Node.js：带有多个查询参数的 Express app.get
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Node.js : Express app.get with multiple query parameters
提问by tldr
I want to query the yelp api, and have the following route:
我想查询yelp api，有如下路由：
app.get("/yelp/term/:term/location/:location", yelp.listPlaces)
When I make a GET request to
当我向
http://localhost:3000/yelp?term=food&location=austin,
http://localhost:3000/yelp?term=food&location=austin,
I get the error
我收到错误
Cannot GET /yelp?term=food&location=austin
What am I doing wrong?
我究竟做错了什么？
回答by luto
Have you tried calling it like this?
你试过这样称呼它吗？
http://localhost:30000/yelp/term/food/location/austin
The URL you need to call usually looks pretty much like the route, you could also change it to:
您需要调用的 URL 通常看起来很像路由，您也可以将其更改为：
/yelp/:location/:term
To make it a little prettier:
为了让它更漂亮一点：
http://localhost:30000/yelp/austin/food
回答by user568109
In the requested url http://localhost:3000/yelp?term=food&location=austin
在请求的网址中 http://localhost:3000/yelp?term=food&location=austin
- base url/address is
localhost:3000 - route used for matching is
/yelp - querystring url-encoded data is
?term=food&location=austini.e. data is everything after ?
- 基本网址/地址是
localhost:3000 - 用于匹配的路由是
/yelp - querystring url-encoded data is
?term=food&location=austinie data is all after ?
Query strings are not considered when peforming these matches, for example "GET /" would match the following route, as would "GET /?name=tobi".
执行这些匹配时不考虑查询字符串，例如“GET /”将匹配以下路由，“GET /?name=tobi”也是如此。
So you should either :
所以你应该：
- use app.get("/yelp") and extract the term and location from req.query like
req.query.term - use app.get("/yelp/term/:term/location/:location") but modify the url accordingly as luto described.
- 使用 app.get("/yelp") 并从 req.query 中提取术语和位置，如
req.query.term - 使用 app.get("/yelp/term/:term/location/:location") 但按照 luto 的描述相应地修改 url。
回答by Akshat Jiwan Sharma
I want to add to @luto's answer. There is no need to define query string parameters in the route. For instance the route /awill handle the request for /a?q=value.
我想添加到@luto 的答案中。不需要在路由中定义查询字符串参数。例如，路由/a将处理对 的请求/a?q=value。
The url parameters is a shortcut to define all the matches for a pattern of route so the route /a/:bwill match
url 参数是定义路由模式的所有匹配项的快捷方式，以便路由/a/:b匹配
/a/b/a/c/a/anything
/a/b/a/c/a/anything
it wont match
它不会匹配
/a/b/somethingor /a
/a/b/something或者 /a
