重定向不在 React 应用程序中重定向

Question

我正在尝试从 react-router-dom 实现 Redirect，它在 URL 中重定向，但没有重新呈现相应的组件。

import React, {useEffect, useState} from 'react';
import axios from 'axios';

import * as OnfidoSDK from 'onfido-sdk-ui/dist/onfido.min.js';
import 'onfido-sdk-ui/dist/style.css';
import {Redirect} from 'react-router-dom';

const onfidoContainerId = 'onfido-sdk-wrapper';
const transmitAPI = 'third/party/api/url';

const useOnfidoFetch = (URL) => {
  const [token, setToken] = useState();
  const [id, setId] = useState();
  const [isClear, setIsClear] = useState(false);

  useEffect(() => {
    axios
      .get("http://localhost:5000/post_stuff")
      .then((response) => response.data.data.data.json_data)
      .then((json_data) => {
        console.log("this is the json data", json_data);
        const id = json_data.applicant_id;
        const token = json_data.onfido_sdk_token;
        setId(id);
        setToken(token);
      });
  }, [URL]);

  useEffect(() => {
    if (!token) return;
    console.log("this is working!");
    onfidoOut = OnfidoSDK.init({
      token,
      containerId: "root",
      steps: [
        {
          type: "welcome",
          options: {
            title: "Open your new bank account",
          },
        },
        "document",
      ],
      onComplete: function (data) {
        console.log("everything is complete");
        console.log("this is the applicant id", id);
        let obj;
        axios
          .post("http://localhost:5000/post_id", {
            applicant_id: id,
          })
          .then((response) => {
            obj = response.data.data.data.json_data.result;
            setReceivedResults(obj === "clear");
          });
          if (setReceivedResults) {
            onfidoOut.tearDown();
            return <Redirect to="/result" />
          } else {
             return null;
          }
      },
    });
  }, [id, token]);
};

export default function() {
  const URL = `${transmitAPI}/anonymous_invoke?aid=onfido_webapp`;
  const result = useOnfidoFetch(URL, {});

     return (
        <div id={onfidoContainerId} />
     )
}

我在控制台中没有收到任何错误。这是包含我所有组件的 App.js 文件：

import Landing from './components/Landing';
import Onfido from './components/Onfido';
import Result from './components/Result';

export default () => {
   return (
      <div>
        <StylesProvider>
          <BrowserRouter>
           <Switch>
            <Route exact path="/onfido" component={Onfido} />
            <Route exact path="/result" component={Result} />
            <Route path="/" component={Landing} />
           </Switch>
          </BrowserRouter>
        </StylesProvider>
      </div>
   );
};

Answer 1

Redirect 是一个必须渲染才能产生效果的组件，您正在从钩子中返回它，但没有对它做任何事情。

您正在寻找 history.push('/result')。它的用途相同，但不是渲染负责重定向的组件，而是通过更新 history.

以编程方式执行此操作

请参阅 useHistory 上的文档。

重定向不在 React 应用程序中重定向

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