javascript - 无法通过 react 路由器 dom v6 beta 传递状态，状态为空

Question

这个问题在这里已经有了答案:





How to pass data from a page to another page using react router

(4 个回答)


3个月前关闭。




应用程序.js 文件

export default function App() {
    return (
        <div className="h-100">
            <Routes>
             <Link to={
                {
                    pathname: "/posts",
                    state: {test: 'test'}
                }
                }>Posts</Link>
                <Route path="/" element={<Home/>}/>
                <Route path="/login" element={<Login/>}/>
                <Route path="/posts" element={<Posts/>}/>
            </Routes>
        </div>
    )
}

期望传递状态，一些数据从一页到另一页
当使用 useLocation 从另一个页面获取状态时，状态为 null
index.js 文件

import {BrowserRouter as Router} from "react-router-dom";
import App from "./App";

ReactDOM.render(
    <React.StrictMode>
        <Router>
            <App/>
        </Router>
    </React.StrictMode>
    ,
    document.getElementById('root')
);

Posts.js 文件

const location=useLocation()
console.log(location);

输出

Object { pathname: "/posts", search: "", hash: "", state: null, key: "hpuuzep5" }

包.json

{
  "name": "chance",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.11.9",
    "@testing-library/react": "^11.2.5",
    "@testing-library/user-event": "^12.6.3",
    "axios": "^0.21.1",
    "bootstrap": "^5.0.0-beta3",
    "history": "^5.0.0",
    "ramda": "^0.27.1",
    "react": "^17.0.1",
    "react-dom": "^17.0.1",
    "react-router": "^5.2.0",
    "react-router-dom": "^5.2.0",
    "react-scripts": "4.0.2",
    "styled-components": "^5.2.3",
    "web-vitals": "^1.1.0"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

我不能从 react-router-dom 导入交换机，它说交换机不是从 react 路由器 dom 导出的，我认为已经正确设置了我的路由，错误在哪里，我无法将状态从一条路由传递到另一条路由

Answer 1

我可以通过这样做获得状态:

<Link
  to={"/posts"}
  state={{test: 'test'}}>
    Posts
</Link>

我打开了类型声明，终于意识到 state 是一个 Prop ，而不是对象 https://github.com/ReactTraining/react-router/blob/dev/docs/api-reference.md#link 的一部分