Java GUI 实战练习 学生成绩管理系统

学习java有一年多了，一直在做web方面的练习，在一个项目中发现需要用到GUI的相关知识，结果没法做出来，网上这方面的文章又不是很多，所有只好自己硬着头皮从头再学一遍了，不过学习后发现，其实GUI是非常有趣的，他并不像WEB程序一样依赖互联网，而且还有许多布局和android相差不是很大，这才发现自己竟又爱上GUI的开发了，不多说了，直接上代码吧，相信有过android或相关界面开发的都明白这其中的道理

先看看效果吧

 

 

1.登录主界面

package edu.gzu.stuManager;import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import java.awt.Toolkit;import javax.swing.JTextField;import edu.gzu.stuManager.Dao.UserLoginValid;import edu.gzu.stuManager.Domain.StudentInfo;import edu.gzu.stuManager.View.StudentMainView;import java.awt.Choice;import java.awt.Font;import java.awt.Button;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;public class MainUI {private JFrame frame;private JTextField textField;private JTextField textField_1;/** * Launch the application. */public static void main(String[] args) {EventQueue.invokeLater(new Runnable() {public void run() {try {MainUI window = new MainUI();window.frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}/** * Create the application. */public MainUI() {initialize();}/** * Initialize the contents of the frame. */private void initialize() {frame = new JFrame();frame.setTitle("\u6210\u7EE9\u7BA1\u7406\u7CFB\u7EDF\uFF08\u767B\u5F55\uFF09");frame.setIconImage(Toolkit.getDefaultToolkit().getImage(MainUI.class.getResource("/image/func_list7_privmana.png")));frame.setBounds(400, 250, 450, 300);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.getContentPane().setLayout(null);JLabel lblNewLabel = new JLabel("\u5B66\u751F\u6210\u7EE9\u7BA1\u7406\u7CFB\u7EDF\u7528\u6237\u767B\u5F55\uFF01");lblNewLabel.setFont(new Font("宋体", Font.PLAIN, 16));lblNewLabel.setBounds(111, 17, 287, 15);frame.getContentPane().add(lblNewLabel);JLabel lblNewLabel_1 = new JLabel("\u7528\u6237\u540D\uFF1A");lblNewLabel_1.setFont(new Font("宋体", Font.PLAIN, 14));lblNewLabel_1.setBounds(87, 67, 67, 15);frame.getContentPane().add(lblNewLabel_1);textField = new JTextField();textField.setBounds(154, 64, 141, 21);frame.getContentPane().add(textField);textField.setColumns(10);JLabel label = new JLabel("\u5BC6  \u7801\uFF1A");label.setFont(new Font("宋体", Font.PLAIN, 14));label.setBounds(87, 108, 67, 15);frame.getContentPane().add(label);textField_1 = new JTextField();textField_1.setColumns(10);textField_1.setBounds(154, 103, 141, 21);frame.getContentPane().add(textField_1);JLabel lblNewLabel_2 = new JLabel("\u6211\u7684\u8EAB\u4EFD\u662F\uFF1A");lblNewLabel_2.setFont(new Font("宋体", Font.PLAIN, 14));lblNewLabel_2.setBounds(105, 150, 97, 15);frame.getContentPane().add(lblNewLabel_2);final Choice choice = new Choice();choice.setBounds(210, 147, 74, 21);choice.add("学生");choice.add("教师");choice.add("系统管理员");frame.getContentPane().add(choice);Button button = new Button("\u767B\u5F55");button.setBounds(87, 194, 76, 23);button.addMouseListener(new MouseAdapter() {@Overridepublic void mouseClicked(MouseEvent e) {String user=textField.getText();String password=textField_1.getText();String shenfen=choice.getSelectedItem();if(user.equals("")||user==null){JOptionPane.showMessageDialog(frame, shenfen+":您好，帐号不能为空！");return;}else if(password.equals("")||password==null){JOptionPane.showMessageDialog(frame, shenfen+":您好，密码不能为空！");return;}else{StudentInfo stu=new StudentInfo(Integer.parseInt(user),Integer.parseInt(password),shenfen);UserLoginValid dao=new UserLoginValid();String result=dao.isValid(stu);if("登录成功！".equals(result)){JOptionPane.showMessageDialog(frame,result);StudentMainView index=new StudentMainView(stu);JFrame frame2=index.getFrame();frame2.setVisible(true);frame.dispose();}else{JOptionPane.showMessageDialog(frame,result);}}}});frame.getContentPane().add(button);Button button_1 = new Button("\u53D6\u6D88");button_1.setBounds(219, 194, 76, 23);frame.getContentPane().add(button_1);}}

