图书管理系统（有BUG未修复）
来源：互联网 发布：大学生婚恋观调研数据 编辑：程序博客网 时间：2024/04/28 07:00
import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;import java.util.ArrayList;import java.util.Collection;import java.util.Collections;import java.util.Comparator;import java.util.Iterator;import java.util.List;import java.util.Scanner;public class BookSystem { static Scanner scanner = new Scanner(System.in); static File file = new File("user.dat"); static Bookmodify books = new Bookmodify();// 实例化书籍类 static Usermodify userm = new Usermodify(); static String sid = null; public static void main(String[] args) throws ClassNotFoundException, IOException { try { if (file.length() == 0l || file.createNewFile() == true) {// 如果user.dat文件大小为0，或者创建空白文件成功，则表明第一次使用，需要注册管理员账户 firstland(); } } catch (IOException e) { e.printStackTrace(); System.out.println("创建\"user.dat\"文件错误。"); } while (true) {// 循环实现选择错误时重新选择 System.out.println("*********************************************"); System.out.println("* *"); System.out.println("* 欢迎使用图书管理系统 *"); System.out.println("* *"); System.out.println("*********************************************"); System.out.println(" 请选择功能：用户登入（A）注册用户（B）退出系统（C) "); String select = scanner.next(); if (select.equalsIgnoreCase("a")) {// 调用String类中equalsIgnoreCase方法来实现忽略大小写 landselect();// 登陆用户选择方法 } else if (select.equalsIgnoreCase("b")) { regedit();// 注册方法 } else if (select.equalsIgnoreCase("c")) { System.exit(1); } else { System.out.println("选择错误，请重新选择。"); } } } // 普通用户注册方法 public static void regedit() throws IOException, ClassNotFoundException { ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));// 输入流，读取文件 Collection<User> users = (Collection<User>) in.readObject(); // Collection<User> users =(Collection<User>) in.readObject(); a: while (true) { System.out.println("请输入ID："); Iterator<User> t = users.iterator();// 迭代器 String id = scanner.next(); while (t.hasNext()) { User user = t.next(); if (user.getId().equals(id)) {// 比较集合中的User类中的id是否和用户输入的id相同 System.out.println("此用户名已注册，请重新输入用户名"); continue a; } else { continue; } } System.out.println("请输入密码："); String key = scanner.next(); User user = new User(id, key, false); users.add(user);// 将新用户写入集合 ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));// 输出流，写入文件 out.writeObject(users);// 将集合写入文件 out.close();// 关闭流 in.close(); break; } } // 登陆用户选择方法 public static void landselect() throws FileNotFoundException, ClassNotFoundException, IOException { while (true) { System.out.println("1)普通用户登陆 2)管理员用户登陆"); String landselect = scanner.next(); if (landselect.equals("1")) { landall(false); break; } else if (landselect.equals("2")) { landall(true); break; } else { System.out.println("选择错误，请重新选择"); } } } // landselect()通用登陆方法 public static void landall(boolean admin) throws FileNotFoundException, IOException, ClassNotFoundException { ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));// 输入流，读取文件 Collection<User> users = (Collection<User>) in.readObject();// 从文件中读出集合 b: while (true) { if (admin == true) {// 选择了管理员登陆 System.out.println("请输入管理员ID："); String id = scanner.next(); System.out.println("请输入管理员密码："); String key = scanner.next(); Iterator<User> t = users.iterator();// 迭代器 while (t.hasNext()) { User user = t.next(); if (user.getId().equals(id) && user.isAdmin() == true) {// 类中的id和输入的id相同并且类中的管理员标记为真 if (user.getKey().equals(key)) { System.out.println("管理员登陆成功"); in.close(); bookselect(true); sid = id; break b; } else { continue; } } else { continue; } } } else {// 选择了普通用户登陆 System.out.println("请输入ID："); String id = scanner.next(); System.out.println("请输入密码："); String key = scanner.next(); Iterator<User> t = users.iterator();// 迭代器 while (t.hasNext()) { User user = t.next(); if (user.getId().equals(id) && user.isAdmin() == false) {// 类中的id和输入的id相同并且类中的管理员标记为假 if (user.getKey().equals(key)) { System.out.println("登陆成功"); in.close(); bookselect(false); sid = id; break b; } else { continue; } } else { continue; } } } System.out.println("登录失败：用户名或密码错误"); } } // 第一次使用 public static void firstland() throws FileNotFoundException, IOException { System.out.println("第一次使用。