fix：Oracle数据库代码生成获取不了数据库问题

ZR.Admin.WebApi/Controllers/System/CodeGeneratorController.cs

@@ -54,7 +54,7 @@ namespace ZR.Admin.WebApi.Controllers
         public IActionResult GetListDataBase()
         {
             var dbList = _CodeGeneraterService.GetAllDataBases();
-            var defaultDb = dbList.Count > 0 ? dbList[0] : null;
+            var defaultDb = dbList?[0];
             return SUCCESS(new { dbList, defaultDb });
         }
 

ZR.Admin.WebApi/appsettings.json

@@ -48,7 +48,8 @@
     "autoPre": true, //自动去除表前缀
     "author": "admin",
     "tablePrefix": "sys_", //"表前缀（生成类名不会包含表前缀，多个用逗号分隔）",
-    "vuePath": "" //前端代码存储路径eg：D:\Work\ZRAdmin-Vue3
+    "vuePath": "", //前端代码存储路径eg：D:\Work\ZRAdmin-Vue3
+    "oracle_db": ""
   },
   //邮箱配置信息
   "MailOptions": {