Java+Mysql+学生信息管理系统的实现

开发语言：java； 开发环境：Mysql, java； 开发工具：eclipse
基于Java swing+MySQL实现学生信息管理系统：主要实现JDBC对学生信息进行增删改查。
1.Student类(学生的基本信息)

package com.zhang.Student;

public class Student {
	public String num;//学号
	public String name;//姓名
	public String grade;//成绩
	public Student(String num,String name,String grade ) {
		this.num = num;
		this.name = name;
		this.grade = grade;
	}
}

2.StudentJFrame类(简单的图形界面–真丑）

package com.zhang.Student;

import java.awt.Container;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class StudentJFrame {
	public void setJFrame(){
		/*
		 * 设置窗口基本样式
		 */
		JFrame jframe = new JFrame("学生管理系统");
		jframe.setSize(500, 382);
		jframe.setLocation(100, 100);
		jframe.setLayout(null);
		/*
		 * 创建容器增加按钮
		 */
		Container c = jframe.getContentPane();
   
		JButton b =new JButton("增加");
		JButton b1 =new JButton("删除");
		JButton b2 =new JButton("修改");
		JButton b3 =new JButton("查看");
		ImageIcon image = new ImageIcon("images/school.jpg");
		final JLabel l = new JLabel();
		l.setIcon(image);
		l.setBounds(0,0,image.getIconWidth(),image.getIconHeight());
		JLabel l1 = new JLabel("欢迎来到学生管理系统");
		l1.setBounds(100, 0, 400, 180);
		Font font = new Font("楷体",Font.BOLD,30);
		l1.setFont(font);
		b.setBounds(120, 250, 60, 30);
		b1.setBounds(190, 250, 60, 30);
		b2.setBounds(260, 250, 60, 30);
		b3.setBounds(330, 250, 60, 30);
		
		b.addActionListener(new ActionListener() {
			
			@Override
			public void actionPerformed(ActionEvent e) {
				new StudentJDialogAdd(jframe).setVisible(true);;	
			}
		});
		b1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				new StudentJDialogDelete(jframe).setVisible(true);
			}
		});
		b2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				new StudentJDialogUpdate(jframe).setVisible(true);
			}
		});
		b3.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				new StudentJDialogSelect(jframe).setVisible(true);
			}
		});
		c.add(b);
		c.add(b1);
		c.add(b2);
		c.add(b3);
		c.add(l1);
		c.add(l);
		/*
		 * 设置窗口可见与关闭方式
		 */
		jframe.setVisible(true);
		jframe.setDefaultCloseOperation(jframe.EXIT_ON_CLOSE);
	}
	public static void main(String[] args) {
		StudentJFrame f =new StudentJFrame();
		f.setJFrame();
	}
}

3.StudentDAO接口(实现JDBC对数据库进行增删改查）

package com.zhang.Student;

public interface StudentDAO {
	public void add(Student student);
	public void delete(Student student);
	public void update(Student student);
	public void select(Student student);
}

4.StudentJDBC类(连接数据库对学生信息进行增删改查)

package com.zhang.Student;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class StudentJDBC implements StudentDAO{
	public StudentJDBC() {
		try {
			Class.forName("com.mysql.jdbc.Driver");
			System.out.println("驱动加载成功");
		} catch (ClassNotFoundException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}
	public Connection getConnection() throws SQLException {
		System.out.println("数据库连接成功");
		return DriverManager.getConnection("jdbc:mysql://localhost/student","root","123456");
	}
	
	public void add(Student student) {
		String sql = "insert into student values(?,?,?)";
		try(Connection c = getConnection(); PreparedStatement ps = c.prepareStatement(sql)) 
		{
			ps.setString(1, student.num);
			ps.setString(2, student.name);
			ps.setString(3, student.grade);
			ps.execute();
			System.out.println("数据添加成功");
		} catch (SQLException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}
	@Override
	public void delete(Student student) {
		
