Java入门教程之图书管理系统（由简入繁）(七)

作者：AlexTan

E-mail: [email protected]

更新日志：

1. 修改 Operator.java 文件，Operator.java文件里将无任何输出代码，把从数据库里取出来的数据全放到ArrayList里，方便传给UI界面。此处修改使整个程序更符合MVC编程思想。

2. 给图书管理系统程序加上java的UI界面（ps:比较丑，但功能上基本实现了），java界面是通过用windowbuilder做的，怎么下的这里就不详细阐述了( 安装教程：http://blog.csdn.net/powmxypow/article/details/11553395 )。目前暂无什么BUG，如果有，欢迎留言。

目录结构：

Book.java与Database.java与前面没有任何变化，MainClass.java文件对图形界面来说没有用，所以这里就不贴这三个文件的代码了。

Operator.java:

package control;

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

import jdbc.Database;
import model.Book;

public class Operator {
	
	public static  int clearKey = 12345678;
	
	public ArrayList<Book> getBookList()
	{
		ArrayList<Book> booklist = new ArrayList<Book>();
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		//3.通过数据库的连接操作数据库，实现增删改查
		try {
			conn = Database.getConnection();
			stmt = conn.createStatement();
			rs = stmt.executeQuery("select id,bookname,author,price from book");//选择import java.sql.ResultSet;
			while(rs.next()){//如果对象中有数据，就会循环打印出来
				String bookname = rs.getString("bookname");
				String author = rs.getString("author");
				float price = rs.getFloat("price");
				int ID = rs.getInt("id");
				Book book = new Book(ID,bookname,author,price);
				booklist.add(book);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			Database.close(conn, stmt, rs);
		}
		return booklist;
	}
	
	public boolean addBook(String bookname,String author,float price)
	{
		Connection conn = null;
		Statement stmt = null;
		try {
			conn = Database.getConnection();
			stmt = conn.createStatement();
			String sql = "insert into book(bookname,author,price) values('"+bookname+"','"+author+"',"+price+")";
			//System.out.println(sql);
			stmt.execute(sql);
			return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return false;
		} finally {
			Database.close(conn, stmt);
		}
	}
	
	public boolean deleteBook(int id,String bookname)
	{
		Connection conn = null;
		Statement stmt = null;
		try {
			conn = Database.getConnection();
			stmt = conn.createStatement();
			String sql;
			if(id != -1)
			{
				sql = "delete from book where id ="+id;
			}
			else
			{
				sql = "delete from book where bookname ='"+bookname+"'";
			}
			stmt.execute(sql);
			return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return false;
		} finally {
			Database.close(conn, stmt);
		}
	}
	
	public boolean changeBoo(int id,String bookname,String changename)
	{
		Connection conn = null;
		Statement stmt = null;
		try {
			conn = Database.getConnection();
			stmt = conn.createStatement();
			String sql;
			if (id != -1)
			{
				sql = "update book set bookname='"+changename+"'"+" where id="+id;
				//System.out.println(sql);
			}
			else
			{
				sql = "update book set bookname='"+changename+"'"+" where bookname='"+bookname+"'";
			}
			stmt.execute(sql);
			return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return false;
		} finally {
			Database.close(conn,stmt);
		}
	}
	
	public ArrayList<Book> findBoo(int id,String bookname,String author,String dimname,float minprice,float maxprice)
	{
		ArrayList<Book> booklist = new ArrayList<Book>();
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		try {
			conn = Database.getConnection();
			stmt = conn.createStatement();
			String sql;
			if (id != -1)
			{
				sql = "select id,bookname,author,price from book"+" where id="+id;
				//System.out.println(sql);
			}
			else if(bookname != null)
			{
				sql = "select id,bookname,author,price from book"+" where bookname='"+bookname+"'";
			}
			else if(author != null)
			{
				sql = "select id,bookname,author,price from book"+" where author='"+author+"'";
			}
			else if(dimname != null)
			{
				sql = "select id,bookname,author,price from book"+" where bookname like'%"+dimname+"%'";
			}
			else if(maxprice != 0)
			{
				sql = "select id,bookname,author,price from book where price>="+minprice+" and price<="+maxprice;
			}
			else
			{
				System.out.println("出现未知错误，请联系管理员！");
				sql="";
			}
			rs = stmt.executeQuery(sql);
			while(rs.next()){//如果对象中有数据，就会循环打印出来
				String bookName = rs.getString("bookname");
				String Author = rs.getString("author");
				float Price = rs.getFloat("price");
				int ID = rs.getInt("id");
				Book book = new Book(ID,bookName,Author,Price);
				booklist.add(book);
			}
			/*
			if(rs.next())
			{
				System.out.println("查找成功！您查找的结果为：\n");
				do{//如果对象中有数据，就会循环打印出来
					System.out.println("编号："+rs.getInt("id")+" 书名："+rs.getString("bookname")+",作者："+rs.getString("author")+",价格："+rs.getFloat("price"));
				}while(rs.next());
			}
			else
				System.out.println("未查找到您想要的图书！");
			*/
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			Database.close(conn, stmt,rs);
		}
		return booklist;
	}
	