2.登录验证逻辑

package edu.gzu.stuManager.Dao;import edu.gzu.stuManager.Domain.StudentInfo;public class UserLoginValid {public String isValid(StudentInfo stu){int idnum=stu.getIdnum();int password=stu.getPassword();String idntify=stu.getIdentify();String result=null;if("学生".equals(idntify)){if(idnum==1207010209&&password==123){stu.setName("刘明胜 同学");result="登录成功！";}else{result="学生帐号中不存在此用户，请确认身份后再次登录！";}}else if("教师".equals(idntify)){if(idnum==1174386356&&password==123){stu.setName("刘明胜 老师");result="登录成功！";}else{result="教师帐号中不存在此用户，请确认身份后再次登录！";}}else if("系统管理员".equals(idntify)){if(idnum==999999&&password==123){stu.setName("系统管理员");result="登录成功！";}else{result="系统管理员帐号中不存在此用户，请确认身份后再次登录！";}}return result;}}

3.用户对象（这是一个简单bean）

package edu.gzu.stuManager.Domain;public class StudentInfo {private int idnum;private String name;private int password;private String identify;public StudentInfo(int idnum,int password, String identify) {super();this.idnum = idnum;this.password = password;this.identify = identify;}public int getIdnum() {return idnum;}public void setIdnum(int idnum) {this.idnum = idnum;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getPassword() {return password;}public void setPassword(int password) {this.password = password;}public String getIdentify() {return identify;}public void setIdentify(String identify) {this.identify = identify;}}

