java（swing）+mysql实现学生信息管理系统

数据库：

   			DROP DATABASE IF EXISTS `myproject`;
			CREATE DATABASE myproject DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
			USE ABC;
			SET NAMES utf8mb4;
			SET FOREIGN_KEY_CHECKS = 0;
			DROP TABLE IF EXISTS `student`;
			CREATE TABLE `student` (
  				`id` varchar(36) NOT NULL,
  				`name` varchar(36) NOT NULL,
  				`age` varchar(36) NOT NULL
				) ENGINE=InnoDB DEFAULT CHARSET=utf8;
			SET FOREIGN_KEY_CHECKS = 1;

程序代码：

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
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 javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.table.AbstractTableModel;
import javax.swing.text.BadLocationException;

public class Test extends JFrame {
	private static final long serialVersionUID = 1L;
	private JTable table;
	private JPanel panel;
	private JScrollPane scrollpane;
	private JButton button1, button2, button3;
	private JTextArea text1, text2, text3;
	private List stu;

	public Test() throws BadLocationException, SQLException {
		super("学生信息");
		this.setSize(500, 340);
		this.add(getJScrollPane(stu), BorderLayout.CENTER);
		this.add(getJPanel(), BorderLayout.SOUTH);
		this.setResizable(true);
		this.setLocation(300, 300);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

	// 设置JScrollPane方法
	private JScrollPane getJScrollPane(List stu) throws SQLException {
		if (scrollpane == null) {
			scrollpane = new JScrollPane();
			scrollpane.setViewportView(getJTable(stu));
		}
		return scrollpane;
	}

	// 设置JPanel方法
	private JPanel getJPanel() {
		if (panel == null) {
			panel = new JPanel();
			panel.setLayout(new GridLayout(2, 3));
			text1 = new JTextArea();
			text2 = new JTextArea();
			text3 = new JTextArea();
			button1 = new JButton("添加");
			button2 = new JButton("删除");
			button3 = new JButton("更新");
			button1.addActionListener(new insert());
			button2.addActionListener(new delete());
			button3.addActionListener(new update());
			text1.setBorder(BorderFactory.createLineBorder(Color.gray, 2));
			text2.setBorder(BorderFactory.createLineBorder(Color.gray, 2));
			text3.setBorder(BorderFactory.createLineBorder(Color.gray, 2));
			text1.setFont(new Font("宋体", Font.BOLD, 16));
			text2.setFont(new Font("宋体", Font.BOLD, 16));
			text3.setFont(new Font("宋体", Font.BOLD, 16));
			text1.setText("id");
			text2.setText("name");
			text3.setText("age");
			panel.add(text1);
			panel.add(text2);
			panel.add(text3);
			panel.add(button1);
			panel.add(button2);
			panel.add(button3);

		}
		return panel;

	}

	// 设置Jtable方法
	private void setJTable(JTable table) {
		table.setFont(new Font("宋体", Font.BOLD, 18));
		table.setRowHeight(30);
	}

	// 获取Jtable对象方法（该方法具体就是获得jtable对象的时候 一并从数据取出学生信息并放入Jtable表格中）
	private JTable getJTable(List stu) throws SQLException {
		if (table == null) {
			JDBCDaoImpl jdbc = new JDBCDaoImpl();
			ResultSet rs = jdbc.search();
			stu = select(rs);
			jdbc.closeConnection();
			table = new JTable(new Table(stu));
			setJTable(table);
		}
		return table;
	}

	// 设置学生信息方法（该方法是用户增加 删除 更新用户操作的具体实现方法 包含了完整性检查）
	private Student setStu() {
		if (text1.getText().equals("") || text2.getText().equals("") || text3.getText().equals("")) {
			return null;
		} else {
			Student sd = new Student();
			sd.setId(text1.getText());
			sd.setName(text2.getText());
			sd.setAge(text3.getText());
			return sd;

		}

	}

	// 重置输入框为空
	private void resetText() {
		text1.setText("");
		text2.setText("");
		text3.setText("");
	}

	// 刷新学生信息方法（该方法是重新读取数据库学生的信息 然后返回一个学生的集合 用于刷新Jtable表格对象中的数据）
	private List select(ResultSet rs) throws SQLException {
		List st = new ArrayList();
		while (rs.next()) {
			Student s = new Student();
			s.setId(rs.getString(1));
			s.setName(rs.getString(2));
			s.setAge(rs.getString(3));
			st.add(s);
		}
		return st;

	}

	// 添加按钮-监听器（该方法是对添加按钮实现的具体方法 ）
	class insert implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			stu = new ArrayList();
			Student sd = new Student();
			JDBCDaoImpl jdbc = new JDBCDaoImpl();
			sd = setStu();
			if (sd != null) {
				jdbc.insert(sd);
				ResultSet rs = jdbc.search();
				try {
					stu = select(rs);
				} catch (SQLException e1) {
					e1.printStackTrace();
				}
				jdbc.closeConnection();
				JTable table = new JTable(new Table(stu));//新建一个Jtable 对象 用来盛放增加后的学生信息
				setJTable(table);//设置Jtable信息
				Test.this.scrollpane.setViewportView(table);//把Jtable设置到Panel
				resetText();
			} else {
				JOptionPane.showMessageDialog(Test.this, "输入数据不完整");

