Question

我是服务器端渲染的新手。我正在尝试像下面那样实现它，但是显示错误。

index.html

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
    <title><%= htmlWebpackPlugin.options.title %></title>
</head>
<body>
    <div id="root"></div>
</body>
</html>

index.js

import React from 'react';
import ReactDOM from 'react-dom'
import { createStore, applyMiddleware, compose } from 'redux';
import thunk from 'redux-thunk'
import { Provider } from 'react-redux'
import rootReducer from './reducers'
import './index.css'
import Main from './Main'

const preloadedState = window.__PRELOADED_STATE__

delete window.__PRELOADED_STATE__

const store = createStore(
    rootReducer, 
    preloadedState,
    applyMiddleware(thunk)
  );

ReactDOM.hydrate( 
    <Provider store={store}>
        <Main />
    </Provider>,
    document.getElementById('root')
);

server.js

import express from 'express';
import open from 'open';
import rootReducer from '../src/reducers'
import Main from '../src/Main';
import { createStore } from 'redux';
import { Provider } from 'react-redux';
import { renderToString } from 'react-dom/server'

var app = express();
const port = 4000;

app.use(express.static('dist'));

app.get('/', (req, res) => {
    const store = createStore(rootReducer)

    const html = renderToString(
        <Provider store={store}>
          <Main />
        </Provider>
    )

    const preloadedState = store.getState();
    res.send(renderFullPage(html, preloadedState))
});

function renderFullPage(html, preloadedState) {
    return `
    <!doctype html>
    <html>
      <body>
        <div id="root">${html}</div>
        <script>
          window.__PRELOADED_STATE__ = ${JSON.stringify(preloadedState).replace(/</g,'\\u003c')}
        </script>
      </body>
    </html>
    `
}

app.listen(port, function (err) {
  if (err) {
        console.log(err);
    } else {
        open('http://localhost:' + port);
    }
})

当我尝试运行SSR时，显示以下错误。我不明白我在做什么错？

Warning: Expected server HTML to contain a matching <div> in <div>.

任何帮助将不胜感激。

编辑：

import React, { Component } from 'react';
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom'; 
import Content from './components/Content';
import PageNotFound from './components/PageNotFound'
import Movie from './components/Movie';

class Main extends Component {

    render() {   
        return ( 
            <div className="main">
                <Router>
                    <Switch>
                        <Route exact path='/' component={Content} /> 
                        <Route path='/search/:query' component={Content} />
                        <Route path='/film/:id' component={Movie} /> 
                        <Route path='*' component={PageNotFound} />
                    </Switch>  
                </Router>      
            </div>
        );
    }
}

export default Main;

这不是给定链接的重复，因为我正在使用SSR。那么为什么我应该像使用SSR一样使用渲染而不是水合呢？

预期的服务器HTML在服务器端呈现中应包含匹配的<div>

0 个答案: