java图书管理系统代码版

java项目开发实例图书信息管理系统开发文档及源码图书信息管理系统一、系统功能概述:根据图书信息管理系统的特点, 能够将本系统分为2大功能模块, 分别为: 基础数据维护、系统数据维护。

本系统各个部分及其包括的具体功能模块如下图所示:二、数据库设计:图书信息表:字段名说明类型长度及备注ISBN 国际标准书号Varchar(13) 主键typeId 图书类型id IntBookname 书名Varchar(40)Writer 作者Varchar(21)Translater 译者Varchar(30) 能够为空Publisher 出版社Varchar(50)Date 出版日期SmalldatetimePrice 价格money图书类别表:用户信息表:读者信息表:三、系统源代码:Com.zhang.dao:Dao.java //数据库的连接与操作类package com.zhang.dao;import java.sql.Connection;import java.sql.Date;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.util.ArrayList;import java.util.List;import com.zhang.model.BookInfo;import com.zhang.model.BookType;import com.zhang.model.Operator;import com.zhang.model.Reader;import er;public class Dao {protected static String dbClassName ="com.microsoft.sqlserver.jdbc.SQLServerDriver";protected static String dbUrl ="jdbc:sqlserver://localhost:1433;"+ "DatabaseName=db_lib;SelectMethod=Cursor";protected static String dbUser = "sa";protected static String dbPwd = "zhangyong";protected static String second = null;private static Connection conn = null;//创立数据库连接private Dao() {try {if (conn == null) {Class.forName(dbClassName).newInstance();conn = DriverManager.getConnection(dbUrl, dbUser, dbPwd);System.out.println("数据库连接成功! ");}elsereturn;} catch (Exception ee) {ee.printStackTrace();}}//执行查询private static ResultSet executeQuery(String sql) {try {if(conn==null)new Dao();returnconn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSe t.CONCUR_UPDATABLE).executeQuery(sql);} catch (SQLException e) {e.printStackTrace();return null;} finally {}}//执行更新private static int executeUpdate(String sql) {try {if(conn==null)new Dao();return conn.createStatement().executeUpdate(sql);} catch (SQLException e) {System.out.println(e.getMessage());//if(e.getMessage().equals("[Microsoft][SQLServer Driver for JDBC][SQLServer]DELETE 语句与 COLUMN REFERENCE 约束 'FK_TB_BORRO_REFERENCE_TB_BOOKI' 冲突。

图书管理系统源代码(一）程序代码1。

主窗口界面import java.awt。

＊;import java.awt。

event.*;import javax。

swing.*；import javax.swing.border.TitledBorder;import java.awt。

Font;import javax.swing。

JMenu;public class MainWindow extends JFrame implements ActionListener { private static final long serialVersionUID = 1L;static String loginName;static String loginNo;JLabel mlabel；JPanel jp=new JPanel(）;//建立菜单栏JMenu a=new JMenu()；JMenu b=new JMenu(）；JMenu c=new JMenu（)；//建立系统管理菜单组JMenuItem aa=new JMenuItem（)；JMenuItem ab=new JMenuItem（)；JMenuItem ac=new JMenuItem（）;//建立读者管理菜单组JMenuItem bb=new JMenuItem（）；//建立书籍管理菜单组JMenuItem ca=new JMenuItem(）；JMenuItem cb=new JMenuItem（）；JMenuItem cc=new JMenuItem(）；JMenuItem cd=new JMenuItem(）;public MainWindow(）{super(”图书管理系统"）;addWindowListener（new WindowAdapter（）｛System.exit（0)；}｝）；Container d=getContentPane（）；this。

目录第1章本设计所要达到的目的和要求1.1 设计目的1.2 设计要求第2章设计内容第3 章开发和运行环境介绍第4章需求分析1、本设计所要达到的目的和要求1.1 设计目的管理信息系统（MIS）的应用已深入到社会的各行各业，它是信息、软件与科学管理相结合的产物。

