text: import fetch from 'isomorphic-fetch'
  // import { notification } from 'antd'
  // import { routerRedux } from 'dva/router' // history原本是routerRedux
  import { navigate } from '../model/route'
  import store from '../redux/store'
  
  const codeMessage = {
    200: '服务器成功返回请求的数据。',
    201: '新建或修改数据成功。',
    202: '一个请求已经进入后台排队（异步任务）。',
    204: '删除数据成功。',
    400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
    401: '用户没有权限（令牌、用户名、密码错误）。',
    403: '用户得到授权，但是访问是被禁止的。',
    404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
    406: '请求的格式不可得。',
    410: '请求的资源被永久删除，且不会再得到的。',
    422: '当创建一个对象时，发生一个验证错误。',
    500: '服务器发生错误，请检查服务器。',
    502: '网关错误。',
    503: '服务不可用，服务器暂时过载或维护。',
    504: '网关超时。'
  }
  function checkStatus(response) {
    if (response.status >= 200 && response.status < 300) {
      return response
    }
    const errortext = codeMessage[response.status] || response.statusText
    console.log(`请求错误 ${response.status}: ${response.url}`)
    console.log(errortext)
    // notification.error({
    //   message: `请求错误 ${response.status}: ${response.url}`,
    //   description: errortext,
    // })
    const error = new Error(errortext)
    error.name = response.status
    error.response = response
    throw error
  }
  
  /**
   * Requests a URL, returning a promise.
   *
   * @param  {string} url       The URL we want to request
   * @param  {object} [options] The options we want to pass to "fetch"
   * @return {object}           An object containing either "data" or "err"
   */
  export default function request(url, options) {
    
    const defaultOptions = {
      credentials: 'include'
    }
    const newOptions = { ...defaultOptions, ...options }
    if (newOptions.method === 'POST' || newOptions.method === 'PUT') {
      if (!(newOptions.body instanceof FormData)) {
        newOptions.headers = {
          Accept: 'application/json',
          'Content-Type': 'application/json; charset=utf-8',
          ...newOptions.headers
        }
        newOptions.body = JSON.stringify(newOptions.body)
      } else {
        // newOptions.body is FormData
        newOptions.headers = {
          Accept: 'application/json',
          'Content-Type': 'multipart/form-data',
          ...newOptions.headers
        }
      }
    }
  
    return fetch(url, newOptions)
      .then(checkStatus)
      .then((response) => {
        if (newOptions.method === 'DELETE' || response.status === 204) {
          return response.text()
        }
        return response.json()
      })
      .catch((e) => {
        const { dispatch } = store
        const status = e.name
        if (status === 401) {
          alert(status)
          // dispatch({
          //   type: 'login/logout',
          // })
          return
        }
        if (status === 403) {
          dispatch(navigate('/exception/403'))
          alert(status)
          return
        }
        if (status <= 504 && status >= 500) {
          dispatch(navigate('/exception/500'))
          alert(status)
          return
        }
        if (status >= 404 && status < 422) {
          dispatch(navigate('/exception/404'))
        }
      })
  }
  