用java编的连接access数据库代码在运行中提示：查询中的数目与目标字段中的数目不同！怎么解决？

用java编的连接access数据库代码在运行中提示：查询中的数目与目标字段中的数目不同！怎么解决？

package util;

import java.io.*;
import java.util.*;
import java.sql.*;

public class DBPool{
private static DBPool instance = null;

//取得连接
public static synchronized Connection getConnection() {
if (instance == null){
instance = new DBPool();
}
return instance._getConnection();
}

private DBPool(){
super();
}

private Connection _getConnection(){
try{
String sDBDriver = null;
String sConnection = null;
String sUser = null;
String sPassword = null;

Properties p = new Properties();
InputStream is = getClass().getResourceAsStream("/db.properties");
p.load(is);
sDBDriver = p.getProperty("DBDriver",sDBDriver);
sConnection = p.getProperty("Connection",sConnection);
sUser = p.getProperty("User","");
sPassword = p.getProperty("Password","");

Properties pr = new Properties();
pr.put("user",sUser);
pr.put("password",sPassword);
pr.put("characterEncoding", "GB2312");
pr.put("useUnicode", "TRUE");

Class.forName(sDBDriver).newInstance();
return DriverManager.getConnection(sConnection,pr);
}
catch(Exception se){
System.out.println(se);
return null;
}
}

//释放资源
public static void dbClose(Connection conn,PreparedStatement ps,ResultSet rs)
throws SQLException
{
rs.close();
ps.close();
conn.close();

}
}

看看是不是你写连接ACCESS数据库的类有问题啊

把你的语句贴上来看看，最觉见的是你的select字段里出现了重名列．检查一下有没重名的select列

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