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
当使用React钩子时，没有访问this.props.location的权限。 要获取url参数，请使用窗口对象。
const search = window.location.search;
const params = new URLSearchParams(search);
const foo = params.get('bar');
其他回答
你可以使用下面的react钩子:
如果url改变，钩子状态会更新 SSR: typeof window === "undefined"，只是检查窗口导致错误(尝试一下) 代理对象隐藏实现，因此返回undefined而不是null
这是获取搜索参数为对象的函数:
const getSearchParams = <T extends object>(): Partial<T> => {
// server side rendering
if (typeof window === "undefined") {
return {}
}
const params = new URLSearchParams(window.location.search)
return new Proxy(params, {
get(target, prop, receiver) {
return target.get(prop as string) || undefined
},
}) as T
}
然后像这样把它用作钩子:
const useSearchParams = <T extends object = any>(): Partial<T> => {
const [searchParams, setSearchParams] = useState(getSearchParams())
useEffect(() => {
setSearchParams(getSearchParams())
}, [typeof window === "undefined" ? "once" : window.location.search])
return searchParams
}
如果你的url是这样的:
/app？page=2&count=10
你可以这样读:
const { page, count } = useQueryParams();
console.log(page, count)
你可以使用这个用Typescript写的简单钩子:
const useQueryParams = (query: string = null) => {
const result: Record<string, string> = {};
new URLSearchParams(query||window.location.search).forEach((value, key) => {
result[key] = value;
});
return result;
}
用法:
// http://localhost:3000/?userId=1889&num=112
const { userId, num } = useQueryParams();
// OR
const params = useQueryParams('userId=1889&num=112');
如果你没有得到这个。道具…根据其他答案，您可能需要使用withthrouter (docs v4):
import React from 'react'
import PropTypes from 'prop-types'
import { withRouter } from 'react-router'
// A simple component that shows the pathname of the current location
class ShowTheLocation extends React.Component {
static propTypes = {
match: PropTypes.object.isRequired,
location: PropTypes.object.isRequired,
history: PropTypes.object.isRequired
}
render() {
const { match, location, history } = this.props
return (
<div>You are now at {location.pathname}</div>
)
}
}
// Create a new component that is "connected" (to borrow redux terminology) to the router.
const TwitterSsoButton = withRouter(ShowTheLocation)
// This gets around shouldComponentUpdate
withRouter(connect(...)(MyComponent))
// This does not
connect(...)(withRouter(MyComponent))
试试这个
http://localhost:4000/#/amoos?id=101
// ReactJS
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); //101
}
// VanillaJS
const id = window.location.search.split("=")[1];
console.log(id); //101
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
