详解React 服务端渲染方案完美的解决方案(4)

日期：2020-05-11 栏目：程序人生浏览：次

import { renderToString } from 'react-dom/server'
import { Provider } from 'react-redux'
import { createStore } from 'redux'
import App from './App'
import rootReducer from './reducers'

const store = createStore(rootReducer)

async function(ctx) {
  await ctx.render('index', {
    root: renderToString(
      <Provider store={store}>
        <App />
      </Provider>
    ),
    state: store.getState()
  })
}

HTML

<body>
  <div id="root"><%- root %></div>
  <script>
    window.REDUX_STATE = <%- JSON.stringify(state) %>
  </script>
</body>

客户端

import { render } from 'react-dom'
import { Provider } from 'react-redux'
import { createStore } from 'redux'
import App from './App'
import rootReducer from './reducers'

const store = createStore(rootReducer, window.REDUX_STATE)

render(
  <Provider store={store}>
    <App />
  </Provider>, 
  document.getElementById('root')
)

路由方案

客户端路由的好处就不必多说了，客户端可以不依赖服务端，根据hash方式或者调用history API，不同的URL渲染不同的视图，实现无缝的页面切换，用户体验极佳。但服务端渲染不同的地方在于，在渲染之前，必须根据URL正确找到相匹配的组件返回给客户端。

React Router为服务端渲染提供了两个API：

- match 在渲染之前根据URL匹配路由组件
- RoutingContext 以同步的方式渲染路由组件

服务端

import { renderToString } from 'react-dom/server'
import { Provider } from 'react-redux'
import { createStore } from 'redux'
import { match, RouterContext } from 'react-router'
import rootReducer from './reducers'
import routes from './routes'

const store = createStore(rootReducer)

async function clientRoute(ctx, next) {
  let _renderProps

  match({routes, location: ctx.url}, (error, redirectLocation, renderProps) => {
    _renderProps = renderProps
  })

  if (_renderProps) {
    await ctx.render('index', {
      root: renderToString(
        <Provider store={store}>
          <RouterContext {..._renderProps} />
        </Provider>
      ),
      state: store.getState()
    })
  } else {
    await next()
  }
}

客户端

import { Route, IndexRoute } from 'react-router'
import Common from './Common'
import Home from './Home'
import Explore from './Explore'
import About from './About'

const routes = (
  <Route path="/" component={Common}>
    <IndexRoute component={Home} />
    <Route path="explore" component={Explore} />
    <Route path="about" component={About} />
  </Route>
)

export default routes

转载注明出处：http://www.heiqu.com/445.html

详解React 服务端渲染方案完美的解决方案(4)

相关推荐