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
不是反应的方式，但我相信这个单行函数可以帮助你:)
const getQueryParams = (query = null) => [...(new URLSearchParams(query||window.location.search||"")).entries()].reduce((a,[k,v])=>(a[k]=v,a),{});
或:
const getQueryParams = (query = null) => (query||window.location.search.replace('?','')).split('&').map(e=>e.split('=').map(decodeURIComponent)).reduce((r,[k,v])=>(r[k]=v,r),{});
或完整版:
const getQueryParams = (query = null) => {
return (
(query || window.location.search.replace("?", ""))
// get array of KeyValue pairs
.split("&")
// Decode values
.map((pair) => {
let [key, val] = pair.split("=");
return [key, decodeURIComponent(val || "")];
})
// array to object
.reduce((result, [key, val]) => {
result[key] = val;
return result;
}, {})
);
};
例子: URL:…?= = 1 b =建发集团有限公司的测试 代码:
getQueryParams()
//=> {a: "1", b: "c", d: "test"}
getQueryParams('type=user&name=Jack&age=22')
//=> {type: "user", name: "Jack", age: "22" }
其他回答
你可以创建一个简单的钩子来从当前位置提取搜索参数:
import React from 'react';
import { useLocation } from 'react-router-dom';
export function useSearchParams<ParamNames extends string[]>(...parameterNames: ParamNames): Record<ParamNames[number], string | null> {
const { search } = useLocation();
return React.useMemo(() => { // recalculate only when 'search' or arguments changed
const searchParams = new URLSearchParams(search);
return parameterNames.reduce((accumulator, parameterName: ParamNames[number]) => {
accumulator[ parameterName ] = searchParams.get(parameterName);
return accumulator;
}, {} as Record<ParamNames[number], string | null>);
}, [ search, parameterNames.join(',') ]); // join for sake of reducing array of strings to simple, comparable string
}
然后你可以像这样在你的功能组件中使用它:
// current url: http://localhost:8000/#/signin?_k=v9ifuf&__firebase_request_key=blablabla
const { __firebase_request_key } = useSearchParams('__firebase_request_key');
// current url: http://localhost:3000/home?b=value
const searchParams = useSearchParameters('a', 'b'); // {a: null, b: 'value'}
React路由器5.1+
5.1引入了各种钩子，如useLocation和useParams，可以在这里使用。
例子:
<Route path="/test/:slug" component={Dashboard} />
如果我们去参观
http://localhost:3000/test/signin?_k=v9ifuf&__firebase_request_key=blablabla
你可以把它找回来
import { useLocation } from 'react-router';
import queryString from 'query-string';
const Dashboard: React.FC = React.memo((props) => {
const location = useLocation();
console.log(queryString.parse(location.search));
// {__firebase_request_key: "blablabla", _k: "v9ifuf"}
...
return <p>Example</p>;
}
http://localhost:8000/#/signin?id=12345
import React from "react";
import { useLocation } from "react-router-dom";
const MyComponent = () => {
const search = useLocation().search;
const id=new URLSearchParams(search).get("id");
console.log(id);//12345
}
使用let {redirectParam} = useParams();如果你用的是功能组件
它是一个类组件
constructor (props) {
super(props);
console.log(props);
console.log(props.match.params.redirectParam)
}
async componentDidMount(){
console.log(this.props.match.params.redirectParam)
}
你可以检查react-router，简单地说，你可以使用代码获取查询参数，只要你在路由器中定义:
this.props.params.userId
