Java-单机版的书店管理系统(练习设计模块和思想_系列 三 )

Java-单机版的书店管理系统(练习设计模块和思想_系列 二 )：
http://blog.csdn.net/qq_26525215/article/details/51089734

Java-单机版的书店管理系统(练习设计模块和思想_系列 一 )：
http://blog.csdn.net/qq_26525215/article/details/51073546

介绍

今天对系列二的一个添加用户的输入小bug进行了解决，
增加了用户模块的，删除用户，和修改用户模块。

下面的代码是相对于系列二来说进行了修改或者是增加的类.

先看AddPanel类的修改：
在收集参数的时候进行防范就可防止那个bug了。

cn.hncu.bookStore.user.ui;

AddPanel类：（添加用户模块）

/* * AddPanel.java * * Created on __DATE__, __TIME__ */package cn.hncu.bookStore.user.ui;import javax.swing.JFrame;import javax.swing.JOptionPane;import cn.hncu.bookStore.common.UserTypeEnum;import cn.hncu.bookStore.user.business.ebi.UserEbi;import cn.hncu.bookStore.user.business.factory.UserEbiFactory;import cn.hncu.bookStore.user.vo.UserModel;import cn.hncu.bookStore.util.FileIoUtil;/** * * @author  陈浩翔 */public class AddPanel extends javax.swing.JPanel {    private JFrame mainFrame = null;    /** Creates new form AddPanel */    public AddPanel(JFrame mainFrame) {        this.mainFrame = mainFrame;        initComponents();        myInitData();    }    private void myInitData() {        for (UserTypeEnum type : UserTypeEnum.values()) {            combType.addItem(type.getName());        }    }    /** This method is called from within the constructor to     * initialize the form.     * WARNING: Do NOT modify this code. The content of this method is     * always regenerated by the Form Editor.     */    //GEN-BEGIN:initComponents    // <editor-fold defaultstate="collapsed" desc="Generated Code">    private void initComponents() {        jLabel1 = new javax.swing.JLabel();        jLabel2 = new javax.swing.JLabel();        tfdName = new javax.swing.JTextField();        jLabel3 = new javax.swing.JLabel();        tfdUuid = new javax.swing.JTextField();        jLabel4 = new javax.swing.JLabel();        tfdPwd2 = new javax.swing.JPasswordField();        jLabel5 = new javax.swing.JLabel();        jLabel6 = new javax.swing.JLabel();        combType = new javax.swing.JComboBox();        tfdPwd = new javax.swing.JPasswordField();        btnAdd = new javax.swing.JButton();        btnBack = new javax.swing.JButton();        setMinimumSize(new java.awt.Dimension(800, 600));        setLayout(null);        jLabel1.setFont(new java.awt.Font("微软雅黑", 1, 48));        jLabel1.setForeground(new java.awt.Color(204, 0, 0));        jLabel1.setText("\u6dfb\u52a0\u7528\u6237");        add(jLabel1);        jLabel1.setBounds(330, 30, 230, 80);        jLabel2.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel2.setText("\u7528\u6237\u7c7b\u578b:");        add(jLabel2);        jLabel2.setBounds(90, 310, 90, 30);        tfdName.setFont(new java.awt.Font("Dialog", 1, 18));        tfdName.setAutoscrolls(false);        add(tfdName);        tfdName.setBounds(470, 160, 120, 30);        jLabel3.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel3.setText("uuid:");        add(jLabel3);        jLabel3.setBounds(120, 160, 50, 30);        tfdUuid.setFont(new java.awt.Font("Dialog", 1, 12));        add(tfdUuid);        tfdUuid.setBounds(190, 160, 110, 30);        jLabel4.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel4.setText("\u59d3\u540d:");        add(jLabel4);        jLabel4.setBounds(410, 160, 50, 30);        tfdPwd2.setFont(new java.awt.Font("宋体", 1, 18));        add(tfdPwd2);        tfdPwd2.setBounds(470, 240, 170, 30);        jLabel5.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel5.setText("\u5bc6\u7801:");        add(jLabel5);        jLabel5.setBounds(120, 240, 50, 30);        jLabel6.