学生成绩管理系统java+mysql+swing入门级项目开发

简要：

今天做了一个1800行代码的学生成绩管理系统，主要实现增删改查等操作，还大部分功能尚未实现，这个项目是基于java+swing+jdbc+mysql的融合，主要对学习过的知识进行综合的复习,如果项目中有bug的地方，可以在评论区留言，在此谢过。

登陆运行效果

该登陆只能管理员登陆，当用户输入账号和密码时，会与数据库中的信息进行对比，如果信息无误，销毁登陆对话框，显示主窗体，如果输入错误，提示信息并则清空文本框，继续输入。

主界面运行效果图

界面设置运行效果图

此功能为修改窗体大小，背景颜色，位置，标题，没有提供代码，留给感兴趣的靓仔实现

网络配置界面运行效果图

此功能主要用来远程连接数据库,，未提供实现代码。

菜单栏运行效果图

登陆窗体实现

package com.student.frame;
import com.student.Data.Dao;
import com.student.modal.User;
import com.student.util.StringUtil;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.sql.SQLException;
import java.awt.event.ActionEvent;
public class Login extends JDialog {
	private JTextField userField;
	private JPasswordField passwordField;
 
	public Login() {
		
		try {
			setVisible(true);
			 setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
			 
		} catch (Exception e) {
			e.printStackTrace();
		}
		setTitle("学生成绩管理系统");
		setResizable(false);
		
		setSize( 545, 381);
		setLocationRelativeTo(null);
		getContentPane().setLayout(null);
		
		JLabel label = new JLabel("用户登录");
		label.setHorizontalAlignment(SwingConstants.CENTER);
		label.setFont(new Font("Dialog", Font.BOLD, 30));
		label.setBounds(12, 0, 521, 85);
		getContentPane().add(label);
		
		JLabel label_1 = new JLabel("账    号：");
		label_1.setIcon(new ImageIcon(Login.class.getResource("/icon/user4.png")));
		label_1.setFont(new Font("Dialog", Font.BOLD, 15));
		label_1.setBounds(92, 166, 98, 32);
		getContentPane().add(label_1);
		
		JLabel label_2 = new JLabel("密    码：");
		label_2.setIcon(new ImageIcon(Login.class.getResource("/icon/psw3.png")));
		label_2.setFont(new Font("Dialog", Font.BOLD, 15));
		label_2.setBounds(92, 210, 98, 32);
		getContentPane().add(label_2);
		
		userField = new JTextField();
		userField.setBounds(191, 173, 240, 22);
		getContentPane().add(userField);
		userField.setColumns(10);
		
		passwordField = new JPasswordField();
		passwordField.setEchoChar('*');
		passwordField.setBounds(191, 218, 240, 22);
		getContentPane().add(passwordField);
		
		JButton ok = new JButton(" ");
		
		//登陆事件
		ok.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				
				if(StringUtil.isEmpy(userField.getText())){
					JOptionPane.showMessageDialog(null, "账号不能为空");
					return;
				}
				else if(StringUtil.isEmpy(new String(passwordField.getPassword()))){
					JOptionPane.showMessageDialog(null, "密码不能为空");
					return;
				}
				else {
					 User u=new User();
					 u.setUser(Double.parseDouble(userField.getText()));
					 u.setPassword(new String(passwordField.getPassword()));
					try {
						User user = Dao.checkLogin(u);
						if(user!=null) {
							 
							JOptionPane.showMessageDialog(null, "登陆成功");
							dispose();
							new MainWindow().setVisible(true);
							
							
							 
						}
						else {
							JOptionPane.showMessageDialog(null, "账号或密码有误");
							userField.setText("");
							passwordField.setText("");
							return;
						}
					} catch (SQLException e) {
						 
						e.printStackTrace();
					}
					
					}
				}
			
		});
		ok.setIcon(new ImageIcon(Login.class.getResource("/icon/exit2.png")));
		ok.setBounds(155, 285, 73, 32);
		getContentPane().add(ok);
		
		JButton cancel = new JButton(" ");
		//退出系统事件
		cancel.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				System.exit(0);
			}
		});
		passwordField.addKeyListener(new java.awt.event.KeyAdapter() {
			  public void keyTyped(java.awt.event.KeyEvent e) {
				  if(e.getKeyChar()=='\n') {
					  ok.doClick(10);
				  }
			  }
		 });
		cancel.setIcon(new ImageIcon(Login.class.getResource("/icon/exite1.png")));
		cancel.setBounds(358, 285, 73, 32);
		getContentPane().add(cancel);
		
		JLabel lblNewLabel = new JLabel("登陆背景");
		lblNewLabel.setIcon(new ImageIcon(Login.class.getResource("/iimages/timg2.jpeg")));
		lblNewLabel.setBounds(0, -54, 545, 405);
		getContentPane().add(lblNewLabel);
	}
}

窗体界面设置功能对话框

package com.student.frame;

import java.awt.BorderLayout;
import java.awt.FlowLayout;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.LayoutStyle.ComponentPlacement;
import java.awt.Font;
import javax.swing.JTextField;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;

public class ThemeFrame extends JDialog {

	private final JPanel contentPanel = new JPanel();
	private JTextField textField;
	private JTextField textField_1;
	private JTextField textField_2;
	private JTextField textField_3;
	private JTextField textField_4;
	public ThemeFrame() {
		setModal(true);
		setResizable(false);
		try {
			 
			 setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
			 setVisible(false);
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		setTitle("主题修改");
		
		setSize(423, 416);
		setLocationRelativeTo(null);
		getContentPane().setLayout(new BorderLayout());
		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
		getContentPane().add(contentPanel, BorderLayout.CENTER);
		