	}
	@Override
	public void update(Student student) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void select(Student student) {
		
	}
	
}

5.数据库信息

6.StudentJDialogAdd类(连接数据库增加学生信息)

package com.zhang.Student;

import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
public class StudentJDialogAdd extends JDialog{
	public static int  rowCount=0;
	public int columnCount = 3;;//设置初始行与列
	String num[] = new String[100];
	String name[] = new String[100];
	String grade[] = new String[100];
	public String[][] newtableValues = new String[100][3];
	public StudentJDialogAdd(JFrame jframe) {
			/*
			 * 设置简单的窗口格式
			 */
			super(jframe,"增加",true);
			setBounds(200, 200, 400, 400);
			Container c =getContentPane();
			c.setLayout(null);
			/*
			 * 设置表格内容
			 */
			String columnNames[] = new String[]{"学号","姓名","成绩"};
			String tableValues[][] = new String[0][3];
			DefaultTableModel tablemodel = new DefaultTableModel(tableValues,columnNames);
			JTable table = new JTable(tablemodel);
			table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
			 JButton b= new JButton("增加");
			 JButton b1= new JButton("删除");
			 JButton b2= new JButton("保存");
			 b.setBounds(100, 200, 60, 30);
			 b1.setBounds(170, 200, 60, 30);
			 b2.setBounds(240, 200, 60, 30);
			c.add(b);
			c.add(b1);
			c.add(b2);
			JScrollPane js = new JScrollPane(table);
			 b.addActionListener(new ActionListener() {
				
				public void actionPerformed(ActionEvent e) {
					js.setVisible(true);
					String []newdata = {""};
					tablemodel.addRow(newdata);	 
					rowCount++;
				}
			});
			b1.addActionListener(new ActionListener() {
				
				@Override
				public void actionPerformed(ActionEvent e) {
					int selectedRow = table.getSelectedRow();
					if(selectedRow!=-1) {
						tablemodel.removeRow(selectedRow);
						rowCount--;
					}
				}
			});
			 b2.addActionListener(new ActionListener() {
				
				@Override
				public void actionPerformed(ActionEvent e) {
					
					String newtableValues[][] = new String[rowCount][3]; 
					 for(int i=0; i

7.StudentJDialogDelete类(连接数据库删除学生信息）

package com.zhang.Student;

import java.awt.Container;
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.Statement;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
public class StudentJDialogDelete extends JDialog{
	 int i=0,j=0;
	 int count=0;
	 int selectedRow;
	 String selected;
	public StudentJDialogDelete(JFrame jframe) {
		super(jframe,"删除",true);
		setBounds(200, 200, 400, 400);
		Container c =getContentPane();
		c.setLayout(null);
		String columnNames[] = new String[]{"学号","姓名","成绩"};
		String tableValues[][] =new String[100][3];
		try {
			Class.forName("com.mysql.jdbc.Driver");
			System.out.println("驱动加载成功");
		} catch (ClassNotFoundException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		try(Connection connection= DriverManager.getConnection("jdbc:mysql://localhost/student","root","123456");
				Statement s = connection.createStatement();
			)
		{
			String sql = "select num from student";
			String sql1 = "select name from student";
			String sql2 = "select grade from student";
			String sql3 = "select count(num) from student";
			ResultSet rs =s.executeQuery(sql);
			while(rs.next()) {
				tableValues[i][0] = rs.getString("num");	
				i++;
			}
			i=0;
			ResultSet rs1 =s.executeQuery(sql1);
			while(rs1.next()) {
				
				tableValues[i][1] = rs1.getString("name");	
				i++;
			}
			i=0;
			ResultSet rs2 =s.executeQuery(sql2);
			while(rs2.next()) {
				tableValues[i][2] = rs2.getString("grade");	
				i++;
			}	
			ResultSet rs3=s.executeQuery(sql3);
			while(rs3.next()) {
				count = rs3.getInt("count(num)");
			}	
		} catch (SQLException e) {
			// TODO: handle exception
		}
		String newtableValues[][] = new String[count+1][3];
		for(i=0 ;i