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel6.setText("\u786e\u8ba4\u5bc6\u7801:");        add(jLabel6);        jLabel6.setBounds(380, 240, 90, 30);        combType.setFont(new java.awt.Font("Dialog", 1, 18));        combType.setForeground(new java.awt.Color(51, 51, 255));        combType.setModel(new javax.swing.DefaultComboBoxModel(                new String[] { "请选择..." }));        add(combType);        combType.setBounds(190, 310, 160, 30);        tfdPwd.setFont(new java.awt.Font("宋体", 1, 18));        add(tfdPwd);        tfdPwd.setBounds(190, 240, 160, 30);        btnAdd.setFont(new java.awt.Font("Dialog", 1, 24));        btnAdd.setForeground(new java.awt.Color(0, 204, 204));        btnAdd.setText("\u6dfb\u52a0");        btnAdd.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnAddActionPerformed(evt);            }        });        add(btnAdd);        btnAdd.setBounds(190, 430, 120, 60);        btnBack.setFont(new java.awt.Font("Dialog", 1, 24));        btnBack.setForeground(new java.awt.Color(0, 204, 204));        btnBack.setText("\u8fd4\u56de");        btnBack.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnBackActionPerformed(evt);            }        });        add(btnBack);        btnBack.setBounds(520, 430, 120, 60);    }// </editor-fold>    //GEN-END:initComponents    private void back() {        mainFrame.setContentPane(new ListPanel(mainFrame));        mainFrame.validate();    }    /**     *监听返回按钮     * @param 返回按钮的点击监听     */    private void btnBackActionPerformed(java.awt.event.ActionEvent evt) {        back();    }    private void btnAddActionPerformed(java.awt.event.ActionEvent evt) {        //1收集参数        String uuid = tfdUuid.getText();        String name = tfdName.getText();        String pwd = new String(tfdPwd.getPassword());        String pwd2 = new String(tfdPwd2.getPassword());        //System.out.println(uuid);        //System.out.println(uuid+","+name+","+pwd);        if (uuid.equals("") || uuid.equals(null)) {            JOptionPane.showMessageDialog(mainFrame, "用户ID为空，请重新输入！");            return;        }        if (name.equals("") || name.equals(null)) {            JOptionPane.showMessageDialog(mainFrame, "用户名为空，请重新输入！");            return;        }        if (!pwd.equals(pwd2) || pwd.equals("") || pwd.equals(null)                || pwd2.equals("") || pwd2.equals(null)) {            JOptionPane.showMessageDialog(mainFrame, "两次密码输入不一致或密码为空，请重新输入！");            return;        }        int type = 0;        try {            type = UserTypeEnum.getTypeByName(combType.getSelectedItem()                    .toString());        } catch (Exception e) {            JOptionPane.showMessageDialog(mainFrame, "请指定用户类型!");            return;        }        //2组织参数        UserModel user = new UserModel();        user.setName(name);        user.setPwd(pwd);        user.setType(type);        user.setUuid(uuid);        //3调用逻辑层        UserEbi ebi = UserEbiFactory.getUserEbi();        //4根据调用返回结果导向不同页面        if (ebi.create(user)) {            back();        } else {            JOptionPane.showMessageDialog(null, "该用户已经存在!");        }    }    //GEN-BEGIN:variables    // Variables declaration - do not modify    private javax.swing.JButton btnAdd;    private javax.swing.JButton btnBack;    private javax.swing.JComboBox combType;    private javax.swing.JLabel jLabel1;    private javax.swing.JLabel jLabel2;    private javax.swing.JLabel jLabel3;    private javax.swing.JLabel jLabel4;    private javax.swing.JLabel jLabel5;    private javax.swing.JLabel jLabel6;    private javax.swing.JTextField tfdName;    private javax.swing.JPasswordField tfdPwd;    private javax.swing.JPasswordField tfdPwd2;    private javax.swing.JTextField tfdUuid;    // End of variables declaration//GEN-END:variables}

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cn.hncu.bookStore.user.ui;