		JComboBox backgroundBox = new JComboBox();
		
		JLabel background = new JLabel("窗口背景：");
		background.setFont(new Font("Dialog", Font.BOLD, 15));
		
		JLabel title = new JLabel("标        题：");
		title.setFont(new Font("Dialog", Font.BOLD, 15));
		
		textField = new JTextField();
		textField.setColumns(15);
		
		JLabel label = new JLabel("窗口大小：");
		label.setFont(new Font("Dialog", Font.BOLD, 15));
		
		textField_1 = new JTextField();
		textField_1.setText(" ");
		textField_1.setColumns(5);
		
		JLabel lblNewLabel_2 = new JLabel("X：");
		
		JLabel lblY = new JLabel("Y：");
		
		textField_2 = new JTextField();
		textField_2.setText(" ");
		textField_2.setColumns(5);
		
		JLabel label_1 = new JLabel("窗口位置：");
		label_1.setFont(new Font("Dialog", Font.BOLD, 15));
		
		JLabel lblX = new JLabel("X：");
		
		textField_3 = new JTextField();
		textField_3.setText(" ");
		textField_3.setColumns(5);
		
		JLabel lblY_1 = new JLabel("Y：");
		
		textField_4 = new JTextField();
		textField_4.setText(" ");
		textField_4.setColumns(5);
		
		JButton apllyAndClose = new JButton("应用和关闭");
		apllyAndClose.setIcon(new ImageIcon(ThemeFrame.class.getResource("/icon/应用.png")));
		/**
		 * 主题修改单机事件
		 * 
		 */
		apllyAndClose.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				dispose();
			}
		});
		
		JButton Default = new JButton("默认");
		Default.setIcon(new ImageIcon(ThemeFrame.class.getResource("/icon/默认.png")));
		GroupLayout gl_contentPanel = new GroupLayout(contentPanel);
		gl_contentPanel.setHorizontalGroup(
			gl_contentPanel.createParallelGroup(Alignment.LEADING)
				.addGroup(gl_contentPanel.createSequentialGroup()
					.addContainerGap()
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.TRAILING)
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addComponent(background)
							.addPreferredGap(ComponentPlacement.RELATED)
							.addComponent(backgroundBox, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
							.addContainerGap(283, Short.MAX_VALUE))
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addComponent(label)
							.addPreferredGap(ComponentPlacement.RELATED)
							.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
								.addComponent(lblY)
								.addComponent(lblNewLabel_2))
							.addPreferredGap(ComponentPlacement.RELATED)
							.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
								.addGroup(gl_contentPanel.createSequentialGroup()
									.addComponent(textField_1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
									.addGap(31)
									.addComponent(label_1))
								.addComponent(textField_2, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
							.addPreferredGap(ComponentPlacement.RELATED)
							.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
								.addComponent(lblX)
								.addComponent(lblY_1))
							.addGap(3)
							.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
								.addComponent(textField_3, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
								.addComponent(textField_4, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
							.addGap(36))
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addComponent(title)
							.addPreferredGap(ComponentPlacement.RELATED)
							.addComponent(textField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
							.addContainerGap())
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addComponent(Default)
							.addPreferredGap(ComponentPlacement.RELATED, 237, Short.MAX_VALUE)
							.addComponent(apllyAndClose)
							.addContainerGap())))
		);
		gl_contentPanel.setVerticalGroup(
			gl_contentPanel.createParallelGroup(Alignment.LEADING)
				.addGroup(gl_contentPanel.createSequentialGroup()
					.addGap(34)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(background)
						.addComponent(backgroundBox, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(title)
						.addComponent(textField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(27)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(label)
						.addComponent(lblNewLabel_2)
						.addComponent(textField_1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
						.addComponent(label_1)
						.addComponent(lblX)
						.addComponent(textField_3, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addPreferredGap(ComponentPlacement.RELATED)
							.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
								.addComponent(lblY)
								.addComponent(textField_2, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addGap(25)
							.addComponent(lblY_1))
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addPreferredGap(ComponentPlacement.RELATED)
							.addComponent(textField_4, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
					.addPreferredGap(ComponentPlacement.RELATED, 115, Short.MAX_VALUE)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(apllyAndClose)
						.addComponent(Default))
					.addGap(38))
		);
		contentPanel.setLayout(gl_contentPanel);
		{
			JPanel buttonPane = new JPanel();
			buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
			getContentPane().add(buttonPane, BorderLayout.SOUTH);
		}
	}
}

网络配置对话框实现代码

package com.student.modal;

import java.awt.BorderLayout;
import java.awt.FlowLayout;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JLabel;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.ImageIcon;
import javax.swing.border.LineBorder;
import java.awt.Color;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JTextField;
import javax.swing.JCheckBox;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class InternetConfigFrame extends JDialog {

	private final JPanel contentPanel = new JPanel();
	private JTextField textField;
	private JTextField textField_1;
	private JTextField textField_2;
	private JTextField textField_3;
	private JTextField textField_4;
 
	public InternetConfigFrame() {
		try {
			 
			 setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
			 setVisible(false);
		} catch (Exception e) {
			e.printStackTrace();
		}
		setResizable(false);
		setModal(true);
		setTitle("MySQL 新建连接");
		setSize(591, 556);
		setLocationRelativeTo(null);
		getContentPane().setLayout(new BorderLayout());
		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
		getContentPane().add(contentPanel, BorderLayout.CENTER);
		
		JPanel panel = new JPanel();
		panel.setBackground(Color.WHITE);
		panel.setBorder(new LineBorder(Color.LIGHT_GRAY, 5));
		
		JLabel label_2 = new JLabel("连接名：");
		
		textField = new JTextField();
		textField.setColumns(30);
		