	public ArrayList<Book> printAllbook()
	{
		ArrayList<Book> booklist = new ArrayList<Book>();
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		//3.通过数据库的连接操作数据库，实现增删改查
		try {
			conn = Database.getConnection();
			stmt = conn.createStatement();
			rs = stmt.executeQuery("select id,bookname,author,price from book");//选择import java.sql.ResultSet;
			while(rs.next()){//如果对象中有数据，就会循环打印出来
				String bookName = rs.getString("bookname");
				String Author = rs.getString("author");
				float Price = rs.getFloat("price");
				int ID = rs.getInt("id");
				Book book = new Book(ID,bookName,Author,Price);
				booklist.add(book);
			}
			/*
			if(rs.next())
			{
				do{//如果对象中有数据，就会循环打印出来
					System.out.println("编号："+rs.getInt("id")+" 书名："+rs.getString("bookname")+",作者："+rs.getString("author")+",价格："+rs.getFloat("price"));
				}while(rs.next());
			}
			else
			{
				System.out.println("图书库为空，请添加图书！");
			}
			*/
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			Database.close(conn, stmt, rs);
		}
		return booklist;
	}
	
	public boolean clearBook()
	{
		Connection conn = null;
		Statement stmt = null;
		try {
			conn = Database.getConnection();
			stmt = conn.createStatement();
			String sql = "truncate table book";
			stmt.execute(sql);
			return true;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return false;
		} finally {
			Database.close(conn, stmt);
		}
	}
}

MenuUI.java:

package ui;

import java.awt.EventQueue;

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

import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;


public class MenuUI extends JFrame {

	private JPanel contentPane;
	public static int choice;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					MenuUI frame = new MenuUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public MenuUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("欢迎...");
		label.setBounds(145, 0, 81, 21);
		contentPane.add(label);
		
		JButton addButton = new JButton("增加图书");
		addButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				AddUI addui = new AddUI();
				addui.setVisible(true);
				MenuUI.this.dispose();
			}
		});
		addButton.setBounds(110, 25, 123, 29);
		contentPane.add(addButton);
		
		JButton deleteButton = new JButton("删除图书");
		deleteButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				DeleteUI delete = new DeleteUI();
				delete.setVisible(true);
				MenuUI.this.dispose();
			}
		});
		deleteButton.setBounds(110, 56, 123, 29);
		contentPane.add(deleteButton);
		
		JButton button_1 = new JButton("修改图书");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				ChangeUI change = new ChangeUI();
				change.setVisible(true);
				MenuUI.this.dispose();
			}
		});
		button_1.setBounds(110, 90, 123, 29);
		contentPane.add(button_1);
		
		JButton button_2 = new JButton("查询图书");
		button_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				FindmenuUI findmenu = new FindmenuUI();
				findmenu.setVisible(true);
				MenuUI.this.dispose();
			}
		});
		button_2.setBounds(110, 124, 123, 29);
		contentPane.add(button_2);
		
		JButton button_3 = new JButton("清空图书");
		button_3.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				ClearUI clear = new ClearUI();
				clear.setVisible(true);
				MenuUI.this.dispose();
			}
		});
		button_3.setBounds(110, 157, 123, 29);
		contentPane.add(button_3);
		
		JButton button_4 = new JButton("退出系统");
		button_4.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI.this.dispose();
			}
		});
		button_4.setBounds(110, 189, 123, 29);
		contentPane.add(button_4);
	}
}

AddUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;

import javax.swing.BoxLayout;
import javax.swing.JLabel;
import java.awt.FlowLayout;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.awt.event.ActionEvent;

public class AddUI extends JFrame {

	private JPanel contentPane;
	private JTextField booknameText;
	private JTextField authorText;
	private JTextField priceText;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					AddUI frame = new AddUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public AddUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("请输入您要增加的图书：");
		label.setBounds(105, 15, 211, 21);
		contentPane.add(label);
		
		JLabel label_1 = new JLabel("书名：");
		label_1.setBounds(15, 50, 81, 21);
		contentPane.add(label_1);
		
		JLabel label_2 = new JLabel("作者：");
		label_2.setBounds(15, 95, 81, 21);
		contentPane.add(label_2);
		
		JLabel label_3 = new JLabel("价格：");
		label_3.setBounds(15, 137, 81, 21);
		contentPane.add(label_3);
		
		booknameText = new JTextField();
		booknameText.setBounds(115, 51, 162, 27);
		contentPane.add(booknameText);
		booknameText.setColumns(10);
		
		authorText = new JTextField();
		authorText.setColumns(10);
		authorText.setBounds(115, 92, 162, 27);
		contentPane.add(authorText);
		
		priceText = new JTextField();
		priceText.setColumns(10);
		priceText.setBounds(115, 134, 162, 27);
		contentPane.add(priceText);
		
		JButton button = new JButton("\u63D0\u4EA4");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				try{
					String choice = "增加";
					String name = booknameText.getText();
					String author = authorText.getText();
					float price = Float.parseFloat(priceText.getText());
					Operator operator = new Operator();
					boolean isSuccess = operator.addBook(name, author, price);
					if(isSuccess)
					{
						Success success = new Success(choice);
						success.setVisible(true);
						AddUI.this.dispose();
					}
					else
					{
						Error error = new Error();
						error.setVisible(true);
						AddUI.this.dispose();
					}
				}catch (Exception e){
					Error error = new Error();
					error.setVisible(true);
					AddUI.this.dispose();
				}
				
			}
		});
		button.setBounds(268, 182, 123, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("\u8FD4\u56DE");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				AddUI.this.dispose();
			}
		});
		button_1.setBounds(37, 182, 123, 29);
		contentPane.add(button_1);
	}
}

DeleteUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;

import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class DeleteUI extends JFrame {

	private JPanel contentPane;
	private JTextField idText;
	private JTextField nameText;
	private JButton button;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					DeleteUI frame = new DeleteUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public DeleteUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("按编号删除:");
		label.setBounds(24, 62, 124, 21);
		contentPane.add(label);
		
		idText = new JTextField();
		idText.setBounds(163, 59, 96, 27);
		contentPane.add(idText);
		idText.setColumns(10);
		
		JLabel label_1 = new JLabel("或按书名删除:");
		label_1.setBounds(15, 104, 124, 21);
		contentPane.add(label_1);
		
		nameText = new JTextField();
		nameText.setBounds(163, 101, 96, 27);
		contentPane.add(nameText);
		nameText.setColumns(10);
		
		JButton submitButton = new JButton("\u63D0\u4EA4");
		submitButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				int id = -1;
				String name = "";
				String choice = "删除";
				try{
					id = Integer.parseInt(idText.getText());
					System.out.println(id);
					Operator operator = new Operator();
					boolean isSuccess = operator.deleteBook(id,name);
					if(isSuccess)
					{
						System.out.println("id删除成功！");
						Success success = new Success(choice);
						success.setVisible(true);
						DeleteUI.this.dispose();
					}
					else
					{
						System.out.println("id删除失败！请检查您输入的是否正确！");
						Error error = new Error();
						error.setVisible(true);
						DeleteUI.this.dispose();
					}
				}catch (Exception e){
					name = nameText.getText();
					if(name.trim().equals(""))
					{
						Error error = new Error();
						error.setVisible(true);
						DeleteUI.this.dispose();
					}
					else
					{
						System.out.println(name);
						Operator operator = new Operator();
						boolean isSuccess = operator.deleteBook(id,name);
						if(isSuccess)
						{
							System.out.println("name删除成功！");
							Success success = new Success(choice);
							success.setVisible(true);
							DeleteUI.this.dispose();
						}
						else
						{
							System.out.println("name删除失败！请检查您输入的是否正确！");
							Error error = new Error();
							error.setVisible(true);
							DeleteUI.this.dispose();
						}
					}
				}
			}
		});
		submitButton.setBounds(257, 143, 123, 29);
		contentPane.add(submitButton);
		
		button = new JButton("\u8FD4\u56DE");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				DeleteUI.this.dispose();
			}
		});
		button.setBounds(28, 143, 123, 29);
		contentPane.add(button);
		
