package.json文件中

"scripts": {

"test": "webpack-dev-server --hot",
"server":"nodemon server.jsx --exec babel-node"

},

server.jsx
具体代码为

import express from 'express'
import React from 'react'
import { renderToString } from 'react-dom/server'
import {RoutingContext,match} from 'react-router'
import {Provider} from 'react-redux'
import * as test from '../../actions/test/testaction'
import routes from './routes'
import configureStore from './stores/index.js'

const app=express()

function renderFullPage(html,initialState){
  return (`
    
    
    
      
    
    
      

        

          ${html}
        
      

      
      
    
    `
  )
}
app.use((req, res) => {
  match({ routes, location: req.url }, (err, redirectLocation, renderProps) => {
    if (err) {
      res.status(500).end(`Internal Server Error ${err}`);
    } else if (redirectLocation) {
      res.redirect(redirectLocation.pathname + redirectLocation.search);
    } else if (renderProps) {
      const store = configureStore();
      const state = store.getState();

      Promise.all([
        store.dispatch(test.getTestDate())     //store.dispatch(fetchItem(renderProps.params.id))
      ])
      .then(() => {
        const html = renderToString(
          
            
          
        )
        res.end(renderFullPage(html, store.getState()));
      });
    } else {
      res.status(404).end('Not found');
    }
  });
});

这是自己按照教程写的一个小栗子，但是不知道为什么会出现这个错误