Java学生信息管理系统实训第五天总结

一个星期都是Java课，一直敲代码，感觉真的是好累好累啊。但是生活正在苦不一样要继续吗？今天接着码代码吧。说实话打了这么多东西，是真的学到了很多的东西。比如写GUI一般的格式有什么，大概改怎么打还是学到了一些。但是让自己独立写的话还是很难独立完成。毕竟懂的东西要更多一些。
今天接着昨天的打吧，开始写添加学生窗口AddStudentFrame

package net.lsl.student.gui;

import jdk.nashorn.internal.scripts.JO;
import net.lsl.student.bean.Student;
import net.lsl.student.service.StudentService;
import net.lsl.student.service.impl.StudentServiceImpl;

import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.List;
import java.util.jar.JarFile;

/**

• 功能：添加学生记录

• 作者：李世兰

• 日期：2019年6月22日10:34:09
  */
  public class AddStudentFrame extends JFrame {
  private JPanel panel;
  private JPanel pnlCenter;
  private JPanel pnlRow1;
  private JPanel pnlRow2;
  private JPanel pnlRow3;
  private JPanel pnlRow4;
  private JPanel pnlRow5;
  private JPanel pnlRow6;
  private JPanel pnlRow7;
  private JPanel pnlSouth;

  private JLabel lblId;
  private JLabel lblName;
  private JLabel lblSex;
  private JLabel lblAge;
  private JLabel lblDepartment;
  private JLabel lblClass;
  private JLabel lblTelephone;

  private JTextField txtId;
  private JTextField txtName;
  private JTextField txtSex;
  private JTextField txtAge;
  private JTextField txtDepartment;
  private JTextField txtClass;
  private JTextField txtTelephone;

  private JButton btnExit;
  private JButton btnOK;
  private JButton btnCancel;

  private int currentRow;

  private List students;

  public AddStudentFrame(String title){
  super(title);
  initGUI();
  }

  private void initGUI() {
  //创建组件
  panel = (JPanel) getContentPane();
  pnlCenter = new JPanel();
  pnlSouth = new JPanel();

   pnlRow1 = new JPanel();
   pnlRow2 = new JPanel();
   pnlRow3 = new JPanel();
   pnlRow4 = new JPanel();
   pnlRow5 = new JPanel();
   pnlRow6 = new JPanel();
   pnlRow7 = new JPanel();
  
   pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow7.setLayout(new FlowLayout(FlowLayout.LEFT));
  
   lblId = new JLabel("学号：");
   lblName = new JLabel("姓名：");
   lblSex = new JLabel("性别：");
   lblAge = new JLabel("年龄：");
   lblDepartment = new JLabel("系部：");
   lblClass = new JLabel("班级：");
   lblTelephone = new JLabel("电话：");
  
   txtId = new JTextField(20);
   txtName = new JTextField(20);
   txtSex = new JTextField(20);
   txtAge = new JTextField(20);
   txtDepartment = new JTextField(20);
   txtClass = new JTextField(20);
   txtTelephone = new JTextField(20);
  
   btnOK = new JButton("确定[O]");
   btnCancel = new JButton("取消[C]");
   btnExit = new JButton("退出[X]");
   btnOK.setMnemonic(KeyEvent.VK_O);
   btnCancel.setMnemonic(KeyEvent.VK_C);
   btnExit.setMnemonic(KeyEvent.VK_X);
  
   panel.setLayout(new BorderLayout());
   panel.add(pnlCenter,BorderLayout.CENTER);
   panel.add(pnlSouth,BorderLayout.SOUTH);
   pnlCenter.setLayout(new GridLayout(7,1));
   pnlCenter.add(pnlRow1);
   pnlCenter.add(pnlRow2);
   pnlCenter.add(pnlRow3);
   pnlCenter.add(pnlRow4);
   pnlCenter.add(pnlRow5);
   pnlCenter.add(pnlRow6);
   pnlCenter.add(pnlRow7);
  
   pnlRow1.add(lblId);
   pnlRow1.add(txtId);
   pnlRow2.add(lblName);
   pnlRow2.add(txtName);
   pnlRow3.add(lblSex);
   pnlRow3.add(txtSex);
   pnlRow4.add(lblAge);
   pnlRow4.add(txtAge);
   pnlRow5.add(lblDepartment);
   pnlRow5.add(txtDepartment);
   pnlRow6.add(lblClass);
   pnlRow6.add(txtClass);
   pnlRow7.add(lblTelephone);
   pnlRow7.add(txtTelephone);
  