DeletePanel类：（删除用户模块）

/* * DeletePanel.java * * Created on __DATE__, __TIME__ */package cn.hncu.bookStore.user.ui;import javax.swing.JFrame;import javax.swing.JOptionPane;import cn.hncu.bookStore.common.UserTypeEnum;import cn.hncu.bookStore.user.business.ebi.UserEbi;import cn.hncu.bookStore.user.business.factory.UserEbiFactory;import cn.hncu.bookStore.user.vo.UserModel;import cn.hncu.bookStore.util.FileIoUtil;/** *  * @author 陈浩翔 * * @version 1.0 */public class DeletePanel extends javax.swing.JPanel {    private JFrame mainFrame = null;    private String uuid = null;    /** Creates new form DeletePanel      * @param uuid */    public DeletePanel(JFrame mainFrame, String uuid) {        this.mainFrame = mainFrame;        this.uuid = uuid;        initComponents();        myInitData();    }    private void myInitData() {        UserEbi user = UserEbiFactory.getUserEbi();        UserModel userModel = user.getSingle(uuid);        tfdName.setText(userModel.getName());        tfdUuid.setText(userModel.getUuid());        tfdPwd.setText(userModel.getPwd());        tfdType.setText(UserTypeEnum.getNameByType(userModel.getType()));        tfdName.setEditable(false);        tfdPwd.setEditable(false);        tfdType.setEditable(false);        tfdUuid.setEditable(false);    }    //GEN-BEGIN:initComponents    // <editor-fold defaultstate="collapsed" desc="Generated Code">    private void initComponents() {        jLabel1 = new javax.swing.JLabel();        jLabel2 = new javax.swing.JLabel();        tfdName = new javax.swing.JTextField();        jLabel3 = new javax.swing.JLabel();        tfdUuid = new javax.swing.JTextField();        jLabel4 = new javax.swing.JLabel();        jLabel5 = new javax.swing.JLabel();        tfdPwd = new javax.swing.JTextField();        tfdType = new javax.swing.JTextField();        btnBack = new javax.swing.JButton();        btnDelete = new javax.swing.JButton();        setMinimumSize(new java.awt.Dimension(800, 600));        setLayout(null);        jLabel1.setFont(new java.awt.Font("微软雅黑", 1, 48));        jLabel1.setForeground(new java.awt.Color(204, 0, 0));        jLabel1.setText("\u5220\u9664\u7528\u6237");        add(jLabel1);        jLabel1.setBounds(330, 30, 230, 80);        jLabel2.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel2.setText("\u7528\u6237\u7c7b\u578b:");        add(jLabel2);        jLabel2.setBounds(100, 310, 90, 30);        tfdName.setFont(new java.awt.Font("Dialog", 1, 18));        tfdName.setAutoscrolls(false);        add(tfdName);        tfdName.setBounds(480, 160, 120, 30);        jLabel3.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel3.setText("uuid:");        add(jLabel3);        jLabel3.setBounds(130, 160, 50, 30);        tfdUuid.setFont(new java.awt.Font("Dialog", 0, 11));        add(tfdUuid);        tfdUuid.setBounds(200, 160, 110, 30);        jLabel4.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel4.setText("\u59d3\u540d:");        add(jLabel4);        jLabel4.setBounds(420, 160, 50, 30);        jLabel5.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel5.setText("\u5bc6\u7801:");        add(jLabel5);        jLabel5.setBounds(130, 240, 50, 30);        tfdPwd.setFont(new java.awt.Font("Tahoma", 1, 12));        add(tfdPwd);        tfdPwd.setBounds(200, 240, 160, 30);        tfdType.setFont(new java.awt.Font("Dialog", 1, 12));        add(tfdType);        tfdType.setBounds(200, 310, 160, 30);        btnBack.setFont(new java.awt.Font("Dialog", 1, 24));        btnBack.setForeground(new java.awt.Color(0, 204, 204));        btnBack.setText("\u8fd4\u56de");        btnBack.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnBackActionPerformed(evt);            }        });        add(btnBack);        btnBack.setBounds(540, 450, 120, 60);        btnDelete.setFont(new java.awt.Font("Dialog", 1, 24));        btnDelete.setForeground(new java.awt.Color(0, 204, 204));        btnDelete.setText("\u5220\u9664");        btnDelete.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnDeleteActionPerformed(evt);            }        });        add(btnDelete);        btnDelete.setBounds(210, 450, 120, 60);    }// </editor-fold>    //GEN-END:initComponents    private void btnDeleteActionPerformed(java.awt.event.ActionEvent evt) {        //3调用逻辑层        if (UserEbiFactory.getUserEbi().delete(uuid)) {            back();        } else {            JOptionPane.showMessageDialog(mainFrame, "该用户已经不存在!");        }        //4根据调用返回结果导向不同页面    }    private void btnBackActionPerformed(java.awt.event.ActionEvent evt) {        back();    }    private void back() {        mainFrame.setContentPane(new ListPanel(mainFrame));        mainFrame.validate();    }    //GEN-BEGIN:variables    // Variables declaration - do not modify    private javax.swing.JButton btnBack;    private javax.swing.JButton btnDelete;    private javax.swing.JLabel jLabel1;    private javax.swing.JLabel jLabel2;    private javax.swing.JLabel jLabel3;    private javax.swing.JLabel jLabel4;    private javax.swing.JLabel jLabel5;    private javax.swing.JTextField tfdName;    private javax.swing.JTextField tfdPwd;    private javax.swing.JTextField tfdType;    private javax.swing.JTextField tfdUuid;    // End of variables declaration//GEN-END:variables}

