1.添加数据源，说明可以为空

src/main/java/com/server/DataConnectorService.java

@@ -82,6 +82,10 @@ public class DataConnectorService {
             dataConnector.setConnectorGroup(-1);
         }
 
+        if (dataConnectorInfo.getNote() == null || "".equals(dataConnectorInfo)){
+            dataConnector.setNote("");
+        }
+
         System.out.println(dataConnector);
 
         dataConnectorMapper.insertDataConnector(dataConnector);