|
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class DemoPreparedStatementSetClob {
public static Connection getConnection() throws Exception {
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost/databaseName";
String username = "root";
String password = "root";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static void main(String[] args)throws Exception {
String id = "0001";
String newID = "0002";
ResultSet rs = null;
Connection conn = null;
PreparedStatement pstmt = null;
try {
conn = getConnection();
// begin transaction
conn.setAutoCommit(false);
String query1 = "select clob_column from clob_table where id = ?";
pstmt = conn.prepareStatement(query1);
pstmt.setString(1, id);
rs = pstmt.executeQuery();
rs.next();
java.sql.Clob clob = (java.sql.Clob) rs.getObject(1);
String query = "insert into clob_table(id, clob_column) values(?, ?)";
pstmt = conn.prepareStatement(query);
pstmt.setString(1, newID);
pstmt.setClob(2, clob);
// execute query, and return number of rows created
int rowCount = pstmt.executeUpdate();
System.out.println("rowCount=" + rowCount);
// end transaction
conn.commit();
} finally {
rs.close();
pstmt.close();
conn.close();
}
}
}
|
