正在使用非常簡單的腳本使用節點發送它們後無法設置標頭

我在Node中編寫了一個非常複雜且工作的js腳本。我升級了我的服務器，發現它失敗了。在回到基礎，我發現，這個簡單的腳本失敗，控制檯消息，如下圖所示它，當我去http://www.mapworldlive.com:8899/test從我的瀏覽器：正在使用非常簡單的腳本使用節點發送它們後無法設置標頭

var http = require("http"); 
var express = require('express') 
var app = express() 
var server = http.createServer(app); 
server.on('request', app); 
server.listen(8899); 
var chttime=new Date(),showdate=chttime.toDateString(),secs=chttime.getSeconds(),mins=chttime.getMinutes(),hrs=chttime.getHours(),day=chttime.getDay(),month=chttime.getMonth(),year=chttime.getFullYear(); 
console.log("Test Server started: "+hrs+":"+mins+" "+showdate); 

app.use('/test',function(req, res) { 
    console.log("hello world") 
    res.end() 
})

響應：

Test Server started: 14:23 Sat Feb 04 2017 
hello world 
Error: Can't set headers after they are sent.

請幫助我讓別人在我的情況下得到幫助！

堆棧跟蹤：

Error: Can't set headers after they are sent. 
    at ServerResponse.OutgoingMessage.setHeader (_http_outgoing.js:356:11) 
    at expressInit (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node_modules/express/lib/ 
iddleware/init.js:23:42) 
    at Layer.handle [as handle_request] (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node 
modules/express/lib/router/layer.js:95:5) 
    at trim_prefix (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node_modules/express/lib/ 
outer/index.js:312:13) 
    at /var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node_modules/express/lib/router/index. 
s:280:7 
    at Function.process_params (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node_modules/ 
xpress/lib/router/index.js:330:12) 
    at next (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node_modules/express/lib/router/ 
ndex.js:271:10) 
    at query (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node_modules/express/lib/middle 
are/query.js:44:5) 
    at Layer.handle [as handle_request] (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node 
modules/express/lib/router/layer.js:95:5) 
    at trim_prefix (/var/www/vhosts/mapworldlive.com/dev.mapworldlive.com/node_modules/express/lib/ 
outer/index.js:312:13)

來源

2017-02-04 Peter Lane

這是所有的代碼是什麼？ – Lex

爲了清晰起見，我將所有內容都刪除了 –

這兩條線基本一致：

var server = http.createServer(app); 

server.on('request', app);

所以我的猜測是，你正在運行的請求處理兩次，第二個發現第一已經打電話給response.end。

刪除server.on並重試。此外還有個人暗示：不要撥打res.end，而是向瀏覽器輸出內容，以便輕鬆進行測試，例如res.send('Hi!')。

來源

2017-02-04 14:59:20 CharlieBrown

正在使用非常簡單的腳本使用節點發送它們後無法設置標頭

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