diff --git a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java
index fc17b2c1c73a93cb662fc7a01d37d3c015f73fcd..b5012c215fa4b4ab16d8ff5252a9518e2998e39a 100644
--- a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java
+++ b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java
@@ -40,10 +40,10 @@ public class JDBCDemo {
     private void init() {
         // get connection
         try {
-            String url = "jdbc:TAOS://" + host + ":6030/";
+            String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
             if (driverType.equals("restful")) {
                 Class.forName("com.taosdata.jdbc.rs.RestfulDriver");
-                url = "jdbc:TAOS-RS://" + host + ":6041/";
+                url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata";
             } else {
                 Class.forName("com.taosdata.jdbc.TSDBDriver");
             }