		JLabel label_3 = new JLabel("主机：");
		
		JLabel lblNewLabel_5 = new JLabel("端口");
		
		JLabel label_4 = new JLabel("用户名：");
		
		JLabel label_5 = new JLabel("密码：");
		
		textField_1 = new JTextField();
		textField_1.setColumns(10);
		
		textField_2 = new JTextField();
		textField_2.setColumns(10);
		
		textField_3 = new JTextField();
		textField_3.setColumns(10);
		
		textField_4 = new JTextField();
		textField_4.setColumns(10);
		
		JCheckBox chckbxNewCheckBox = new JCheckBox("保存密码");
		
		JPanel panel_1 = new JPanel();
		panel_1.setBorder(new LineBorder(Color.WHITE, 2));
		GroupLayout gl_contentPanel = new GroupLayout(contentPanel);
		gl_contentPanel.setHorizontalGroup(
			gl_contentPanel.createParallelGroup(Alignment.LEADING)
				.addGroup(gl_contentPanel.createSequentialGroup()
					.addGap(22)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addComponent(panel, GroupLayout.PREFERRED_SIZE, 539, GroupLayout.PREFERRED_SIZE)
							.addContainerGap())
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
								.addComponent(label_2)
								.addComponent(label_3)
								.addComponent(lblNewLabel_5)
								.addComponent(label_4)
								.addComponent(label_5))
							.addGap(75)
							.addGroup(gl_contentPanel.createParallelGroup(Alignment.TRAILING)
								.addComponent(textField, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 378, Short.MAX_VALUE)
								.addComponent(textField_1, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 378, Short.MAX_VALUE)
								.addComponent(textField_2, Alignment.LEADING, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
								.addGroup(Alignment.LEADING, gl_contentPanel.createParallelGroup(Alignment.TRAILING, false)
									.addComponent(textField_4, Alignment.LEADING)
									.addComponent(textField_3, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 241, Short.MAX_VALUE)
									.addComponent(chckbxNewCheckBox, Alignment.LEADING)))
							.addGap(58))))
				.addGroup(gl_contentPanel.createSequentialGroup()
					.addContainerGap()
					.addComponent(panel_1, GroupLayout.PREFERRED_SIZE, 569, GroupLayout.PREFERRED_SIZE)
					.addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
		);
		gl_contentPanel.setVerticalGroup(
			gl_contentPanel.createParallelGroup(Alignment.LEADING)
				.addGroup(gl_contentPanel.createSequentialGroup()
					.addComponent(panel, GroupLayout.PREFERRED_SIZE, 114, GroupLayout.PREFERRED_SIZE)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.LEADING)
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addGap(38)
							.addComponent(label_2))
						.addGroup(gl_contentPanel.createSequentialGroup()
							.addGap(26)
							.addComponent(textField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
					.addGap(26)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_3)
						.addComponent(textField_1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(29)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(lblNewLabel_5)
						.addComponent(textField_2, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(26)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_4)
						.addComponent(textField_3, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(18)
					.addGroup(gl_contentPanel.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_5)
						.addComponent(textField_4, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(18)
					.addComponent(chckbxNewCheckBox)
					.addGap(26)
					.addComponent(panel_1, GroupLayout.PREFERRED_SIZE, 62, GroupLayout.PREFERRED_SIZE)
					.addContainerGap())
		);
		
		JButton button = new JButton("测试连接");
		button.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/测试 检测.png")));
		
		JButton button_1 = new JButton("确定");
		button_1.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/应用.png")));
		
		JButton button_2 = new JButton("取消");
		button_2.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/取消.png")));
		button_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				dispose();//销毁对话框
			}
		});
		GroupLayout gl_panel_1 = new GroupLayout(panel_1);
		gl_panel_1.setHorizontalGroup(
			gl_panel_1.createParallelGroup(Alignment.LEADING)
				.addGroup(Alignment.TRAILING, gl_panel_1.createSequentialGroup()
					.addContainerGap()
					.addComponent(button, GroupLayout.PREFERRED_SIZE, 143, GroupLayout.PREFERRED_SIZE)
					.addPreferredGap(ComponentPlacement.RELATED, 277, Short.MAX_VALUE)
					.addComponent(button_1)
					.addPreferredGap(ComponentPlacement.UNRELATED)
					.addComponent(button_2)
					.addGap(5))
		);
		gl_panel_1.setVerticalGroup(
			gl_panel_1.createParallelGroup(Alignment.LEADING)
				.addGroup(Alignment.TRAILING, gl_panel_1.createSequentialGroup()
					.addContainerGap(18, Short.MAX_VALUE)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.TRAILING)
						.addComponent(button)
						.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
							.addComponent(button_1)
							.addComponent(button_2)))
					.addContainerGap())
		);
		panel_1.setLayout(gl_panel_1);
		
		JLabel lblNewLabel = new JLabel("Navicat");
		
		JLabel lblNewLabel_1 = new JLabel(" ");
		lblNewLabel_1.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/连接.png")));
		
		JLabel lblNewLabel_2 = new JLabel("数据库");
		
		JLabel lblNewLabel_3 = new JLabel(" ");
		lblNewLabel_3.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/数据库.png")));
		
		JLabel lblNewLabel_4 = new JLabel(" ");
		lblNewLabel_4.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/直线_图形对象_jurassic.png")));
		
		JLabel label = new JLabel(" ");
		label.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/直线_图形对象_jurassic.png")));
		
