add front end code (#27)

web/src/services/uploadService.ts

@@ -0,0 +1,21 @@
+import request from '@/utils/request';
+import api from '@/utils/api';
+
+const { upload } = api;
+
+const uploadService = {
+  uploadFile: function (file, kb_id) {
+    const formData = new FormData();
+    formData.append('file', file);
+    formData.append('kb_id', kb_id);
+
+    const options = {
+      method: 'post',
+      data: formData
+    };
+
+    return request(upload, options);
+  }
+};
+
+export default uploadService;