浏览器报错:Uncaught (in promise) TypeError: Cannot read property ‘protocol‘ of undefined

 报错的代码如下所示:

import axios from 'axios'
import VueAxios from 'vue-axios'

Vue.use(axios,VueAxios)

我们可以这样,加入语句:

Vue.prototype.$axios=axios
import axios from 'axios'
import VueAxios from 'vue-axios'

Vue.prototype.$axios=axios
Vue.use(axios,VueAxios)

但还是会报“Uncaught (in promise) TypeError: Cannot read property 'protocol' of undefined”错误,那我们去掉Vue.use(axios)不就行了吗?如下所示:

import axios from 'axios'
import VueAxios from 'vue-axios'

Vue.prototype.$axios=axios
Vue.use(VueAxios)

但结果是会报下面的错误:

 最终正确的避免上述报错的方式是连“Vue.use(VueAxios)”都去掉,只使用这一条语句“Vue.prototype.$axios=axios”,:

import axios from 'axios'
import VueAxios from 'vue-axios'

Vue.prototype.$axios=axios

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