		JLabel label_1 = new JLabel(" ");
		label_1.setIcon(new ImageIcon(InternetConfigFrame.class.getResource("/icon/直线_图形对象_jurassic.png")));
		GroupLayout gl_panel = new GroupLayout(panel);
		gl_panel.setHorizontalGroup(
			gl_panel.createParallelGroup(Alignment.LEADING)
				.addGroup(gl_panel.createSequentialGroup()
					.addGap(150)
					.addGroup(gl_panel.createParallelGroup(Alignment.TRAILING)
						.addComponent(lblNewLabel)
						.addComponent(lblNewLabel_1))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addComponent(label_1, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
					.addPreferredGap(ComponentPlacement.RELATED)
					.addComponent(lblNewLabel_4)
					.addPreferredGap(ComponentPlacement.RELATED)
					.addComponent(label, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
					.addPreferredGap(ComponentPlacement.RELATED, 31, Short.MAX_VALUE)
					.addGroup(gl_panel.createParallelGroup(Alignment.LEADING)
						.addComponent(lblNewLabel_3)
						.addComponent(lblNewLabel_2))
					.addGap(152))
		);
		gl_panel.setVerticalGroup(
			gl_panel.createParallelGroup(Alignment.LEADING)
				.addGroup(Alignment.TRAILING, gl_panel.createSequentialGroup()
					.addContainerGap(19, Short.MAX_VALUE)
					.addGroup(gl_panel.createParallelGroup(Alignment.BASELINE)
						.addComponent(lblNewLabel_3)
						.addComponent(lblNewLabel_1))
					.addGap(18)
					.addGroup(gl_panel.createParallelGroup(Alignment.BASELINE)
						.addComponent(lblNewLabel)
						.addComponent(lblNewLabel_2))
					.addGap(27))
				.addGroup(gl_panel.createSequentialGroup()
					.addGap(44)
					.addGroup(gl_panel.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_1, GroupLayout.PREFERRED_SIZE, 21, GroupLayout.PREFERRED_SIZE)
						.addComponent(lblNewLabel_4, GroupLayout.PREFERRED_SIZE, 21, Short.MAX_VALUE)
						.addComponent(label, GroupLayout.PREFERRED_SIZE, 21, GroupLayout.PREFERRED_SIZE))
					.addContainerGap())
		);
		panel.setLayout(gl_panel);
		contentPanel.setLayout(gl_contentPanel);
		{
			JPanel buttonPane = new JPanel();
			buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
			getContentPane().add(buttonPane, BorderLayout.SOUTH);
		}
		
		JMenuBar menuBar = new JMenuBar();
		setJMenuBar(menuBar);
		
		JMenu menu = new JMenu("常规");
		menuBar.add(menu);
	}
}

主窗体实现

package com.student.frame;

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.util.List;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

import com.student.Data.Dao;
import com.student.modal.InternetConfigFrame;
import com.student.modal.StudentData;
import com.student.util.StringUtil;

import javax.swing.JToolBar;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import java.awt.FlowLayout;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.SwingConstants;
import javax.swing.ImageIcon;
import java.awt.Font;
import java.awt.HeadlessException;
import java.awt.event.ActionListener;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.awt.event.ActionEvent;
import javax.swing.table.DefaultTableModel;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import java.awt.Color;
import javax.swing.UIManager;
import javax.swing.JLabel;
import javax.swing.border.TitledBorder;
import javax.swing.border.LineBorder;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class MainWindow extends JFrame {
	 /**
	  * 表单
	  */
	private static JTable table;
	/**
	 * 文本域
	 */
	private JTextField stuField;
	private JTextField nameField;
	private JTextField ageField;

	private JTextField mathField;
	private JTextField javaField;
	private JTextField cField;
	private JTextField englishField;
	private JRadioButton radioMan;
	private JRadioButton radioFemal;
	private final ButtonGroup buttonGroup = new ButtonGroup();
	public static void main(String[] args) {
		 
			 
				try {
					
					MainWindow frame = new MainWindow();
					
					frame.setVisible(false);
				} catch (Exception e) {
					e.printStackTrace();
				}
			 
		 
	}

	 
	public MainWindow() {
		new Login();
		setFont(new Font("Dialog", Font.PLAIN, 18));
		setTitle("学生成绩管理系统");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 800, 600);
		setLocationRelativeTo(null);
		JMenuBar menuBar = new JMenuBar();
		setJMenuBar(menuBar);
		
		JMenu menu = new JMenu("基本信息");
		 
		/**
		 * 
		 * 主页监听事件
		 * 
		 */
		 
		menu.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/管理(2).png")));
		menuBar.add(menu);
		
		JMenu menu_1 = new JMenu("设置");
		menu_1.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/设置.png")));
		menuBar.add(menu_1);
		
		JMenuItem menuItem = new JMenuItem("主题");
		menuItem.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				new ThemeFrame().setVisible(true);
			}
		});
		menuItem.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/界面设计.png")));
		menu_1.add(menuItem);
		
		JMenuItem menuItem_2 = new JMenuItem("网络配置");
		/**
		 * 
		 * 网络配置单机事件
		 * 
		 */
		menuItem_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				new InternetConfigFrame().setVisible(true);
			}
		});
		menuItem_2.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/网络.png")));
		menu_1.add(menuItem_2);
		
		JMenuItem menuItem_1 = new JMenuItem("退出系统");
		menuItem_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				System.exit(0);
			}
		});
		menuItem_1.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/退出.png")));
		menu_1.add(menuItem_1);
		
		JButton button = new JButton("刷新");
		button.setForeground(Color.BLACK);
		button.setBackground(UIManager.getColor("Button.background"));
		/**
		 * 
		 * 刷新表格
		 * 
		 */
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				try {
					fillTable(Dao.selectData());
				} catch (SQLException e) {
					 
					e.printStackTrace();
				}
			}
		});
		button.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/刷新.png")));
		menuBar.add(button);
		getContentPane().setLayout(new BorderLayout(0, 0));
		