   pnlSouth.add(btnOK);
   pnlSouth.add(btnCancel);
   pnlSouth.add(btnExit);
  
   setSize(800,500);
   //setResizable(false);
   pack();
   setLocationRelativeTo(null);
   setTitle("添加学生记录");
   setVisible(true);
   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
   //【确定】按钮单击事件
   btnOK.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           //学号非空校验
           if (txtId.getText().trim().equals("")){
               JOptionPane.showMessageDialog(null,"学号不能为空！","增加学生记录",JOptionPane.WARNING_MESSAGE);
               txtId.requestFocus();
               return;
           }
  
           //年龄数字校验
           if (!isNumber(txtAge.getText().trim())){
               JOptionPane.showMessageDialog(null,"注意：年龄全由数字构成！","添加学生记录",JOptionPane.WARNING_MESSAGE);
               txtAge.setText("");
               txtAge.requestFocus();
               return;
           }
  
           //创建学生实体
           Student student = new Student();
           //设置学生实体属性
           student.setId(txtId.getText().trim());
           student.setName(txtName.getText().trim());
           student.setSex(txtSex.getText().trim());
           student.setAge(Integer.parseInt(txtAge.getText()));
           student.setDepartment(txtDepartment.getText().trim());
           student.setClazz(txtClass.getText().trim());
           student.setTelephone(txtTelephone.getText().trim());
  
           //创建学生服务对象
           StudentService studentService = new StudentServiceImpl();
           //添加学生记录
           int count = studentService.addStudent(student);
           //判断是否添加成功
           if (count > 0){
               JOptionPane.showMessageDialog(null,"添加记录成功！","添加学生记录",JOptionPane.WARNING_MESSAGE);
               txtId.setText("");
               txtName.setText("");
               txtSex.setText("");
               txtAge.setText("");
               txtDepartment.setText("");
               txtClass.setText("");
               txtTelephone.setText("");
               txtId.requestFocus();
           }else{
               JOptionPane.showMessageDialog(null,"添加记录失败！","增加学生信息",JOptionPane.WARNING_MESSAGE);
           }
       }
   });
  
   //【取消】按钮单击事件处理
   btnCancel.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           txtId.setText("");
           txtName.setText("");
           txtSex.setText("");
           txtAge.setText("");
           txtDepartment.setText("");
           txtClass.setText("");
           txtTelephone.setText("");
       }
   });
   //【退出】按钮单击事件处理
   btnExit.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           dispose();
       }
   });
  
   //【学号】文本框按钮事件处理
   txtId.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               if (txtId.getText().trim().equals("")){
                   txtName.requestFocus();
               }
           }
       }
   });
  
   //【姓名】文本框按钮事件处理
   txtName.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtSex.requestFocus();
           }
       }
   });
  
   //【性别】文本框按钮事件处理
   txtSex.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtAge.requestFocus();
           }
       }
   });
  
   //【年龄】文本框按键事件处理
   txtAge.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtDepartment.requestFocus();
           }
       }
   });
   //【系部】文本框按钮事件处理
   txtDepartment.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtClass.requestFocus();
           }
       }
   });
   //【班级】文本框按钮事件处理
   txtClass.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtTelephone.requestFocus();
           }
       }
   });
  

  }

  boolean isNumber(String str) {
  for (int i = 0; i < str.length();i++){
  if (str.charAt(i) < ‘0’ || str.charAt(i) > ‘9’){
  return false;
  }
  }
  return true;
  }

  public static void main(String[] args) {
  new AddStudentFrame("");
  }
  }

写完了这个以后，接着就写了编辑学生窗口EditStudentFrame
package net.lsl.student.gui;

import net.lsl.student.bean.Student;
import net.lsl.student.service.StudentService;
import net.lsl.student.service.impl.StudentServiceImpl;

import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**

• 功能：编辑学生记录

• 作者：李世兰

• 日期：2019年6月22日13:01:22
  */
  public class EditStudentFrame extends JFrame{
  private JPanel panel;
  private JPanel pnlCenter;
  private JPanel pnlRow1;
  private JPanel pnlRow2;
  private JPanel pnlRow3;
  private JPanel pnlRow4;
  private JPanel pnlRow5;
  private JPanel pnlRow6;
  private JPanel pnlRow7;
  private JPanel pnlSouth;
  private JPanel pnlSouth1;
  private JPanel pnlSouth2;