4.登录成功后的主界面

package edu.gzu.stuManager.View;import java.awt.Button;import java.awt.Canvas;import java.awt.Choice;import java.awt.Color;import java.awt.Toolkit;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JTextField;import edu.gzu.stuManager.Domain.StudentInfo;public class StudentMainView{private JFrame frame;private JTextField textField;private JTextField textField_1;private JTextField textField_2;private JTextField textField_3;private StudentInfo info;/** * Create the frame. * @wbp.parser.entryPoint */public StudentMainView(StudentInfo info) {this.info=info;}public JFrame getFrame(){initialize();return frame;}/** * Initialize the contents of the frame. * @wbp.parser.entryPoint */public void initialize() {frame = new JFrame();frame.setTitle("\u6210\u7EE9\u7BA1\u7406\u7CFB\u7EDF\uFF08\u5B66\u751F\u7248\uFF09");frame.setIconImage(Toolkit.getDefaultToolkit().getImage(StudentMainView.class.getResource("/image/func_list7_privmana.png")));frame.setBounds(300,150, 550, 300);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.getContentPane().setLayout(null);JLabel lblNewLabel = new JLabel("欢迎【"+info.getName()+"】登录学生成绩管理系统！");lblNewLabel.setBounds(54, 10, 322, 15);frame.getContentPane().add(lblNewLabel);JPanel panel = new JPanel();panel.setBounds(29, 52, 250, 180);frame.getContentPane().add(panel);panel.setLayout(null);JLabel lblNewLabel_1 = new JLabel("\u6210\u7EE9\u6570\u636E");lblNewLabel_1.setBounds(94, 10, 65, 15);panel.add(lblNewLabel_1);JLabel lblNewLabel_2 = new JLabel("\u5B66\u53F7\uFF1A");lblNewLabel_2.setBounds(22, 37, 40, 15);panel.add(lblNewLabel_2);textField = new JTextField();textField.setBounds(72, 35, 154, 21);textField.setText(info.getIdnum()+"");panel.add(textField);textField.setColumns(10);JLabel lblNewLabel_3 = new JLabel("\u59D3\u540D\uFF1A");lblNewLabel_3.setBounds(22, 67, 44, 15);panel.add(lblNewLabel_3);textField_1 = new JTextField();textField_1.setBounds(72, 66, 154, 21);textField_1.setText(info.getName());panel.add(textField_1);textField_1.setColumns(10);Canvas canvas = new Canvas();canvas.setBackground(Color.BLUE);canvas.setBounds(22, 100, 205, 1);panel.add(canvas);JLabel lblNewLabel_4 = new JLabel("\u8BFE\u7A0B\u540D");lblNewLabel_4.setBounds(22, 116, 47, 15);panel.add(lblNewLabel_4);JLabel lblNewLabel_5 = new JLabel("\u6210\u7EE9");lblNewLabel_5.setBounds(160, 116, 43, 15);panel.add(lblNewLabel_5);textField_2 = new JTextField();textField_2.setBounds(22, 140, 123, 21);panel.add(textField_2);textField_2.setColumns(10);textField_3 = new JTextField();textField_3.setBounds(159, 140, 66, 21);panel.add(textField_3);textField_3.setColumns(10);JPanel panel_1 = new JPanel();panel_1.setBounds(317, 52, 110, 180);frame.getContentPane().add(panel_1);panel_1.setLayout(null);JLabel lblNewLabel_6 = new JLabel("\u64CD\u4F5C\u83DC\u5355");lblNewLabel_6.setBounds(15, 10, 54, 15);panel_1.add(lblNewLabel_6);Button button = new Button("\u7B2C\u4E00\u95E8\u8BFE\u7A0B");button.setBounds(10, 31, 76, 23);panel_1.add(button);Button button_1 = new Button("\u4E0B\u4E00\u95E8\u8BFE\u7A0B");button_1.setBounds(10, 61, 76, 23);panel_1.add(button_1);Button button_2 = new Button("\u4E0A\u4E00\u95E8\u8BFE\u7A0B");button_2.setActionCommand("\u4E0A\u4E00\u95E8\u8BFE\u7A0B");button_2.setBounds(10, 90, 76, 23);panel_1.add(button_2);Button button_3 = new Button("\u6700\u540E\u4E00\u95E8\u8BFE");button_3.setBounds(10, 117, 76, 23);panel_1.add(button_3);Choice choice = new Choice();choice.setBounds(10, 149, 76, 21);choice.add("选择课程");choice.add("高等数学");choice.add("大学英语");choice.add("马列主义");choice.add("毛泽东思想");choice.add("计算机图形学");choice.addItemListener(new ItemListener() {@Overridepublic void itemStateChanged(ItemEvent e) {Object[] objs=e.getItemSelectable().getSelectedObjects();for(Object ob:objs){//JOptionPane.showMessageDialog(frame, ob.toString());if("高等数学".equals(ob.toString())){textField_2.setText("高等数学");textField_3.setText("98");}else if("大学英语".equals(ob.toString())){textField_2.setText("大学英语");textField_3.setText("87");}else if("马列主义".equals(ob.toString())){textField_2.setText("马列主义");textField_3.setText("88");}else if("毛泽东思想".equals(ob.toString())){textField_2.setText("毛泽东思想");textField_3.setText("73");}else if("计算机图形学".equals(ob.toString())){textField_2.setText("计算机图形学");textField_3.setText("97");}}}});panel_1.add(choice);}}

这样就能轻松实现登录验证了，本打算从数据库读取数据的，由于时间关系，这里就简单的直接验证了，后续有时间的话再做其他的部分