modify

atms-api/src/main/java/pwc/taxtech/atms/common/datasource/DataSourceFactory.java

 package pwc.taxtech.atms.common.datasource;
 
 import com.alibaba.druid.pool.DruidDataSource;
+import com.beust.jcommander.ParameterException;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.pool2.KeyedPooledObjectFactory;
 import org.apache.commons.pool2.PooledObject;
@@ -19,6 +20,9 @@ public class DataSourceFactory implements KeyedPooledObjectFactory<String, Druid
 
     @Override
     public PooledObject<DruidDataSource> makeObject(String s) throws Exception {
+        if (StringUtils.isBlank(s)) {
+            throw new ParameterException("empty database name.");
+        }
         DruidDataSource dynamicDataSource = new DruidDataSource();
         String url = StringUtils.replace(dataSourceConfig.getUrl(), SYMBOL, s);
         dynamicDataSource.setUrl(url);