java+mysql学生管理系统（附源码）

需要不用数据库的学生管理系统的小伙伴，请移步至：java学生管理系统(swing) (没用数据库，附源码）

事先声明：代码简易，只是实现基本的增删改查功能，大佬们轻点喷

相较于我写的没带数据库的代码，这次增加了几项功能：

• 有了注册的功能，将注册数据存入数据库
• 可以直接实现初步的增删改查（没带数据库的程序，有点缺胳膊断腿的感觉）

下面就是java代码，为了方便大家复制下来看看效果，我没分太多类

import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.reflect.Array;
import java.security.spec.ECField;
import java.sql.*;
import java.util.ArrayList;


public class Gradation  {
    private static JFrame jf,regis_jf;
    private static JPanel panel,regis_panel;
    private static JLabel jl,jl2,regis_j1,regis_j2;
    private static JTextField name,regis_name,regis_password;
    private static JPasswordField password;
    private static JButton jb,jb2,regis_jb,regis_jb2;

    private static Connection con;
    private static PreparedStatement sql,sql_2;
    private static ResultSet res;

    private static String user_name,user_name_2;  //用户登录注册的账号
    private static String pass_word,pass_word_2;  //用户登录注册的密码

    public Connection getConnection()
    {
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        try {
            con = DriverManager.getConnection("jdbc:mysql:"+"//127.0.0.1:3306/db1"
                    ,"root","root");                           //db1是你自己创建的数据库，表都在这里面，而一般教材都写的是test，所以不要照抄搬运

        } catch (SQLException e) {
            e.printStackTrace();
        }
        return con;
    }

    public static void main(String[] args) {

        jf = new JFrame("测试窗口1");

        jf.setBounds(300,200,300,150);
        jf.setLocationRelativeTo(null);
        jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        //绝对布局
        panel = new JPanel(null);

        jl = new JLabel("账户");
        jl.setBounds(10,10,200,18);

        name = new JTextField();
        name.setBounds(80,10,150,18);

        jl2 = new JLabel("密码");
        jl2.setBounds(10,50,200,18);

        password = new JPasswordField();
        password.setBounds(80,50,150,18);

        panel.add(jl);
        panel.add(name);
        panel.add(jl2);
        panel.add(password);

        //创建一个按钮，点击后获取密码框中输入的密码
        jb = new JButton("登录");
        jb.setBounds(80,80,60,18);
        jb.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                DengLu();
            }
        });
        panel.add(jb);


        jb2 = new JButton("注册");
        jb2.setBounds(170,80,60,18);
        jb2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                Register();
            }
        });
        panel.add(jb2);


        jf.setContentPane(panel);
        jf.setVisible(true);
    }

    public static void Register()
    {
        regis_jf = new JFrame("注册");

        regis_jf.setBounds(300,200,300,150);
        regis_jf.setLocationRelativeTo(null);
        regis_jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);


        //绝对布局
        regis_panel = new JPanel(null);

        regis_j1 = new JLabel("Account");
        regis_j1.setBounds(10,10,200,18);

        regis_name = new JTextField();
        regis_name.setBounds(80,10,150,18);

        regis_j2 = new JLabel("Passwords");
        regis_j2.setBounds(10,50,200,18);

        regis_password = new JTextField();
        regis_password.setBounds(80,50,150,18);

        regis_panel.add(regis_j1);
        regis_panel.add(regis_name);
        regis_panel.add(regis_j2);
        regis_panel.add(regis_password);


        regis_jb = new JButton("确定 ");
        regis_jb.setBounds(80,80,60,18);
        regis_jb.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                user_name = regis_name.getText();
                pass_word = regis_password.getText();
                try
                {
                    Gradation grad_2 = new Gradation();
                    con = grad_2.getConnection();
                    sql_2 = con.prepareStatement("insert into register (user_name,pass_word) values (?,?)");
                    sql_2.setString(1,user_name);
                    sql_2.setString(2,pass_word);
                    sql_2.execute();
                }
                catch (Exception e3)
                {
                    e3.printStackTrace();
                }
                JOptionPane.showMessageDialog(null,"信息注册成功");
                regis_jf.dispose();

            }
        });
        regis_panel.add(regis_jb);

        regis_jf.setContentPane(regis_panel);
        regis_jf.setVisible(true);

