Java+swing+Mysql实现商品销售管理系统

 
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
 
-- ----------------------------
-- Table structure for comminfo
-- ----------------------------
DROP TABLE IF EXISTS `comminfo`;
CREATE TABLE `comminfo`  (
  `itemNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '商品编号',
  `itemName` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '商品名称',
  `brand` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '品牌',
  `model` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '型号',
  `salePrice` int NOT NULL COMMENT '售价',
  PRIMARY KEY (`itemNo`) USING BTREE,
  INDEX `pk10`(`salePrice`) USING BTREE,
  CONSTRAINT `comminfo_pk` FOREIGN KEY (`itemNo`) REFERENCES `inventory` (`itemNo`) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of comminfo
-- ----------------------------
INSERT INTO `comminfo` VALUES ('i001', '大航海时代', '海贼王', '其他', 10000);
INSERT INTO `comminfo` VALUES ('i002', '红发四皇', '海贼王', '其他', 5000);
INSERT INTO `comminfo` VALUES ('i003', '白胡子之死', '海贼王', '其他', 1000);
INSERT INTO `comminfo` VALUES ('i004', '路飞出海', '海贼王', '其他', 500);
INSERT INTO `comminfo` VALUES ('i005', '艾斯之死', '海贼王', '其他', 1000);
INSERT INTO `comminfo` VALUES ('i006', '克洛克达尔', '海贼王', '其他', 3000);
INSERT INTO `comminfo` VALUES ('i007', '汉库克逃脱', '海贼王', '其他', 2000);
INSERT INTO `comminfo` VALUES ('i008', '海绵宝宝的小窝', '其他', '其他', 10000);
INSERT INTO `comminfo` VALUES ('i009', '海星', '食品', 'min', 1000);
 
-- ----------------------------
-- Table structure for employee
-- ----------------------------
DROP TABLE IF EXISTS `employee`;
CREATE TABLE `employee`  (
  `employeeNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '员工号',
  `employeeName` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '员工姓名',
  `sex` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '性别',
  `basePay` int NOT NULL COMMENT '基本工资',
  `post` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '职务',
  `password` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '密码',
  PRIMARY KEY (`employeeNo`) USING BTREE,
  INDEX `员工编号`(`employeeNo`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of employee
-- ----------------------------
INSERT INTO `employee` VALUES ('e001', '香克斯', '男', 4000, '四皇', '123456');
INSERT INTO `employee` VALUES ('e002', '路飞', '男', 500, '新星', '000111');
INSERT INTO `employee` VALUES ('e003', '索隆', '男', 500, '新星', '000222');
INSERT INTO `employee` VALUES ('e004', '娜美', '女', 500, '新星', '000333');
INSERT INTO `employee` VALUES ('e005', '山治', '男', 500, '新星', '000444');
INSERT INTO `employee` VALUES ('e006', '乌索普', '男', 500, '新星', '000555');
INSERT INTO `employee` VALUES ('e007', '罗杰', '男', 10000, '海贼王', '666666');
INSERT INTO `employee` VALUES ('e008', '爱德华', '男', 4000, '四皇', '888888');
INSERT INTO `employee` VALUES ('e009', '艾斯', '男', 600, '新星', '111111');
INSERT INTO `employee` VALUES ('e010', '克洛克达尔', '男', 800, '七武海', '222222');
INSERT INTO `employee` VALUES ('e011', '汉库克', '女', 800, '七武海', '333333');
 
-- ----------------------------
-- Table structure for employeeifom
-- ----------------------------
DROP TABLE IF EXISTS `employeeifom`;
CREATE TABLE `employeeifom`  (
  `employeeNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '员工号',
  `employeeName` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '员工姓名',
  `ispartyMember` varchar(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '是否党员',
  `Resume` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '简介',
  `photo` blob NULL COMMENT '照片',
  PRIMARY KEY (`employeeNo`) USING BTREE,
  CONSTRAINT `pk6` FOREIGN KEY (`employeeNo`) REFERENCES `employee` (`employeeNo`) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of employeeifom
-- ----------------------------
INSERT INTO `employeeifom` VALUES ('e001', '香克斯', '否', '红发香克斯四皇之一', NULL);
INSERT INTO `employeeifom` VALUES ('e002', '路飞', '否', '草帽小子', NULL);
INSERT INTO `employeeifom` VALUES ('e003', '索隆', '否', '绿毛，努力，自律', NULL);
INSERT INTO `employeeifom` VALUES ('e004', '娜美', '是', '航海士', NULL);
INSERT INTO `employeeifom` VALUES ('e005', '山治', '否', '厨师', NULL);
INSERT INTO `employeeifom` VALUES ('e006', '乌索普', '否', '绝境乌索普', NULL);
 
-- ----------------------------
-- Table structure for inventory
-- ----------------------------
DROP TABLE IF EXISTS `inventory`;
CREATE TABLE `inventory`  (
  `itemNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '商品编号',
  `purchaseDate` datetime NOT NULL COMMENT '进货日期',
  `buyingPrice` int NOT NULL COMMENT '进货价',
  `itemQuantity` int NOT NULL COMMENT '进货数量',
  `supplierNo` char(6) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '供应商编号',
  PRIMARY KEY (`itemNo`) USING BTREE,
  INDEX `supplierNo`(`supplierNo`) USING BTREE,
  INDEX `itemNo`(`itemNo`) USING BTREE,
  CONSTRAINT `inventory_pk` FOREIGN KEY (`supplierNo`) REFERENCES `supplier` (`supplierNo`) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of inventory
-- ----------------------------
INSERT INTO `inventory` VALUES ('i001', '1497-02-24 00:00:00', 10000, 1, 's004');
INSERT INTO `inventory` VALUES ('i002', '1517-01-01 00:00:00', 4000, 1, 's001');
INSERT INTO `inventory` VALUES ('i003', '1520-03-24 00:00:00', 4000, 1, 's002');
INSERT INTO `inventory` VALUES ('i004', '1520-01-01 00:00:00', 1000, 5, 's003');
INSERT INTO `inventory` VALUES ('i005', '1520-08-10 00:00:00', 2000, 1, 's007');
INSERT INTO `inventory` VALUES ('i006', '1515-01-13 00:00:00', 1000, 1, 's005');
INSERT INTO `inventory` VALUES ('i007', '1506-01-18 00:00:00', 3000, 1, 's006');
INSERT INTO `inventory` VALUES ('i008', '2021-09-09 00:00:00', 1000, 10, 's008');
INSERT INTO `inventory` VALUES ('i009', '2021-09-09 00:00:00', 500, 100, 's009');
INSERT INTO `inventory` VALUES ('i010', '1520-03-24 00:00:00', 500, 1010, 's010');
 
-- ----------------------------
-- Table structure for register
-- ----------------------------
DROP TABLE IF EXISTS `register`;
CREATE TABLE `register`  (
  `id` char(11) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL,
  `password` char(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL,
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of register
-- ----------------------------
INSERT INTO `register` VALUES ('012', '123');
INSERT INTO `register` VALUES ('0123', '0123');
INSERT INTO `register` VALUES ('123', '123');
INSERT INTO `register` VALUES ('123456', '123');
 
