如何访问“?"后的GET参数在快递? [英] How to access the GET parameters after "?" in Express?

问题描述

我知道如何为这样的查询获取参数:

I know how to get the params for queries like this:

app.get('/sample/:id', routes.sample);

在这种情况下，我可以使用req.params.id 来获取参数(例如/sample/2 中的2).

In this case, I can use req.params.id to get the parameter (e.g. 2 in /sample/2).

但是，对于像 /sample/2?color=red 这样的 url，我如何访问变量 color?

However, for url like /sample/2?color=red, how can I access the variable color?

我尝试了 req.params.color 但它没有用.

I tried req.params.color but it didn't work.

推荐答案

所以，查看完快速参考，我发现 req.query.color 会返回我正在寻找的值.

So, after checking out the express reference, I found that req.query.color would return me the value I'm looking for.

req.params 是指 URL 中带有 ':' 的项目，req.query 是指与 '?' 关联的项目

req.params refers to items with a ':' in the URL and req.query refers to items associated with the '?'

示例:

GET /something?color1=red&color2=blue

然后在 express 中，处理程序:

Then in express, the handler:

app.get('/something', (req, res) => {
    req.query.color1 === 'red'  // true
    req.query.color2 === 'blue' // true
})

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