    }

    public static void DengLu()
    {
        try
        {
            Gradation grad = new Gradation();
            con = grad.getConnection();

            user_name_2 = name.getText();
            pass_word_2 = new String(password.getPassword());

            sql = con.prepareStatement("select user_name,pass_word from register where user_name = ? and pass_word = ?");
            sql.setString(1,user_name_2);
            sql.setString(2,pass_word_2);
            res = sql.executeQuery();

            if(name.getText().length() == 0||
                    new String (password.getPassword()).length() == 0)
            {
                JOptionPane.showMessageDialog(null,"信息为空");
            }
            else if(res.next())
            {
                new Demo();
                jf.dispose();     //先关闭第一个窗口
            }
            else
                JOptionPane.showMessageDialog(null,"登录失败，账户或密码错误");
        }
        catch (Exception e2)
        {
            e2.printStackTrace();
        }

    }


}

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这是第二段java代码

import javax.swing.*;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.security.spec.ECField;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;


public class Demo {
    private JFrame jf2;
    private JTextArea jTextArea; //显示信息的文本区域
    private File file;

    //contentPane是底层面板，其余都是加在它的上面
    private JPanel contentPane,found_panel,panel2,delete_panel,update_panel;

    private JLabel j1,j2,j3,j4,j_delete;    //新建操作的名称标签 + 删除操作的名称标签
    private JLabel j_up_name,j_new_name,j_new_num,j_new_age,j_new_major; //修改操作的名称标签
    private JTextField jT_1,jT_2,jT_3,jT_4,jT_delete;   //新建操作的输入框 + 删除操作的输入框
    private JTextField jT_up_name,jT_new_name,jT_new_num,jT_new_age,jT_new_major; //修改操作的输入框
    private JButton jb_1,jb_2,found_back,jb_del,j_update,del_back,update_back;

    private JMenuBar menuBar;
    private JMenu inforMenu,aboutMenu;
    private JMenuItem newMenItem,deleteMenItem,foundMenItem,changeMenItem,about_son;

    private static Connection cen;
    private static PreparedStatement prmen;
    private static ResultSet rls;

    private static String stu_name,stu_num,stu_age,stu_major; //所添加的学生信息
    private static String stu_name_del; //所要删除学生的姓名

    private static String stu_up_name,stu_up_newname,stu_up_newnum,stu_up_newage,stu_up_newmajor;

    public Demo() {

        //设置第二个窗口
        jf2 = new JFrame("LS");

        jf2.setSize(500, 300);
        jf2.setLocationRelativeTo(null);
        jf2.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        // 创建底部面板
        contentPane = new JPanel();

        // 创建“查询”所需面板
        found_panel = new JPanel();

        // 创建“新建”面板
        panel2 = new JPanel(new GridLayout(5,2));

        // 创建”删除“面板
        delete_panel = new JPanel(new GridLayout(1,3));

        // 创建”修改“面板
        update_panel = new JPanel(new GridLayout(6,2));

        // ”新建“面板中的“新建”内容
        j1 = new JLabel("姓名");
        jT_1 = new JTextField();


        j2 = new JLabel("学号");
        jT_2 = new JTextField();


        j3 = new JLabel("年龄");
        jT_3 = new JTextField();


        j4 = new JLabel("专业");
        jT_4 = new JTextField();

        panel2.add(j1);
        panel2.add(jT_1);
        panel2.add(j2);
        panel2.add(jT_2);
        panel2.add(j3);
        panel2.add(jT_3);
        panel2.add(j4);
        panel2.add(jT_4);

        jb_1 = new JButton("提交");

        jb_2 = new JButton("返回");

        panel2.add(jb_1);
        panel2.add(jb_2);


        // “查询"的页面
        jTextArea = new JTextArea();
        //jTextArea.setBounds(10,10,30,30);

        // 返回开始界面按钮
        found_back = new JButton("返回");
        //found_back.setBounds(20,100,20,20);

        found_panel.add(jTextArea);
        found_panel.add(found_back);


        /*
         * 创建一个菜单栏
         */
         menuBar = new JMenuBar();

        /*
         * 创建一级菜单
         */
        inforMenu = new JMenu("信息管理");
        aboutMenu = new JMenu("关于");

        // 一级菜单添加到菜单栏
        menuBar.add(inforMenu);
        menuBar.add(aboutMenu);

         newMenItem = new JMenuItem("新建");
         deleteMenItem = new JMenuItem("删除");
        changeMenItem = new JMenuItem("修改");
        foundMenItem = new JMenuItem("查询");
        about_son = new JMenuItem("再关于");

        // 向“信息管理”中添加子菜单
        inforMenu.add(newMenItem);
        inforMenu.add(deleteMenItem);
        inforMenu.add(changeMenItem);
        inforMenu.add(foundMenItem);

        aboutMenu.add(about_son);


        //删除操作的面板内容
        jT_delete = new JTextField();
        j_delete = new JLabel("姓名");
        jb_del = new JButton("删除");
        del_back = new JButton("返回");

        delete_panel.add(j_delete);
        delete_panel.add(jT_delete);
        delete_panel.add(jb_del);
        delete_panel.add(del_back);