8.StudentJDialogUpdate(连接数据库修改学生信息)

package com.zhang.Student;

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.swing.JButton;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
public class StudentJDialogUpdate extends JDialog{
	 int i=0,j=0;
	 int count=0;
	 int selectedRow;
	 int selectColumn;
	 String selected;
	 String selectednum;
	public StudentJDialogUpdate(JFrame jframe){
		super(jframe,"修改",true);
		setBounds(200, 200, 400, 400);
		Container c =getContentPane();
		c.setLayout(null);
		String columnNames[] = new String[]{"学号","姓名","成绩"};
		String tableValues[][] =new String[100][3];
		try {
			Class.forName("com.mysql.jdbc.Driver");
			System.out.println("驱动加载成功");
		} catch (ClassNotFoundException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		try(Connection connection= DriverManager.getConnection("jdbc:mysql://localhost/student","root","123456");
				Statement s = connection.createStatement();
			)
		{
			String sql = "select num from student";
			String sql1 = "select name from student";
			String sql2 = "select grade from student";
			String sql3 = "select count(num) from student";
			ResultSet rs =s.executeQuery(sql);
			while(rs.next()) {
				tableValues[i][0] = rs.getString("num");	
				i++;
			}
			i=0;
			ResultSet rs1 =s.executeQuery(sql1);
			while(rs1.next()) {
				
				tableValues[i][1] = rs1.getString("name");	
				i++;
			}
			i=0;
			ResultSet rs2 =s.executeQuery(sql2);
			while(rs2.next()) {
				tableValues[i][2] = rs2.getString("grade");	
				i++;
			}	
			ResultSet rs3=s.executeQuery(sql3);
			while(rs3.next()) {
				count = rs3.getInt("count(num)");
			}	
		} catch (SQLException e) {
			// TODO: handle exception
		}
		String newtableValues[][] = new String[count+1][3];
		for(i=0 ;i

9.StudentJDialogSelect(连接数据库查看学生信息)

package com.zhang.Student;

import java.awt.Container;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
public class StudentJDialogSelect extends JDialog{
	 int i=0,j=0;
	 int count=0;
	 int selectedRow;
	 String selected;
	public StudentJDialogSelect(JFrame jframe){
		super(jframe,"查看",true);
		setBounds(200, 200, 400, 400);
		Container c =getContentPane();
		c.setLayout(null);
		String columnNames[] = new String[]{"学号","姓名","成绩"};
		String tableValues[][] =new String[100][3];
		try {
			Class.forName("com.mysql.jdbc.Driver");
			System.out.println("驱动加载成功");
		} catch (ClassNotFoundException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		try(Connection connection= DriverManager.getConnection("jdbc:mysql://localhost/student","root","123456");
				Statement s = connection.createStatement();
			)
		{
			String sql = "select num from student";
			String sql1 = "select name from student";
			String sql2 = "select grade from student";
			String sql3 = "select count(num) from student";
			ResultSet rs =s.executeQuery(sql);
			while(rs.next()) {
				tableValues[i][0] = rs.getString("num");	
				i++;
			}
			i=0;
			ResultSet rs1 =s.executeQuery(sql1);
			while(rs1.next()) {
				
				tableValues[i][1] = rs1.getString("name");	
				i++;
			}
			i=0;
			ResultSet rs2 =s.executeQuery(sql2);
			while(rs2.next()) {
				tableValues[i][2] = rs2.getString("grade");	
				i++;
			}	
			ResultSet rs3=s.executeQuery(sql3);
			while(rs3.next()) {
				count = rs3.getInt("count(num)");
			}	
		} catch (SQLException e) {
			// TODO: handle exception
		}
		String newtableValues[][] = new String[count+1][3];
		for(i=0 ;i

历时一周写完–(外加自闭一天)