interceptors (instance, url) {

    // 请求拦截

    instance.interceptors.request.use(config => {

      // 添加全局的loading...

      if (!Object.keys(this.queue).length) {

        // Spin.show() // 不建议开启，因为界面不友好

      }

      this.queue[url] = true

      return config

    }, error => {

      return Promise.reject(error)

    })

    // 响应拦截

    instance.interceptors.response.use(res => {

      this.destroy(url)

      const { data, status } = res

      return { data, status }

    }, error => {

      this.destroy(url)

      let errorInfo = error.response

      if (!errorInfo) {

        const { request: { statusText, status }, config } = JSON.parse(JSON.stringify(error))

        errorInfo = {

          statusText,

          status,

          request: { responseURL: config.url }

        }

      }

      addErrorLog(errorInfo)

      return Promise.reject(error)

    })

  }

config: {transformRequest: {…}, transformResponse: {…}, timeout: , xsrfCookieName: "XSRF-TOKEN", adapter: ƒ, …}

data: {id: "", username: "", userpass: ""}

headers: {content-type: "application/json; charset=utf-8", content-length: ""}

request: MockXMLHttpRequest {custom: {…}, readyState: , responseURL: "http://127.0.0.1:8081/api/select.php", status: , statusText: "OK", …}

status:

statusText: "OK"

__proto__: Object