基于java设计的图书管理系统

谁践踏了优雅 2023-07-03 04:51 149阅读 0赞

小编在学java的期间，经过查阅资料经修改，实现的一些简单功能：

### 1、登录界面： ###

用户可以选择登录或注册账号，如果初始没有账号，可以通过注册按钮进行注册，然后在进行登录：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNjgwMzI3_size_16_color_FFFFFF_t_70][]

### 代码： ###

public class SignMenu {
    	private String username;
    	private String password1;
    	private String text;
    	private int flag = 0;
    	public JTextField id;
    	private String name;
    	private String select;
    
    	public void init() {
    		JFrame f = new JFrame("欢迎使用图书管理系统");
    		// 改变窗口图标
    		Toolkit t = Toolkit.getDefaultToolkit();
    		Image img = t.getImage("src\\menu\\sign.jpg");
    		f.setIconImage(img);
    
    		// 设置窗口大小
    		f.setSize(600, 600);
    
    		// 使窗口居中
    		f.setLocationRelativeTo(null);
    
    		// 设置布局为空
    		f.setLayout(null);
    
    		// 设置窗口背景图案
    		Icon i = new ImageIcon("src\\menu\\background4.jpg");
    		JLabel jLable = new JLabel(i);
    		jLable.setBounds(0, 0, 600, 600);
    
    		JPanel panel1 = new JPanel();
    		JPanel panel2 = new JPanel();
    		JPanel panel3 = new JPanel();
    		JPanel panel4 = new JPanel();
    		JPanel panel5 = new JPanel();
    		JPanel panel6 = new JPanel();
    
    		/* 添加大标题：图书管理系统 */
    		JLabel lable = new JLabel("图书管理系统");
    		Font font = new Font("宋体", Font.BOLD, 40);// 设置字体
    		lable.setFont(font);
    		panel1.add(lable);
    		panel1.setBounds(140, 60, 300, 300);// 设置面板大小
    		f.add(panel1);
    
    		/* 用户类型标签 */
    		JLabel user = new JLabel("用户类型  ");
    		Font font1 = new Font("宋体", Font.BOLD, 25);
    		user.setFont(font1);
    		panel2.add(user);
    
    		/* 用户类型的下拉框 */
    		JComboBox<String> j = new JComboBox<String>();
    		Dimension dimension = new Dimension(200, 30);// 框框的大小
    		j.setPreferredSize(dimension);
    		j.addItem("普通用户");
    		j.addItem("管理员用户");
    		Font font2 = new Font("宋体", Font.BOLD, 15);
    		j.setFont(font2);
    		j.setBackground(Color.PINK);
    		panel2.setBounds(90, 160, 400, 300);
    		panel2.add(j);
    		f.add(panel2);
    
    		/* 账号标签 */
    		JLabel labid = new JLabel("   账号： ");
    		Font font3 = new Font("宋体", Font.BOLD, 25);
    		labid.setFont(font3);
    		panel3.add(labid);
    
    		/* 输入账户的文本框 */
    		id = new JTextField();
    		id.setPreferredSize(dimension);
    		// id.setBackground(Color.PINK);
    		panel3.add(id);
    		panel3.setBounds(90, 230, 400, 300);
    		f.add(panel3);
    
    		/* 密码标签 */
    		JLabel labpassword = new JLabel("   密码： ");
    		Font font4 = new Font("宋体", Font.BOLD, 25);
    		labpassword.setFont(font4);
    		panel4.add(labpassword);
    
    		/* 输入密码文本框 */
    		JPasswordField password = new JPasswordField();
    		password.setPreferredSize(dimension);
    		Font font5 = new Font("宋体", Font.BOLD, 25);
    		password.setFont(font5);
    		password.setBackground(Color.pink);
    		panel4.add(password);
    		panel4.setBounds(90, 290, 400, 300);
    		f.add(panel4);
    
    		/* 注册登陆按钮 */
    		JButton button1 = new JButton("注册");
    		JButton button2 = new JButton("登陆");
    		button1.setFont(font4);
    		button2.setFont(font4);
    		Dimension dimension2 = new Dimension(100, 50);
    		button1.setPreferredSize(dimension2);
    		button2.setPreferredSize(dimension2);
    		button1.setBackground(Color.PINK);
    		button2.setBackground(Color.PINK);
    		panel5.add(button1);
    		panel6.add(button2);
    		panel5.setBounds(150, 370, 150, 400);
    		panel6.setBounds(330, 370, 150, 400);
    		f.add(panel5);
    		f.add(panel6);
    
    		id.setOpaque(false);
    		password.setOpaque(false);
    		panel1.setOpaque(false);
    		panel2.setOpaque(false);
    		panel3.setOpaque(false);
    		panel4.setOpaque(false);
    		panel5.setOpaque(false);
    		panel6.setOpaque(false);
    
    		f.add(jLable);
    
