try{
String sql="SELECT * FROM username WHERE name=?";
conn = DB.getConnection();
prst = conn.prepareStatement(sql);
String lll= Login.getText();
System.out.println(lll);
prst.setString(1,lll);
prst.execute();
rs = prst.executeQuery();
if (rs.next()){
if( String.valueOf( regi.getPassword()).equals(rs.getString(3))){
JOptionPane.showMessageDialog(Main, "成功", "错误",JOptionPane.WARNING_MESSAGE);
}else {
System.out.println(rs.getString(3));
System.out.println(regi.getPassword().toString());
JOptionPane.showMessageDialog(Main, "账户密码错误", "错误",JOptionPane.WARNING_MESSAGE);
}
}else{
JOptionPane.showMessageDialog(Main, "无此用户", "错误",JOptionPane.WARNING_MESSAGE);
}
}catch (Exception e1){
e1.printStackTrace();
} finally {
DB.close(rs);
DB.close(prst);
DB.close(conn);
}
}