如何在我的路由中定义路由。jsx文件捕获__firebase_request_key参数值从一个URL生成的Twitter的单点登录过程后，从他们的服务器重定向?
http://localhost:8000/#/signin?_k=v9ifuf&__firebase_request_key=blablabla
我尝试了以下路由配置，但:redirectParam没有捕获提到的参数:
<Router>
<Route path="/" component={Main}>
<Route path="signin" component={SignIn}>
<Route path=":redirectParam" component={TwitterSsoButton} />
</Route>
</Route>
</Router>
当前回答
在typescript中，参见下面的示例片段:
const getQueryParams = (s?: string): Map<string, string> => {
if (!s || typeof s !== 'string' || s.length < 2) {
return new Map();
}
const a: [string, string][] = s
.substr(1) // remove `?`
.split('&') // split by `&`
.map(x => {
const a = x.split('=');
return [a[0], a[1]];
}); // split by `=`
return new Map(a);
};
在react中使用react-router-dom，你可以做
const {useLocation} from 'react-router-dom';
const s = useLocation().search;
const m = getQueryParams(s);
参见下面的例子
//下面是上面转换和缩小的ts函数 如果(const getQueryParams = t = > {! t | |“字符串”!=typeof t||t.length<2)return new Map;const r=t.substr(1).split("&")。地图(t = > {const r = t.split(" = ");返回[r[0],[1]]});返回新地图(r)}; //一个示例查询字符串 Const s = '?__arg1 = value1&arg2 = value2 ' getQueryParams(s) console.log (m.get (__arg1)) console.log (m.get(最长)) Console.log (m.t get('arg3')) //不存在，返回undefined
其他回答
React Router v4不再有props.location.query对象(见github讨论)。因此，已接受的答案将不适用于较新的项目。
v4的解决方案是使用外部库查询字符串来解析props.location.search
const qs = require('query-string');
//or
import * as qs from 'query-string';
console.log(location.search);
//=> '?foo=bar'
const parsed = qs.parse(location.search);
console.log(parsed);
//=> {foo: 'bar'}
在需要访问可以使用的参数的组件中
this.props.location.state.from.search
这将显示整个查询字符串(在?标志)
从v4开始，React路由器不再直接在其location对象中提供查询参数。原因是
There are a number of popular packages that do query string parsing/stringifying slightly differently, and each of these differences might be the "correct" way for some users and "incorrect" for others. If React Router picked the "right" one, it would only be right for some people. Then, it would need to add a way for other users to substitute in their preferred query parsing package. There is no internal use of the search string by React Router that requires it to parse the key-value pairs, so it doesn't have a need to pick which one of these should be "right".
包含了这个之后，只解析location会更有意义。在需要查询对象的视图组件中搜索。
你可以通过覆盖react-router中的withRouter来实现这一点
customWithRouter.js
import { compose, withPropsOnChange } from 'recompose';
import { withRouter } from 'react-router';
import queryString from 'query-string';
const propsWithQuery = withPropsOnChange(
['location', 'match'],
({ location, match }) => {
return {
location: {
...location,
query: queryString.parse(location.search)
},
match
};
}
);
export default compose(withRouter, propsWithQuery)
也许有点晚了，但是这个react钩子可以帮助你在URL查询中获取/设置值:https://github.com/rudyhuynh/use-url-search-params(由我编写)。
不管有没有反应路由器，它都可以工作。 下面是您案例中的代码示例:
import React from "react";
import { useUrlSearchParams } from "use-url-search-params";
const MyComponent = () => {
const [params, setParams] = useUrlSearchParams()
return (
<div>
__firebase_request_key: {params.__firebase_request_key}
</div>
)
}
React路由器v5.1引入了钩子:
For
<Route path="/posts/:id">
<BlogPost />
</Route>
你可以通过hook访问params / id:
const { id } = useParams();
更多的在这里。