		JLabel label_2 = new JLabel("\u8BF7\u8F93\u5165\u5176\u4E2D\u4E4B\u4E00");
		label_2.setBounds(144, 15, 126, 21);
		contentPane.add(label_2);
	}
}

ChangeUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;

import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class ChangeUI extends JFrame {

	private JPanel contentPane;
	private JTextField idText;
	private JTextField changeText;
	private JButton button_1;
	private JLabel label_2;
	private JTextField nameText;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					ChangeUI frame = new ChangeUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public ChangeUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("请输入您要修改的书的编号：");
		label.setBounds(15, 15, 243, 21);
		contentPane.add(label);
		
		idText = new JTextField();
		idText.setBounds(249, 12, 62, 27);
		contentPane.add(idText);
		idText.setColumns(10);
		
		changeText = new JTextField();
		changeText.setBounds(249, 115, 96, 27);
		contentPane.add(changeText);
		changeText.setColumns(10);
		
		JButton button = new JButton("提交");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String choice = "修改";
				int id = -1;
				String name = "";
				String change = changeText.getText();
				Operator operator = new Operator();
				if(change.equals(""))
				{
					Error error = new Error();
					error.setVisible(true);
					ChangeUI.this.dispose();
				}
				else
				{
					try{
						id = Integer.parseInt(idText.getText());
						System.out.println(id+" "+change);
						boolean isSuccess = operator.changeBoo(id,name,change);
						if(isSuccess)
						{
							System.out.println("修改成功！");
							Success success = new Success(choice);
							success.setVisible(true);
							ChangeUI.this.dispose();
						}
						else
						{
							System.out.println("修改失败！");
							Error error = new Error();
							error.setVisible(true);
							ChangeUI.this.dispose();
						}
					}catch (Exception e){
						name = nameText.getText();
						System.out.println(name+" "+change);
						boolean isSuccess = operator.changeBoo(id,name,change);
						if(isSuccess)
						{
							System.out.println("修改成功！");
							Success success = new Success(choice);
							success.setVisible(true);
							ChangeUI.this.dispose();
						}
						else
						{
							System.out.println("修改失败！");
							Error error = new Error();
							error.setVisible(true);
							ChangeUI.this.dispose();
						}
					}
				}
				
			}
		});
		button.setBounds(279, 200, 123, 29);
		contentPane.add(button);
		
		button_1 = new JButton("\u8FD4\u56DE");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				ChangeUI.this.dispose();
			}
		});
		button_1.setBounds(15, 200, 123, 29);
		contentPane.add(button_1);
		
		label_2 = new JLabel("\u6216\u4E66\u540D");
		label_2.setBounds(177, 52, 81, 21);
		contentPane.add(label_2);
		
		nameText = new JTextField();
		nameText.setColumns(10);
		nameText.setBounds(249, 49, 62, 27);
		contentPane.add(nameText);
		
		JLabel label_1 = new JLabel("\u8BF7\u8F93\u5165\u60A8\u8981\u4FEE\u6539\u4E3A\u4EC0\u4E48\u4E66\u540D\uFF1A");
		label_1.setBounds(15, 118, 266, 21);
		contentPane.add(label_1);
	}
}

FindmenuUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class FindmenuUI extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					FindmenuUI frame = new FindmenuUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public FindmenuUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("\u8BF7\u9009\u62E9\u60A8\u8981\u5982\u4F55\u67E5\u627E\u56FE\u4E66\uFF1A");
		label.setBounds(94, 33, 216, 21);
		contentPane.add(label);
		
		JButton idButton = new JButton("编号");
		idButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				IDfindUI menu = new IDfindUI();
				menu.setVisible(true);
				FindmenuUI.this.dispose();
			}
		});
		idButton.setBounds(134, 60, 107, 29);
		contentPane.add(idButton);
		
		JButton button = new JButton("书名");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				NameFindUI menu = new NameFindUI();
				menu.setVisible(true);
				FindmenuUI.this.dispose();
			}
		});
		button.setBounds(134, 92, 107, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("作者");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				AuthorFindUI menu = new AuthorFindUI();
				menu.setVisible(true);
				FindmenuUI.this.dispose();
			}
		});
		button_1.setBounds(134, 126, 107, 29);
		contentPane.add(button_1);
		