MIS的开发过程不仅是一个编写应用程序的过程，而且是一个以软件工程的思想为指导，从可行性研究开始，经过系统分析、系统设计、系统实施到等主要阶段的规范开发过程。

本题目实现的是JAVA系统，我们选择的是图书馆管理系统，不同角色的用户登录，用户信息的管理包括密码管理，及用户借还书，用户对图书信息及本人借还情况的查询，超级管理员对图书信息的增删查改，用户信息的增删查改及借还情况总的查询。

1.2 设计要求1、主题明确，软体开发要有创新性，能体现SQL的存储过程、触发器、游标技术等；2、用高级语言结合SQL Server数据库进行开发；3、写出数据库关系模式及相应的数据库表关系图；4、绘制成绩MIS相应的系统流程图、E-R图等；5、完成成绩MIS登陆界面、主界面、图书信息录入、图书信息查询和其各项设计与操作。

2、设计内容我们设计的图书馆管理系统主要用于对图书馆日常工作的管理，主要任务是用计算机对读者、图书等各种信息进行日常管理，如查询、修改、增加、删除、图书借阅和归还的管理等。

本系统实现了图书馆的信息化管理，完成了图书馆管理系统的基本功能。

该系统主要包括读者用户登录系统、管理员用户登入系统、图书管理系统、图书借阅、图书和用户信息查询子系统四个部分，各部分主要功能如下：读者用户登录子系统：用于数据库的连接，主界面的设计和读者身份用户的登录管理。