		JPanel panel = new JPanel();
		FlowLayout flowLayout_1 = (FlowLayout) panel.getLayout();
		flowLayout_1.setVgap(70);
		flowLayout_1.setHgap(0);
		getContentPane().add(panel, BorderLayout.SOUTH);
		
		JPanel panel_1 = new JPanel();
		panel_1.setBorder(new TitledBorder(null, "\u8868\u5355\u64CD\u4F5C", TitledBorder.LEADING, TitledBorder.TOP, null, null));
		getContentPane().add(panel_1, BorderLayout.WEST);
		
		JLabel stuText = new JLabel("学号：");
		
		stuField = new JTextField();
		/**
		 * 
		 * 学号输入显示信息
		 * 
		 */
		stuField.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				searchData();
			}
		});
		stuField.setColumns(10);
		
		JLabel nameText = new JLabel("姓名：");
		
		nameField = new JTextField();
		nameField.setColumns(10);
		
		JLabel ageText = new JLabel("年龄：");
		
		ageField = new JTextField();
		ageField.setColumns(10);
		
		JLabel label = new JLabel("性别：");
		
		radioMan = new JRadioButton("男");
		radioMan.setSelected(true);
		buttonGroup.add(radioMan);
		
		radioFemal = new JRadioButton("女");
		buttonGroup.add(radioFemal);
		
		JLabel label_1 = new JLabel("高数：");
		
		mathField = new JTextField();
		mathField.setColumns(10);
		
		JLabel lblJava = new JLabel("java:");
		
		javaField = new JTextField();
		javaField.setColumns(10);
		
		JLabel lblC = new JLabel("c语言:");
		
		cField = new JTextField();
		cField.setColumns(10);
		
		JLabel label_2 = new JLabel("英语：");
		
		englishField = new JTextField();
		englishField.setColumns(10);
		
		JButton button_1 = new JButton("修改");
		/**
		 * 
		 * 修改信息事件
		 * 
		 */
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				StudentData stu=new StudentData();
				if(StringUtil.isEmpy(stuField.getText())) {
					JOptionPane.showMessageDialog(null, "学号不能为空！");
				}
				else if(StringUtil.isEmpy(nameField.getText())) {
					JOptionPane.showMessageDialog(null, "姓名不能为空！");
				}
				else if(StringUtil.isEmpy(ageField.getText())) {
					JOptionPane.showMessageDialog(null, "年龄不能为空！");
				}
				else {
					stu.setNum(Integer.parseInt(stuField.getText()));
					stu.setName(nameField.getText());
					stu.setAge(Integer.parseInt(ageField.getText()));
					if(radioMan.isSelected()) {
						stu.setSex("男");
					}else {
						stu.setSex("女");
					}
					stu.setNum(Integer.parseInt(stuField.getText()));
					
					stu.setMath(Float.parseFloat(mathField.getText()));
					stu.setJava(Float.parseFloat(javaField.getText()));
					stu.setC(Float.parseFloat(cField.getText()));
					stu.setEnglish(Float.parseFloat(englishField.getText()));
					try {
						if(Dao.updateData(stu)>0) {
							JOptionPane.showMessageDialog(null, "修改成功！");
							fillTable(Dao.selectData());
						}
						else {
							JOptionPane.showMessageDialog(null, "修改失败！");
						}
					} catch (SQLException e) {
						 
						e.printStackTrace();
					}
				}
			 
			}
		});
		button_1.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/修改(2).png")));
		
		JButton button_2 = new JButton("添加");
		/**
		 * 
		 * 添加信息事件
		 * 
		 */
		button_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				if(StringUtil.isEmpy(stuField.getText())) {
					JOptionPane.showMessageDialog(null, "学号不能为空！");
				}
				else if(StringUtil.isEmpy(nameField.getText())) {
					JOptionPane.showMessageDialog(null, "姓名不能为空！");
				}
				else if(StringUtil.isEmpy(ageField.getText())) {
					JOptionPane.showMessageDialog(null, "年龄不能为空！");
				}else {
				
				
				StudentData stu=new StudentData();
				stu.setNum(Integer.parseInt(stuField.getText()));
				stu.setName(nameField.getText());
			    stu.setAge(Integer.parseInt(ageField.getText()));
			    if(radioMan.isSelected()) {
			    	stu.setSex("男");
			    }else {
			    	stu.setSex("女");
			    }
			    stu.setMath(Float.parseFloat(mathField.getText()));
			    stu.setJava(Float.parseFloat(javaField.getText()));
			    stu.setC(Float.parseFloat(cField.getText()));
			    stu.setEnglish(Float.parseFloat(englishField.getText()));
				try {
					if(JOptionPane.showConfirmDialog(null, "确定添加！")==0) {
						if(Dao.addData(stu)==1) {
							JOptionPane.showMessageDialog(null, "添加成功！");
							fillTable(Dao.selectData());//刷新表单
						}
						else {
							JOptionPane.showMessageDialog(null, "添加失败！");
							return;
						}
					}else {
						return;
					}
				} catch (SQLException e) {
					 
					e.printStackTrace();
				}
				
			}
			}
		});
		button_2.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/添加.png")));
		
		JButton button_3 = new JButton("删除");
		/**
		 * 
		 * 删除鼠标单机事件
		 * 
		 */
		button_3.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				StudentData stu=new StudentData();
				if(StringUtil.isEmpy(stuField.getText())) {
					JOptionPane.showMessageDialog(null, "请输入你要删除的学号！");
				}else {
					stu.setNum(Integer.parseInt(stuField.getText()));
					try {
					 
						if(JOptionPane.showConfirmDialog(null, "确定要删除")==0) {
							if(Dao.deleteData(stu)>1) {
								JOptionPane.showMessageDialog(null, "删除成功！");
								clearText();
								fillTable(Dao.selectData());
								clearText();
							}else {
								JOptionPane.showMessageDialog(null, "删除失败！");
							}
							
