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01 概述

一款功能強大的圖書館管理系統，功能齊全，小白/大學生專案實訓，學習的不二之選。

02 技術

此係統使用 java awt 實現。java.awt是一個軟體包，包含用於建立使用者介面和繪製圖形影象的所有分類。在AWT術語中，諸如按鈕或滾動條之類的使用者介面物件稱為元件。Component類是所有 AWT 元件的根。

03 功能詳解

基礎維護

圖書維護

• 新增：輸入圖書編號、圖書名稱、圖書頁數、圖書作者、出版社、庫存數量、所屬型別等圖書資訊，點選Save按鈕新增新圖書。
• 修改：首先根據圖書編號查詢到所要修改的圖書，然後對圖書的名稱、圖書頁數、作者、出版時間、定價、庫存等資訊進行修改。
• 刪除：首先根據圖書編號查詢到所要刪除的圖書，然後進行刪除操作。

讀者維護

• 新增：輸入讀者編號、讀者姓名、讀者類別、讀者性別、可借天數等資訊，然後點選“Add”按鈕新增新讀者。
• 修改：首先根據讀者編號查詢到要修改的讀者資訊，再對讀者編號、讀者姓名、讀者類別、讀者性別、可借天數等資訊進行修改，修改完成點選“儲存”按鈕完成修改。
• 刪除：首先根據讀者編號查詢到要刪除的讀者資訊，然後進行刪除操作。

借閱管理

• 借書管理：首先根據圖書編號和讀者編號查詢到圖書和讀者資訊，在點選“借出”按鈕完成借書。
• 還書管理：首先根據圖書編號和讀者編號查詢到圖書和讀者資訊，在點選“還書”按鈕完成還書。

查詢管理

• 圖書查詢：輸入圖書名稱、作者、出版時間中的任意一項，點選“查詢”按鈕查詢圖書。
• 讀者查詢：輸入讀者姓名、讀者型別中的任意一項，點選“查詢”按鈕查詢讀者。

系統管理

• 修改密碼：首先輸入舊密碼等待校驗，舊密碼輸入正確後即可設定新的密碼。
• 退出系統：退出圖書管理系統程式。

04 執行截圖

新增圖書

新增讀者

借書管理

圖書查詢

修改密碼

05 主要程式碼

新增圖書

package com.jason.frame;//com.jason.frame.BookAdd.java
import java.awt.*;
import java.awt.event.*;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import javax.swing.JOptionPane;
public class BookAdd extends Frame implements ActionListener{
	Toolkit tool= getToolkit();
	String url="src/bookbk.png";
	Image img=tool.getImage(url);
		public void paint(Graphics g){
		g.drawImage(img,0,0,this);
	}

	public void clearAndSetBookId(){
		for(int j=0;j<booktxt.length;j++){
			booktxt[j].setText("");
		}
		String str=getInsertOrderedList();
		booktxt[0].setEditable(false);
		booktxt[0].setText(str);

	}

	String[] lbname={"圖書編號","圖書名稱","圖書頁數","圖書作者","翻     譯","出 版 社","出版時間","定價","庫存數量","所屬型別"};
	Label[] booklb=new Label[10];
	TextField[] booktxt=new TextField[10];
	Button savebtn=new Button("Save");
	Button closebtn=new Button("Close");
	Choice booktype=new Choice();
	public BookAdd(){
		setTitle("新增新書");
		setLayout(null);
		setSize(500,250);
		setResizable(false);
		//this.setOpaque(false);
		this.setForeground(Color.BLACK);
		int lx=50,ly=50;
		booktype.add("程式設計");
		booktype.add("圖形設計");
		booktype.add("其他");
		booktype.add("科技");
		booktype.add("文學");
		booktype.add("歷史");
		booktype.add("百科");
		booktype.add("英語");
		booktype.add("計算機");
		booktype.add("Internet");
		booktype.add("數學");
		String str=getInsertOrderedList();
		for(int i=0;i<booklb.length;i++){
			if(lx>240){
				lx=50;
				ly=ly+30;
			}
			booklb[i]=new Label(lbname[i]);
			booklb[i].setBounds(lx,ly,50,20);
			booktxt[i]=new TextField();
			booktxt[i].setBounds(lx+60,ly,100,20);
			lx=lx+190;
			add(booklb[i]);add(booktxt[i]);
			}
		booktxt[0].setEditable(false);
		booktxt[0].setText(str);

