dva 路由配置

1、引入
	import { Router, Route, Switch } from 'dva/router';
	
2、使用
	import React from 'react';
	import { Router, Route, Switch } from 'dva/router';
	import IndexPage from './routes/IndexPage/IndexPage';
	import ProductPage from './routes/ProductPage/index'

	function RouterConfig({ history }) {
	  return (
	    <Router history={history}>
	      <Switch>
	        <Route path="/" exact component={IndexPage} />
	        <Route path="/product" exact component={ProductPage} />
	      </Switch>
	    </Router>
	  );
	}
	
	export default RouterConfig;
	
3、注册路由,在index.js中

	app.router(require('./router').default);   .default将路由的RouterConfig配置出来

将Hash路由模式替换成BrowserHistory
	
	1、安装
		cnpm install --save history
	
	2、在主入口文件index.js中
		import { createBrowserHistory as createHistory } from 'history';
	
	3、改写初始化app
		const app = dva({
		    history: createHistory(),
		});