-- ----------------------------
-- Table structure for returnit
-- ----------------------------
DROP TABLE IF EXISTS `returnit`;
CREATE TABLE `returnit`  (
  `price` int NOT NULL COMMENT '价格',
  `returnNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '退货号',
  `transactionNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '销售号',
  `itemNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '商品编号',
  `supplierNo` char(6) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '供应商编号',
  `reason` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '退货原因',
  PRIMARY KEY (`returnNo`) USING BTREE,
  INDEX `supplierNo`(`supplierNo`) USING BTREE,
  INDEX `transactionNo`(`transactionNo`) USING BTREE,
  INDEX `itemNo`(`itemNo`) USING BTREE,
  INDEX `price`(`price`) USING BTREE,
  CONSTRAINT `returnit_pk1` FOREIGN KEY (`itemNo`) REFERENCES `inventory` (`itemNo`) ON DELETE RESTRICT ON UPDATE CASCADE,
  CONSTRAINT `returnit_pk2` FOREIGN KEY (`transactionNo`) REFERENCES `salefact` (`transactionNo`) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of returnit
-- ----------------------------
 
-- ----------------------------
-- Table structure for salefact
-- ----------------------------
DROP TABLE IF EXISTS `salefact`;
CREATE TABLE `salefact`  (
  `transactionNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '销售号',
  `itemNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '商品编号',
  `saleQuantity` int NOT NULL COMMENT '销售数量',
  `saleSumPrice` int NOT NULL COMMENT '销售总金额',
  `saleDate` datetime NOT NULL COMMENT '销售日期',
  `employeeNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '员工号',
  PRIMARY KEY (`transactionNo`) USING BTREE,
  INDEX `商品编号`(`itemNo`) USING BTREE,
  INDEX `员工编号`(`employeeNo`) USING BTREE,
  CONSTRAINT `salefact_pk1` FOREIGN KEY (`itemNo`) REFERENCES `inventory` (`itemNo`) ON DELETE RESTRICT ON UPDATE CASCADE,
  CONSTRAINT `salefact_pk2` FOREIGN KEY (`employeeNo`) REFERENCES `employee` (`employeeNo`) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of salefact
-- ----------------------------
INSERT INTO `salefact` VALUES ('t001', 'i001', 1, 20000, '1497-12-31 00:00:00', 'e007');
INSERT INTO `salefact` VALUES ('t002', 'i002', 1, 10000, '1520-02-21 00:00:00', 'e001');
INSERT INTO `salefact` VALUES ('t003', 'i003', 1, 12000, '1521-03-24 00:00:00', 'e008');
INSERT INTO `salefact` VALUES ('t004', 'i004', 5, 1000, '1521-08-21 00:00:00', 'e002');
INSERT INTO `salefact` VALUES ('t005', 'i005', 1, 1000, '1521-05-21 00:00:00', 'e009');
INSERT INTO `salefact` VALUES ('t006', 'i006', 1, 2000, '1520-02-01 00:00:00', 'e010');
INSERT INTO `salefact` VALUES ('t007', 'i007', 1, 6000, '1521-03-05 00:00:00', 'e011');
 
-- ----------------------------
-- Table structure for stock
-- ----------------------------
DROP TABLE IF EXISTS `stock`;
CREATE TABLE `stock`  (
  `buyingPrice` int NOT NULL COMMENT '进货价',
  `entryNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '进货号',
  `itemNo` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '商品编号',
  `quantity` int NOT NULL COMMENT '数量',
  PRIMARY KEY (`entryNo`) USING BTREE,
  INDEX `stock_pk`(`itemNo`) USING BTREE,
  CONSTRAINT `stock_pk` FOREIGN KEY (`itemNo`) REFERENCES `inventory` (`itemNo`) ON DELETE RESTRICT ON UPDATE CASCADE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of stock
-- ----------------------------
INSERT INTO `stock` VALUES (10000, 'e001', 'i001', 1);
INSERT INTO `stock` VALUES (4000, 'e002', 'i002', 1);
INSERT INTO `stock` VALUES (4000, 'e003', 'i003', 1);
INSERT INTO `stock` VALUES (1000, 'e004', 'i004', 5);
INSERT INTO `stock` VALUES (2000, 'e005', 'i005', 1);
INSERT INTO `stock` VALUES (1000, 'e006', 'i006', 1);
INSERT INTO `stock` VALUES (3000, 'e007', 'i007', 1);
INSERT INTO `stock` VALUES (1000, 'e008', 'i008', 10);
INSERT INTO `stock` VALUES (500, 'e009', 'i009', 100);
INSERT INTO `stock` VALUES (500, 'e010', 'i010', 10);
 
-- ----------------------------
-- Table structure for supplier
-- ----------------------------
DROP TABLE IF EXISTS `supplier`;
CREATE TABLE `supplier`  (
  `supplierName` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '供应商名称',
  `supplierNo` char(6) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '供应商编号',
  `address` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '供应商地址',
  `teleNumber` char(11) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '联系电话',
  PRIMARY KEY (`supplierNo`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Records of supplier
-- ----------------------------
INSERT INTO `supplier` VALUES ('红发海贼团', 's001', '雷德>佛斯号', '13245672386');
INSERT INTO `supplier` VALUES ('白胡子海贼团', 's002', '莫比迪克号', '19046575123');
INSERT INTO `supplier` VALUES ('草帽海贼团', 's003', '黄金梅利号', '12300230989');
INSERT INTO `supplier` VALUES ('罗杰海贼团', 's004', '奥尔>杰克森号', '11109998888');
INSERT INTO `supplier` VALUES ('巴洛克工作社', 's005', '下大雨', '10010020003');
INSERT INTO `supplier` VALUES ('九蛇海贼团', 's006', '九蛇岛', '10020030004');
INSERT INTO `supplier` VALUES ('黑桃海贼团', 's007', '没提到', '12340056007');
INSERT INTO `supplier` VALUES ('海绵宝宝', 's008', '菠萝屋', '12345678910');
INSERT INTO `supplier` VALUES ('派大星的石头屋', 's009', '深海石头屋', '10010010201');
INSERT INTO `supplier` VALUES ('广西药业', 's010', '广西柳州', '11100001011');
 