请注册管理员账户！"); Collection<User> users = new ArrayList<User>(); System.out.println("请输入ID："); String id = scanner.next(); System.out.println("请输入密码："); String key = scanner.next(); User user = new User(id, key, true);// 创建用户类 users.add(user);// 将用户类添加到集合 ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));// 输出流，写入文件 out.writeObject(users);// 将集合写入文件 out.close(); } // 登陆成功选择功能方法 public static void bookselect(boolean admin) throws FileNotFoundException, IOException, ClassNotFoundException { while (true) { System.out.println("请选择功能：查看图书（A）添加图书（B）修改图书（C）删除图书（D）"); System.out.print("修改用户名（E）修改密码（F）"); if (admin == true) {// 管理员用户多了G H 功能 System.out.println("修改用户（G）删除用户（H）"); System.out.println("查看所有用户（I）注销（Q）"); String s = scanner.next(); if ("g".equalsIgnoreCase(s)) {// 修改用户（G） userm.userRe(sid); } else if ("h".equalsIgnoreCase(s)) {// 删除用户（G） userm.userDel(sid); } else { switchs(s); } } else { System.out.println("查看所有用户（I）注销（Q）"); String s = scanner.next(); switchs(s); } } } public static void switchs(String s) throws FileNotFoundException, IOException, ClassNotFoundException { if ("a".equalsIgnoreCase(s)) {// 查看图书（A） books.booklook(); } else if ("b".equalsIgnoreCase(s)) {// 添加图书（B） books.bookadd(); } else if ("c".equalsIgnoreCase(s)) {// 修改图书（C） books.bookmodift(); } else if ("d".equalsIgnoreCase(s)) {// 删除图书（D） books.bookdel(); } else if ("e".equalsIgnoreCase(s)) {// 修改用户名（E） userm.userName(sid); } else if ("f".equalsIgnoreCase(s)) {// 修改密码（F） userm.userKey(sid); } else if ("i".equalsIgnoreCase(s)) {// 查看所有用户（I） ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));// 输入流，读取文件 Collection<User> users = (Collection<User>) in.readObject();// 从文件中读出集合 Iterator<User> t = users.iterator();// 迭代器 while (t.hasNext()) { User user = t.next(); System.out.println("用户名：" + user.getId()); } in.close(); } else if ("q".equalsIgnoreCase(s)) {// 注销（Q） main(null); } }}// 用户类，用于存放用户信息class User implements Serializable { /** * */ private static final long serialVersionUID = 2827586337696797367L; private String id;// 用户名 private String key;// 密码 private boolean admin;// 标记是否是管理员用户 public User(String id, String key, boolean admin) { super(); this.id = id; this.key = key; this.admin = admin; } public String getId() { return id; } public void setId(String id) { this.id = id; } public String getKey() { return key; } public void setKey(String key) { this.key = key; } public boolean isAdmin() { return admin; } public void setAdmin(boolean admin) { this.admin = admin; }}// 图书类，用于存放书籍信息class Book implements Serializable { /** * */ private static final long serialVersionUID = 1L; private String bookname;// 书名 private String author;// 作者 private String press;// 出版社 private long price;// 价格 private int id;// 书号 private String date;// 出版日期 public Book(String bookname, String author, String press, long price, int id, String date) { super(); this.bookname = bookname; this.author = author; this.press = press; this.price = price; this.id = id; this.date = date; } public String getBookname() { return bookname; } public void setBookname(String bookname) { this.bookname = bookname; } public String getAuthor() { return author; } public void setAuthor(String author) { this.author = author; } public String getPress() { return press; } public void setPress(String press) { this.press = press; } public long getPrice() { return price; } public void setPrice(long price) { this.price = price; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getDate() { return date; } public void setDate(String date) { this.date = date; } @Override public String toString() {// 重写toString方法 return getBookname() + " " + getAuthor() + " " + getPress() + " " + getPrice() + " " + getId() + " " + getDate() + "\n"; }}class Usermodify {// 用户管理类 static File file = new File("user.dat"); static Scanner scanner = new Scanner(System.in); public void userName(String name) throws FileNotFoundException, IOException, ClassNotFoundException {// 修改用户名 ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));// 输入流，读取文件 ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));// 输出流，写入文件 Collection<User> users = (Collection<User>) in.readObject();// 从文件中读出集合 Iterator<User> t = users.iterator();// 迭代器 while (t.hasNext()) { User user = t.next(); if (user.getId().equals(name)) { System.out.println("请输入新的用户名："); String newid = scanner.next(); users.remove(user); user.setId(newid); users.add(user); out.writeObject(users); out.close(); in.close(); } } } public void userKey(String name) throws FileNotFoundException, IOException, ClassNotFoundException {// 修改密码 ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));// 输入流，读取文件 ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));// 输出流，写入文件 Collection<User> users = (Collection<User>) in.readObject();// 从文件中读出集合 Iterator<User> t = users.iterator();// 迭代器 while (t.hasNext()) { User user = t.next(); if (user.getId().equals(name)) { System.out.println("请输入新的密码："); String newkey = scanner.next(); users.remove(user); user.setId(newkey); users.add(user); out.writeObject(users); out.close(); in.close(); } } } public void userRe(String name) throws FileNotFoundException, IOException, ClassNotFoundException {// 修改用户 ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));// 输入流，读取文件 ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));// 输出流，写入文件 Collection<User> users = (Collection<User>) in.readObject();// 从文件中读出集合 Iterator<User> t = users.iterator();// 迭代器 while (t.hasNext()) { User user = t.next(); if (user.getId().equals(name)) { System.out.println("请输入新的用户名："); String newid = scanner.next(); users.remove(user); user.setId(newid); users.add(user); out.writeObject(users); out.close(); in.close(); } } } public void userDel(String name) throws FileNotFoundException, IOException, ClassNotFoundException {// 删除用户 ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));// 输入流，读取文件 ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));// 输出流，写入文件 Collection<User> users = (Collection<User>) in.readObject();// 从文件中读出集合 Iterator<User> t = users.iterator();// 迭代器 while (t.hasNext()) { User user = t.next(); if (user.getId().equals(name)) { users.remove(user); out.writeObject(users); out.close(); in.close(); } } }}class Bookmodify {// 图书管理类 static Scanner scanner = new Scanner(System.in); static File fbook = new File("book.dat"); static { try { fbook.createNewFile(); } catch (IOException e) { e.printStackTrace(); System.out.println("创建文件错误。"); } } private void nobook() throws FileNotFoundException, IOException, ClassNotFoundException { System.out.println("图书库无任何书籍，请添加书籍。"); System.out.println("请输入书名："); String name = scanner.next(); System.out.println("请输入作者："); String author = scanner.next(); System.out.println("请输入出版社："); String press = scanner.next(); System.out.println("请输入价格："); long price = scanner.nextLong(); System.out.println("请输入书号："); int id = scanner.nextInt(); System.out.println("请输入出版日期："); String date = scanner.next(); System.out.println( "新书信息如下： 书名：" + name + "作者：" + author + "出版社：" + press + "价格" + price + "书号" + id + "出版日期" + date); while (true) { System.out.println("是否保存该书：(Y)是(N)否"); String s = scanner.next(); if (s.equalsIgnoreCase("y")) { List<Book> books = new ArrayList<Book>();// 创建集合 Book book = new Book(name, author, press, price, id, date); books.add(book); ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(fbook));// 输出流，写入文件 out.writeObject(books);// 将集合写入文件 out.close(); break; } else if (s.equalsIgnoreCase("n")) { break; } else { System.out.println("没有这个选项，请重新选择！"); } } } // 查看图书方法 public void booklook() throws FileNotFoundException, IOException, ClassNotFoundException { if (fbook.length() == 0l) { nobook(); } else { ObjectInputStream in = new ObjectInputStream(new FileInputStream(fbook));// 输入流，读取文件 List<Book> books = new ArrayList<Book>();// 创建集合 books = (List<Book>) in.readObject();// 从文件中读出集合 System.out.println("查看图书"); System.out.println("|书名| |作者| |出版社| |价格| |书号| |出版日期|"); Iterator<Book> t = books.iterator();// 迭代器 while (t.hasNext()) { Book book = t.next(); System.out.println(book.getBookname() + " " + book.getAuthor() + " " + book.getPress() + " " + book.getPrice() + " " + book.getId() + " " + book.getDate()); } in.close(); while (true) { System.out.println("请选择查看方式：(A)价格排序(B)作者排序(C)出版日期排序(E)返回上一级"); String s = scanner.next(); if ("a".equalsIgnoreCase(s)) {// (A)价格排序 Collections.sort(books, new Comparator<Book>() {// 匿名内部类实现Comparator接口 /* * 返回负数表示：o1<o2 返回0表示：o1=o2 返回正数表示o1>o2 */ @Override public int compare(Book o1, Book o2) { if (o1.getPrice() > o2.getPrice()) { return 1; } else if (o1.getPrice() == o2.getPrice()) { return 0; } else { return -1; } } }); System.out.println("|书名| |作者| |出版社| |价格| |书号| |出版日期|"); System.out.println(books); } else if ("b".equalsIgnoreCase(s)) {// (B)作者排序 Collections.sort(books, new Comparator<Book>() {// 匿名内部类实现Comparator接口 @Override public int compare(Book o1, Book o2) { return o1.getAuthor().compareTo(o2.getAuthor()); } }); System.out.println("|书名| |作者| |出版社| |价格| |书号| |出版日期|"); System.out.println(books); } else if ("c".equalsIgnoreCase(s)) {// (C)出版日期排序 Collections.sort(books, new Comparator<Book>() {// 匿名内部类实现Comparator接口 @Override public int compare(Book o1, Book o2) { return o1.getDate().compareTo(o2.getDate()); } }); System.out.println("|书名| |作者| |出版社| |价格| |书号| |出版日期|"); System.out.println(books); } else if ("e".equalsIgnoreCase(s)) {// (E)返回上一级 break; } else { System.out.println("选择错误，请重新选择！"); } } } } // 添加图书（B） public void bookadd() throws FileNotFoundException, IOException, ClassNotFoundException { if (fbook.length() == 0l) { nobook(); } else { System.out.println("请输入书名："); String name = scanner.next(); System.out.println("请输入作者："); String author = scanner.next(); System.out.println("请输入出版社："); String press = scanner.next(); System.out.println("请输入价格："); long price = scanner.nextLong(); System.out.println("请输入书号："); int id = scanner.nextInt(); System.out.println("请输入出版日期："); String date = scanner.next(); System.out.println( "新书信息如下： 书名：" + name + "作者：" + author + "出版社：" + press + "价格" + price + "书号" + id + "出版日期" + date); while (true) { System.out.println("是否保存该书：(Y)是(N)否"); String s = scanner.next(); if (s.equalsIgnoreCase("y")) { ObjectInputStream in = new ObjectInputStream(new FileInputStream(fbook));// 输入流，读取文件 List<Book> books = new ArrayList<Book>();// 创建集合 books = (List<Book>) in.readObject();// 从文件中读出集合 Book book = new Book(name, author, press, price, id, date); books.add(book); ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(fbook));// 输出流，写入文件 out.writeObject(books);// 将集合写入文件 out.close(); in.close(); break; } else if (s.equalsIgnoreCase("n")) { break; } else { System.out.println("没有这个选项，请重新选择！"); } } } } // 修改图书（C） public void bookmodift() throws FileNotFoundException, IOException, ClassNotFoundException { if (fbook.length() == 0l) { nobook(); } else { System.out.println("请输入要修改的书号"); int id = scanner.nextInt(); ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(fbook));// 输出流，写入文件 ObjectInputStream in = new ObjectInputStream(new FileInputStream(fbook));// 输入流，读取文件 List<Book> books = new ArrayList<Book>();// 创建集合 books = (List<Book>) in.readObject();// 从文件中读出集合 Iterator<Book> t = books.iterator();// 迭代器 while (t.hasNext()) { Book book = t.next(); if (id == book.getId()) { int index = books.indexOf(book); System.out.println("书名：" + book.getBookname() + "作者：" + book.getAuthor() + "出版社：" + book.getPress() + "价格" + book.getPrice() + "书号" + book.getId() + "出版日期" + book.getDate()); while (true) { System.out.println("请输入要修改的属性：书名修改(A) 作者修改(B) 出版社修改(C) 价格修改(D) 书号修改(E) 出版日期修改(F) 返回上一级(G)"); String s = scanner.next(); if (s.equalsIgnoreCase("a")) { System.out.println("请输入修改后的书名："); String name = scanner.next(); book.setBookname(name); books.remove(index); books.add(book); out.writeObject(books); } else if (s.equalsIgnoreCase("b")) { System.out.println("请输入修改后的作者："); String author = scanner.next(); book.setAuthor(author); books.remove(index); books.add(book); out.writeObject(books); } else if (s.equalsIgnoreCase("c")) { System.out.println("请输入修改后的出版社："); String press = scanner.next(); book.setPress(press); books.remove(index); books.add(book); out.writeObject(books); } else