						}else {
							return;
						}
					} catch (SQLException e) {
						 
						e.printStackTrace();
					}
				}
				
				
			}
		});
		button_3.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/删 除 (1).png")));
		
		JButton button_4 = new JButton("搜索");
		/**
		 * 
		 * 搜索点击事件
		 * 
		 */
		button_4.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				searchData();
			}
		});
		button_4.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/查找(1).png")));
		
		JButton button_5 = new JButton("清空");
		/**
		 * 
		 * 清空表单事件
		 * 
		 */
		button_5.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				
				clearText();
			}
		});
		button_5.setIcon(new ImageIcon(MainWindow.class.getResource("/icon/清空.png")));
		GroupLayout gl_panel_1 = new GroupLayout(panel_1);
		gl_panel_1.setHorizontalGroup(
			gl_panel_1.createParallelGroup(Alignment.TRAILING)
				.addGroup(gl_panel_1.createSequentialGroup()
					.addContainerGap(20, Short.MAX_VALUE)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
						.addComponent(button_1)
						.addGroup(gl_panel_1.createSequentialGroup()
							.addGroup(gl_panel_1.createParallelGroup(Alignment.TRAILING)
								.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
									.addComponent(lblJava)
									.addComponent(lblC)
									.addGroup(gl_panel_1.createParallelGroup(Alignment.TRAILING)
										.addComponent(label_1)
										.addComponent(label)))
								.addComponent(label_2)
								.addComponent(ageText)
								.addComponent(nameText)
								.addComponent(stuText))
							.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
								.addGroup(gl_panel_1.createSequentialGroup()
									.addPreferredGap(ComponentPlacement.RELATED)
									.addComponent(javaField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
								.addGroup(gl_panel_1.createSequentialGroup()
									.addGap(18)
									.addComponent(radioMan)
									.addGap(18)
									.addComponent(radioFemal))
								.addGroup(gl_panel_1.createSequentialGroup()
									.addPreferredGap(ComponentPlacement.RELATED)
									.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
										.addComponent(englishField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
										.addComponent(cField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
										.addComponent(button_2, Alignment.TRAILING)))
								.addGroup(gl_panel_1.createSequentialGroup()
									.addPreferredGap(ComponentPlacement.RELATED)
									.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
										.addComponent(stuField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
										.addComponent(mathField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
										.addComponent(nameField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
										.addComponent(ageField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))))
						.addGroup(gl_panel_1.createSequentialGroup()
							.addPreferredGap(ComponentPlacement.RELATED)
							.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
								.addComponent(button_5)
								.addGroup(gl_panel_1.createSequentialGroup()
									.addComponent(button_3)
									.addPreferredGap(ComponentPlacement.RELATED)
									.addComponent(button_4)))))
					.addGap(18))
		);
		gl_panel_1.setVerticalGroup(
			gl_panel_1.createParallelGroup(Alignment.LEADING)
				.addGroup(gl_panel_1.createSequentialGroup()
					.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
						.addComponent(stuText)
						.addComponent(stuField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
						.addComponent(nameText)
						.addComponent(nameField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
						.addComponent(ageText)
						.addComponent(ageField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
						.addGroup(gl_panel_1.createSequentialGroup()
							.addGap(8)
							.addComponent(label))
						.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
							.addComponent(radioMan)
							.addComponent(radioFemal)))
					.addPreferredGap(ComponentPlacement.UNRELATED)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_1)
						.addComponent(mathField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(18)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
						.addComponent(lblJava)
						.addComponent(javaField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addGap(18)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.BASELINE)
						.addComponent(lblC)
						.addComponent(cField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.UNRELATED)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
						.addComponent(label_2)
						.addComponent(englishField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
					.addPreferredGap(ComponentPlacement.UNRELATED)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
						.addComponent(button_1)
						.addComponent(button_2))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
						.addGroup(gl_panel_1.createSequentialGroup()
							.addComponent(button_3)
							.addPreferredGap(ComponentPlacement.RELATED, 9, Short.MAX_VALUE)
							.addComponent(button_5))
						.addGroup(gl_panel_1.createSequentialGroup()
							.addComponent(button_4)
							.addContainerGap())))
		);
		panel_1.setLayout(gl_panel_1);
		
		JPanel panel_2 = new JPanel();
		FlowLayout flowLayout_2 = (FlowLayout) panel_2.getLayout();
		flowLayout_2.setHgap(0);
		flowLayout_2.setVgap(60);
		getContentPane().add(panel_2, BorderLayout.NORTH);
		
		JPanel panel_3 = new JPanel();
		FlowLayout flowLayout_3 = (FlowLayout) panel_3.getLayout();
		flowLayout_3.setHgap(120);
		flowLayout_3.setVgap(50);
		getContentPane().add(panel_3, BorderLayout.EAST);
		