SET FOREIGN_KEY_CHECKS = 1;

 package data;
 
import entity.Employee;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
 
public class EmployeeDao {
    
    public static Employee getEmployeeByEmployeeNo(String employeeNo) {
        Employee employee = null;
        if (employeeNo != null) {
            // 构造按照员工编号查询员工的sql查询语句
            String sql = "select * from employee where employeeNo='" + employeeNo + "'";
            ResultSet rs = BaseDao1.executeQuery(sql);// 执行查询语句，并返回结果集
            // 处理查询结果
            try {
                if (rs.next()) {
                    // 创建员工对象，保存员工信息
                    employee = new Employee();
                    employee.setEmployeeNo(rs.getString("employeeNo"));
                    employee.setEmployeeName(rs.getString("employeeName"));
                    employee.setSex(rs.getString("sex"));
                    employee.setBasePay(rs.getInt("basePay"));
                    employee.setPost(rs.getString("post"));
                    employee.setPassword(rs.getString("password"));
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        return employee;// 返回员工对象
    }
 
    
    public static List<Employee> selectEmployeeList(String sql) {
        List<Employee> list = new ArrayList<Employee>();// 创建列表
        if (sql != null) {
            Employee employee = null;
            ResultSet rs = BaseDao1.executeQuery(sql);// 执行查询语句，并返回结果集
            try {
                while (rs.next()) {
                    // 创建员工对象，保存员工信息
                    employee = new Employee();
                    employee.setEmployeeNo(rs.getString("employeeNo"));
                    employee.setEmployeeName(rs.getString("employeeName"));
                    employee.setSex(rs.getString("sex"));
                    employee.setBasePay(rs.getInt("basePay"));
                    employee.setPost(rs.getString("post"));
                    employee.setPassword(rs.getString("password"));
                    list.add(employee);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return list;// 返回员工列表
    }
 
    
    public static List<Employee> selectEmployeeList() {
        // 构造查询所有员工的sql查询语句
        String sql = "select * from employee";
        return selectEmployeeList(sql);// 返回员工列表
    }
 
    
    public static List<Employee> selectEmployeeList(String field, String value) {
        // 构造默认的sql查询语句
        String sql = "select * from employee";
        if ((value != null & value.length() > 0) && field != null) {
            // 构造按照字符属性查询员工的sql查询语句，采用模糊查询
            sql = "select * from employee where " + field + " like '%" + value + "%'";
        }
        return selectEmployeeList(sql);// 返回员工列表
    }
 
 
    
    public static List<Employee> selectEmployeeList(String field, int value) {
        // 构造默认的sql查询语句
        String sql = "select * from employee";
        if (field != null && value != 0) {
            // 构造按照整型属性查询员工的sql查询语句，采用区间查询
            sql = "select * from employee where " + field + "=" +value;
        }
        return selectEmployeeList(sql);// 返回员工列表
    }
 
    
    public static int insertEmployee(Employee Employee) {
        if (Employee != null) {
            // 获取员工信息
            String EmployeeNo = Employee.getEmployeeNo();
            String EmployeeName = Employee.getEmployeeName();
            String sex = Employee.getSex();
            String post = Employee.getPost();
            String password = Employee.getPassword();
            int basePay = Employee.getBasePay();
            // 构造添加员工的sql更新语句
            String sql = "insert into employee values('" + EmployeeNo + "','" + EmployeeName + "','" + sex + "'," +basePay+
                    ", '"+ post + "','"+ password + "' )";
            return BaseDao1.executeUpdate(sql);// 执行更新语句
        } else {
            return -1;
        }
    }
 
    
    public static int upDateEmployee(Employee Employee) {
        if (Employee != null) {
            // 获取员工信息
            String EmployeeNo = Employee.getEmployeeNo();
            String EmployeeName = Employee.getEmployeeName();
            String sex = Employee.getSex();
            String post = Employee.getPost();
            String password = Employee.getPassword();
            int basePay = Employee.getBasePay();
            // 构造修改员工的sql更新语句
            String sql = "update  employee set employeeName='" + EmployeeName + "',sex='" + sex + "', post='" + post
                    +"',password ='"+password + "',basePay=" + basePay + " where employeeNo='" + EmployeeNo + "'";
            return BaseDao1.executeUpdate(sql);// 执行更新语句
        } else {
            return -1;
        }
    }
 
    
    public static int deleteEmployee(String EmployeeNo) {
        // 构造删除员工的sql更新语句
        String sql = "delete from employee  where employeeNo='" + EmployeeNo + "'";
        return BaseDao1.executeUpdate(sql);// 执行更新语句
    }
 
    
    public static void emptyEmployee() {
        // 构造清空员工的sql更新语句
        String sql = "delete from employee";
        BaseDao1.executeUpdate(sql);// 执行更新语句
    }
}

package Login;
 
import windows.MainFrame;
import java.sql.*;
import javax.swing.JOptionPane;
public class HandleLogin {
   Connection con;//与特定数据库的连接（会话）。
   PreparedStatement preSql;//PreparedStatement是一个接口，preSql是一个接口引用，接口不能new对象，所以借用下方prepareStatement方法
   ResultSet rs;//表示数据库结果集的数据表，通常通过执行查询数据库的语句生成。
   public HandleLogin(){
      con = GetDBConnection.connectDB("user","root","123456");//链接数据库
   }
   public Login queryVerify(Login loginModel) {
      String id = loginModel.getID();
      String pw = loginModel.getPassword();
      String sqlStr ="select id,password from register where "+
                      "id = ? and password = ?";
      try { 
          preSql = con.prepareStatement(sqlStr);//创建一个 PreparedStatement对象，用于将参数化的SQL语句发送到数据库
          preSql.setString(1,id);//将指定的参数设置为给定的Java String值。1代表sql语句中第一个？号，后面的参数代表给？赋的值
          preSql.setString(2,pw);//同上
          rs = preSql.executeQuery(); 
          if(rs.next()==true) {//最初，光标位于第一行之前，next方法将光标移动到下一行，并且由于在ResultSet对象中没有更多行时返回false
             loginModel.setLoginSuccess(true);//第一行有数据代表该ID和密码都存在，因此登录成功，并将loginSuccess设为true
             JOptionPane.showMessageDialog(null,"登录成功",//弹出一个标准对话框，提示用户获取值或通知他们某些东西。
                             "恭喜",JOptionPane.WARNING_MESSAGE);
              MainFrame mainFrame = new MainFrame();
          }
          else {
             loginModel.setLoginSuccess(false);//第一行不存在代表ID或密码错误，并将loginSuccess设为false
             JOptionPane.showMessageDialog(null,"登录失败",//弹出一个标准对话框，提示用户获取值或通知他们某些东西。
                "登录失败，重新登录",JOptionPane.WARNING_MESSAGE);
          }
          con.close();
      }
      catch(SQLException e) {}
      return loginModel;
   }
}

package windows;
 
import data.EmployeeDao;
import entity.Employee;
import java.awt.BorderLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.util.List;
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;
 
public class EmployeeQuery extends PublicJFrame{
    
    JLabel lb_query;// 声明查询标签
    JTextField tf_query;// 声明查询条件文本框
    JComboBox<String> cb_query;// 声明查询栏目组合框
    JButton bt_query;// 声明查询按钮
    private JTable table;// 声明表格
    // 调用方法，获取所有员工列表，并保存
    private List<Employee> list = EmployeeDao.selectEmployeeList();
    // 创建员工表栏目名称字符串
    private String[] tb_heads = { "员工编号 ", "员工名称 ", "性别", "职务", "基本工资" };
    // 员工表栏目名称对应的表字段
    private String[] fields = { "EmployeeNo", "EmployeeName", "sex", "post","basePay" };
    // 创建员工表格模型
    private DefaultTableModel model = new DefaultTableModel(
            new Object[][] {}, tb_heads);
    private String field = "EmployeeNo";// 设置默认的当前的查询字段
    String valueStr = " ";// 设置字符串类型查询字段的初始值
    int valueInt = 0;// 设置整型类型查询字段的初始值
    double valueDouble = 0.0;// 设置实型数据查询字段的初始值
 