		booktxt[9].setVisible(false);
		booktype.setBounds(300,170,100,20);
		add(booktype);
		savebtn.setBounds(150,210,80,25);
		closebtn.setBounds(280,210,80,25);
		add(savebtn);add(closebtn);
		addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				DbOp.close();
				dispose();	
			}
		});
		savebtn.addActionListener(this);
		closebtn.addActionListener(this);
		setLocationRelativeTo(null);
		setVisible(true);
	}
	public static String getInsertOrderedList(){
		String returnstring="";
		String sql="select * from book";
		
		try{
		int count=0;
		ResultSet rs=DbOp.executeQuery(sql);
		while(rs.next()){
			
			count++;
		}
		String[] allid=new String[count];
		int[] intofid=new int[count];
	
		int i=0;
		ResultSet rs1=DbOp.executeQuery(sql);
		while(rs1.next()){
			allid[i]=rs1.getString("id");
			String mystr=allid[i].substring(1);
			intofid[i]=Integer.parseInt(mystr);
			i++;
		}
		int temp=-1;
		for(int j=0;j<intofid.length;j++){
			if(intofid[j]>temp){
				temp=intofid[j];		
			}
		}
		returnstring=String.valueOf(temp+1);
		int len=returnstring.length();
		for(int f=0;f<5-len;f++){
			returnstring="0"+returnstring;
			
		}
		returnstring="A"+returnstring;
		DbOp.close();
		}catch(SQLException ee){

		}
		
		
		return returnstring;
	}

	public  void actionPerformed(ActionEvent e){
		Object ob=e.getSource();
		if(ob==savebtn){
			savebtnActionPerformed();
			clearAndSetBookId();
		}
		if(ob==closebtn){
				DbOp.close();
				dispose();				
			
		}
	}
	public  void savebtnActionPerformed(){
		String id=booktxt[0].getText();
		String typestr=booktype.getSelectedItem().toString();
		String[] inputstring=new String[9];
		boolean emptyequals=false;
		for(int i=0;i<inputstring.length;i++){
			inputstring[i]=booktxt[i].getText();
			if(inputstring[i].equals("")){
				JOptionPane.showMessageDialog(null,"請務必填寫完整");
				return;
			}
		}
		if(id.equals("")){
			JOptionPane.showMessageDialog(null,"圖書編號不能為空");
			return;
		}
		if(IfBookIdExit(id)){
			JOptionPane.showMessageDialog(null,"圖書編號已存在");
			return;
		}
		try{
			SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM");
			sdf.parse(inputstring[6]);
			float price=Float.parseFloat(inputstring[7]);
			int stock= Integer.parseInt(inputstring[8]);
			int page=Integer.parseInt(inputstring[2]);
			String sql="insert into book(id,bookname,booktype,author,translator,publisher,publish_time,price,stock,page)";
			sql=sql+"values('"+id+"','"+inputstring[1]+"','"+typestr+"','"+inputstring[3]+"','"+inputstring[4]+"','";
			sql=sql+inputstring[5]+"','"+inputstring[6]+"',"+price+","+stock+","+page+")";
			int i=DbOp.executeUpdate(sql);
			if(i==1){
				JOptionPane.showMessageDialog(null,"圖書新增成功！");
				clearAllText();
			}
		}catch(ParseException e2){
			JOptionPane.showMessageDialog(null,"出版時間格式錯誤，正確為（年-月）");
		}catch(NumberFormatException e1){
			JOptionPane.showMessageDialog(null,"庫存數量，價格，頁數錯誤，應為數字");
		}
	}
	public boolean IfBookIdExit(String id){
		boolean right=false;
		String sql="select*from book where id='"+id+"'";
		ResultSet rs=DbOp.executeQuery(sql);
		try{
			while(rs.next()){
			
				right = true;
			}
				//right = false;
		}catch(SQLException e){
			JOptionPane.showMessageDialog(null,"無法正常讀取資料");
		}
		return right;
	}
	public void clearAllText(){
		for(int i=0;i<booktxt.length;i++){
			booktxt[i].setText("");
		}
	}
	public static void main(String[] args){
		new BookAdd();
	}
}
 