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cn.hncu.bookStore.user.ui;

UpdatePanel类：（修改用户模块）

/* * UpdatePanel.java * * Created on __DATE__, __TIME__ */package cn.hncu.bookStore.user.ui;import javax.swing.JFrame;import javax.swing.JOptionPane;import cn.hncu.bookStore.common.UserTypeEnum;import cn.hncu.bookStore.user.business.ebi.UserEbi;import cn.hncu.bookStore.user.business.factory.UserEbiFactory;import cn.hncu.bookStore.user.vo.UserModel;/** *  * @author 陈浩翔 * * @version 1.0 */public class UpdatePanel extends javax.swing.JPanel {    private JFrame mainFrame = null;    private String uuid = null;    /**     * Creates new form UpdatePanel     *      * @param uuid     * @param mainFrame     */    public UpdatePanel(JFrame mainFrame, String uuid) {        this.mainFrame = mainFrame;        this.uuid = uuid;        initComponents();        myInitData();    }    private void myInitData() {        UserEbi ebi = UserEbiFactory.getUserEbi();        UserModel user = ebi.getSingle(uuid);        tfdUuid.setText(user.getUuid());        tfdUuid.setEditable(false);        tfdName.setText(user.getName());        tfdPwd.setText(user.getPwd());        tfdPwd2.setText(user.getPwd());        combType.removeAllItems();        String usert = UserTypeEnum.getNameByType(user.getType());        combType.addItem(usert);        for (UserTypeEnum userType : UserTypeEnum.values()) {            if (!userType.getName().equals(usert)) {                combType.addItem(userType.getName());            }        }    }    // GEN-BEGIN:initComponents    // <editor-fold defaultstate="collapsed" desc="Generated Code">    private void initComponents() {        jLabel1 = new javax.swing.JLabel();        jLabel2 = new javax.swing.JLabel();        tfdName = new javax.swing.JTextField();        jLabel3 = new javax.swing.JLabel();        tfdUuid = new javax.swing.JTextField();        jLabel4 = new javax.swing.JLabel();        tfdPwd2 = new javax.swing.JPasswordField();        jLabel5 = new javax.swing.JLabel();        jLabel6 = new javax.swing.JLabel();        tfdPwd = new javax.swing.JPasswordField();        combType = new javax.swing.JComboBox();        btnBack = new javax.swing.JButton();        btnUpdate = new javax.swing.JButton();        setMinimumSize(new java.awt.Dimension(800, 600));        setLayout(null);        jLabel1.setFont(new java.awt.Font("微软雅黑", 1, 48));        jLabel1.setForeground(new java.awt.Color(204, 0, 0));        jLabel1.setText("\u4fee\u6539\u7528\u6237");        add(jLabel1);        jLabel1.setBounds(320, 30, 230, 80);        jLabel2.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel2.setText("\u7528\u6237\u7c7b\u578b:");        add(jLabel2);        jLabel2.setBounds(90, 310, 90, 30);        tfdName.setFont(new java.awt.Font("Dialog", 1, 18));        tfdName.setAutoscrolls(false);        add(tfdName);        tfdName.setBounds(470, 160, 120, 30);        jLabel3.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel3.setText("uuid:");        add(jLabel3);        jLabel3.setBounds(120, 160, 50, 30);        tfdUuid.setFont(new java.awt.Font("Dialog", 1, 12));        add(tfdUuid);        tfdUuid.setBounds(190, 160, 110, 30);        jLabel4.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel4.setText("\u59d3\u540d:");        add(jLabel4);        jLabel4.setBounds(410, 160, 50, 30);        tfdPwd2.setFont(new java.awt.Font("Dialog", 1, 18));        add(tfdPwd2);        tfdPwd2.setBounds(470, 240, 170, 30);        jLabel5.