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Author

JDBC error

Alex Wood
Greenhorn

Joined: Aug 15, 2001
Posts: 3
I am getting the following error...java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Too few parameters. Expected 2.
This is the code...
import java.sql.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Test1 extends HttpServlet {
String dBDriver = "sun.jdbc.odbc.JdbcOdbcDriver";
Connection dbConnection;
Statement sQLStatement;
String url = "jdbc dbc:Project";
String username = "";
String password = "";
ResultSet rs;
public void init( ServletConfig config )
throws ServletException {
super.init( config );
try {
Class.forName( dBDriver ).newInstance();
dbConnection = DriverManager.getConnection(
url, username, password);
sQLStatement = dbConnection.createStatement();
}
catch (Exception e ) {
e.printStackTrace();
}
}
public void service(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
try {
String document;
document =
"<HTML><HEAD><TITLE>\n" +
"Project test\n" +
"</TITLE></HEAD><BODY>\n" +
"<H1>Well at least this part works</H1>\n" +
"/Fields\n" +
"[\n" +
"<<\n"+
"/T (Namefield)\n"+
"</BODY></HTML>";
rs = sQLStatement.executeQuery(

"SELECT Test.Value FROM Projectdata WHERE Test.Field='FirstName'");
while( rs.next() )
document += "/V (" + rs.getString( "Value" ) + ")\n";
response.setContentType("text/html");
PrintWriter out =
new PrintWriter(response.getOutputStream());
out.println(document);
out.close();
}
catch( IOException e ) {
response.setContentType("text/html");
PrintWriter out =
new PrintWriter(response.getOutputStream());
out.println( e.toString() );
out.close();
}
catch(SQLException e ) {
response.setContentType("text/html");
PrintWriter out =
new PrintWriter(response.getOutputStream());
out.println( e.toString() );
out.close();
}
}
}
Anyone have any ideas what the problem is? Thanks.
Alex
kim jungil
Greenhorn

Joined: Sep 27, 2001
Posts: 27
"SELECT Test.Value FROM Projectdata WHERE Test.Field='FirstName'");
while( rs.next() )
document += "/V (" + rs.getString( "Value" ) + ")\n";
I think the fourth line is error.
you must write rs.getString( "Test.Value" ), because you write the query language, you select Test.Value, not Value.
Alex Wood
Greenhorn

Joined: Aug 15, 2001
Posts: 3
I tried the suggestion but I still get the same error.
Thanks for the help.
Alex Wood
Adam Hardy
Ranch Hand

Joined: Oct 09, 2001
Posts: 567
alex,
does it give this error when you execute the same sql string in the access database?
also, i'm not sure about this but i don't think you should use VALUE and FIELD as the names of fields.
adam


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subject: JDBC error