新增讀者

package com.jason.frame;//com.jason.frame.ReaderAdd.java
import java.awt.*;
import java.awt.event.*;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JOptionPane;
public class ReaderAdd extends Frame{
	Toolkit tool= getToolkit();
	String url="src/bookbk.png";
	Image img=tool.getImage(url);
		public void paint(Graphics g){
		g.drawImage(img,0,0,this);
	}

	public void clearAndSetReaderId(){
		for(int j=0;j<readertxt.length;j++){
			readertxt[j].setText("");
		}
		String str=getInsertOrderedList();
		readertxt[0].setEditable(false);
		readertxt[0].setText(str);

	}
	String[] labelsign={"讀者編號","讀者姓名","讀者類別","讀者性別","可借數量","可借天數"};
	Label[] readerlb=new Label[6];
	static TextField[] readertxt=new TextField[6];
	Button querybtn,closebtn;
	static Choice readertype,readersex;
	public ReaderAdd(){
		setLayout(null);
		setSize(500,200);setResizable(false);
		setTitle("新增新讀者");
		String str=getInsertOrderedList();
		int lx=50,ly=50;
			for(int i=0;i<readertxt.length;i++){
				if(lx>240){
					ly=ly+30;
					lx=50;
				}
				readerlb[i]=new Label(labelsign[i]);
				readertxt[i]=new TextField();
				readerlb[i].setBounds(lx,ly,50,20);
				readertxt[i].setBounds(lx+60,ly,100,20);
				lx=lx+190;
				add(readerlb[i]);
				add(readertxt[i]);
			}
		readertxt[0].setEditable(false);
		readertxt[0].setText(str);
		readertype=new Choice();
		readertype.add("教師");
		readertype.add("學生");
		readertype.add("作家");
		readertype.add("職工");
		readertype.add("其他");
		readersex=new Choice();
		readersex.add("男");
		readersex.add("女");
		readertxt[2].setVisible(false);
		readertxt[3].setVisible(false);
		readertype.setBounds(110,80,100,20);
		readersex.setBounds(300,80,100,20);
		add(readertype);add(readersex);
		querybtn=new Button("Add");
		closebtn=new Button("Close");
		querybtn.setBounds(130,140,50,20);
		closebtn.setBounds(310,140,50,20);
		add(querybtn);add(closebtn);
		querybtn.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				updateActionPerformed(e);
				clearAndSetReaderId();
			}
		});
		closebtn.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				DbOp.close();
				dispose();
				//System.exit(0);
			}
		});
		addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				DbOp.close();
				dispose();
				//System.exit(0);
			}
		});
		setLocationRelativeTo(null);
		setVisible(true);
	}
	public static String getInsertOrderedList(){
		String returnstring="";
		String sql="select * from reader";
		
		try{
		int count=0;
		ResultSet rs=DbOp.executeQuery(sql);
		while(rs.next()){
			
			count++;
		}
		String[] allid=new String[count];
		int[] intofid=new int[count];
	
		int i=0;
		ResultSet rs1=DbOp.executeQuery(sql);
		while(rs1.next()){
			allid[i]=rs1.getString("id");
			intofid[i]=Integer.parseInt(allid[i]);
			i++;
		}
		int temp=-1;
		for(int j=0;j<intofid.length;j++){
			if(intofid[j]>temp){
				temp=intofid[j];		
			}
		}
		returnstring=String.valueOf(temp+1);
		int len=returnstring.length();
		for(int f=0;f<5-len;f++){
			returnstring="0"+returnstring;
			
