bankdao.java~3~

销售管理系统 随着我国国民经济的持续发展

package com.dao;

import com.tool.JDBConnection;
import java.util.*;
import com.domain.BankVO;
import java.sql.*;

public class BankDao {
  private JDBConnection connection = null;
  public BankDao() {
    connection = new JDBConnection();
    this.connection.creatConnection(); //利用构造方法调用类中的对象对数据库创建连接
  }

//查询所有银行的信息
  public List bankSelect() {
    List list = new ArrayList();
    BankVO bank = null;
    String sql = "select * from tb_bank";
    ResultSet rs = connection.executeQuery(sql);
    try {
      while (rs.next()) {
        bank = new BankVO();
        bank.setId(Integer.valueOf(rs.getString(1)));
        bank.setBank_number(rs.getString(2));
        bank.setBank_name(rs.getString(3));
        bank.setBank_remark(rs.getString(4));
        list.add(bank);
      }
    }
    catch (SQLException ex) {
    }
    connection.closeConnection();
    return list;
  }

  //以数据库流水号为条件查询银行信息
  public BankVO BankSelectOne(String number) {
    BankVO bank = null;
    String sql = "select * from tb_bank where bank_number='" + number + "'";
    ResultSet rs = connection.executeQuery(sql);
    try {
      while (rs.next()) {
        bank = new BankVO();
        bank.setId(Integer.valueOf(rs.getString(1)));
        bank.setBank_number(rs.getString(2));
        bank.setBank_name(rs.getString(3));
        bank.setBank_remark(rs.getString(4));
      }
    }
    catch (SQLException ex) {
    }
    connection.closeConnection();
    return bank;
  }

  //删除银行信息
  public void bankDelete(Integer id) {
    String sql = "delete from tb_bank where id='" + id + "'";
    connection.executeUpdate(sql);
    connection.closeConnection();
  }

//添加银行信息
  public void bankInsert(BankVO vo) {
    String sql = "insert into tb_bank values ('" + vo.getBank_number() + "','" +
        vo.getBank_name() + "','" + vo.getBank_remark() + "')";
    connection.executeUpdate(sql);
    connection.closeConnection();
  }

//修改银行信息
  public void bankUpdate(BankVO vo) {
    String sql =
        "update tb_bank set bank_name='" + vo.getBank_name() +
        "',bank_remark='" +
        vo.getBank_remark() + "' where id=" + vo.getId() + "";
    connection.executeUpdate(sql);
    connection.closeConnection();
  }

//修改银行编号
  public void bankUpdateNumber(BankVO vo) {
    String sql =
        "update tb_bank set bank_number='" + vo.getBank_number() +
        "' where id=" + vo.getId() + "";
    connection.executeUpdate(sql);
    connection.closeConnection();
  }

}