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel5.setText("\u5bc6\u7801:");        add(jLabel5);        jLabel5.setBounds(120, 240, 50, 30);        jLabel6.setFont(new java.awt.Font("微软雅黑", 0, 18));        jLabel6.setText("\u786e\u8ba4\u5bc6\u7801:");        add(jLabel6);        jLabel6.setBounds(380, 240, 90, 30);        tfdPwd.setFont(new java.awt.Font("宋体", 1, 18));        add(tfdPwd);        tfdPwd.setBounds(190, 240, 160, 30);        combType.setFont(new java.awt.Font("Dialog", 1, 12));        combType.setForeground(new java.awt.Color(51, 0, 255));        combType.setModel(new javax.swing.DefaultComboBoxModel(                new String[] { "" }));        add(combType);        combType.setBounds(190, 310, 170, 30);        btnBack.setFont(new java.awt.Font("Dialog", 1, 24));        btnBack.setForeground(new java.awt.Color(0, 204, 204));        btnBack.setText("\u8fd4\u56de");        btnBack.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnBackActionPerformed(evt);            }        });        add(btnBack);        btnBack.setBounds(500, 430, 120, 60);        btnUpdate.setFont(new java.awt.Font("Dialog", 1, 24));        btnUpdate.setForeground(new java.awt.Color(0, 204, 204));        btnUpdate.setText("\u4fee\u6539");        btnUpdate.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnUpdateActionPerformed(evt);            }        });        add(btnUpdate);        btnUpdate.setBounds(170, 430, 120, 60);    }// </editor-fold>        // GEN-END:initComponents    private void btnUpdateActionPerformed(java.awt.event.ActionEvent evt) {        // 1收集参数        String uuid = tfdUuid.getText();        String name = tfdName.getText();        String pwd = new String(tfdPwd.getPassword());        String pwd2 = new String(tfdPwd2.getPassword());        if (uuid.equals("") || uuid.equals(null)) {            JOptionPane.showMessageDialog(mainFrame, "用户ID为空，请重新输入！");            return;        }        if (name.equals("") || name.equals(null)) {            JOptionPane.showMessageDialog(mainFrame, "用户名为空，请重新输入！");            return;        }        if (!pwd.equals(pwd2) || pwd.equals("") || pwd.equals(null)                || pwd2.equals("") || pwd2.equals(null)) {            JOptionPane.showMessageDialog(mainFrame, "两次密码输入不一致或密码为空，请重新输入！");            return;        }        int type = 0;        try {            type = UserTypeEnum.getTypeByName(combType.getSelectedItem()                    .toString());        } catch (Exception e) {            JOptionPane.showMessageDialog(mainFrame, "请指定用户类型!");            return;        }        // 2组织参数        UserModel user = new UserModel();        user.setName(name);        user.setPwd(pwd);        user.setType(type);        user.setUuid(uuid);        // 3调用逻辑层        UserEbi ebi = UserEbiFactory.getUserEbi();        // 4根据调用返回结果导向不同页面        if (ebi.update(user)) {            back();        } else {            JOptionPane.showMessageDialog(null, "该用户已经不存在!");        }    }    private void btnBackActionPerformed(java.awt.event.ActionEvent evt) {        back();    }    private void back() {        mainFrame.setContentPane(new ListPanel(mainFrame));        mainFrame.validate();    }    // GEN-BEGIN:variables    // Variables declaration - do not modify    private javax.swing.JButton btnBack;    private javax.swing.JButton btnUpdate;    private javax.swing.JComboBox combType;    private javax.swing.JLabel jLabel1;    private javax.swing.JLabel jLabel2;    private javax.swing.JLabel jLabel3;    private javax.swing.JLabel jLabel4;    private javax.swing.JLabel jLabel5;    private javax.swing.JLabel jLabel6;    private javax.swing.JTextField tfdName;    private javax.swing.JPasswordField tfdPwd;    private javax.swing.JPasswordField tfdPwd2;    private javax.swing.JTextField tfdUuid;    // End of variables declaration//GEN-END:variables}

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cn.hncu.bookStore.user.ui;

