feat:request back处理

src/assets/js/utils/request.js

@@ -50,6 +50,9 @@ service.interceptors.request.use(
 service.interceptors.response.use(
   response => {
     endLoading()
+    if (response.config.back) {
+      return response.data
+    }
     // 二进制数据则直接返回
     if (
       response.request.responseType === 'blob' ||