		JButton button_3 = new JButton("价格");
		button_3.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				PriceFindUI menu = new PriceFindUI();
				menu.setVisible(true);
				FindmenuUI.this.dispose();
			}
		});
		button_3.setBounds(134, 159, 107, 29);
		contentPane.add(button_3);
		
		JButton button_2 = new JButton("\u8FD4\u56DE");
		button_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				FindmenuUI.this.dispose();
			}
		});
		button_2.setBounds(134, 189, 107, 29);
		contentPane.add(button_2);
	}

}

IDfindUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;
import model.Book;

import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.awt.event.ActionEvent;

public class IDfindUI extends JFrame {

	private JPanel contentPane;
	private JTextField idText;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					IDfindUI frame = new IDfindUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public IDfindUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("\u8BF7\u8F93\u5165\u60A8\u8981\u67E5\u627E\u7684\u7F16\u53F7:");
		label.setBounds(15, 71, 210, 21);
		contentPane.add(label);
		
		idText = new JTextField();
		idText.setBounds(224, 68, 96, 27);
		contentPane.add(idText);
		idText.setColumns(10);
		
		JButton button = new JButton("\u63D0\u4EA4");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String name = null;
				int id = -1;
				String author = null;
				String dimname = null;
				float minprice = 0;
				float maxprice = -1;
				Operator operator = new Operator();
				try{
					id = Integer.parseInt(idText.getText());
					ArrayList<Book> booklist = operator.findBoo(id,name,author,dimname,minprice,maxprice);
					PrintUI menu = new PrintUI(booklist);
					menu.setVisible(true);
					IDfindUI.this.dispose();
				}catch (Exception e){
					Error error = new Error();
					error.setVisible(true);
					IDfindUI.this.dispose();
				}
			}
		});
		button.setBounds(267, 167, 123, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("返回");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				FindmenuUI menu = new FindmenuUI();
				menu.setVisible(true);
				IDfindUI.this.dispose();
			}
		});
		button_1.setBounds(27, 167, 123, 29);
		contentPane.add(button_1);
	}

}

NameFindUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;
import model.Book;

import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.awt.event.ActionEvent;

public class NameFindUI extends JFrame {

	private JPanel contentPane;
	private JTextField nameText;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					NameFindUI frame = new NameFindUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public NameFindUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("\u8BF7\u8F93\u5165\u60A8\u8981\u67E5\u627E\u7684\u4E66\u540D\uFF1A");
		label.setBounds(78, 53, 227, 21);
		contentPane.add(label);
		
		nameText = new JTextField();
		nameText.setBounds(88, 90, 170, 27);
		contentPane.add(nameText);
		nameText.setColumns(10);
		
		JButton button = new JButton("\u6A21\u7CCA\u67E5\u627E");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String name = null;
				int id = -1;
				String author = null;
				String dimname = null;
				float minprice = 0;
				float maxprice = -1;
				Operator operator = new Operator();
				dimname = nameText.getText();
				if (dimname.equals(""))
				{
					Error error = new Error();
					error.setVisible(true);
					NameFindUI.this.dispose();
				}
				else
				{
					ArrayList<Book> booklist = operator.findBoo(id,name,author,dimname,minprice,maxprice);
					PrintUI menu = new PrintUI(booklist);
					menu.setVisible(true);
					NameFindUI.this.dispose();
				}		
			}
		});
		button.setBounds(241, 176, 123, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("\u7CBE\u786E\u67E5\u627E");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String name = null;
				int id = -1;
				String author = null;
				String dimname = null;
				float minprice = 0;
				float maxprice = -1;
				Operator operator = new Operator();
				name = nameText.getText();
				if (name.equals(""))
				{
					Error error = new Error();
					error.setVisible(true);
					NameFindUI.this.dispose();
				}
				else
				{
					ArrayList<Book> booklist = operator.findBoo(id,name,author,dimname,minprice,maxprice);
					PrintUI menu = new PrintUI(booklist);
					menu.setVisible(true);
					NameFindUI.this.dispose();
				}		
			}
		});
		button_1.setBounds(241, 132, 123, 29);
		contentPane.add(button_1);
		
		JButton button_2 = new JButton("\u8FD4\u56DE");
		button_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				FindmenuUI menu = new FindmenuUI();
				menu.setVisible(true);
				NameFindUI.this.dispose();
			}
		});
		button_2.setBounds(26, 176, 123, 29);
		contentPane.add(button_2);
	}

