增强服务配置文件启动功能，支持文件配置仍然可以修改

src/main/java/net/tccn/servlet/BaseServlet.java

@@ -67,6 +67,9 @@ public class BaseServlet extends HttpServlet {
         } catch (ArangoDBException e) {
             logger.log(Level.INFO, "arangodb init!", e);
             ArangoSource.init();
+        } catch (UnsupportedOperationException e) {
+            e.printStackTrace();
+            response.finish(JBean.by(-1, e.getMessage()));
         }
     }