node.js 在 express 中使用 app.configure
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/18637148/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Using app.configure in express
提问by JayC
I found some code where they set up Express without using app.configureand I was wondering, what's the difference between using app.configurewithout an environment specifier and not using it?
我发现了一些代码，他们在不使用的情况下设置了 Express app.configure，我想知道，在app.configure没有环境说明符的情况下使用和不使用它有什么区别？
In other words, what's the difference between this:
换句话说，这之间有什么区别：
var app = require(express);
app.configure(function(){
app.set('port', process.env.PORT || config.port);
app.use(express.logger('dev')); /* 'default', 'short', 'tiny', 'dev' */
app.use(express.bodyParser());
app.use(express.static(path.join(__dirname, 'site')));
}
and this:
和这个：
var app = require(express);
app.set('port', process.env.PORT || config.port);
app.use(express.logger('dev')); /* 'default', 'short', 'tiny', 'dev' */
app.use(express.bodyParser());
app.use(express.static(path.join(__dirname, 'site')));
Thanks.
谢谢。
回答by Jason Leung
It is optional and remain for legacy reason, according to the doc. In your example, the two piece of codes have no difference at all. http://expressjs.com/api.html#app.configure
根据文档，它是可选的，并且由于遗留原因而保留。在您的示例中，这两段代码根本没有区别。 http://expressjs.com/api.html#app.configure
Update 2015:
2015 年更新：
@IlanFrumer points out that app.configure is removed in Express 4.x. If you followed some outdated tutorials and wondering why it didn't work, You should remove app.configure(function(){ ... }. Like this:
@IlanFrumer 指出在 Express 4.x 中删除了 app.configure。如果您遵循了一些过时的教程并想知道为什么它不起作用，您应该删除app.configure(function(){ ... }. 像这样：
var express = require('express');
var app = express();
app.use(...);
app.use(...);
app.get('/', function (req, res) {
...
});