}

AuthorFindUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;
import model.Book;

import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.awt.event.ActionEvent;

public class AuthorFindUI extends JFrame {

	private JPanel contentPane;
	private JTextField authorText;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					AuthorFindUI frame = new AuthorFindUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public AuthorFindUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("\u8BF7\u8F93\u5165\u60A8\u8981\u67E5\u627E\u7684\u4F5C\u8005\uFF1A");
		label.setBounds(15, 48, 212, 21);
		contentPane.add(label);
		
		authorText = new JTextField();
		authorText.setBounds(226, 45, 124, 27);
		contentPane.add(authorText);
		authorText.setColumns(10);
		
		JButton button = new JButton("\u63D0\u4EA4");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String name = null;
				int id = -1;
				String author = null;
				String dimname = null;
				float minprice = 0;
				float maxprice = -1;
				Operator operator = new Operator();
				author = authorText.getText();
				if (author.equals(""))
				{
					Error error = new Error();
					error.setVisible(true);
					AuthorFindUI.this.dispose();
				}
				else
				{
					ArrayList<Book> booklist = operator.findBoo(id,name,author,dimname,minprice,maxprice);
					PrintUI menu = new PrintUI(booklist);
					menu.setVisible(true);
					AuthorFindUI.this.dispose();
				}		
			}
		});
		button.setBounds(278, 158, 123, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("\u8FD4\u56DE");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				FindmenuUI menu = new FindmenuUI();
				menu.setVisible(true);
				AuthorFindUI.this.dispose();
			}
		});
		button_1.setBounds(40, 158, 123, 29);
		contentPane.add(button_1);
	}

}

PriceFindUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;
import model.Book;

import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.awt.event.ActionEvent;

public class PriceFindUI extends JFrame {

	private JPanel contentPane;
	private JTextField minpriceText;
	private JTextField maxpriceText;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					PriceFindUI frame = new PriceFindUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public PriceFindUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("\u8BF7\u8F93\u5165\u60A8\u8981\u67E5\u627E\u7684\u4EF7\u683C\u533A\u95F4\uFF1A");
		label.setBounds(50, 28, 274, 21);
		contentPane.add(label);
		
		minpriceText = new JTextField();
		minpriceText.setBounds(36, 64, 96, 27);
		contentPane.add(minpriceText);
		minpriceText.setColumns(10);
		
		maxpriceText = new JTextField();
		maxpriceText.setColumns(10);
		maxpriceText.setBounds(217, 64, 96, 27);
		contentPane.add(maxpriceText);
		
		JLabel label_1 = new JLabel("\u81F3");
		label_1.setBounds(160, 67, 81, 21);
		contentPane.add(label_1);
		
		JButton button = new JButton("\u63D0\u4EA4");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String name = null;
				int id = -1;
				String author = null;
				String dimname = null;
				float minprice = 0;
				float maxprice = -1;
				Operator operator = new Operator();
				try{
					minprice = Float.parseFloat(minpriceText.getText());
					maxprice = Float.parseFloat(maxpriceText.getText());
					ArrayList<Book> booklist = operator.findBoo(id,name,author,dimname,minprice,maxprice);
					PrintUI menu = new PrintUI(booklist);
					menu.setVisible(true);
					PriceFindUI.this.dispose();
				}catch (Exception e){
					Error error = new Error();
					error.setVisible(true);
					PriceFindUI.this.dispose();
				}
			}
		});
		button.setBounds(245, 156, 123, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("\u8FD4\u56DE");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				FindmenuUI menu = new FindmenuUI();
				menu.setVisible(true);
				PriceFindUI.this.dispose();
			}
		});
		button_1.setBounds(15, 156, 123, 29);
		contentPane.add(button_1);
	}

}

Success.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;
import model.Book;

import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.awt.event.ActionEvent;

public class Success extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Success frame = new Success("haha");
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Success(String choice) {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel(choice+"成功！");
		label.setBounds(152, 69, 130, 21);
		contentPane.add(label);
		
		JButton button = new JButton("\u8FD4\u56DE\u83DC\u5355");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				Success.this.dispose();
			}
		});
		button.setBounds(31, 142, 130, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("\u67E5\u770B\u6240\u6709\u56FE\u4E66");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				Operator operator = new Operator();
				ArrayList<Book> booklist = operator.printAllbook();
				PrintUI menu = new PrintUI(booklist);
				menu.setVisible(true);
				Success.this.dispose();
			}
		});
		button_1.setBounds(219, 142, 141, 29);
		contentPane.add(button_1);
	}

