feat(frontend): optimize frontend interaction (#8)

Support auto refresh. Change authentication method. Streamline the frontend code.

frontend/src/api/auth.js

@@ -1,11 +1,12 @@
 import request from './index'
 
-export function ping() {
+export function auth(token) {
     return request({
-        url: '/ping',
+        url: '/auth',
         method: 'get',
+        headers: {"Token": token},
         validateStatus: function (status) {
-            return status >= 200 && status < 300 // 默认的
+            return status >= 200 && status < 300
         }
     })
 }

frontend/src/api/index.js

@@ -5,13 +5,4 @@ const service = axios.create({
     timeout: 5000 // request timeout
 })
 
-service.interceptors.request.use(function (config) {
-    const token = localStorage.getItem("token")
-    if (token !== null) {
-        config.headers['Token'] = token
-    }
-    // 在发送请求之前做些什么
-    return config
-})
-
 export default service