如何在 nodejs 环境中处理用户代理？
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/22285921/
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
How to handle user-agent in nodejs environment?
提问by Undefined Behavior
I start to using the package "ua-parser" but the creator is too busy to mantain or commit... the npm ua-parser is outdate, and need to download directly from github. Someone know about other good package like ua-parser that is updated and can be used with expressjs? Or have a way to handle just with expressjs?
我开始使用“ua-parser”包，但创建者太忙了，无法维护或提交...... npm ua-parser 已过时，需要直接从github下载。有人知道其他好的包，如 ua-parser 已更新并可与 expressjs 一起使用吗？或者有办法只用expressjs来处理？
回答by tpae
Have you looked at:
你看过：
Or, write your own middleware:
或者，编写自己的中间件：
app.use(function(req, res, next) {
res.locals.ua = req.get('User-Agent');
next();
});
Reference: get user agent from inside jade
回答by John Williams
There are two general situations, where you just need simple matching, and you don't need a module for this, you can just use regex in Node.
一般有两种情况，你只需要简单的匹配，你不需要模块，你可以在 Node.js 中使用正则表达式。
var isIpad = !!req.headers['user-agent'].match(/iPad/);
var isAndroid = !!req.headers['user-agent'].match(/Android/);
==> true, false
The other, if you need a nice clean output of browser type, this worked best for me. https://www.npmjs.org/package/useragent
另一个，如果你需要一个漂亮干净的浏览器类型输出，这对我来说效果最好。 https://www.npmjs.org/package/useragent
回答by decoder7283
My optimal solution for Express...lightweight/fast! https://www.npmjs.com/package/express-useragent
我对 Express 的最佳解决方案...轻量级/快速！ https://www.npmjs.com/package/express-useragent
app.use(require('express-useragent').express())
Your middleware...
你的中间件...
app.use(function(req, res, next) {
req.session.useragent = {
browser: req.useragent.browser,
version: req.useragent.version,
os: req.useragent.os,
platform: req.useragent.platform
}
console.log(JSON.stringify(req.session.useragent, null ,4))
next()
}