    
    EmployeeQuery() {
        this.setTitle("--员工查询-- ");
        this.setSize(1200, 500);
        JPanel queryPanel = createQueryPanel();
        this.add(queryPanel, BorderLayout.NORTH);
        JPanel tablePanel = createTablePanel();
        this.add(tablePanel, BorderLayout.CENTER);
        this.setLocationRelativeTo(null);
        this.setVisible(true);
    }
 
    
    private JPanel createQueryPanel() {
        JPanel queryPanel = new JPanel();
        queryPanel.setOpaque(false);//允许底层像素出现
        queryPanel.setLayout(new GridBagLayout());
        ((GridBagLayout) queryPanel
                .getLayout()).columnWidths = new int[] { 0, 100, 200,
                120, 80, 80, 0 };
        ((GridBagLayout) queryPanel
                .getLayout()).columnWeights = new double[] { 0.5, 0.0,
                0.0, 0.0, 0.0, 0.0, 0.5 };
 
        lb_query = new JLabel("请输入员工编号");
        queryPanel.add(lb_query,
                new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.EAST,
                        GridBagConstraints.BOTH,
                        new Insets(10, 10, 10, 10), 0, 0));
 
        tf_query = new JTextField();
        tf_query.requestFocus();
        // 为查询条件文本框，添加回车键事件监听器
        tf_query.addKeyListener(new KeyAdapter() {
            @Override
            public void keyTyped(KeyEvent arg0) {
                if (arg0.getKeyChar() == '\n') {
                    // 调用“查询”按钮事件响应方法
                    bn_query_actionPerformed();
                }
            }
        });
        queryPanel.add(tf_query,
                new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(10, 0, 10, 10), 0, 0));
 
        cb_query = new JComboBox<String>(tb_heads);
        // 为查询栏目组合框，添加条目事件监听器
        cb_query.addItemListener(new ItemListener() {
            @Override
            public void itemStateChanged(ItemEvent arg0) {
                // 调用“查询栏目”组合框栏目状态被改变事件响应方法
                cb_query_itemStateChanged(arg0);
            }
        });
        queryPanel.add(cb_query,
                new GridBagConstraints(3, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(10, 0, 10, 10), 0, 0));
 
        bt_query = new JButton("查询 ");
        // 为“查询”按钮，添加单击事件监听器
        bt_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent arg0) {
                // 调用“查询”按钮事件响应方法
                bn_query_actionPerformed();
            }
        });
        queryPanel.add(bt_query,
                new GridBagConstraints(4, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(10, 0, 10, 10), 0, 0));
 
        JButton bn_close = new JButton("关闭");
        // 为“关闭”按钮，添加单击事件监听器
        bn_close.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent arg0) {
                dispose();// 关闭界面
            }
        });
 
        queryPanel.add(bn_close,
                new GridBagConstraints(5, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(10, 0, 10, 10), 0, 0));
        return queryPanel;// 返回“查询面板”
    }
 
    
    private JPanel createTablePanel() {
        // 创建表格面板，采用边界布局
        JPanel tablePanel = new JPanel(new BorderLayout(5, 5));
        JScrollPane scrollPane = new JScrollPane();// 创建滚动面板
        tablePanel.add(scrollPane);// 将表格面板添加到滚动面板上
        table = new JTable(model);// 创建表格，并采用指定的表格模型
        addRowToModel(list);
        scrollPane.setViewportView(table);
        return tablePanel;
    }
 
    
    private void addRowToModel(List<Employee> list) {
        model.setRowCount(0);// 清除表格模型中的数据
        for (int i = 0; i < list.size(); i++) {
            Employee Employee = list.get(i);
            model.addRow(new Object[] { Employee.getEmployeeNo(),
            Employee.getEmployeeName(),
            Employee.getSex(),
            Employee.getPost(),
            Employee.getBasePay()});
        }
    }
 
    
    private void cb_query_itemStateChanged(ItemEvent arg0) {
        if (arg0.getStateChange() == ItemEvent.SELECTED) {
            // 根据选择改变标签显示内容
            lb_query.setText("请输入" + (String) arg0.getItem() + ":");
            tf_query.setText("");
            // 获取组合框中选定的栏目名称
            for (int i = 0; i < tb_heads.length; i++) {
                if (arg0.getItem().equals(tb_heads[i])) {
                    field = fields[i];// 保存对应的字段，作为当前被选定的字段
                }
            }
            list = EmployeeDao.selectEmployeeList();// 调用方法，获取所有商品列表
            addRowToModel(list);// 调用方法：将商品列表，添加到表格模型中
            tf_query.requestFocus();// 设置查询条件文本框，获得焦点
        }
    }
 
    
    private void bt_modify_actionPerformed() {
 
        switch (field) {
            case "EmployeeNo":
            case "EmployeeName":
            case "sex":
            case "post":
                // 获取字符串类型的查询条件
                valueStr = tf_query.getText();
                // 调用按照（字段名、字符串字段值）查询员工列表的方法，查询员工信息
                list = EmployeeDao.selectEmployeeList(field, valueStr);
                break;
            case "basePay":
                // 获取整型类型的查询条件
                if (tf_query.getText().equals("")) {
                    tf_query.setText("0");
                }
                valueInt = new Integer(tf_query.getText()).intValue();
                // 调用按照（字段名、整型字段值）查询员工列表的方法，查询员工信息
                list = EmployeeDao.selectEmployeeList(field, valueInt);
                break;
        }
        addRowToModel(list);// 将查询获取的员工列表，添加到表格模型中
 
    }
 
    
    private void bn_query_actionPerformed() {
 
        switch (field) {
            case "EmployeeNo":
            case "EmployeeName":
            case "sex":
            case "post":
            case "password":
                // 获取字符串类型的查询条件
                valueStr = tf_query.getText();
                // 调用按照（字段名、字符串字段值）查询员工列表的方法，查询员工信息
                list = EmployeeDao.selectEmployeeList(field, valueStr);
                break;
            case "basePay":
                // 获取整型类型的查询条件
                if (tf_query.getText().equals("")) {
                    tf_query.setText("0");
                }
                valueInt = new Integer(tf_query.getText()).intValue();
                // 调用按照（字段名、整型字段值）查询员工列表的方法，查询员工信息
                list = EmployeeDao.selectEmployeeList(field, valueInt);
                break;
        }
        addRowToModel(list);// 将查询获取的员工列表，添加到表格模型中
 
    }
 
    
    public static void main(String[] args) {
        new EmployeeQuery();
    }
}

package windows;
 
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;
import javax.swing.table.DefaultTableModel;
import CommoditySales.Constant;
import data.EmployeeDao;
import entity.Employee;
 
public class EmployeeUpKeep extends PublicJFrame {
    
    private JTextField tf_id;// 声明员工编号文本框
    private JTextField tf_name;// 声明员工名文本框
    private JComboBox<String> cb_type;// 声明员工类型组合框
    private JTextField tf_basePay;// 声明基本工资文本框
    private JTextField tf_post;// 声明职务文本框
    private JTextField tf_password;// 声明密码文本框
 