  private JLabel lblId;
  private JLabel lblName;
  private JLabel lblSex;
  private JLabel lblAge;
  private JLabel lblDepartment;
  private JLabel lblClass;
  private JLabel lblTelephone;

  private JTextField txtId;
  private JTextField txtName;
  private JTextField txtSex;
  private JTextField txtAge;
  private JTextField txtDepartment;
  private JTextField txtClass;
  private JTextField txtTelephone;

  private JButton btnTop;
  private JButton btnPrevious;
  private JButton btnNext;
  private JButton btnBottom;
  private JButton btnExit;
  private JButton btnEdit;
  private JButton btnOK;
  private JButton btnCancel;

  private int currentRow;

  private List students;

  StudentService studentService;

  public EditStudentFrame(String title){
  super(title);
  initGUI();
  }

  private void initGUI() {
  panel = (JPanel) getContentPane();
  pnlCenter = new JPanel();
  pnlSouth = new JPanel();
  pnlSouth.setLayout(new GridLayout(2, 1));

   pnlRow1 = new JPanel();
   pnlRow2 = new JPanel();
   pnlRow3 = new JPanel();
   pnlRow4 = new JPanel();
   pnlRow5 = new JPanel();
   pnlRow6 = new JPanel();
   pnlRow7 = new JPanel();
   pnlSouth1 = new JPanel();
   pnlSouth2 = new JPanel();
  
   pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
   pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
  
   lblId = new JLabel("学号：");
   lblName = new JLabel("姓名：");
   lblSex = new JLabel("性别：");
   lblAge = new JLabel("年龄：");
   lblDepartment = new JLabel("系部：");
   lblClass = new JLabel("班级：");
   lblTelephone = new JLabel("电话：");
  
   txtId = new JTextField(40);
   txtName = new JTextField(40);
   txtSex = new JTextField(40);
   txtAge = new JTextField(40);
   txtDepartment = new JTextField(40);
   txtClass = new JTextField(40);
   txtTelephone = new JTextField(40);
  
   txtId.setEditable(false);
   txtName.setEditable(false);
   txtSex.setEditable(false);
   txtAge.setEditable(false);
   txtDepartment.setEditable(false);
   txtClass.setEditable(false);
   txtTelephone.setEditable(false);
  
   btnTop = new JButton("第一条[T]");
   btnPrevious = new JButton("上一条[P]");
   btnNext = new JButton("下一条[N]");
   btnBottom = new JButton("最后一条[B]");
   btnExit = new JButton("退出[X]");
   btnEdit = new JButton("编辑[E]");
   btnOK = new JButton("确定[O]");
   btnCancel = new JButton("取消[C]");
   btnOK.setEnabled(false);
   btnCancel.setEnabled(false);
   btnTop.setMnemonic(KeyEvent.VK_T);
   btnPrevious.setMnemonic(KeyEvent.VK_P);
   btnNext.setMnemonic(KeyEvent.VK_N);
   btnBottom.setMnemonic(KeyEvent.VK_B);
   btnExit.setMnemonic(KeyEvent.VK_X);
   btnEdit.setMnemonic(KeyEvent.VK_E);
   btnOK.setMnemonic(KeyEvent.VK_O);
   btnCancel.setMnemonic(KeyEvent.VK_C);
  
   panel.setLayout(new BorderLayout());
   panel.add(pnlCenter, BorderLayout.CENTER);
   panel.add(pnlSouth, BorderLayout.SOUTH);
   pnlCenter.setLayout(new GridLayout(7,1));
  
   pnlCenter.add(pnlRow1);
   pnlCenter.add(pnlRow2);
   pnlCenter.add(pnlRow3);
   pnlCenter.add(pnlRow4);
   pnlCenter.add(pnlRow5);
   pnlCenter.add(pnlRow6);
   pnlCenter.add(pnlRow7);
  