}

Error.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class Error extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Error frame = new Error();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Error() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("\u64CD\u4F5C\u5931\u8D25\uFF01");
		label.setBounds(151, 67, 110, 21);
		contentPane.add(label);
		
		JButton button = new JButton("\u8FD4\u56DE\u4E3B\u83DC\u5355");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				Error.this.dispose();
			}
		});
		button.setBounds(246, 168, 123, 29);
		contentPane.add(button);
	}

}

PrintUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.border.EmptyBorder;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

import model.Book;

import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.awt.event.ActionEvent;

public class PrintUI extends JFrame {

	private JPanel contentPane;
	private JTable table;
	private JButton button;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					ArrayList<Book> booklist = null;
					PrintUI frame = new PrintUI(booklist);
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public PrintUI(ArrayList<Book> booklist) {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		int high = booklist.size();
		Object[][] obj = new Object[high][4];
		for (int j = 0; j < booklist.size(); j++)  
        {  
            Book book = (Book)booklist.get(j);  
            System.out.println("编号"+book.getBookid()+" 书名："+book.getBookname()+" 作者："+book.getAuthor()+" 单价："+book.getPrice()+"元/本");
            obj[j][0] = Integer.toString(book.getBookid());
            obj[j][1] = book.getBookname();
            obj[j][2]	= book.getAuthor();
            obj[j][3] = book.getPrice() + "";
        }
		table = new JTable();
		table.setModel(new DefaultTableModel(
			obj,
			new String[] {
				"\u7F16\u53F7", "\u4E66\u540D", "\u4F5C\u8005", "\u4EF7\u683C"
			}
		));
		table.setBounds(54, 211, 306, -186);
		JScrollPane scroll = new JScrollPane(table);
		scroll.setLocation(0, 0);
		scroll.setSize(428,208);
		contentPane.add(scroll);
		
		button = new JButton("\u8FD4\u56DE\u4E3B\u83DC\u5355");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				PrintUI.this.dispose();
			}
		});
		button.setBounds(271, 215, 123, 29);
		contentPane.add(button);
		this.setVisible(true);
	}
}

ClearUI.java:

package ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

import control.Operator;

import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JPasswordField;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class ClearUI extends JFrame {

	private JPanel contentPane;
	private JPasswordField keyText;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					ClearUI frame = new ClearUI();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public ClearUI() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel label = new JLabel("\u8BF7\u8F93\u5165\u6E05\u7A7A\u5BC6\u7801\uFF1A");
		label.setBounds(41, 70, 155, 21);
		contentPane.add(label);
		
		keyText = new JPasswordField();
		keyText.setBounds(180, 67, 137, 27);
		contentPane.add(keyText);
		
		JButton button = new JButton("\u63D0\u4EA4");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				try{
					int key = Integer.parseInt(keyText.getText());
					if(key == Operator.clearKey)
					{
						Operator operator = new Operator();
						boolean isSuccess = operator.clearBook();
						String choice = "清空";
						if(isSuccess)
						{
							System.out.println("清空成功！");
							Success success = new Success(choice);
							success.setVisible(true);
							ClearUI.this.dispose();
						}
						else
						{
							System.out.println("清空失败！");
							Error error = new Error();
							error.setVisible(true);
							ClearUI.this.dispose();
						}
					}
					else
					{
						System.out.println("您没有权限执行此操作！");
						Error error = new Error();
						error.setVisible(true);
						ClearUI.this.dispose();
					}
				}catch (Exception f){
					Error error = new Error();
					error.setVisible(true);
					ClearUI.this.dispose();
				}
				
			}
		});
		button.setBounds(277, 166, 123, 29);
		contentPane.add(button);
		
		JButton button_1 = new JButton("\u8FD4\u56DE");
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				MenuUI menu = new MenuUI();
				menu.setVisible(true);
				ClearUI.this.dispose();
			}
		});
		button_1.setBounds(41, 166, 123, 29);
		contentPane.add(button_1);
	}
}

代码比较多，不过主要是界面的代码，后面会陆续更新发到github上...

请期待下一篇：Java入门教程之图书管理系统（由简入繁）(八)

转载请注明出处：http://blog.csdn.net/alextan_/article/details/70272804