		JScrollPane scrollPane = new JScrollPane();
		 
		getContentPane().add(scrollPane, BorderLayout.CENTER);
		
		table = new JTable();
		/**
		 * 
		 * 表单选中事件
		 * 
		 */
		table.addMouseListener(new MouseAdapter() {
			@Override
			public void mousePressed(MouseEvent e) {
				int row=table.getSelectedRow();
				stuField.setText(String.valueOf(table.getValueAt(row, 1)));
				nameField.setText((String) (table.getValueAt(row, 2)));
				ageField.setText(String.valueOf(table.getValueAt(row, 3)));
				String sex=(String) table.getValueAt(row, 4);
				if(sex.equals("男")) {
					 radioMan.setSelected(true);
				}
				else {
					radioFemal.setSelected(true);
				}
				
				
				mathField.setText(String.valueOf(table.getValueAt(row, 5)));
				javaField.setText(String.valueOf(table.getValueAt(row, 6)));
				cField.setText(String.valueOf(table.getValueAt(row, 7)));
				englishField.setText(String.valueOf(table.getValueAt(row, 8)));
				
			 
			}
		});
		
		/**
		 * 
		 * 
		 * 菜单模型
		 * 
		 * 
		 */
		table.setModel(new DefaultTableModel(
			new Object[][] {
			},
			new String[] {
				"\u5E8F\u53F7", "\u5B66\u53F7", "\u59D3\u540D", "\u5E74\u9F84", "\u6027\u522B", "\u9AD8\u6570", "JAVA", "C\u8BED\u8A00", "\u82F1\u8BED"
			}
		) {
			boolean[] columnEditables = new boolean[] {
				true, true, true, true, true, true, true, true, false
			};
			public boolean isCellEditable(int row, int column) {
				return columnEditables[column];
				package com.student.util;

				public class StringUtil {
					public static Boolean isEmpy(String str) {
						if(str==null||"".equals(str.trim())) {
							return true;
						}
						else {
							return false;
						}
						
					}
					public static Boolean notIsEmpy(String str) {
						if(str!=null&&!"".equals(str.trim())) {
							return true;
						}
						else {
							return false;
						}
					}

				}
	}
		});
		
		
		table.getColumnModel().getColumn(8).setResizable(false);
		try {
			this.fillTable(Dao.selectData());
		} catch (SQLException e1) {
			 
			e1.printStackTrace();
		}
		scrollPane.setViewportView(table);
	 
	}
	 /**
	  * 
	  * 填充表格方法
	  * @param result
	  * 
	  */
	public static  void fillTable( ResultSet result) {
		DefaultTableModel det=(DefaultTableModel) table.getModel();
		det.setRowCount(0);
		try {
			ResultSet rs=result;
			while(rs.next()) {
				Vector v=new Vector();
				v.add(rs.getInt(1));
				v.add(rs.getInt(2));
				v.add(rs.getString(3));
				v.add(rs.getString(4));
				v.add(rs.getString(5));
				v.add(rs.getString(6));
				v.add(rs.getString(7));
				v.add(rs.getString(8));
				v.add(rs.getString(9));
			    det.addRow(v);
				 
			}
		} catch (SQLException e) {
			 
			e.printStackTrace();
		}
	  
	}
	/**
	 * 
	 * 
	 * 搜索数据
	 * 
	 * 
	 */
	public void searchData() {
		
		if(StringUtil.isEmpy(stuField.getText())) {
			JOptionPane.showMessageDialog(null, "请输入学号！");
			return;
		}else {
			try {
				StudentData stu=new StudentData();
				stu.setNum(Integer.parseInt(stuField.getText()));
				ResultSet rs =Dao.search(stu);
				if(rs.next()) {
					fillTable(Dao.search(stu));
					stuField.setText(String.valueOf(rs.getInt(2)));
					nameField.setText(rs.getString(3));
					ageField.setText(String.valueOf(rs.getInt(4)));
					if(rs.getString(5).equals("男")) {
						radioMan.setSelected(true);
					}else {
						radioFemal.setSelected(true);
					}
					mathField.setText(String.valueOf(rs.getFloat(6)));
					javaField.setText(String.valueOf(rs.getFloat(7)));
					cField.setText(String.valueOf(rs.getFloat(8)));
					englishField.setText(String.valueOf(rs.getFloat(9)));
					return;
				}
				else {
					JOptionPane.showMessageDialog(null, "没有此学生或学号输入有误");
					return;
				}
			} catch (SQLException e) {
				 
				e.printStackTrace();
			}
		
	}
		
	}
	/**
	 * 
	 * 文本框制空
	 */
	public void clearText() {
		stuField.setText("");
		nameField.setText("");
		ageField.setText("");
		radioMan.setSelected(true);
		mathField.setText("");
		javaField.setText("");
		cField.setText("");
		englishField.setText("");
	}
}

字符串判空工具代码

package com.student.util;

public class StringUtil {
	public static Boolean isEmpy(String str) {
		if(str==null||"".equals(str.trim())) {
			return true;
		}
		else {
			return false;
		}
		
	}
	public static Boolean notIsEmpy(String str) {
		if(str!=null&&!"".equals(str.trim())) {
			return true;
		}
		else {
			return false;
		}
	}

}

学生信息模型

package com.student.modal;

public class StudentData {
	private int id;
	private int num;
	private String name;
	private String sex;
	private int age;
	private float math;
	private float java;
	private float c;
	private float english;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public int getNum() {
		return num;
	}
	public void setNum(int num) {
		this.num = num;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public float getMath() {
		return math;
	}
	public void setMath(float math) {
		this.math = math;
	}
	public float getJava() {
		return java;
	}
	public void setJava(float java) {
		this.java = java;
	}
	public float getC() {
		return c;
	}
	public void setC(float c) {
		this.c = c;
	}
	public float getEnglish() {
		return english;
	}
	public void setEnglish(float english) {
		this.english = english;
	}
	 

}

用户登陆信息模型

package com.student.modal;

public class User {
	private double user;
	private String password;
	public Double getUser() {
		return user;
	}
	public void setUser(Double user) {
		this.user = user;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}