   pnlRow1.add(lblId);
   pnlRow1.add(txtId);
   pnlRow2.add(lblName);
   pnlRow2.add(txtName);
   pnlRow3.add(lblSex);
   pnlRow3.add(txtSex);
   pnlRow4.add(lblAge);
   pnlRow4.add(txtAge);
   pnlRow5.add(lblDepartment);
   pnlRow5.add(txtDepartment);
   pnlRow6.add(lblClass);
   pnlRow6.add(txtClass);
   pnlRow7.add(lblTelephone);
   pnlRow7.add(txtTelephone);
  
   pnlSouth.add(pnlSouth1);
   pnlSouth.add(pnlSouth2);
   pnlSouth1.add(btnTop);
   pnlSouth1.add(btnPrevious);
   pnlSouth1.add(btnNext);
   pnlSouth1.add(btnBottom);
   pnlSouth1.add(btnExit);
   pnlSouth2.add(btnEdit);
   pnlSouth2.add(btnOK);
   pnlSouth2.add(btnCancel);
  
  
   setSize(500, 300);
   setResizable(false);
   pack();
   setLocationRelativeTo(null);
   setVisible(true);
   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
   studentService = new StudentServiceImpl();
   students = studentService.findAllStudents();
  
   if (students.size() > 0) {
       currentRow = 1;
       setTitle("浏览学生表记录" + "&& 当前记录：" + currentRow);
       fillFrameDate(currentRow);
   } else {
       JOptionPane.showMessageDialog(null, "表中没有记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
       btnTop.setEnabled(false);
       btnPrevious.setEnabled(false);
       btnNext.setEnabled(false);
       btnBottom.setEnabled(false);
   }
  
   btnTop.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           currentRow = 1;
           fillFrameDate(currentRow);
       }
   });
  
   btnPrevious.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           if (currentRow > 1) {
               currentRow--;
               fillFrameDate(currentRow);
           } else {
               JOptionPane.showMessageDialog(null, "已到第一条记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
           }
       }
   });
  
   btnNext.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           if (currentRow < students.size() - 1){
               currentRow++;
               fillFrameDate(currentRow);
           }else{
               JOptionPane.showMessageDialog(null,"已到最后一条记录","浏览学生表记录",JOptionPane.WARNING_MESSAGE);
           }
       }
   });
  
   btnBottom.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           currentRow = students.size() - 1;
           fillFrameDate(currentRow);
       }
   });
  
   btnExit.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           dispose();
       }
   });
  
   btnEdit.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           setTitle("编辑学生表记录" + "&& 当前记录：" + currentRow);
  
           txtName.setEditable(true);
           txtSex.setEditable(true);
           txtAge.setEditable(true);
           txtDepartment.setEditable(true);
           txtClass.setEditable(true);
           txtTelephone.setEditable(true);
           btnOK.setEnabled(true);
           btnCancel.setEnabled(true);
       }
   });
  
  
   btnOK.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           Student student = students.get(currentRow);
           if (isNumber(txtAge.getText())){
               if (isLegalTelephone(txtTelephone.getText())){
                   student.setName(txtName.getText());
                   student.setId(txtId.getText());
                   student.setSex(txtSex.getText());
                   student.setAge(Integer.parseInt(txtAge.getText()));
                   student.setDepartment(txtDepartment.getText());
                   student.setClazz(txtClass.getText());
                   student.setTelephone(txtTelephone.getText());
  
                   int count = studentService.updateStudent(student);
  
                   if (count > 0){
                       JOptionPane.showMessageDialog(null,"更新记录成功！","编辑学生记录",JOptionPane.WARNING_MESSAGE);
                       btnOK.setEnabled(false);
                       btnCancel.setEnabled(false);
                       btnEdit.setEnabled(true);
                       txtName.setEditable(false);
                       txtSex.setEditable(false);
                       txtAge.setEditable(false);
                       txtDepartment.setEditable(false);
                       txtClass.setEditable(false);
                       txtTelephone.setEditable(false);
  
                       students = studentService.findAllStudents();
                       setTitle("浏览学生表记录" + "&& 当前记录：" + currentRow);
                   }else{
                       JOptionPane.showMessageDialog(null,"更新记录失败！","编辑学生记录",JOptionPane.WARNING_MESSAGE);
                   }
               }else{
                   JOptionPane.showMessageDialog(null,"非法手机号！","编辑学生记录",JOptionPane.WARNING_MESSAGE);
                   txtTelephone.selectAll();
                   txtTelephone.requestFocus();
               }
           }else{
               JOptionPane.showMessageDialog(null,"年龄必须是数字！","编辑学生记录",JOptionPane.WARNING_MESSAGE);
               txtAge.selectAll();
               txtAge.requestFocus();
           }
       }
   });
  
