diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractResultSet.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractResultSet.java
index 9ac6c1bb1a..14bd2929f1 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractResultSet.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractResultSet.java
@@ -349,7 +349,7 @@ public abstract class AbstractResultSet extends WrapperImpl implements ResultSet
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
 
-        return false;
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
 
     @Override
@@ -357,7 +357,7 @@ public abstract class AbstractResultSet extends WrapperImpl implements ResultSet
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
 
-        return false;
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
 
     @Override
@@ -365,7 +365,7 @@ public abstract class AbstractResultSet extends WrapperImpl implements ResultSet
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
 
-        return false;
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
 
     @Override
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulResultSetTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulResultSetTest.java
index a14d09588d..05fa265f84 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulResultSetTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulResultSetTest.java
@@ -259,10 +259,12 @@ public class RestfulResultSetTest {
         rs.previous();
     }
 
-    @Test(expected = SQLException.class)
+    @Test
     public void setFetchDirection() throws SQLException {
         rs.setFetchDirection(ResultSet.FETCH_FORWARD);
+        Assert.assertEquals(ResultSet.FETCH_FORWARD, rs.getFetchDirection());
         rs.setFetchDirection(ResultSet.FETCH_UNKNOWN);
+        Assert.assertEquals(ResultSet.FETCH_FORWARD, rs.getFetchDirection());
     }
 
     @Test
@@ -270,14 +272,15 @@ public class RestfulResultSetTest {
         Assert.assertEquals(ResultSet.FETCH_FORWARD, rs.getFetchDirection());
     }
 
-    @Test(expected = SQLException.class)
+    @Test
     public void setFetchSize() throws SQLException {
         rs.setFetchSize(0);
+        Assert.assertEquals(0, rs.getFetchSize());
     }
 
     @Test
     public void getFetchSize() throws SQLException {
-        Assert.assertEquals(1, rs.getFetchSize());
+        Assert.assertEquals(0, rs.getFetchSize());
     }
 
     @Test
@@ -528,7 +531,10 @@ public class RestfulResultSetTest {
 
     @Test(expected = SQLFeatureNotSupportedException.class)
     public void getNString() throws SQLException {
-        rs.getNString("f1");
+        String f10 = rs.getNString("f10");
+        Assert.assertEquals("涛思数据", f10);
+        f10 = rs.getNString(10);
+        Assert.assertEquals("涛思数据", f10);
     }
 
     @Test(expected = SQLFeatureNotSupportedException.class)