        //修改操作的面板内容
        j_up_name = new JLabel("姓名");
        jT_up_name = new JTextField();

        j_new_name = new JLabel("新姓名");
        jT_new_name = new JTextField();

        j_new_num = new JLabel("新学号");
        jT_new_num = new JTextField();

        j_new_age = new JLabel("新年龄");
        jT_new_age = new JTextField();

        j_new_major = new JLabel("新专业");
        jT_new_major = new JTextField();

        j_update = new JButton("确定");
        update_back = new JButton("返回");

        update_panel.add(j_up_name);
        update_panel.add(jT_up_name);
        update_panel.add(j_new_name);
        update_panel.add(jT_new_name);
        update_panel.add(j_new_num);
        update_panel.add(jT_new_num);
        update_panel.add(j_new_age);
        update_panel.add(jT_new_age);
        update_panel.add(j_new_major);
        update_panel.add(jT_new_major);
        update_panel.add(j_update);
        update_panel.add(update_back);


        //添加事件监听
        Event_do();

        contentPane.add(menuBar);     //将整个JMenuBar加到contentPane上

        JLabel label = new JLabel("欢迎使用学生管理系统");
        label.setFont(new Font(Font.DIALOG,Font.BOLD,23));    //设置字体大小
        label.setForeground(Color.orange);        //设置字体颜色

        contentPane.add(label);

        jf2.setContentPane(contentPane);
        jf2.setVisible(true);

    }


    public void Event_do()
    {
        // 设置 "新建" 子菜单被点击的监听器
        newMenItem.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                contentPane.removeAll();
                contentPane.add(panel2);
                contentPane.validate();
                contentPane.repaint();
                jT_1.setText("");
                jT_2.setText("");
                jT_3.setText("");
                jT_4.setText("");

            }
        });

        // 设置 "删除" 子菜单被点击的监听器
        deleteMenItem.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                jT_delete.setText("");

                //主页面跳转至删除面板
                contentPane.removeAll();
                contentPane.add(delete_panel);
                contentPane.validate();
                contentPane.repaint();


            }
        });

        // 设置“删除面板”中“删除”的监听器
        jb_del.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                //获取文本框中数据
                stu_name_del = jT_delete.getText();

                try
                {
                    Gradation grad_3 = new Gradation();
                    cen = grad_3.getConnection();      //连接数据库

                    //首先查询数据库中是否有所要删除学生的信息
                    prmen = cen.prepareStatement("select stu_name from stu_info where stu_name = ?");
                    prmen.setString(1,stu_name_del);
                    rls = prmen.executeQuery();

                    if(jT_delete.getText().length() == 0)
                    {
                        JOptionPane.showMessageDialog(null,"信息为空");
                    }
                    //如果有要删除学生的信息
                    else if(rls.next())
                    {
                        //那么就删除他
                        prmen = cen.prepareStatement("delete from stu_info where stu_name = ?");
                        prmen.setString(1,stu_name_del);
                        prmen.executeUpdate();

                        JOptionPane.showMessageDialog(null,"删除成功");

                        //主页面跳转至主面板
                        contentPane.removeAll();
                        contentPane.add(menuBar);
                        contentPane.validate();
                        contentPane.repaint();
                    }
                    else
                        JOptionPane.showMessageDialog(null,"该生不存在");

                }
                catch (Exception e1)
                {
                    e1.printStackTrace();
                }

            }
        });

        // 设置“删除面板”中“返回”的监听器
        del_back.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                jT_delete.setText("");

                contentPane.removeAll();
                contentPane.add(menuBar);
                contentPane.validate();
                contentPane.repaint();
            }
        });

        // 设置 "修改" 子菜单被点击的监听器
        changeMenItem.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                //主页面跳转至修改面板
                contentPane.removeAll();
                contentPane.add(update_panel);
                contentPane.validate();
                contentPane.repaint();

                jT_up_name.setText("");
                jT_new_name.setText("");
                jT_new_num.setText("");
                jT_new_age.setText("");
                jT_new_major.setText("");

            }
        });

        // 设置“修改”面板中“确定”的监听器
        j_update.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                stu_up_name = jT_up_name.getText();
                stu_up_newname = jT_new_name.getText();
                stu_up_newnum = jT_new_num.getText();
                stu_up_newage = jT_new_age.getText();
                stu_up_newmajor = jT_new_major.getText();

                try
                {
                    Gradation grad_4 = new Gradation();
                    cen = grad_4.getConnection();      //连接数据库