   btnCancel.addActionListener(new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           btnOK.setEnabled(false);
           btnCancel.setEnabled(false);
           btnEdit.setEnabled(false);
           txtName.setEditable(false);
           txtSex.setEditable(false);
           txtAge.setEditable(false);
           txtDepartment.setEditable(false);
           txtClass.setEditable(false);
           txtTelephone.setEditable(false);
  
           txtName.setText(students.get(currentRow).getName());
           txtSex.setText(students.get(currentRow).getSex());
           txtAge.setText(students.get(currentRow).getAge() + "");
           txtDepartment.setText(students.get(currentRow).getClazz());
           txtClass.setText(students.get(currentRow).getClazz());
           txtTelephone.setText(students.get(currentRow).getTelephone());
       }
   });
  
   //【学号】文本框按钮事件
   txtId.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtName.requestFocus();
           }
       }
   });
   //【姓名】文本框按钮事件
   txtName.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtSex.requestFocus();
           }
       }
   });
  
   //【性别】文本框按钮事件
   txtSex.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtAge.requestFocus();
           }
       }
   });
   //【年龄】文本框按钮事件
   txtAge.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtDepartment.requestFocus();
           }
       }
   });
  
   //【系部【文本框按钮事件
   txtDepartment.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER) {
               txtClass.requestFocus();
           }
       }
   });
  
   //【班级】文本框按钮事件
   txtClass.addKeyListener(new KeyAdapter() {
       @Override
       public void keyPressed(KeyEvent e) {
           if (e.getKeyCode() == KeyEvent.VK_ENTER){
               txtTelephone.requestFocus();
           }
       }
   });
  

  }
  private void fillFrameDate(int currentRow){
  if (currentRow > 0){
  setTitle(“浏览学生表记录” + “&& 当前记录：” + currentRow);
  txtId.setText(students.get(currentRow).getId());
  txtName.setText(students.get(currentRow).getName());
  txtSex.setText(students.get(currentRow).getSex());
  txtAge.setText(students.get(currentRow).getAge() + “”);
  txtDepartment.setText(students.get(currentRow).getDepartment());
  txtClass.setText(students.get(currentRow).getClazz());
  txtTelephone.setText(students.get(currentRow).getTelephone());
  }
  }
  //判断一个字符串是否全是数字
  private boolean isNumber(String str) {
  for (int i = 0; i < str.length();i++){
  if (str.charAt(i) < ‘0’ || str.charAt(i) > ‘9’) {
  return false;
  }
  }
  return true;
  }

  private boolean isLegalTelephone(String telephone){
  Pattern p = Pattern.compile("^{((13[0-9])|(15[}4,\D])|(18[0-9]))\d{8}$");
  Matcher m = p.matcher(telephone);
  return m.matches();
  }

  public static void main(String[] args) {
  new EditStudentFrame("");
  }

}

3、按学号删除学生窗口DeleteStudentByIdFrame
package net.lsl.student.gui;

import net.lsl.student.bean.Student;
import net.lsl.student.service.StudentService;
import net.lsl.student.service.impl.StudentServiceImpl;

import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.util.Vector;
import java.util.List;

public class DeleteStudentByIdFrame extends JFrame {
/**
* 学号标签
/
private JLabel lblInputId;
/*
* 学号文本框
/
private JTextField txtId;
/*
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;

    /**
     * 按钮
     */
    private JButton btnQuery;
    private JButton btnBrowseAll;
    private JButton btnDelete;
    private JButton btnExit;
    /**
     * 记录行集
     */
    private Vector rows;
    /**
     * 表格列标题
     */
    private Vector colHead;
    /**
     * 表格
     */
    private JTable table;
    /**
     * 滚动面板
     */
    private JScrollPane scroller;
    /**
     * 当前记录行号
     */
    private int currentRow;
    /**
     * 学生列表
     */
    private List students;
    /**
     * 创建学生服务对象
     */
    private StudentService studentService;