    // 声明添加、修改、取消、关闭、删除、清空按钮
    private JButton jb_insert, jb_update, jb_cancel, jb_close,
            jb_delete, jb_empty;
    private JTable table;// 声明表格
    // 创建员工表格模型
    private DefaultTableModel model = new DefaultTableModel(
            new Object[][] {}, new String[] { "员工编号", "员工姓名", "性别", "职务","基本工资","密码"});
    private List<Employee> list = EmployeeDao.selectEmployeeList();// 创建所有员工列表，并保存员工对象
 
    
    EmployeeUpKeep() {
        // 界面设置
        this.setTitle("--员工信息维护--");
        setBounds(220, 100, 1300, 650);
        this.setResizable(false);
        this.setLocationRelativeTo(null);
 
        // 创建一个对话面板,其上放置一个外部分割面板，并将它设置为框架的内容面板
        JPanel dialogPane = new JPanel();
        dialogPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        dialogPane.setBackground(new Color(198, 236, 253));
        dialogPane.setLayout(new BorderLayout());
        setContentPane(dialogPane);
 
        // 创建一个外部分割面板，水平左右放置组件。其中，左测放置一个内部分割面板，右测放置一个表格面板
        JSplitPane outerPane = new JSplitPane();// 创建外部分割面板
        outerPane.setOpaque(false);// 设置外部分割面板透明
        outerPane.setResizeWeight(0.1);// 设置外部分割面板宽度分配权限
        outerPane.setOrientation(JSplitPane.HORIZONTAL_SPLIT);//设置外部分割面板水平分配
        outerPane.setOneTouchExpandable(true);//设置外部分割面板可以有一个触发扩展
        dialogPane.add(outerPane, BorderLayout.CENTER);
        // 创建一个内部分割面板，垂直上下放置组件。其中，上方放置一个数据面板，下方放置一个按钮面板
        JSplitPane innerPane = new JSplitPane();// 创建内部分割面板
        innerPane.setOpaque(false);
        // 为一个内部分割面板设置边框说明
        innerPane.setBorder(new TitledBorder(
                new EtchedBorder(EtchedBorder.LOWERED, null, null),
                "员工信息维护", TitledBorder.LEADING, TitledBorder.TOP,
                new Font("微软雅黑", Font.PLAIN, 14),
                new Color(59, 59, 59)));
        innerPane.setResizeWeight(0.8);
        innerPane.setOrientation(JSplitPane.VERTICAL_SPLIT);//设置内部分割面板为垂直分配
        outerPane.setLeftComponent(innerPane);// 将内部分割面板设置在外部分割面板的左侧
        JPanel dataPanel = createDataPanel();// 调用创建数据面板方法，创建数据面板
        innerPane.setLeftComponent(dataPanel);// 将数据面板，设置在内部分割面板的左侧
        JPanel buttonPanel = createButtonPanel();// 调用创建按钮面板方法，创建按钮面板
        innerPane.setRightComponent(buttonPanel);// 将按钮面板设置在内部分割面板的下方
        JPanel tablePanel = createTablePanel();// 调用创建表格面板方法，创建表格面板
        outerPane.setRightComponent(tablePanel);// 将表格面板，设置在外部分割面板的右侧
    }
 
    
    private JPanel createDataPanel() {
        JPanel dataPanel = new JPanel(null);
        dataPanel.setBorder(new EmptyBorder(5, 5, 5, 10));
        dataPanel.setOpaque(false);
 
        JLabel jl_id = new JLabel("员工编号:");
        jl_id.setBounds(50, 20, 100, 25);
        dataPanel.add(jl_id);
 
        tf_id = new JTextField();
        tf_id.setBounds(140, 20, 170, 25);
 
        tf_id.setToolTipText("必须输入员工编号");
        tf_id.addFocusListener(new FocusAdapter() {
            @Override
            public void focusLost(FocusEvent e) {
                tf_id_focusLost();// 调用员工编号文本框加失去焦点事件响应方法
            }
        });
        dataPanel.add(tf_id);
 
        JLabel jl_name = new JLabel("员工姓名:");
        jl_name.setBounds(50, 60, 100, 25);
        dataPanel.add(jl_name);
 
        tf_name = new JTextField(10);
        tf_name.setBounds(140, 60, 170, 25);
        tf_name.setToolTipText("必须输入员工姓名");
        dataPanel.add(tf_name);
        tf_name.addFocusListener(new FocusAdapter() {//为员工名文本框添加失去焦点监听器
            @Override
            public void focusLost(FocusEvent e) {
                tf_name_focusLost();// 调用员工名文本框加失去焦点事件响应方法
            }
        });
 
        JLabel jl_type = new JLabel("性别:");
        jl_type.setBounds(50, 100, 150, 25);
        dataPanel.add(jl_type);
 
        cb_type = new JComboBox<String>(Constant.SEX);
        cb_type.setBounds(140, 100, 170, 25);
        dataPanel.add(cb_type);
 
        JLabel jl_author = new JLabel("基本工资：");
        jl_author.setBounds(50, 140, 150, 25);
        dataPanel.add(jl_author);
 
        tf_basePay = new JTextField(10);
        tf_basePay.setBounds(140, 140, 170, 25);
        dataPanel.add(tf_basePay);
 
        JLabel jl_translator = new JLabel("职务:");
        jl_translator.setBounds(50, 180, 150, 25);
        dataPanel.add(jl_translator);
 
        tf_post = new JTextField(10);
        tf_post.setBounds(140, 180, 170, 25);
        dataPanel.add(tf_post);
 
        JLabel jl_publisher = new JLabel("密码:");
        jl_publisher.setBounds(50, 220, 150, 25);
        dataPanel.add(jl_publisher);
 
        tf_password = new JTextField(10);
        tf_password.setBounds(140, 220, 170, 25);
        dataPanel.add(tf_password);
 
 
        return dataPanel;
    }
 
    
    private JPanel createButtonPanel() {
        JPanel buttonPanel = new JPanel(new GridBagLayout());//创建按钮面板，用网格包布局
        buttonPanel.setOpaque(false);
        ((GridBagLayout) buttonPanel
                .getLayout()).columnWidths = new int[] { 0, 60, 60,
                60, 60, 60, 0 };// 设置网格包布局各列宽度
        ((GridBagLayout) buttonPanel
                .getLayout()).columnWeights = new double[] { 0.5, 0.0,
                0.0, 0.0, 0.0, 0.0, 0.5 };// 设置网格包布局各列的宽度权限
 
        jb_insert = new JButton("添加");
        jb_insert.addActionListener(new ActionListener() {//为添加按钮添加单击事件监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                sb_insert_actionPerformed();// 调用添加按钮事件响应方法，添加员工
            }
        });
        buttonPanel.add(jb_insert,
                new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(0, 0, 0, 5), 0, 0));
 
        jb_update = new JButton("修改");
        jb_update.addActionListener(new ActionListener() {//为修改按钮添加单击事件监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                jb_update_actionPerformed();// 调用修改按钮事件响应方法，修改员工信息
            }
        });
        buttonPanel.add(jb_update,
                new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(0, 0, 0, 5), 0, 0));
 
