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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.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={"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.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={"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].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,"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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