    /**
     * 构造方法
     *
     * @param title
     */
    public DeleteStudentByIdFrame(String title) {
        super(title);
        intiGUI();
    }

    private void intiGUI() {
        // 创建组件
        panel = (JPanel) getContentPane();
        pnlNorth = new JPanel();
        pnlCenter = new JPanel();
        pnlSouth = new JPanel();

        rows = new Vector();
        colHead = new Vector();

        lblInputId = new JLabel("输入学号：");
        txtId = new JTextField(10);
        txtId.setHorizontalAlignment(JTextField.CENTER);
        btnQuery = new JButton("查询[Q]");
        btnQuery.setMnemonic(KeyEvent.VK_Q);
        btnBrowseAll = new JButton("显示全部记录[A]");
        btnBrowseAll.setMnemonic(KeyEvent.VK_A);
        btnDelete = new JButton("删除查询的记录[D]");
        btnDelete.setEnabled(false);// 删除按钮不可用
        btnDelete.setMnemonic(KeyEvent.VK_D);
        btnExit = new JButton("退出[X]");
        btnExit.setMnemonic(KeyEvent.VK_X);

        // 添加组件
        panel.add(pnlSouth, BorderLayout.SOUTH);
        panel.add(pnlCenter, BorderLayout.CENTER);
        panel.add(pnlNorth, BorderLayout.NORTH);

        pnlNorth.add(lblInputId);
        pnlNorth.add(txtId);
        pnlNorth.add(btnQuery);
        pnlNorth.add(btnBrowseAll);
        pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
        pnlSouth.add(btnDelete);
        pnlSouth.add(btnExit);
        pnlCenter.setLayout(new BorderLayout());

        // 创建标题边框对象
        TitledBorder tb = new TitledBorder("查询结果");
        pnlCenter.setBorder(tb);

        // 创建学生服务对象
        studentService = new StudentServiceImpl();
        // 获取全部学生列表
        students = studentService.findAllStudents();
        // 填充表格数据
        fillTableData();

        // 设置窗口大小
        setSize(600, 350);
        // 设置窗口不可调整大小
        setResizable(false);
        // 设置窗口屏幕居中
        setLocationRelativeTo(null);
        // 设置窗口标题
        setTitle("按学号删除学生记录");
        // 设置窗口可见
        setVisible(true);
        // 设置窗口默认关闭操作
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // 【退出】按钮单击事件
        btnExit.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent event) {
                dispose();
            }
        });

        // 【删除】按钮单击事件
        btnDelete.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (!rows.isEmpty()) {
                    long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
                    if (choice == JOptionPane.OK_OPTION) {
                        // 获取待删学生学号
                        String id = txtId.getText().trim();
                        // 按学号删除学生
                        int count = studentService.deleteStudentById(id);
                        if (count > 0) {
                            JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
                            // 重新获取全部学生列表
                            students = studentService.findAllStudents();
                            // 清空待删学生学号文本框
                            txtId.setText("");
                            // 填充数据
                            fillTableData();
                            // 删除按钮不可用
                            btnDelete.setEnabled(false);
                        } else {
                            JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
                        }
                    }
                }
            }
        });

        // 【查询】按钮单击事件
        btnQuery.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent event) {
                doQuery();
            }
        });

        // 【显示全部记录】按钮单击事件
        btnBrowseAll.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent event) {
                // 获取全部学生记录
                students = studentService.findAllStudents();
                // 填充表格数据
                fillTableData();
                // 删除按钮不可用
                btnDelete.setEnabled(false);
            }
        });

        // 【学号】文本框按键事件
        txtId.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                    doQuery();
                }
            }
        });

        // 表格单击事件
        table.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                // 获取当前行的行数
                int row = table.rowAtPoint(e.getPoint());
                // 选中鼠标单击的行
                table.setRowSelectionInterval(row, row);
                // 设置文本框内容
                txtId.setText(table.getValueAt(row, 0).toString());
            }
        });
    }

    /**
     * 查询方法
     */
    private void doQuery() {
        // 获取查询学号
        String id = txtId.getText().trim();
        if (!id.equals("")) {
            students.clear();
            Student student = studentService.findStudentById(id);
            if (student != null) {
                // 将查询到的学生添加到列表
                students.add(student);
                // 让删除按钮可用
                btnDelete.setEnabled(true);
            }
            // 填充表格
            fillTableData();
        } else {
            JOptionPane.showMessageDialog(this, "请输入待查学生学号！", "警告", JOptionPane.WARNING_MESSAGE);
            txtId.requestFocus();
        }
    }

