您必须使用setState来设置一个属性来呈现<Redirect>您的render()方法内部。

例如

class MyComponent extends React.Component {
  state = {
    redirect: false
  }

  handleSubmit () {
    axios.post(/**/)
      .then(() => this.setState({ redirect: true }));
  }

  render () {
    const { redirect } = this.state;

     if (redirect) {
       return <Redirect to='/somewhere'/>;
     }

     return <RenderYourForm/>;
}

你也可以在官方文档中看到一个例子：https : //reacttraining.com/react-router/web/example/auth-workflow

也就是说，我建议您将 API 调用放在服务或其他东西中。然后你可以使用该history对象以编程方式进行路由。这就是与 redux 集成的工作方式。

但我想你有理由这样做。

这里有一个小例子作为对标题的回应，因为所有提到的例子在我看来都很复杂，就像官方的一样。

您应该知道如何转译 es2015 以及如何让您的服务器能够处理重定向。这是express的一个片段。可以在此处找到与此相关的更多信息。

确保将其放在所有其他路线下方。

const app = express();
app.use(express.static('distApp'));

/**
 * Enable routing with React.
 */
app.get('*', (req, res) => {
  res.sendFile(path.resolve('distApp', 'index.html'));
});

这是 .jsx 文件。请注意最长的路径是如何首先出现的，并且 get 更一般。对于最一般的路由，使用精确属性。

// Relative imports
import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter, Route, Switch, Redirect } from 'react-router-dom';

// Absolute imports
import YourReactComp from './YourReactComp.jsx';

const root = document.getElementById('root');

const MainPage= () => (
  <div>Main Page</div>
);

const EditPage= () => (
  <div>Edit Page</div>
);

const NoMatch = () => (
  <p>No Match</p>
);

const RoutedApp = () => (
  <BrowserRouter >
    <Switch>
      <Route path="/items/:id" component={EditPage} />
      <Route exact path="/items" component={MainPage} />          
      <Route path="/yourReactComp" component={YourReactComp} />
      <Route exact path="/" render={() => (<Redirect to="/items" />)} />          
      <Route path="*" component={NoMatch} />          
    </Switch>
  </BrowserRouter>
);

ReactDOM.render(<RoutedApp />, root); 

由于useHistory() 钩子， React Router v5 现在允许您使用 history.push() 简单地重定向：

import { useHistory } from "react-router-dom"

function HomeButton() {
  let history = useHistory()

  function handleClick() {
    history.push("/home")
  }

  return (
    <button type="button" onClick={handleClick}>
      Go home
    </button>
  )
}

只需在您喜欢的任何函数中调用它。

this.props.history.push('/main');

尝试这样的事情。

import React, { PropTypes } from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter } from 'react-router-dom';
import { Redirect } from 'react-router'

import SignUpForm from '../../register/components/SignUpForm';
import styles from './PagesStyles.css';
import axios from 'axios';
import Footer from '../../shared/components/Footer';

class SignUpPage extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      errors: {},
      callbackResponse: null,
      client: {
        userclient: '',
        clientname: '',
        clientbusinessname: '',
        password: '',
        confirmPassword: ''
      }
    };

    this.processForm = this.processForm.bind(this);
    this.changeClient = this.changeClient.bind(this);
  }

  changeClient(event) {
    const field = event.target.name;
    const client = this.state.client;
    client[field] = event.target.value;

    this.setState({
      client
    });
  }

  processForm(event) {
    event.preventDefault();

    const userclient = this.state.client.userclient;
    const clientname = this.state.client.clientname;
    const clientbusinessname = this.state.client.clientbusinessname;
    const password = this.state.client.password;
    const confirmPassword = this.state.client.confirmPassword;
    const formData = { userclient, clientname, clientbusinessname, password, confirmPassword };

    axios.post('/signup', formData, { headers: {'Accept': 'application/json'} })
      .then((response) => {
        this.setState({
          callbackResponse: {response.data},
        });
      }).catch((error) => {
        const errors = error.response.data.errors ? error.response.data.errors : {};
        errors.summary = error.response.data.message;

        this.setState({
          errors
        });
      });
  }

const renderMe = ()=>{
return(
this.state.callbackResponse
?  <SignUpForm 
            onSubmit={this.processForm}
            onChange={this.changeClient}
            errors={this.state.errors}
            client={this.state.client}
          />
: <Redirect to="/"/>
)}

  render() {
    return (
      <div className={styles.section}>
        <div className={styles.container}>
          <img src={require('./images/lisa_principal_bg.png')} className={styles.fullImageBackground} />
         {renderMe()}
          <Footer />
        </div>
      </div>
    );
  }
}

export default SignUpPage;