}

界面修改模型

package com.student.modal;

public class ThemeValue {
	private int X1;
	private int Y1;
	private int X2;
	private int Y2;
	private String themeTitle;
	private String backgroundColor;
	public int getX1() {
		return X1;
	}
	public void setX1(int x1) {
		X1 = x1;
	}
	public int getY1() {
		return Y1;
	}
	public void setY1(int y1) {
		Y1 = y1;
	}
	public int getX2() {
		return X2;
	}
	public void setX2(int x2) {
		X2 = x2;
	}
	public int getY2() {
		return Y2;
	}
	public void setY2(int y2) {
		Y2 = y2;
	}
	public String getThemeTitle() {
		return themeTitle;
	}
	public void setThemeTitle(String themeTitle) {
		this.themeTitle = themeTitle;
	}
	public String getBackgroundColor() {
		return backgroundColor;
	}
	public void setBackgroundColor(String backgroundColor) {
		this.backgroundColor = backgroundColor;
	}
	 
	

}

数据库后台实现

package com.student.Data;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import com.mysql.jdbc.PreparedStatement;
import com.student.modal.StudentData;
import com.student.modal.User;

public class Dao {
	/**
	 * 变量定义
	 */
	private static Connection conn=null;
	private static String user="root";
	private static String password="root";
	private static String DRIVER="com.mysql.jdbc.Driver";
	private static String dataUrl="jdbc:mysql://localhost:3306/StudentSystem?useUnicode=true&characterEncoding=utf-8";
	/**
	 * 加载驱动
	 * 获取数据库连接
	 */
	public Dao() {
		try {
			Class.forName(DRIVER);
			if(conn==null) {
				conn=DriverManager.getConnection(dataUrl,user,password);
			}
			else {
				return;
			}
			
		} catch (Exception e) {
			 
			e.printStackTrace();
		}
	}
	/**
	 * 
	 * 关闭数据库
	 */
	public static void close() {
		try {
			conn.close();
		} catch (SQLException e) {
			 
			e.printStackTrace();
		}
	}
	 
	public static PreparedStatement prepareStatement(String sql) throws SQLException {
		PreparedStatement pstmt = null;
		new Dao();
		return pstmt = (PreparedStatement) conn.prepareStatement(sql);
	}
	/**
	 * 用户登陆检验后台
	 * @param user
	 * @return
	 * @throws SQLException
	 */
	public static User checkLogin(User user) throws SQLException {
		User reUser=null;
		String sql =  "select *  from user where user=? and password=?";
		PreparedStatement pstmt=Dao.prepareStatement(sql);
		pstmt.setDouble(1, user.getUser());
		pstmt.setString(2, user.getPassword());
		ResultSet rs=pstmt.executeQuery();
		if(rs.next()){
			reUser=new User();
			reUser.setUser(rs.getDouble(1));
			reUser.setPassword(rs.getString(2));
		}
		pstmt.close();
		return reUser;
		 
	}
	 
	/**
	 * 搜索数据后台
	 * @return
	 * @throws SQLException
	 */
	public static ResultSet selectData() throws SQLException {
		String sql="select * from StudentData";
		PreparedStatement pstmt=Dao.prepareStatement(sql);
		return pstmt.executeQuery();
		
	}
	/**
	 * 
	 * 删除数据后台
	 * @param stu
	 * @return
	 * @throws SQLException 
	 */
	public static int deleteData(StudentData stu) throws SQLException{
		String sql="delete from StudentData where num=?";
		int i = 0; 
		PreparedStatement pst = Dao.prepareStatement(sql);
		pst.setInt(1, stu.getNum());
		i=pst.executeUpdate(); 
		return i;
	}
	/**
	 * 更新数据后台
	 * @param 
	 * @return
	 * @throws SQLException
	 */
	public static int updateData(StudentData stu) throws SQLException {
		String sql="update   StudentData set name=?,age=?,sex=?,math=?,java=?,c=?,english=? where num=?";
		PreparedStatement pst=Dao.prepareStatement(sql);
		pst.setString(1, stu.getName());
		pst.setInt(2, stu.getAge());
		pst.setString(3, stu.getSex());
		pst.setFloat(4, stu.getMath());
		pst.setFloat(5, stu.getJava());
		pst.setFloat(6,stu.getC()) ;
		pst.setFloat(7, stu.getEnglish());
		pst.setInt(8, stu.getNum());
		return pst.executeUpdate();
		
	}
	/**
	 * 添加数据后台
	 * @param stu
	 * @return
	 * @throws SQLException
	 */
	public static  int addData(StudentData stu) throws SQLException {
		String sql="insert into StudentData values(null,?,?,?,?,?,?,?,?)";
		PreparedStatement pst=Dao.prepareStatement(sql);
		pst.setInt(1, stu.getNum());
		pst.setString(2, stu.getName());
		pst.setInt(3, stu.getAge());
		pst.setString(4, stu.getSex());
		pst.setFloat(5, stu.getMath());
		pst.setFloat(6, stu.getJava());
		pst.setFloat(7, stu.getC());
		pst.setFloat(8, stu.getEnglish());
		return pst.executeUpdate();
		
	}
	public static ResultSet search(StudentData stu) throws SQLException {
		String sql="select * from StudentData where num=?";
		PreparedStatement pstmt=Dao.prepareStatement(sql);
		pstmt.setInt(1, stu.getNum());
		return pstmt.executeQuery();
		
	}
  
	
}

程序中可能有些需要改进的地方，如果又发现，可以联系QQ：873634918，或者发送电子邮件到[email protected]，小白菜会及时纠正错误，这个项目主要是入门swing(GUI图新化编程)写的一个入门项目，只实现了增删改查等操作，还有很多功能有待实现。