if (s.equalsIgnoreCase("d")) { System.out.println("请输入修改后的价格："); long price = scanner.nextLong(); book.setPrice(price); books.remove(index); books.add(book); out.writeObject(books); } else if (s.equalsIgnoreCase("e")) { System.out.println("请输入修改后的书号："); int Id = scanner.nextInt(); book.setId(Id); books.remove(index); books.add(book); out.writeObject(books); } else if (s.equalsIgnoreCase("f")) { System.out.println("请输入修改后的出版日期："); String date = scanner.next(); book.setDate(date); books.remove(index); books.add(book); out.writeObject(books); } else if (s.equalsIgnoreCase("g")) { break; } else { System.out.println("输入错误，请重新错误。"); } } } } out.close(); in.close(); } } // 删除图书（D） public void bookdel() throws FileNotFoundException, IOException, ClassNotFoundException { if (fbook.length() == 0l) { nobook(); } else { ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(fbook));// 输出流，写入文件 ObjectInputStream in = new ObjectInputStream(new FileInputStream(fbook));// 输入流，读取文件 List<Book> books = (List<Book>) in.readObject();// 从文件中读出集合 Iterator<Book> t = books.iterator();// 迭代器 while (true) { System.out.println("请选择要删除的操作 (A)按书名删除 (B)按作者删除(C)按书号删除(E)返回上一级"); String s = scanner.next(); if ("a".equalsIgnoreCase(s)) { System.out.println("请输入书名："); String name = scanner.next(); while (t.hasNext()) { Book book = t.next(); if (book.getBookname().equals(name)) { while (true) { System.out.println("书名：" + book.getBookname() + "作者：" + book.getAuthor() + "出版社：" + book.getPress() + "价格" + book.getPrice() + "书号" + book.getId() + "出版日期" + book.getDate()); System.out.println("是否确定删除(Y)是(N)否"); String ss = scanner.next(); if (ss.equalsIgnoreCase("y")) { System.out.println("正在删除......"); int index = books.indexOf(book); books.remove(index); out.writeObject(books); break; } else if (ss.equalsIgnoreCase("n")) { break; } else { System.out.println("没有这个选项，请重新选择！"); } } } } } else if ("b".equalsIgnoreCase(s)) { System.out.println("请输入作者："); String author = scanner.next(); while (t.hasNext()) { Book book = t.next(); if (book.getAuthor().equals(author)) { while (true) { System.out.println("书名：" + book.getBookname() + "作者：" + book.getAuthor() + "出版社：" + book.getPress() + "价格" + book.getPrice() + "书号" + book.getId() + "出版日期" + book.getDate()); System.out.println("是否确定删除(Y)是(N)否"); String ss = scanner.next(); if (ss.equalsIgnoreCase("y")) { System.out.println("正在删除......"); int index = books.indexOf(book); books.remove(index); out.writeObject(books); break; } else if (ss.equalsIgnoreCase("n")) { break; } else { System.out.println("没有这个选项，请重新选择！"); } } } } } else if ("c".equalsIgnoreCase(s)) { System.out.println("请输入书号："); int id = scanner.nextInt(); while (t.hasNext()) { Book book = t.next(); if (book.getId() == id) { while (true) { System.out.println("书名：" + book.getBookname() + "作者：" + book.getAuthor() + "出版社：" + book.getPress() + "价格" + book.getPrice() + "书号" + book.getId() + "出版日期" + book.getDate()); System.out.println("是否确定删除(Y)是(N)否"); String ss = scanner.next(); if (ss.equalsIgnoreCase("y")) { System.out.println("正在删除......"); int index = books.indexOf(book); books.remove(index); out.writeObject(books); break; } else if (ss.equalsIgnoreCase("n")) { break; } else { System.out.println("没有这个选项，请重新选择！"); } } } } } else if ("e".equalsIgnoreCase(s)) { break; } else { System.out.println("选择错误，请重新选择"); } } out.close(); in.close(); } }} 0 0
- 图书管理系统（有BUG未修复）
- 谁有图书管理系统
- 图书管理系统（有很多漏洞）怎么改最好
- 图书管理系统（java）
- 图书管理系统（Java）
- 求助（图书管理系统）
- 图书管理系统（ssh2）
- 图书管理系统（数组）
- 图书管理系统（链表）
- （linux系统）图书管理系统
- 利用java实现基于文本的图书管理系统（有界面）
- 有没有php和mysql 的图书管理系统 帮帮忙
- 数据结构课程设计（图书管理系统）
- ASP.NET 图书管理系统（4）
- （C语言课程设计）图书管理系统
- Oracle之实战（图书管理系统）
- hdu 1497(图书管理系统模拟）
- C++课程设计（图书管理系统）
- python linecache标准库基础学习
- 卸载Oracle 11g数据库
- select函数：I/O多路复用
- cuda caffe cudnn
- dxs
- 图书管理系统（有BUG未修复）
- Android对接微信SDK 续一
- ｓｑｌ中的模糊查询
- 阿里百川HotFix快速集成
- maven常用命令
- JAVA性能优化权威指南 读书笔记五
- 字符设备驱动第八课----互斥锁
- Android 封装Toast
- WIN8安装SQL SERVER2008：出现创建userSettings/Microsoft.SqlServer.Configuration.LandingPage.Properties.Setti