    /**
     * 填充表格方法
     */
    private void fillTableData() {
        // 填充表头
        colHead.clear();
        colHead.add("学号");
        colHead.add("姓名");
        colHead.add("性别");
        colHead.add("年龄");
        colHead.add("系部");
        colHead.add("班级");
        colHead.add("电话");

        // 填充表记录
        rows.clear();
        for (Student student : students) {
            Vector currentRow = new Vector();
            currentRow.addElement(student.getId());
            currentRow.addElement(student.getName());
            currentRow.addElement(student.getSex());
            currentRow.addElement(student.getAge() + "");
            currentRow.addElement(student.getDepartment());
            currentRow.addElement(student.getClazz());
            currentRow.addElement(student.getTelephone());
            // 将当前行添加到记录行集
            rows.add(currentRow);
        }

        // 创建表格（参数1：记录集；参数2：表头）
        table = new JTable(rows, colHead);

        // 定义滚动面板
        scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        // 将滚动面板添加到中心面板
        pnlCenter.add(scroller, BorderLayout.CENTER);

        // 重绘窗体
        repaint();

        // 判断是否有记录行
        if (rows.isEmpty()) {
            JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
            txtId.setText("");
        } else {
            // 让滚动条移到最上方
            scroller.getVerticalScrollBar().setValue(0);
        }
    }

    /**
     * 主方法
     *
     * @param args
     */


public static void main(String[] args) {
    new DeleteStudentByIdFrame("");
}

}

写完了这个GUI以后，我突然觉得里面的内容至少有一般以上是相同或者相类似的，其实自己可以不用那么累，可以复制粘贴，但是又想到复制粘贴对自己有什么用呢，自己一样学不到然后东西。于是又接着一个一个 的开始码代码。

这三个删除类其实差不多，只是有一些地方有一些不一样而已。写完了这三个删除类的界面，接着就写查询窗口

查询有四种方法，按学号查询，按姓名查询，按班级查询，按系部查询。
四种查询方法都是差不多的，代码也就差不多。
按学号查询学生窗口FindStudentById
package net.lsl.student.gui;

import net.lsl.student.bean.Student;
import net.lsl.student.service.StudentService;
import net.lsl.student.service.impl.StudentServiceImpl;

import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.Vector;
import java.util.List;

public class FindStudentByIdFrame extends JFrame {

/**
 * 学号标签
 */
private JLabel lblInputId;
/**
 * 学号文本框
 */
private JTextField txtId;
/**
 * 面板
 */
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
 * 按钮
 */
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
 * 记录行集
 */
private Vector rows;
/**
 * 表格列标题
 */
private Vector colHead;
/**
 * 表格
 */
private JTable table;
/**
 * 滚动面板
 */
private JScrollPane scroller;
/**
 * 当前记录行号
 */
private int currentRow;
/**
 * 学生列表
 */
private List students;
/**
 * 创建学生服务对象
 */
private StudentService studentService;

/**
 * 构造方法
 *
 * @param title
 */
public FindStudentByIdFrame(String title) {
    super(title);
    intiGUI();
}

/**
 * 初始化用户界面
 */
private void intiGUI() {
    // 创建组件
    panel = (JPanel) getContentPane();
    pnlNorth = new JPanel();
    pnlCenter = new JPanel();
    pnlSouth = new JPanel();

    rows = new Vector();
    colHead = new Vector();

    lblInputId = new JLabel("输入学号：");
    txtId = new JTextField(10);
    txtId.setHorizontalAlignment(JTextField.CENTER);
    btnQuery = new JButton("查询[Q]");
    btnQuery.setMnemonic(KeyEvent.VK_Q);
    btnBrowseAll = new JButton("显示全部记录[A]");
    btnBrowseAll.setMnemonic(KeyEvent.VK_A);
    btnPrint = new JButton("打印[P]");
    btnPrint.setMnemonic(KeyEvent.VK_D);
    btnExit = new JButton("退出[X]");
    btnExit.setMnemonic(KeyEvent.VK_X);

    // 添加组件
    panel.add(pnlSouth, BorderLayout.SOUTH);
    panel.add(pnlCenter, BorderLayout.CENTER);
    panel.add(pnlNorth, BorderLayout.NORTH);

    pnlNorth.add(lblInputId);
    pnlNorth.add(txtId);
    pnlNorth.add(btnQuery);
    pnlNorth.add(btnBrowseAll);
    pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
    pnlSouth.add(btnPrint);
    pnlSouth.add(btnExit);
    pnlCenter.setLayout(new BorderLayout());

