求java+MySQL编写的电子书店管理系统 eclipse环境 最好能直接运行

主界面：menu.java

import javax.swing.*;import java.awt.event.*;import java.sql.*;import java.awt.*;public class menu extends JFrame implements ActionListener { JMenuBar menubar = new JMenuBar(); JMenu meArray[] = { new JMenu("常用功能"), new JMenu("个人中心"), new JMenu("系统维护"), new JMenu("帮助") }; JMenuItem item[] = { new JMenuItem("浏览图书",new ImageIcon("image/browse.jpg")), new JMenuItem("查找图书",new ImageIcon("image/query.jpg")), new JMenuItem("我的空间",new ImageIcon("image/user.jpg")),new JMenuItem("登录",new ImageIcon("image/login.jpg")), new JMenuItem("注册",new ImageIcon("image/key.jpg")), new JMenuItem("后台管理",new ImageIcon("image/admin.jpg")), new JMenuItem("帮助信息",new ImageIcon("image/help.jpg")) }; gaintb jsp; JScrollPane JSP; JPanel jpl; JLabel bgimg=new JLabel(new ImageIcon("image\\MAIN.jpg"));//开始界面 String namep=null; CardLayout card=new CardLayout(); JPanel cardPanel=new JPanel(); JLabel titback=new JLabel("选择还书名称"); JButton suback=new JButton("还书"); JTextField bid=new JTextField(); String sql=""; connectdt jdbc = new connectdt();//连接数据库类 Connection conn = jdbc.conn; Statement stmt = jdbc.stmt; public menu(String p1) { namep=p1; init(); cardPanel.add(bgimg); add(cardPanel); jsp = new gaintb("books"); JSP = jsp.rjsp(); JSP.setBounds(0, 0, 800, 550); cardPanel.add(JSP,"browse"); if(namep!=null){ zone cp6=new zone(namep); jpl=cp6.gainpl(); suback.setBounds(580, 440, 80, 30); titback.setBounds(400, 440, 100, 30); bid.setBounds(500, 440, 50, 30); jpl.add(suback); jpl.add(titback); jpl.add(bid); suback.addActionListener(this); bid.addActionListener(this); cardPanel.add(jpl,"zone"); card.show(cardPanel,"zone"); if(cp6.gainfine()>0){ JOptionPane.showMessageDialog(null, "请先交纳罚款"); return; } } setLocation(250, 70); setVisible(true); setSize(800, 600); setDefaultCloseOperation(EXIT_ON_CLOSE); setResizable(false); } public void init() { cardPanel.setLayout(card); setTitle("图书管理系统"); meArray[0].add(item[0]); meArray[0].add(item[1]); meArray[1].add(item[2]); meArray[1].add(item[3]); meArray[1].add(item[4]); meArray[2].add(item[5]); meArray[3].add(item[6]); for (int i = 0; i < item.length; i++) { item[i].addActionListener(this); } for (int i = 0; i < meArray.length; i++) { menubar.add(meArray[i]); } setJMenuBar(menubar); } public void actionPerformed(ActionEvent e) { try { if (e.getSource() == item[0]) {//浏览图书 card.show(cardPanel,"browse"); } else if (e.getSource() == item[1]) {//查找图书 new select_borrow(namep); } else if (e.getSource() == item[2]) {//空间 if(namep==null){ JOptionPane.showMessageDialog(null, "您还未登录呢"); return; }else{ card.show(cardPanel,"zone"); } } else if (e.getSource() == item[3]) {//登录 new login("readers","name","code","用户登录"); dispose(); }else if(e.getSource()==item[4]){//注册 new user_regist(); }else if(e.getSource()==item[5]){//后台 new login("admindt","username","password","管理员登录"); dispose(); } else if(e.getSource()==item[6]){//帮助 new menu_help(); }else if(e.getSource()==suback){//还书 String temp=bid.getText(); if(temp.equals("")){ JOptionPane.showMessageDialog(null, "输入不能为空"); return; } sql="select * from borrow where book='"+temp+"'"; ResultSet rs = stmt.executeQuery(sql); if(!rs.next()){ JOptionPane.showMessageDialog(null, "输入不存在"); return; } sql="delete from borrow where book='"+temp+"'"; stmt.executeUpdate(sql); sql="update books set STOCK=STOCK+1 where TITLE='"+temp+"';"; stmt.executeUpdate(sql); sql=""; JOptionPane.showMessageDialog(null, "还书成功"); } } catch (Exception ee) { ee.printStackTrace(); } }}

上面是主菜单的完整的代码着重介绍布局思想和动作监听

在public menu(){ }里面

setLocation(250, 70);//设置位置，250是从屏幕左边开始向右移动250像素，70是从上往下移动70像素setVisible(true);//设置窗口可见setSize(800, 600);//设置窗口大小为800宽600高setDefaultCloseOperation(EXIT_ON_CLOSE);//设置关闭窗口为关闭所有setResizable(false);//不可调整窗口大小

打字不易，望采纳，谢谢