由于某种原因而未被识别）……其余的都可以正常工作：
var http = require('http');
var url = require('url');
var querystring = require('querystring');
var server = http.createServer(function(req, res){
var params = querystring.parse(url.parse(req.url).query);
var MyURL = url.parse(req.url).search; //example returns "?year=2017&month=february"
var site = url.parse(req.url).host; //example returns "localhost:8080"
res.writeHead(200, {"Content-Type": "text/plain"});
if ('lat' in params && 'lng' in params){
res.write('Coordinates passed ' + params['lat'] + ' ' + params['lng']);
console.log(MyURL);
res.write('Page Default: ' + site);
console.log('Page default ' + site);
}
else {
res.write('Coordinates not passed');
}
res.end();
});
server.listen(8080)
...但是，当我添加Express模块时...我的命令似乎被忽略了...如下所示：
var http = require('http');
var url = require('url');
var querystring = require('querystring');
var express = require('express');
var app = express();
var server = http.createServer(function(req, res){
var params = querystring.parse(url.parse(req.url).query);
var MyURL = url.parse(req.url).search; //example returns "?year=2017&month=february"
var site = url.parse(req.url).host; //example returns "localhost:8080"
res.writeHead(200, {"Content-Type": "text/plain"});
if ('lat' in params && 'lng' in params){
res.write('Coordinates passed ' + params['lat'] + ' ' + params['lng']);
console.log(MyURL);
res.write('Page Default: ' + site);
console.log('Page default ' + site);
}
else {
res.write('Coordinates not passed');
}
app.get('/', function(req, res) {
res.setHeader('Content-Type', 'text/plain');
res.write('You are connected to a Test');
console.log('This is a test...!');
});
app.get('/index.html', function(req, res) {
var page = url.parse(req.url).pathname; //example returns "index.html"
res.write('You are connected to the index.html page on this test site!');
res.write('Page Default: ' + page);
console.log(page);
});
app.use(function(req, res, next){
res.setHeader('Content-Type', 'text/plain');
res.send(404, 'Page cannot be found!');
});
res.end();
});
server.listen(8080)
“应用”均不存在。函数似乎被解雇了...有人可以解释我在这里不明白的内容吗？我提前谢谢你。问候...！