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("u6dfbu52a0u7528u6237"); add(jLabel1); jLabel1.setBounds(330, 30, 230, 80); jLabel2.setFont(new java.awt.Font("微软雅黑", 0, 18)); jLabel2.setText("u7528u6237u7c7bu578b:"); 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("u59d3u540d:"); 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("u5bc6u7801:"); add(jLabel5); jLabel5.setBounds(120, 240, 50, 30); jLabel6.setFont(new java.awt.Font("微软雅黑", 0, 18)); jLabel6.setText("u786eu8ba4u5bc6u7801:"); 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("u6dfbu52a0"); 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("u8fd4u56de"); 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 }

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("u5220u9664u7528u6237"); add(jLabel1); jLabel1.setBounds(330, 30, 230, 80); jLabel2.setFont(new java.awt.Font("微软雅黑", 0, 18)); jLabel2.setText("u7528u6237u7c7bu578b:"); 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("u59d3u540d:"); add(jLabel4); jLabel4.setBounds(420, 160, 50, 30); jLabel5.setFont(new java.awt.Font("微软雅黑", 0, 18)); jLabel5.setText("u5bc6u7801:"); 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("u8fd4u56de"); 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("u5220u9664"); 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 }

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("u4feeu6539u7528u6237"); add(jLabel1); jLabel1.setBounds(320, 30, 230, 80); jLabel2.setFont(new java.awt.Font("微软雅黑", 0, 18)); jLabel2.setText("u7528u6237u7c7bu578b:"); 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("u59d3u540d:"); 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("u5bc6u7801:"); add(jLabel5); jLabel5.setBounds(120, 240, 50, 30); jLabel6.setFont(new java.awt.Font("微软雅黑", 0, 18)); jLabel6.setText("u786eu8ba4u5bc6u7801:"); 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("u8fd4u56de"); 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("u4feeu6539"); 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 }

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("u6dfbu52a0u7528u6237"); 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("u5220u9664u7528u6237"); 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("u4feeu6539u7528u6237"); 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 }

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