change

src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDriverTest.java

@@ -224,6 +224,15 @@ public class TSDBDriverTest {
             }
         } catch (SQLException e) {
             e.printStackTrace();
+        } finally {
+            try {
+                if (statement != null)
+                    statement.close();
+                if (conn != null)
+                    conn.close();
+            } catch (SQLException e) {
+                e.printStackTrace();
+            }
         }
     }
 }