		}
		DbOp.close();
		}catch(SQLException ee){

		}
		
		
		return returnstring;
	}
	public static void updateActionPerformed(ActionEvent e){
		String[] readerstr=new String[6];
		readerstr[2]=readertype.getSelectedItem().toString();
		readerstr[3]=readersex.getSelectedItem().toString();
		for(int i=0;i<readerstr.length;i++){
			if(i==2||i==3){
				continue;
			}
			readerstr[i]=readertxt[i].getText();
			if(readerstr[i].equals("")){
				JOptionPane.showMessageDialog(null,"請務必填寫完整");
				return;
			}
		}
		String id=readerstr[0];
		if(IfReaderExit(id)){
			JOptionPane.showMessageDialog(null,"該讀者已經存在！");
			return;
		}
		try{
			int max_num=Integer.parseInt(readerstr[4]);
			int days_num=Integer.parseInt(readerstr[5]);
			String sql="insert into reader(id,readername,readertype,sex,max_num,days_num) values('";
			sql=sql+id+"','"+readerstr[1]+"','"+readerstr[2]+"','"+readerstr[3]+"',"+max_num+","+days_num+")";
			int a=DbOp.executeUpdate(sql);
			if(a==1){
				JOptionPane.showMessageDialog(null,"讀者新增成功");
			}else{
				JOptionPane.showMessageDialog(null,"讀者新增失敗");
			}
			DbOp.close();
		}catch(NumberFormatException e1){
			JOptionPane.showMessageDialog(null,"可借數量和可借天數必須是整數");
		}
	}
	public static boolean IfReaderExit(String id){
		String sql="select * from reader where id='"+id+"'";
		try{
			ResultSet rs=DbOp.executeQuery(sql);
			if(rs.next()){
				return true;
			}else{
				return false;
			}
		}catch(SQLException e){
			JOptionPane.showMessageDialog(null,"查詢資料錯誤");
		}
		return false;
	}
	public static void main(String[] args){
		new ReaderAdd();
	}
}

修改密碼

package com.jason.frame;//com.jason.frame.ChangePassWord.java;
import java.awt.*;
import java.awt.event.*;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JOptionPane;
public class ChangePassWord extends Frame{
	String[] sign={"舊密碼：","設定新密碼：","重複新密碼："};
	Label[] textlb=new Label[3];
	TextField[] passtxt=new TextField[3];
	Button reset=new Button("新密碼設定");
	public ChangePassWord(){
		setTitle("修改密碼");
		setSize(300,250);
		setLayout(null);
		setResizable(false);
		int y=50;
		for(int i=0;i<3;i++){
			textlb[i]=new Label(sign[i]);
			passtxt[i]=new TextField();
			textlb[i].setBounds(50,y,80,20);
			passtxt[i].setBounds(130,y,100,20);
			passtxt[i].setEchoChar('●');
			add(textlb[i]);add(passtxt[i]);
			y=y+50;
		}
		reset.setBounds(110,200,80,20);
		add(reset);
		setLocationRelativeTo(null);
		reset.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				setNewPassWord(e);
			}
		});
		addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				System.exit(0);
			}
		});
		setVisible(true);
	}
	public void setNewPassWord(ActionEvent e){
		String[] password=new String[3];
		String sql;
		for (int i=0;i<password.length;i++){
			password[i]=passtxt[i].getText();
		}
		if(!password[0].equals("")){
			sql="select * from user where username='"+GlobalVar.login_user+"'";
		}else{
			JOptionPane.showMessageDialog(null,"Empty String Just Input");
			return;
		}
		if(password[0].equals(password[1])){

		}
		try{
			ResultSet rs=DbOp.executeQuery(sql);
			while(rs.next()){
				if(password[0].equals(rs.getString("password"))){
					
				}else{
					JOptionPane.showMessageDialog(null,"Sorroy It's Fail It's not Old PassWord");
					return;

				}
			}
		}catch(SQLException ee){
			JOptionPane.showMessageDialog(null,"Sorroy It's Fail Some Data Wrong");
			return;
			
		}
		if(password[0].equals(password[1])){
			JOptionPane.showMessageDialog(null,"Sorroy It's Fail Same From Old Password");
			return;
		}
		if(!password[1].equals(password[2])){
			JOptionPane.showMessageDialog(null,"Sorroy It's Fail  Again Password wrong");
			return;
		}
		if(password[1].equals("")&&password[1].equals("")){
			JOptionPane.showMessageDialog(null,"Sorroy It's Fail  one Empty");
			return;
			
		}
		sql="";
		sql="update user set password='"+password[1]+"'where username='"+GlobalVar.login_user+"'";
		int da=DbOp.executeUpdate(sql);
		if(da==1){
			JOptionPane.showMessageDialog(null,"yet It's Successed  Update PassWord");
		}else{
			JOptionPane.showMessageDialog(null,"Sorroy It's Fail  try again");
		}
	} 
	public static void main(String[] args){
		new ChangePassWord();
	}
}

06 原始碼下載

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