        jb_delete = new JButton("删除");
        jb_delete.addActionListener(new ActionListener() {// 为删除按钮添加单击事件监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                jb_delete_actionPerformed();// 调用删除按钮事件响应方法，删除员工对象
            }
        });
        buttonPanel.add(jb_delete,
                new GridBagConstraints(3, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(0, 0, 0, 5), 0, 0));
 
        jb_cancel = new JButton("取消");
        jb_cancel.addActionListener(new ActionListener() {//为取消按钮添加单击事件监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                del_content();// 调用删除内容方法，清除数据面板中的数据
            }
        });
        buttonPanel.add(jb_cancel,
                new GridBagConstraints(4, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(0, 0, 0, 5), 0, 0));
 
        jb_close = new JButton("关闭");
        jb_close.addActionListener(new ActionListener() {//为关闭按钮添加单击事件监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                dispose();// 关闭员工维护界面
            }
        });
        buttonPanel.add(jb_close,
                new GridBagConstraints(5, 0, 1, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(0, 0, 0, 5), 0, 0));
 
        jb_empty = new JButton("清空所有员工");
        jb_empty.addActionListener(new ActionListener() {//为清空按钮添加单击事件监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                jb_empty_actionPerformed();// 调用清空按钮事件响应方法，清空所有员工
            }
        });
        buttonPanel.add(jb_empty,
                new GridBagConstraints(2, 1, 3, 1, 0.0, 0.0,
                        GridBagConstraints.CENTER,
                        GridBagConstraints.BOTH,
                        new Insets(25, 0, 0, 0), 0, 0));
        return buttonPanel;
    }
 
    
    private JPanel createTablePanel() {
        // 创建表格面板，采用边界布局
        JPanel tablePanel = new JPanel(new BorderLayout(5, 5));
        JScrollPane scrollPane = new JScrollPane();// 创建滚动面板
        tablePanel.add(scrollPane);// 将表格面板添加到滚动面板上
        table = new JTable(model);// 创建表格，并采用指定的表格模型
 
        for (int i = 0; i < list.size(); i++) {
            Employee Employee = list.get(i);
            model.addRow(new Object[] { Employee.getEmployeeNo(),
                    Employee.getEmployeeName(),
                    Employee.getSex(),
                    Employee.getPost(),
                    Employee.getBasePay(),
                    Employee.getPassword()
            });
        }
        table.addMouseListener(new MouseAdapter() {// 为表格添加鼠标事件监听器
            @Override
            public void mouseClicked(MouseEvent e) {
                // 调用表格鼠标单击事件响应方法，向左侧数据面板显示选中员工
                table_mouseClicked();
            }
        });
        scrollPane.setViewportView(table);
        return tablePanel;
    }
 
    
    public void del_content() {
        tf_id.setText("");
        tf_name.setText("");
        cb_type.setSelectedIndex(0);
        tf_basePay.setText("");
        tf_post.setText("");
        tf_password.setText("");
        tf_id.setEditable(true);
    }
 
    
    public void tf_id_focusLost() {
        // 通过员工编号，获取员工对象
        Employee Employee = EmployeeDao.getEmployeeByEmployeeNo(tf_id.getText().trim());
        if (Employee != null) {// 判断员工对象是否存在，若存在，清除数据，重新输入员工编号
            JOptionPane.showMessageDialog(null,
                    "员工编号已经存在，请重新输入员工编号！");
            del_content(); // 清除数据面板中的数据
        }
    }
 
    
    public void tf_name_focusLost() {
        Employee Employee = EmployeeDao.getEmployeeByEmployeeNo(tf_name.getText().trim());
        if (Employee != null) {
            JOptionPane.showMessageDialog(null, "员工名已经存在，请重新输入员工名！");
            tf_name.setText("");
        }
    }
 
    
    public void refresh() {
        model.setRowCount(0);// 清除表格模型中的数据
        list = EmployeeDao.selectEmployeeList();// 获取员工对象列表
        for (int i = 0; i < list.size(); i++) {// 重新项表格模型中添加数据
            Employee Employee = list.get(i);
            model.addRow(new Object[] { Employee.getEmployeeNo(),
                    Employee.getEmployeeName(),
                    Employee.getSex(),
                    Employee.getPost(),
                    Employee.getBasePay(),
                    Employee.getPassword()
            });
        }
        del_content();// 清除数据面板中的数据
 
    }
 
    
    public void table_mouseClicked() {
        // 获取选中员工的信息
        Employee Employee_old = list.get(table.getSelectedRow());
        // 在数据面板中设置对应的员工数据
        tf_id.setText(Employee_old.getEmployeeNo());
        tf_name.setText(Employee_old.getEmployeeName());
        cb_type.setSelectedItem(Employee_old.getSex());
        tf_basePay.setText(String.valueOf(Employee_old.getBasePay()));
        tf_password.setText(Employee_old.getPassword());
        tf_post.setText(Employee_old.getPost());
        tf_id.setEditable(false);// 设置读者员工文本框不可编辑
    }
 
    
    public void sb_insert_actionPerformed() {
        Employee Employee = new Employee();// 创建一个员工对象
        // 设置员工对象的属性值
        Employee.setEmployeeNo(tf_id.getText().trim());
        Employee.setEmployeeName(tf_name.getText().trim());
        Employee.setSex(cb_type.getSelectedItem().toString());
        Employee.setBasePay(new Integer(tf_basePay.getText().trim()));
        Employee.setPassword(tf_password.getText().trim());
        Employee.setPost(tf_post.getText().trim());
 
        // 判断员工名或员工编号不允许为空？若空，则给出提示，并返回
        if (tf_name.getText().trim().equals("")
                || tf_id.getText().trim().equals("")) {
            JOptionPane.showMessageDialog(null, "员工信息不能为空！");
            return;
        } else {// 若不空，则执行添加员工对象操作
            int i = EmployeeDao.insertEmployee(Employee);// 执行添加操作
            if (i == 1) {// 判断添加操作是否成功？若成功，则向表格模型添加这条数据
                model.addRow(new Object[] { Employee.getEmployeeNo(),
                        Employee.getEmployeeName(),
                        Employee.getSex(),
                        Employee.getPost(),
                        Employee.getBasePay(),
                        Employee.getPassword()
                });
                refresh();
            }
            del_content();
        }
    }
 
    
    public void jb_update_actionPerformed() {
        Employee Employee = new Employee();// 创建一个员工对象
        Employee.setEmployeeNo(tf_id.getText().trim());
        Employee.setEmployeeName(tf_name.getText().trim());
        Employee.setSex(cb_type.getSelectedItem().toString());
        Employee.setBasePay(new Integer(tf_basePay.getText().trim()));
        Employee.setPassword(tf_password.getText().trim());
        Employee.setPost(tf_post.getText().trim());
 
        if (tf_name.getText().trim().equals("")
                || tf_id.getText().trim().equals("")) {
            JOptionPane.showMessageDialog(null, "员工信息不能为空！");
            return;
        } else {// 若不空，则执行添加员工对象操作
            int i = EmployeeDao.upDateEmployee(Employee);
            if (i == 1) {
                JOptionPane.showMessageDialog(null, "员工信息修改成功！");
            }
 
