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[英]Node.js express-generator - app can't run due to TypeError: app.set is not a function
[英]JavaScript (Node.js) : app.set('port', port); ^ TypeError: app.set is not a function
這是當我嘗試運行一個打印常見“Hello World”的簡單程序時出現的錯誤代碼。
app.set('port', port);
^
TypeError: app.set is not a function
at Object.<anonymous> (/home/xpuser/Desktop/Nodetest/bin/www:16:5)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:139:18)
at node.js:968:3
編寫“module.exports = app;” 這是出現的錯誤:
module.exports = app;
^
ReferenceError: app is not defined
at Object. <anonymous> (/home/xpuser/Desktop/Nodetest/app.js:23:18)
at Module._compile (module.js: 409: 26)
at Object.Module._extensions..js (module.js: 416: 10)
at Module.Load (module.js: 343: 32)
at Function.Module._load (module.js: 300: 12)
at Module.require (module.js: 353: 17)
at require (internal / module.js: 12: 17)
at Object. <anonymous> (/ home / xpuser / Desktop / Nodetest / bin / www: 7: 11)
at Module._compile (module.js: 409: 26)
at Object.Module._extensions..js (module.js: 416: 10)
我認為您正在嘗試使用“Express”模塊,因此您需要在文件中添加以下內容:
var express = require('express');
var app = express();
然后你可以設置:
var port = "1000";
app.set('port', port);
module.exports = app;
如果你有 app = require("../app"),那么只要確保在 app.js 的底部有: module.exports = app
,當你在 /bin/www 中需要它時,它實際上抓住了代碼。
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