    		/* 用户类型 */
    		select = "普通用户";
    		j.addItemListener(new ItemListener() {
    
    			@Override
    			public void itemStateChanged(ItemEvent e) {
    				if (e.getStateChange() == ItemEvent.SELECTED) {
    					select = (String) e.getItem();
    				}
    			}
    		});
    
    		/* 点击注册跳转到注册界面 */
    		button1.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				f.dispose();
    				Regest r = new Regest();
    				try {
    					r.show();
    				} catch (Exception e1) {
    					// TODO Auto-generated catch block
    					e1.printStackTrace();
    				}
    			}
    		});
    
    		/* 登陆信息比对 */
    		button2.addActionListener(new ActionListener() {
    			@SuppressWarnings("deprecation")
    			public void actionPerformed(ActionEvent e) {
    				setText(j.getToolTipText());
    				username = id.getText().trim();
    				password1 = password.getText().trim();
    
    				try {
    					flag = select(username, password1);
    				} catch (Exception e1) {
    					// TODO Auto-generated catch block
    					e1.printStackTrace();
    				}
    				if (flag == 1) {// 密码输入正确
    					name = id.getText().trim();
    
    					if (select == "普通用户") {
    						f.dispose();
    						new User(name);
    					} else if (select == "管理员用户") {
    						flag = 0;
    						try {
    							flag = ensure(name);
    						} catch (Exception e1) {
    							// TODO Auto-generated catch block
    							e1.printStackTrace();
    						}
    						if (flag == 1) {
    							new Admin(name);
    							f.dispose();
    						} else {
    							JOptionPane.showMessageDialog(null, "对不起，您还不是管理员", "警告", JOptionPane.WARNING_MESSAGE);
    						}
    					}
    				} else if (flag == 0) {// 密码输入错误
    					JOptionPane.showMessageDialog(null, "密码输入有误", "抱歉", JOptionPane.PLAIN_MESSAGE);
    				} else if (flag == 2) {
    					JOptionPane.showMessageDialog(null, "用户名不存在", "注意", JOptionPane.PLAIN_MESSAGE);
    				}
    			}
    
    			private void setText(String toolTipText) {
    				// TODO Auto-generated method stub
    				
    			}
    		});
    
    		// 设置不可改变窗口大小
    		f.setResizable(false);
    		f.setVisible(true);
    		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    	}

### 2、注册：  ###

注册要求对密码进行限制，只能是6~12位的数字和字符组成，用正则表达式进行判断，增强了密码的安全性，如果哪一项为空，就会弹出相应的提示框：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNjgwMzI3_size_16_color_FFFFFF_t_70 1][]

### 代码： ###

public class Regest {
    	private String username;
    	private String password;
    	private String repassword;
    	private String name;
    	
    	public void show() throws Exception {
    		JFrame f = new JFrame("注册"); 
    		//改变窗口图标
    		Toolkit tool = Toolkit.getDefaultToolkit();
    		Image img = tool.getImage("src\\menu\\sign.jpg");
    		f.setIconImage(img);
    			
    		f.setSize(400, 500);
    		f.setLocationRelativeTo(null);
    		f.setLayout(null);
    		
    		/*设置窗口背景图案*/
    		Icon i = new ImageIcon("src\\menu\\regist.jpg");
    		JLabel label = new JLabel(i);
    		label.setBounds(0, 0, 400, 500);
    
    		JPanel panel1 = new JPanel();
    		JPanel panel2 = new JPanel();
    		JPanel panel3 = new JPanel();
    		JPanel panel4 = new JPanel();
    		JPanel panel5 = new JPanel();
    		JPanel panel6 = new JPanel();
    		@SuppressWarnings("unused")
    		JPanel panel7 = new JPanel();
    		