            refresh();// 更新表格内容
            del_content();
        }
    }
 
    
    public void jb_delete_actionPerformed() {
        String id = tf_id.getText().trim(); // 获取用户编号
        // 调用确认对话框，询问是否删除员工？
        int m = JOptionPane.showConfirmDialog(null, "你确认要删除这条员工信息吗?",
                "删除员工信息", JOptionPane.YES_NO_OPTION);
        if (m == JOptionPane.YES_OPTION) {// 如果确定，则执行删除操作
            if (EmployeeDao.deleteEmployee(id) == 1) {// 执行用户删除操作
                refresh();// 更新表格内容
                JOptionPane.showMessageDialog(null, "员工信息删除成功！");
            }
            del_content();// 清除数据面板内容
        }
    }
 
    
    public void jb_empty_actionPerformed() {
        int m = JOptionPane.showConfirmDialog(null, "你确认要删除所有员工信息吗?",
                "清空员工信息", JOptionPane.YES_NO_OPTION);
        if (m == JOptionPane.YES_OPTION) {
            int n = JOptionPane.showConfirmDialog(null,
                    "真的确认清空所有员工数据吗?", "清空员工信息再次确认",
                    JOptionPane.YES_NO_OPTION);
            if (n == JOptionPane.YES_OPTION) {
                EmployeeDao.emptyEmployee();
                refresh();// 更新表格内容
                del_content();// 清除数据面板内容
            }
        }
    }
 
    // 测试方法：用于员工维护的测试
    public static void main(String[] args) {
        new EmployeeUpKeep();
    }
}

package windows;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.BevelBorder;
import Login.LoginView;
import data.BaseDao1;
 
public class MainFrame extends PublicJFrame {
    
    private JMenuItem mi_inventory_upkeep;// 声明库存维护菜单项
    private JMenuItem mi_stock_upkeep;// 声明进货维护菜单项
    private JMenuItem mi_supplier_upkeep;// 声明员工维护菜单项
    private JMenuItem mi_item_upkeep;// 声明商品维护菜单项
    private JMenuItem mi_employee_upkeep;//声明员工维护菜单
    private JMenuItem mi_item_query;// 声明商品查询菜单项
    private JMenuItem mi_employee_query;// 声明员工查询菜单项
    private JMenuItem mi_inventory_query;// 声明库存查询菜单项
    private JMenuItem mi_sale_query;// 声明销售查询菜单项
    private JMenuItem mi_stock_query;// 声明进货查询菜单项
    private JMenuItem mi_supplier_query;// 声明供货商查询菜单项
    private JMenuItem mi_exit;// 声明退出系统菜单项
    private JButton bt_employee_upkeep;// 声明读者维护按钮
    private JButton bt_book_upkeep;// 声明商品维护按钮
    private JButton bt_reader_query;// 声明读者查询按钮
    private JButton bt_book_query;// 声明商品查询按钮
    private JButton bt_exit;// 声明退出系统按钮
 
    
    public MainFrame() {
        //第1步：系统主界面设置
        this.setTitle("商品销售管理系统");// 设置主界面标题
        this.setBounds(520,0,1000,1050);
        //this.setExtendedState(Frame.MAXIMIZED_BOTH);// 设置主界面窗口最大化
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel contentPane = new JPanel(){//设置背景图片
            @Override
            public void paint(Graphics g){
                ImageIcon icon = new ImageIcon("images/5.png");
                Image image = icon.getImage();
                g.drawImage(image,0,0,null);
            }
        };
        this.add(contentPane);
        this.setVisible(true);
        //第2步：创建、设置菜单栏。先调用创建系统菜单栏方法，创建系统菜单栏,再在主界面设置菜单栏
        this.setJMenuBar(createMenuBar());
        //第3步： 创建、设置工具栏。先调用创建系统工具栏方法，创建系统工具栏，再将工具栏添加到界面的上方
        this.add(createToolBar(),BorderLayout.NORTH);
        this.setVisible(true);
        this.setPurView(LoginView.a);
    }
 
    
    private JMenuBar createMenuBar() {
        // 第1步：创建菜单栏对象
        JMenuBar menuBar = new JMenuBar();
        //第2步：创建菜单。如基础维护菜单，又包含用户维护、读者维护、商品维护菜单项
        JMenu menu_upkeep = new JMenu("基础维护"); // 创建"基础维护"菜单
        //第3步：创建菜单项，并为菜单项设置单击事件监听器
        mi_supplier_upkeep = new JMenuItem("供应商信息维护"); // 创建“用户维护”菜单项
        mi_supplier_upkeep.addActionListener(new ActionListener() {//添加单击事件监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                supplier_upkeep_actionPerformed();// 调用“供应商信息维护”响应方法
            }
        });
        //第4步：将菜单项添加到菜单上
        menu_upkeep.add(mi_supplier_upkeep);// 将“供应商信息维护”菜单项添加到“基础维护”菜单
 
 
        mi_item_upkeep = new JMenuItem("商品信息维护"); // 创建"商品维护"菜单项
        mi_item_upkeep.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                item_upkeep_actionPerformed();// 调用"商品维护"响应方法
            }
        });
        menu_upkeep.add(mi_item_upkeep);
 
        mi_stock_upkeep = new JMenuItem("进货信息维护"); // 创建"商品维护"菜单项
        mi_stock_upkeep.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                stock_upkeep_actionPerformed();// 调用"商品维护"响应方法
            }
        });
        menu_upkeep.add(mi_stock_upkeep);
 
        mi_inventory_upkeep = new JMenuItem("库存信息维护"); // 创建"商品维护"菜单项
        mi_inventory_upkeep.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                inventory_upkeep_actionPerformed();// 调用"商品维护"响应方法
            }
        });
        menu_upkeep.add(mi_inventory_upkeep);
        mi_employee_upkeep = new JMenuItem("员工信息维护"); // 创建"商品维护"菜单项
        mi_employee_upkeep.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                employee_upkeep_actionPerformed();// 调用"商品维护"响应方法
            }
        });
        menu_upkeep.add(mi_employee_upkeep);
        //第5步：将菜单添加到菜单栏上
        menuBar.add(menu_upkeep);// 将"基础维护"菜单添加到系统菜单栏
 
        JMenu menu_query = new JMenu("查询统计"); // 创建"查询统计"菜单
        mi_item_query = new JMenuItem("商品查询"); // 创建"商品查询"菜单项
        mi_item_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                item_query_actionPerformed();// 调用"商品查询"响应方法
            }
        });
        menu_query.add(mi_item_query);
        mi_employee_query = new JMenuItem("员工查询"); // 创建"读者查询"菜单项
        mi_employee_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                employee_query_actionPerformed();// 调用"读者查询"响应方法
            }
        });
        menu_query.add(mi_employee_query);
        mi_inventory_query = new JMenuItem("库存查询"); // 创建"读者查询"菜单项
        mi_inventory_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                inventory_query_actionPerformed();// 调用"读者查询"响应方法
            }
        });
        menu_query.add(mi_inventory_query);
 
        mi_sale_query = new JMenuItem("销售查询"); // 创建"销售查询"菜单项
        mi_sale_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                sale_query_actionPerformed();// 调用"读者查询"响应方法
            }
        });
        menu_query.add(mi_sale_query);
 
        mi_stock_query = new JMenuItem("进货查询"); // 创建"进货查询"菜单项
        mi_stock_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                stock_query_actionPerformed();// 调用"读者查询"响应方法
            }
        });
        menu_query.add(mi_stock_query);
 
        mi_supplier_query = new JMenuItem("供货商查询"); // 创建"供货商查询"菜单项
        mi_supplier_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                supplier_query_actionPerformed();// 调用"读者查询"响应方法
            }
        });
        menu_query.add(mi_supplier_query);
        menuBar.add(menu_query);//查询菜单栏
 
