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react+dva脚手架中,如何全局引入axios?

react官方脚手架中,我们可以在app.js中引入

app.js


  import axios from "axios";
  
  React.Component.prototype.axios = axios;

然后在组件里面就可以

 this.axios.get('url')

 .then(function (response)?{

 _this.setState({

 users: response.data,

 isLoaded: true

 });

 })`

 
`

现在用dva脚手架

index.js中是这样的格式

import dva from 'dva';

import './index.css';

//?1.?Initialize

const app = dva();

//?2.?Plugins

//?app.use({});

//?3.?Model

//?app.model(require('./models/example').default);

//?4.?Router

app.router(require('./router').default);

//?5.?Start

app.start('#root');

想要全局引入axios 并且在路由里面调用this.axios的话 应该怎么写法

另外如何配置axios全局的拦截器 我看官方dva推荐是把所有的请求写在service api里面 然后在model里面分发到每个路由里面,现在不想这么做,想在路由里面按需axios调用接口 请问可以实现吗?


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