    		//界面文字的字体，字形，字号
    		Font font = new Font("宋体",Font.BOLD,15);
    		//界面框框的字体，字形，字号
    		Font font2 = new Font("宋体",Font.BOLD,25);
    		Dimension dimension = new Dimension(200,30);
    		
    		panel1.setLayout(null);
    		/*返回按钮*/
    		JButton rebutton = new JButton("返回");
    		Font font4 = new Font("宋体",Font.BOLD,12);
    		rebutton.setFont(font4);
    		Dimension dimension1 = new Dimension(60,40);
    		rebutton.setPreferredSize(dimension1);
    		rebutton.setBackground(Color.white);
    		rebutton.setBounds(0, 0, 60, 40);
    		panel1.add(rebutton);
    		f.add(panel1);
    			
    		//添加注册大标题
    		JLabel regist = new JLabel("注册");
    		Font font1 = new Font("宋体",Font.BOLD,36);
    		regist.setFont(font1);
    		regist.setBounds(150, 10, 400, 70);
    		panel1.add(regist);
    		panel1.setBounds(0, 0, 400, 70);		
    		
    		//添加用户名标签
    		JLabel labname = new JLabel(" 用户名：");
    		labname.setFont(font);
    		panel2.add(labname);
    		
    		//添加用户名文本框
    		JTextField textname = new JTextField();
    		textname.setPreferredSize(dimension);
    		panel2.add(textname);
    		panel2.setBounds(10, 90, 300, 70);
    		f.add(panel2);
    		
    		/*添加设置密码标签*/
    		JLabel labpassword = new JLabel("设置密码：");
    		labpassword.setFont(font);
    		panel3.add(labpassword);
    		
    		/*添加设置密码的文本框*/
    		JPasswordField textpassword = new JPasswordField();
    		textpassword.setPreferredSize(dimension);
    		textpassword.setFont(font2);
    		panel3.add(textpassword);
    		JLabel labrequest = new JLabel("         *密码由6-12位数字、字符组成*");
    		Font font3 = new Font("宋体",Font.BOLD,12);
    		labrequest.setFont(font3);
    		labrequest.setForeground(Color.red);
    		panel3.add(labrequest);
    		panel3.setBounds(10, 150, 300, 70);
    		f.add(panel3);
    		
    		/*重新输入密码标签*/
    		JLabel labpassword1 = new JLabel("确认密码：");
    		labpassword1.setFont(font);
    		panel4.add(labpassword1);
    		
    		/*重新输入密码文本框*/
    		JPasswordField textpassword1 = new JPasswordField();
    		textpassword1.setPreferredSize(dimension);
    		textpassword1.setFont(font2);
    		panel4.add(textpassword1);
    		panel4.setBounds(10, 210, 300, 70);
    		f.add(panel4);
    		
    		/*设置姓名标签*/
    		JLabel labelname = new JLabel("    姓名：");
    		labelname.setFont(font);
    		panel5.add(labelname);
    		
    		/*输入姓名文本框*/
    		JTextField textname1 = new JTextField();
    		textname1.setPreferredSize(dimension);
    		panel5.add(textname1);
    		panel5.setBounds(10, 270, 300, 70);
    		f.add(panel5);
    		
    		/*添加注册按钮*/
    		JButton button = new JButton("注册");
    		Font font5 = new Font("宋体",Font.BOLD,25);
    		button.setFont(font5);
    		Dimension dimension2 = new Dimension(200,40);
    		button.setPreferredSize(dimension2);
    		button.setBackground(Color.pink);
    		panel6.add(button);
    		panel6.setBounds(100, 340, 200, 50);
    		f.add(panel6);

### 3、普通用户主页面： ###

普通用户可以进行借阅图书，归还图书以及查看自己的借阅图书历史记录，同时还可以修改用户信息：![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNjgwMzI3_size_16_color_FFFFFF_t_70 2][]

### 4、管理员界面： ###

同普通用户差不多，管理员用户可以查看所有的借阅图书历史记录，对图书以及用户信息的增、删、查、改等操作：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNjgwMzI3_size_16_color_FFFFFF_t_70 3][]

### 5、用户管理 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNjgwMzI3_size_16_color_FFFFFF_t_70 4][]

### 6、增加用户 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNjgwMzI3_size_16_color_FFFFFF_t_70 5][]

有不足之处，欢迎交流，同时附上源码，回复 “CSDN” ，有问题的私聊小编……

![202002032250574.jpg][]

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[202002032250574.jpg]: https://img-blog.csdnimg.cn/202002032250574.jpg