如何将 label1.getText()放入rs.getint（）或rs.getstring（）使用

package com;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class HandlerSQL {
private Connection conn;
private PreparedStatement pre;
private ResultSet re;
private String user = "";
private String url = "";
private String password = "";
private String driver = "";//加载数据的驱动
/**
* @param args
*/
public Connection createConn() {
Connection conn = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(url, user, password);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return conn;
}

public UserInfo queryUser() {
UserInfo userInfo = null;
conn = this.createConn();
String sql