    // 创建标题边框对象
    TitledBorder tb = new TitledBorder("查询结果");
    pnlCenter.setBorder(tb);

    // 创建学生服务对象
    studentService = new StudentServiceImpl();
    // 获取全部学生列表
    students = studentService.findAllStudents();
    // 填充表格数据
    fillTableData();

    // 设置窗口大小
    setSize(600, 350);
    // 设置窗口不可调整大小
    setResizable(false);
    // 设置窗口屏幕居中
    setLocationRelativeTo(null);
    // 设置窗口标题
    setTitle("按学号查询学生记录");
    // 设置窗口可见
    setVisible(true);
    // 设置窗口默认关闭操作
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


    // 【退出】按钮单击事件
    btnExit.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent event) {
            dispose();
        }
    });

    // 【打印】按钮单击事件
    btnPrint.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            try {
                table.print();
            } catch (PrinterException e1) {
                e1.printStackTrace();
            }
        }
    });

    // 【查询】按钮单击事件
    btnQuery.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent event) {
            doQuery();
        }
    });

    // 【显示全部记录】按钮单击事件
    btnBrowseAll.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent event) {
            // 获取全部学生记录
            students = studentService.findAllStudents();
            // 填充表格数据
            fillTableData();
            // 删除按钮不可用
            btnPrint.setEnabled(false);
        }
    });

    // 【学号】文本框按键事件
    txtId.addKeyListener(new KeyAdapter() {
        @Override
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                doQuery();
            }
        }
    });

    // 表格单击事件
    table.addMouseListener(new MouseAdapter() {
        public void mouseClicked(MouseEvent e) {
            // 获取当前行的行数
            int row = table.rowAtPoint(e.getPoint());
            // 选中鼠标单击的行
            table.setRowSelectionInterval(row, row);
            // 设置文本框内容
            txtId.setText(table.getValueAt(row, 0).toString());
        }
    });
}

/**
 * 查询方法
 */
private void doQuery() {
    // 获取查询学号
    String id = txtId.getText().trim();
    if (!id.equals("")) {
        students.clear();
        Student student = studentService.findStudentById(id);
        if (student != null) {
            // 将查询到的学生添加到列表
            students.add(student);
        }
        // 填充表格
        fillTableData();
    } else {
        JOptionPane.showMessageDialog(this, "请输入待查学生学号！", "警告", JOptionPane.WARNING_MESSAGE);
        txtId.requestFocus();
    }
}

/**
 * 填充表格方法
 */
private void fillTableData() {
    // 填充表头
    colHead.clear();
    colHead.add("学号");
    colHead.add("姓名");
    colHead.add("性别");
    colHead.add("年龄");
    colHead.add("系部");
    colHead.add("班级");
    colHead.add("电话");

    // 填充表记录
    rows.clear();
    for (Student student : students) {
        Vector currentRow = new Vector();
        currentRow.addElement(student.getId());
        currentRow.addElement(student.getName());
        currentRow.addElement(student.getSex());
        currentRow.addElement(student.getAge() + "");
        currentRow.addElement(student.getDepartment());
        currentRow.addElement(student.getClazz());
        currentRow.addElement(student.getTelephone());
        // 将当前行添加到记录行集
        rows.add(currentRow);
    }

    // 创建表格（参数1：记录集；参数2：表头）
    table = new JTable(rows, colHead);

    // 定义滚动面板
    scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    // 将滚动面板添加到中心面板
    pnlCenter.add(scroller, BorderLayout.CENTER);

    // 重绘窗体
    repaint();

    // 判断是否有记录行
    if (rows.isEmpty()) {
        JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
        txtId.setText("");
    } else {
        // 让滚动条移到最上方
        scroller.getVerticalScrollBar().setValue(0);
    }
}

/**
 * 主方法
 *
 * @param args
 */
public static void main(String[] args) {
    new FindStudentByIdFrame("");
}

}

其他查询也是和这个相类似的所有就不写在博客上面了。看了一下老师的代码发现好像剩下的不是很多了，而且自己今天也差不多接近下课了，就觉得不写了。正好晚上也还有事情就歇一下明天写吧。