			}

		}

	}

	// 删除按钮-监听器（该方法是对删除按钮实现的具体方法）
	class delete implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			stu = new ArrayList();
			Student sd = new Student();
			JDBCDaoImpl jdbc = new JDBCDaoImpl();
			sd = setStu();
			if (sd != null) {
				jdbc.delete(sd);
				ResultSet rs = jdbc.search();
				try {
					stu = select(rs);
				} catch (SQLException e1) {
					e1.printStackTrace();
				}
				jdbc.closeConnection();
				JTable table = new JTable(new Table(stu));//新建一个Jtable 对象 用来盛放增加后的学生信息
				setJTable(table);//设置Jtable信息
				Test.this.scrollpane.setViewportView(table);//把Jtable设置到Panel
				resetText();
			} else {
				JOptionPane.showMessageDialog(Test.this, "输入数据不完整");

			}

		}

	}

	// 更新按钮-监听器（该方法是对更新按钮实现的具体方法）
	class update implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			stu = new ArrayList();
			Student sd = new Student();
			JDBCDaoImpl jdbc = new JDBCDaoImpl();
			sd = setStu();
			if (sd != null) {
				jdbc.update(sd);
				ResultSet rs = jdbc.search();
				try {
					stu = select(rs);
				} catch (SQLException e1) {
					e1.printStackTrace();
				}
				jdbc.closeConnection();
				JTable table = new JTable(new Table(stu));//新建一个Jtable 对象 用来盛放增加后的学生信息
				setJTable(table);//设置Jtable信息
				Test.this.scrollpane.setViewportView(table);//把Jtable设置到Panel
				resetText();
			} else {
				JOptionPane.showMessageDialog(Test.this, "输入数据不完整");

			}

		}

	}

	// Student类 （用于封装数据信息和数据库表进行映射）
	public class Student {
		// 学生的id name age信息
		private String id;
		private String name;
		private String age;

		// get&set方法
		public String getId() {
			return id;
		}

		public void setId(String id) {
			this.id = id;
		}

		public String getName() {
			return name;
		}

		public void setName(String name) {
			this.name = name;
		}

		public String getAge() {
			return age;
		}

		public void setAge(String age) {
			this.age = age;
		}
	}

	// JTable 表模式类 （JTable对象 初始化的时候通过 这个Table获取表格的行数、列数、列标题、以及每个单元格存放的数据 具体使用原因放在开头的备注了）
	public class Table extends AbstractTableModel {
		List stu = new ArrayList();

		public Table(List s) {
			this.stu = s;

		}
		public List getStu() {
			return stu;
		}

		public void setStu(List stu) {
			this.stu = stu;
		}

		@Override
		// 获取行数
		public int getRowCount() {
			return stu.size();
		}

		@Override
		// 获取列数
		public int getColumnCount() {
			// TODO Auto-generated method stub
			return 3;
		}

		@Override
		public boolean isCellEditable(int rowIndex, int columnIndex) {
			return true;
		}

		@Override
		// 获取列名字
		public String getColumnName(int col) {
			String res = "";
			switch (col) {
			case 0:
				res = "ID";
				break;
			case 1:
				res = "Name";
				break;
			case 2:
				res = "Age";
				break;
			default:
				break;
			}
			return res;
		}

		@Override
		// 获取具体值
		public Object getValueAt(int rowIndex, int columnIndex) {
			// TODO Auto-generated method stub
			Object res = "";
			Student temp = stu.get(rowIndex);
			switch (columnIndex) {
			case 0:
				res = temp.getId();
				break;
			case 1:
				res = temp.getName();
				break;
			case 2:
				res = temp.getAge();
				break;
			default:
				break;
			}
			return res;
		}

	}

	// JDBCDAO类 配置连接数据的信息，链接释放操作和基本增删改查操作
	public class JDBCDaoImpl {
		String driver = "com.mysql.jdbc.Driver";
		String url = "jdbc:mysql://localhost:3306/test1?useUnicode=true&characterEncoding=utf-8&useSSL=false";
		String user = "root";
		String passwd = "123456";
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;

		// 数据库连接开始
		public Connection getConnection() {
			try {
				Class.forName("com.mysql.jdbc.Driver");
				conn = DriverManager.getConnection(url, user, passwd);
				stmt = conn.createStatement();
			} catch (Exception e) {
				e.printStackTrace();
			}
			return conn;
		}

		// 数据库连接释放
		public void closeConnection() {
			if (rs != null) {
				try {
					rs.close();
					stmt.close();
					conn.close();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

			if (rs == null) {
				try {
					stmt.close();
					conn.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}
		}

		// 查找操作
		public ResultSet search() {
			getConnection();
			try {
				String sql = "SELECT * FROM student";
				rs = stmt.executeQuery(sql);
			} catch (SQLException e) {
				e.printStackTrace();
			}
			return rs;
		}

		// 添加操作
		public void insert(Student sd) {
			// TODO Auto-generated method stub
			getConnection();
			try {
				String sql = "INSERT INTO student(id,name,age)" + "VALUES('" + sd.getId() + "','" + sd.getName() + "','"
						+ sd.getAge() + "')";
				int count = stmt.executeUpdate(sql);
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}

		// 删除操作
		public void delete(Student sd) {
			// TODO Auto-generated method stub
			getConnection();
			try {
				String sql = "DELETE FROM student WHERE id = '" + sd.getId() + "'";
				int count = stmt.executeUpdate(sql);
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}

		// 更新操作
		public void update(Student sd) {
			// TODO Auto-generated method stub
			getConnection();
			try {
				String sql = "UPDATE student SET name='" + sd.getName() + "',age= '" + sd.getAge() + "'WHERE id = '"
						+ sd.getId() + "'";
				int count = stmt.executeUpdate(sql);
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}

	}

	// main 方法
	public static void main(String[] args) throws BadLocationException, SQLException {
		new Test().setVisible(true);

	}
}