sql exception in jsp page

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I hava Jsp code as:

jsp

<%@page import="org.apache.tomcat.util.net.SSLUtil"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">

<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>

<html>
    <head>
        <title>Connection with mysql database</title>
    </head>
    <body>
        <h1>Connection status </h1>
        <%
            try {
                String connectionURL = "jdbc:mysql://dbno2.cfghe6zvdgnoq7r.ap-southeast-2.rds.amazonaws.com:3306/mydb?user=aghil&password=password1";
                Connection connection = null;
                Statement stmt = null;
                Class.forName("com.mysql.jdbc.Driver").newInstance();
                connection = DriverManager.getConnection(connectionURL);
                if (!connection.isClosed()) {
                    stmt = connection.createStatement();
                }
                out.println("Successfully connected to MySQL server using TCP/IP...\n");
                String QueryString = "select username from mydb.userdetails WHERE username ='anil' and password='password'";
                ResultSet rs;
                String sre = null;
                try {
                    PreparedStatement statement = connection.prepareStatement(QueryString);
                    rs = statement.executeQuery();
                    sre = rs.getString(1);
                    out.println("\n" + sre);
                } catch (Exception e) {
                    out.println("\n" + e.toString());
                }
                connection.close();
            } catch (Exception ex) {
                out.println("Unable to connect to database." + ex);
            }
        %>
    </body>
</html>

and its output in browser is as follows :

<html><head>
<title>Connection with mysql database</title>
</head>
<body>

Connection status

Successfully connected to MySQL server using TCP/

java.sql.SQLException: Before start of result set></html>

why this? what to do?

Posted 15-Feb-13 22:21pm

gavkk

Updated 15-Feb-13 22:55pm

v2

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gavkk · Accepted Answer · 2013-02-15T22:59:00

Solution 1

PreparedStatement statement = connection.prepareStatement(QueryString);
rs = statement.executeQuery();
if(rs.next())
sre = rs.getString(1);
out.println("\n" + sre);

Posted 15-Feb-13 22:59pm

gavkk