ListPanel类（调用用户功能模块）

/* * ListPanel.java * * Created on __DATE__, __TIME__ */package cn.hncu.bookStore.user.ui;import java.util.List;import javax.swing.JFrame;import javax.swing.JOptionPane;import cn.hncu.bookStore.user.business.ebi.UserEbi;import cn.hncu.bookStore.user.business.factory.UserEbiFactory;import cn.hncu.bookStore.user.vo.UserModel;/** * 表现层-用户列表面板 *  * @author 陈浩翔 * @version 1.0 */public class ListPanel extends javax.swing.JPanel {    private JFrame mainFrame = null;    /** Creates new form ListPanel */    public ListPanel(JFrame mainFrame) {        this.mainFrame = mainFrame;        initComponents();        myInitData();    }    /**     * 读取所有用户并添加进列表     */    private void myInitData() {        UserEbi user = UserEbiFactory.getUserEbi();        List<UserModel> list = user.getAll();        userLists.setListData(list.toArray());    }    //GEN-BEGIN:initComponents    // <editor-fold defaultstate="collapsed" desc="Generated Code">    private void initComponents() {        jScrollPane1 = new javax.swing.JScrollPane();        userLists = new javax.swing.JList();        jLabel1 = new javax.swing.JLabel();        btnToAdd = new javax.swing.JButton();        btnToDelete = new javax.swing.JButton();        btnToUpdate = new javax.swing.JButton();        setMinimumSize(new java.awt.Dimension(800, 600));        setLayout(null);        userLists.setModel(new javax.swing.AbstractListModel() {            String[] strings = { "" };            public int getSize() {                return strings.length;            }            public Object getElementAt(int i) {                return strings[i];            }        });        jScrollPane1.setViewportView(userLists);        add(jScrollPane1);        jScrollPane1.setBounds(170, 80, 480, 230);        jLabel1.setFont(new java.awt.Font("Tahoma", 1, 48));        jLabel1.setForeground(new java.awt.Color(204, 0, 51));        jLabel1.setText("User List");        add(jLabel1);        jLabel1.setBounds(300, 0, 260, 80);        btnToAdd.setFont(new java.awt.Font("Dialog", 1, 24));        btnToAdd.setForeground(new java.awt.Color(0, 102, 102));        btnToAdd.setText("\u6dfb\u52a0\u7528\u6237");        btnToAdd.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnToAddActionPerformed(evt);            }        });        add(btnToAdd);        btnToAdd.setBounds(160, 350, 150, 50);        btnToDelete.setFont(new java.awt.Font("Dialog", 1, 24));        btnToDelete.setForeground(new java.awt.Color(0, 102, 102));        btnToDelete.setText("\u5220\u9664\u7528\u6237");        btnToDelete.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnToDeleteActionPerformed(evt);            }        });        add(btnToDelete);        btnToDelete.setBounds(510, 350, 150, 50);        btnToUpdate.setFont(new java.awt.Font("Dialog", 1, 24));        btnToUpdate.setForeground(new java.awt.Color(0, 102, 102));        btnToUpdate.setText("\u4fee\u6539\u7528\u6237");        btnToUpdate.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnToUpdateActionPerformed(evt);            }        });        add(btnToUpdate);        btnToUpdate.setBounds(160, 450, 150, 50);    }// </editor-fold>    //GEN-END:initComponents    private void btnToUpdateActionPerformed(java.awt.event.ActionEvent evt) {        UserModel user = (UserModel) userLists.getSelectedValue();        if (user == null) {            JOptionPane.showMessageDialog(mainFrame, "请选择要修改的用户!");            return;        }        String uuid = user.getUuid();        mainFrame.setContentPane(new UpdatePanel(mainFrame, uuid));        mainFrame.validate();    }    private void btnToDeleteActionPerformed(java.awt.event.ActionEvent evt) {        UserModel user = (UserModel) userLists.getSelectedValue();        if (user == null) {            JOptionPane.showMessageDialog(mainFrame, "请选择要删除的用户!");            return;        }        String uuid = user.getUuid();        mainFrame.setContentPane(new DeletePanel(mainFrame, uuid));        mainFrame.validate();    }    private void btnToAddActionPerformed(java.awt.event.ActionEvent evt) {        mainFrame.setContentPane(new AddPanel(mainFrame));        mainFrame.validate();    }    //GEN-BEGIN:variables    // Variables declaration - do not modify    private javax.swing.JButton btnToAdd;    private javax.swing.JButton btnToDelete;    private javax.swing.JButton btnToUpdate;    private javax.swing.JLabel jLabel1;    private javax.swing.JScrollPane jScrollPane1;    private javax.swing.JList userLists;    // End of variables declaration//GEN-END:variables}