dutydao.java~2~

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.DutyVO;
import java.sql.*;

//对职务信息的操作
public class DutyDao {
  private JDBConnection connection = null;
  public DutyDao() {
    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
  }

//全部查询
  public List dutySelect() {
    List list = new ArrayList();
    DutyVO duty = null;
    String sql = "select * from tb_duty";
    ResultSet rs = connection.executeQuery(sql);
    try {
      while (rs.next()) {
        duty = new DutyVO();
        duty.setId(Integer.valueOf(rs.getString(1)));
        duty.setDuty_number(rs.getString(2));
        duty.setDuty_name(rs.getString(3));
        duty.setDuty_remark(rs.getString(4));
        list.add(duty);
      }
    }
    catch (SQLException ex) {
    }
    connection.closeConnection();
    return list;
  }

}