Java GUI 图书管理系统

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01 概述

一款功能强大的图书馆管理系统，功能齐全，小白/大学生项目实训，学习的不二之选。

02 技术

此系统使用 java awt 实现。java.awt是一个软件包，包含用于创建用户界面和绘制图形图像的所有分类。在AWT术语中，诸如按钮或滚动条之类的用户界面对象称为组件。Component类是所有 AWT 组件的根。

03 功能详解

基础维护

图书维护

• 添加：输入图书编号、图书名称、图书页数、图书作者、出版社、库存数量、所属类型等图书信息，点击Save按钮添加新图书。
• 修改：首先根据图书编号查询到所要修改的图书，然后对图书的名称、图书页数、作者、出版时间、定价、库存等信息进行修改。
• 删除：首先根据图书编号查询到所要删除的图书，然后进行删除操作。

读者维护

• 添加：输入读者编号、读者姓名、读者类别、读者性别、可借天数等信息，然后点击“Add”按钮添加新读者。
• 修改：首先根据读者编号查询到要修改的读者信息，再对读者编号、读者姓名、读者类别、读者性别、可借天数等信息进行修改，修改完成点击“保存”按钮完成修改。
• 删除：首先根据读者编号查询到要删除的读者信息，然后进行删除操作。

借阅管理

• 借书管理：首先根据图书编号和读者编号查询到图书和读者信息，在点击“借出”按钮完成借书。
• 还书管理：首先根据图书编号和读者编号查询到图书和读者信息，在点击“还书”按钮完成还书。

查询管理

• 图书查询：输入图书名称、作者、出版时间中的任意一项，点击“查询”按钮查询图书。
• 读者查询：输入读者姓名、读者类型中的任意一项，点击“查询”按钮查询读者。

系统管理

• 修改密码：首先输入旧密码等待校验，旧密码输入正确后即可设定新的密码。
• 退出系统：退出图书管理系统程序。

04 运行截图

添加图书

添加读者

借书管理

图书查询

修改密码

05 主要代码

添加图书

package com.jason.frame;//com.jason.frame.BookAdd.javaimport 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={\"图书编号\",\"图书名称\",\"图书页数\",\"图书作者\",\"翻     译\",\"出 版 社\",\"出版时间\",\"定价\",\"库存数量\",\"所属类型\"};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(\"添加新书\");setLayout(null);setSize(500,250);setResizable(false);//this.setOpaque(false);this.setForeground(Color.BLACK);int lx=50,ly=50;booktype.add(\"程序设计\");booktype.add(\"图形设计\");booktype.add(\"其他\");booktype.add(\"科技\");booktype.add(\"文学\");booktype.add(\"历史\");booktype.add(\"百科\");booktype.add(\"英语\");booktype.add(\"计算机\");booktype.add(\"Internet\");booktype.add(\"数学\");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,\"请务必填写完整\");return;}}if(id.equals(\"\")){JOptionPane.showMessageDialog(null,\"图书编号不能为空\");return;}if(IfBookIdExit(id)){JOptionPane.showMessageDialog(null,\"图书编号已存在\");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,\"图书添加成功！\");clearAllText();}}catch(ParseException e2){JOptionPane.showMessageDialog(null,\"出版时间格式错误，正确为（年-月）\");}catch(NumberFormatException e1){JOptionPane.showMessageDialog(null,\"库存数量，价格，页数错误，应为数字\");}}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,\"无法正常读取数据\");}return right;}public void clearAllText(){for(int i=0;i<booktxt.length;i++){booktxt[i].setText(\"\");}}public static void main(String[] args){new BookAdd();}}

添加读者

package com.jason.frame;//com.jason.frame.ReaderAdd.javaimport 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={\"读者编号\",\"读者姓名\",\"读者类别\",\"读者性别\",\"可借数量\",\"可借天数\"};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(\"添加新读者\");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(\"教师\");readertype.add(\"学生\");readertype.add(\"作家\");readertype.add(\"职工\");readertype.add(\"其他\");readersex=new Choice();readersex.add(\"男\");readersex.add(\"女\");readertxt[2].setVis8000ible(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,\"请务必填写完整\");return;}}String id=readerstr[0];if(IfReaderExit(id)){JOptionPane.showMessageDialog(null,\"该读者已经存在！\");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,\"读者添加成功\");}else{JOptionPane.showMessageDialog(null,\"读者添加失败\");}DbOp.close();}catch(NumberFormatException e1){JOptionPane.showMessageDialog(null,\"可借数量和可借天数必须是整数\");}}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,\"查询数据错误\");}return false;}public static void main(String[] args){new ReaderAdd();}}

修改密码

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={\"旧密码：\",\"设定新密码：\",\"重复新密码：\"};Label[] textlb=new Label[3];TextField[] passtxt=new TextField[3];Button reset=new Button(\"新密码设定\");public ChangePassWord(){setTitle(\"修改密码\");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 源码下载

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