                    //首先查询数据库中是否有所要修改学生的信息
                    prmen = cen.prepareStatement("select stu_name from stu_info where stu_name = ?");
                    prmen.setString(1,stu_up_name);
                    rls = prmen.executeQuery();

                    if(jT_up_name.getText().length() == 0)
                    {
                        JOptionPane.showMessageDialog(null,"请输入要删除的学生姓名");
                    }
                    else if(rls.next())
                    {
                        prmen = cen.prepareStatement(
                                "update stu_info set stu_name = ?,stu_num = ?,stu_age = ?,stu_major = ?" +
                                        " where stu_name = ?");
                        prmen.setString(1,stu_up_newname);
                        prmen.setString(2,stu_up_newnum);
                        prmen.setString(3,stu_up_newage);
                        prmen.setString(4,stu_up_newmajor);
                        prmen.setString(5,stu_up_name);

                        prmen.executeUpdate();

                        JOptionPane.showMessageDialog(null,"修改成功");

                        //主页面跳转至主面板
                        contentPane.removeAll();
                        contentPane.add(menuBar);
                        contentPane.validate();
                        contentPane.repaint();
                    }
                    else
                        JOptionPane.showMessageDialog(null,"您要修改的学生不存在");

                }
                catch(Exception e2)
                {
                    e2.printStackTrace();
                }


            }
        });

        // 设置“修改”面板中“返回”的监听器
        update_back.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                jT_up_name.setText("");
                jT_new_name.setText("");
                jT_new_num.setText("");
                jT_new_age.setText("");
                jT_new_major.setText("");

                contentPane.removeAll();
                contentPane.add(menuBar);
                contentPane.validate();
                contentPane.repaint();
            }
        });


        // 设置 "查询" 子菜单被点击的监听器
        foundMenItem.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                try
                {
                    Gradation grad_4 = new Gradation();
                    cen = grad_4.getConnection();      //连接数据库
                    prmen = cen.prepareStatement("select * from stu_info");    //查询数据库
                    rls = prmen.executeQuery();     //执行SQL语句

                    while (rls.next())
                    {
                        String stu_name_fo = rls.getString("stu_name");
                        String stu_num_fo = rls.getString("stu_num");
                        String stu_age_fo = rls.getString("stu_age");
                        String stu_major_fo = rls.getString("stu_major");

                        jTextArea.append(stu_name_fo +"      "+stu_num_fo+"      "+
                                stu_age_fo+"      "+stu_major_fo+"      \n");

                    }
                }
                catch (Exception eb1)
                {
                    eb1.printStackTrace();
                }


                contentPane.removeAll();
                contentPane.add(found_panel);
                contentPane.validate();
                contentPane.repaint();

            }
        });

        // “查询”界面的 “返回” 的监听器
        found_back.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                jTextArea.setText("");

                contentPane.removeAll();
                contentPane.add(menuBar);
                contentPane.validate();
                contentPane.repaint();
            }
        });

        // 新建的中的“提交”的监听事件
        jb_1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                //从输入框中获取数据
                stu_name = jT_1.getText();
                stu_num = jT_2.getText();
                stu_age = jT_3.getText();
                stu_major = jT_4.getText();

                //将获取的数据存入数据库
                try
                {
                    Gradation grad_2 = new Gradation();
                    cen = grad_2.getConnection();      //连接数据库
                    prmen = cen.prepareStatement("insert into stu_info(stu_name,stu_num,stu_age,stu_major) values(?,?,?,?) ");
                    prmen.setString(1,stu_name);
                    prmen.setString(2,stu_num);
                    prmen.setString(3,stu_age);
                    prmen.setString(4,stu_major);
                    prmen.execute();
                }
                catch (Exception exo_1)
                {
                    exo_1.printStackTrace();
                }

                //界面返回主页
                contentPane.removeAll();
                contentPane.add(menuBar);
                contentPane.validate();
                contentPane.repaint();

            }
        });

        // 新建的中的“返回”的监听事件
        jb_2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                contentPane.removeAll();
                contentPane.add(menuBar);
                contentPane.validate();
                contentPane.repaint();

            }
        });

        about_son.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(null,"仅供点击，请勿当真！");
            }
        });


    }

}

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以下是mysql的代码

# 建立注册表
CREATE TABLE register (
	id INT PRIMARY KEY AUTO_INCREMENT,
	user_name VARCHAR(20),  -- 账号
	pass_word VARCHAR(20)   -- 密码
	
);


# 建立学生信息表
CREATE TABLE stu_info (
	stu_name VARCHAR(10),   -- 姓名
	stu_num VARCHAR(20),    -- 学号
	stu_age INT,            -- 年龄
	stu_major VARCHAR(15)   -- 专业
);

后期还会更新更好的程序，还希望大家给个赞，嘻嘻！

你的鼓励是我进步的动力