React-router v4 - 无法获取* url * [英] React-router v4 - cannot GET *url*

问题描述

我开始使用react-router v4。我的app.js中有一个简单的< Router> ，带有一些导航链接（参见下面的代码）。如果我导航到 localhost / vocabulary ，路由器会将我重定向到正确的页面。但是，当我之后按下重新加载（F5）（ localhost / vocabulary ）时，所有内容都会消失，浏览器报告无法获取/词汇。怎么可能？有人能给我任何线索如何解决（正确重新加载页面）？

I started to use react-router v4. I have a simple <Router> in my app.js with some navigation links (see code below). If I navigate to localhost/vocabulary, router redirects me to the right page. However, when I press reload (F5) afterwards (localhost/vocabulary), all content disappear and browser report Cannot GET /vocabulary. How is that possible? Can somebody gives me any clue how to solve that (reload the page correctly)?

App.js：

import React from 'react'
import ReactDOM from 'react-dom'
import { BrowserRouter as Router, Route, Link } from 'react-router-dom'
import { Switch, Redirect } from 'react-router'
import Login from './pages/Login'
import Vocabulary from './pages/Vocabulary'

const appContainer = document.getElementById('app')

ReactDOM.render(
  <Router>
    <div>
        <ul>
          <li><Link to="/">Home</Link></li>
          <li><Link to="/vocabulary">Vocabulary</Link></li>
        </ul>
        <Switch>
          <Route exact path="/" component={Login} />
          <Route exact path="/vocabulary" component={Vocabulary} />
        </Switch>
    </div>
  </Router>,
appContainer)

推荐答案

我假设你正在使用Webpack。如果是这样，在webpack配置中添加一些内容应该可以解决问题。具体来说， output.publicPath ='/'和 devServer.historyApiFallback = true 。下面是一个示例webpack配置，下面使用了^并修复了我的刷新问题。如果您对为什么感到好奇，请此会有所帮助。

I'm assuming you're using Webpack. If so, adding a few things to your webpack config should solve the issue. Specifically, output.publicPath = '/' and devServer.historyApiFallback = true. Here's an example webpack config below which uses both of ^ and fixes the refresh issue for me. If you're curious "why", this will help.

var path = require('path');
var HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  entry: './app/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'index_bundle.js',
    publicPath: '/'
  },
  module: {
    rules: [
      { test: /\.(js)$/, use: 'babel-loader' },
      { test: /\.css$/, use: [ 'style-loader', 'css-loader' ]}
    ]
  },
  devServer: {
    historyApiFallback: true,
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'app/index.html'
    })
  ]
};

我在这里写了更多关于此的内容 - 使用React Router修复无法GET / URL错误（或客户端路由器如何工作）

I wrote more about this here - Fixing the "cannot GET /URL" error on refresh with React Router (or how client side routers work)

这篇关于React-router v4 - 无法获取* url *的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！