        JMenu menu_management = new JMenu("系统管理");// 创建"系统管理"菜单
        mi_exit = new JMenuItem("退出系统"); // 创建"退出系统"菜单项
        mi_exit.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                exit_actionPerformed();// 调用"退出系统"响应方法
            }
        });
        menu_management.add(mi_exit);
        menuBar.add(menu_management);
        //第6步：返回菜单栏。
        return menuBar;
    }
 
    
    private JToolBar createToolBar() {
        //第1步：创建、设置工具栏
        JToolBar toolBar = new JToolBar("商品管理系统工具栏");// 创建工具栏对象
        toolBar.setFloatable(false); // 设置工具栏不可浮动
        // 设置工具栏边框导角方式
        toolBar.setBorder(new BevelBorder(BevelBorder.LOWERED));
        //第2步： 创建、设置工具栏上的快捷按钮
        bt_employee_upkeep = new JButton("员工维护");// 创建"读者维护"按钮
        // 创建"读者维护"图标
        ImageIcon icon_reader_upkeep = new ImageIcon("images/reader_upkeep.png");
        bt_employee_upkeep.setIcon(icon_reader_upkeep);// 为"读者维护"按钮设置图标
        bt_employee_upkeep.setToolTipText("员工维护");// 为"读者维护"按钮设置提示
        // 将"读者维护"按钮注册单击事件监听器
        bt_employee_upkeep.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                employee_upkeep_actionPerformed();// 调用"读者维护'响应方法
            }
        });
        //第3步：将按钮添加到工具栏上
        toolBar.add(bt_employee_upkeep);// 将“读者维护”按钮添加到工具栏
 
        bt_book_upkeep = new JButton("商品信息维护");
        ImageIcon icon_book_upkeep = new ImageIcon("images/book_upkeep.png");
        bt_book_upkeep.setIcon(icon_book_upkeep);
        toolBar.add(bt_book_upkeep);
        bt_book_upkeep.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                item_upkeep_actionPerformed();// 调用“商品维护”响应方法
            }
        });
 
 
        bt_reader_query = new JButton("员工查询");
        ImageIcon icon_reader_query = new ImageIcon("images/reader_query.png");
        bt_reader_query.setIcon(icon_reader_query);
        toolBar.add(bt_reader_query);
        bt_reader_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                employee_query_actionPerformed();// 调用“读者查询”响应方法
            }
        });
 
        bt_book_query = new JButton("商品查询");
        ImageIcon icon_book_query = new ImageIcon("images/book_query.png");
        bt_book_query.setIcon(icon_book_query);
        toolBar.add(bt_book_query);
        bt_book_query.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                item_query_actionPerformed();// 调用“商品查询”响应方法
            }
        });
 
        bt_exit = new JButton("退出系统");
        ImageIcon icon_exit = new ImageIcon("images/exit.png");
        bt_exit.setIcon(icon_exit);
        toolBar.add(bt_exit);
        bt_exit.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                exit_actionPerformed();// 调用“退出系统"响应方法
            }
        });
 
        //第4步：返回工具栏
        return toolBar;
    }
 
    
    void setPurView(String purView) {
        switch (purView) {
            case "0"://用户权限为0，为操作员
                mi_supplier_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_item_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_stock_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_inventory_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_item_query.setEnabled(false);// 声明商品查询菜单项
                mi_employee_query.setEnabled(false);// 声明员工查询菜单项
                mi_inventory_query.setEnabled(false);// 声明库存查询菜单项
                mi_sale_query.setEnabled(false);// 声明销售查询菜单项
                mi_stock_query.setEnabled(false);// 声明进货查询菜单项
                mi_supplier_query.setEnabled(false);// 声明供货商查询菜单项
                bt_book_upkeep.setEnabled(false);
                bt_employee_upkeep.setEnabled(false);
                mi_employee_upkeep.setEnabled(false);
                break;
            case "1"://用户权限为1，为管理员
                break;
            default://用户权限为其他，为一般访客
                bt_reader_query.setEnabled(false);
                mi_supplier_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_item_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_stock_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_inventory_upkeep.setEnabled(false);//设置“用户维护”菜单项不可用
                mi_item_query.setEnabled(false);// 声明商品查询菜单项
                mi_employee_query.setEnabled(false);// 声明员工查询菜单项
                mi_inventory_query.setEnabled(false);// 声明库存查询菜单项
                mi_sale_query.setEnabled(false);// 声明销售查询菜单项
                mi_stock_query.setEnabled(false);// 声明进货查询菜单项
                mi_supplier_query.setEnabled(false);// 声明供货商查询菜单项
                bt_book_upkeep.setEnabled(false);
                bt_employee_upkeep.setEnabled(false);
                mi_employee_upkeep.setEnabled(false);
        }
    }
 
   
    private void supplier_upkeep_actionPerformed() {
        new SupplierUpKeep();// 创建“供应商信息维护”界面
    }
 
    
    private void stock_upkeep_actionPerformed() {
        new StockUpKeep();// 创建“进货信息维护”界面
    }
 
    
    private void inventory_upkeep_actionPerformed() {
        new InventoryUpKeep();// 创建“进货信息维护”界面
    }
 
    
    private void employee_upkeep_actionPerformed() {
        new EmployeeUpKeep();// 创建“进货信息维护”界面
    }
 
    
    private void item_upkeep_actionPerformed() {
        new ItemUpKeep();// 创建“商品维护”界面
    }
 
    
    private void item_query_actionPerformed() {
        new ItemQuery();// 创建“商品查询”界面
    }
 
    
    private void employee_query_actionPerformed() {
        new EmployeeQuery();// 创建“员工查询”界面
    }
 
    
    private void inventory_query_actionPerformed() {
        new InventoryQuery();// 创建“员工查询”界面
    }
    
    
    private void sale_query_actionPerformed() {
        new SaleQuery();// 创建“员工查询”界面
    }
 
    
    private void stock_query_actionPerformed() {
        new StockQuery();// 创建“员工查询”界面
    }
    
    
    private void supplier_query_actionPerformed() {
        new SupplierQuery();// 创建“员工查询”界面
    }
    
    
    private void exit_actionPerformed() {
        BaseDao1.close();// 关闭与数据库的连接
        System.exit(0);// 退出系统
    }
 
    // 测试方法：用于主界面的测试
    public static void main(String args[]) {
        new MainFrame();// 创建系统主界面匿名对象
    }
}