管理员用户登入系统：用于管理员用户的管理，如图书添加、图书信息修改。

图书管理系统：用于图书信息的管理，如新书入库、图书信息修改、图书信息删除。

图书借阅系统：用于用户借阅和归还图书。

图书和用户信息查询:图书和用户信息的查询。

/用户登陆数据库代码: importjava.sql.*;classDatabasefConn ectioncon;ResultSetrs;Statementstmt;publicDatabase(){try{Class.forName(,,sun.jdbc.odbc.JdbcOdbcDriver u);〃加载JDBC-ODBC桥驱动程序Stringurl=,,jdbcdbc:HDB M;con 二DriverMa nager.getC onn ection(url);〃连接数据库HDB//stmt提供一个创建SQL查询、执行查询、得到返回结果的空间stmt= //con.createStatementfResultSet.TYPE^SCROLL^SENSITIVE,//ResultSet.CONCUR_READ_ONLY);}catch(Excepti on ex){System.out.println(ex);}}广根据用户名，获取密码*/publicStringgetPswd(Stringname){try{//rs为执行SQL语句所查询的结果赋给结果集对象rsrsustmt.executeQuGryC'SELECTpswdFROMUsGrWHERENamG』+name+);rs」ast();〃把rs的指针移到最后一行if(rs.getRow()==0){retur nn ull;}else{StringpswdDB=rs.getString(,,Pswd H)；〃获取rs结果集中的pswd列的数据returnpswdDB;}}catch(Exceptio ne){System.out.printl n(e);returnnull;厂增加一行用户需、密码数据舟/publicboolea ninsertDatafStringname^tringpswdJftry{Strin gs=getPswd(name);if(s==null){intrtn=stmt.executellpdate(,,INSERTINTOUserVALUES(,,,+name +”「+pswd+”y);if(rtn!=O)returntrue;}else{retur nfalse;}retur nfalse;}catch(Exceptio net){System.out.printl n(et);returnfalse;〃进库数据库代码：importjava.sql.C onn ectio n;importjava.sql.DriverMa nager;importjava.sql.ResultSet;importjava.sql.Statement;classBookDatabase{Conn ectioncon;ResultSetrs;Statementstmt;publicBookDatabase(){try{Class.forName(,l sun.jdbc.odbcJdbcOdbcDriver u);〃加载JDBC-ODBC桥驱动程序Stringurl=,,jdbcdbc:Book,1;con 二DriverMa nager.getCon nection (url);〃连接数据库HDB//stmt提供一个创建SQL查询、执行查询、得到返回结果的空间stmt=co n・creatGStatemGnt(ResultSet・TYPE_SCROLL_SENSITIVE，ResultSet.CONCUR_READ_ONLY);}catch(Exceptio nex){ System.out.printl n(ex);厂增加一行用户需、密码数据*7publicboolea ninsertData(Stringid, String nam 已Stringwhere,Stringprice z Stringdate){try{intrtn=stmt.executellpdate(,,INSERTINTOBookVALUES(,,,+id+name+,,l/,,,+where+,,l/l,l+price+,,,；,,+dateif(rtn!=O){returntrue;}else{returnfalse;}}catch(Excep tion et){System.out.printl n(et);returnfalse;}}/**publicbooleandeleteData(Stringid){try{intrt n二♦stmt.executeUpdatef^ELETEFROMBookWHEREid^Ol^^nrtn^O)!*returntrue;}else{returnfalse;}}catch(Exceptione){ *System.out.println(e);returnfalse;}}publicboole anSelect(String *id){try{intrtn=stmt.executeUpdate(,,SELECT*FROMBooklnWHERE ♦id=IH+id+);♦*if(rt n!=O){retur ntrue;}else{retur nfelse;}}catch(Exception*e){System.out.println(e);returnfalse;}}*/}〃出库数据库代码：importjava.sql.C onn ectio n;importjava.sql.DriverMa nager;importjava.sql.ResultSet;importjava.sql.Statement;classBookDatabasel{Conn ectioncon;ResultSetrs;Statementstmt;publicBookDatabasel(){try{Class.forNameC'sun.jdbc.odbcJdbcOdbcDriver'1)；〃加载JDBC-ODBC桥驱动程序Stringurl=,,jdbcdbc:Book,1;con 二DriverMa nager.getCon nection (url);〃连接数据库HDB//stmt提供一个创建SQL查询、执行查询、得到返回结果的空间stmt=co n・creatGStatemGnt(ResultSet・TYPE_SCROLL_SENSITIVE，ResultSet.CONCUR_READ_ONLY);}catch(Excepti on ex){System.out.pri ntln(ex);琢增加一行用户名、密码数拯publicbooleaninsertData(Stringid,Stringname z String *where z String ♦*price/Stringdate){try{intrtn=stmt.executeUpdate(,,INSERTINTO*BooklnVALUES(,H+id+♦s「+name+“「+whae*「+price+y+datery);♦*if(rt n!=O){retur ntrue;}else{returnfalse;}}catch(Exception*et){System.out.println(et);retur nfalse;}}*/publicbooleandeleteData(Stringid){try{intrt n=stmt.executellpdate(,l DELETEFROMBookWHEREid=,,,+id+,,,H);if(rtn!=O){returntrue;}else{returnfalse;catch(Excepti on e){ System.out.pri ntln(e); returnfalse;♦public bo olea nSelect(Stringid){try{intrt n 二♦stmt.executeUpdate(,,SELECT*FROMBooklnWHEREid=,,,+id+,,,l,);if(rtn!=*0){retur ntrue;}else{retur nfalse;}}catch(Exceptione){♦System.out.pri nt In (e);returnfalse;}}*/}〃查询数据库代码；importjava.awt.*;importjava.awt.event.*;importjava.sql.*;importjavax.swing.*;classBookDatabase2exte ndsJFrame{Stringnumber, nam 已address, prices,day;Conn ectioncon;Statementstmt=null;ResultSetresult=null;Strin gsql=null;publicBookDatabase2(){try{Class.forName(,l sun.jdbc.odbcJdbcOdbcDriver u);〃加载JDBC-ODBC桥驱动程序Stringurl=,,jdbc:odbc:Book H;con 二DriverMa nager.getCon nection (url);〃连接数据库HDB//stmt提供一个创建SQL查询、执行查询、得到返回结果的空间stmt=co n・creatGStatemGnt(ResultSet・TYPE_SCROLL_SENSITIVE，ResultSet.CONCUR_READ_ONLY);}catch(Exceptio nex){ System.out.printl n(ex);publicvoidselect(Stringid){try{sql=,,SELECT*FROMBookwhereid=,,,+id+,,,l,;result=stmt.executeQuery(sql);while(result.next()){number=result.getString(l);name=result.getString(2);address=result.getStri ng(3);prices=result.getString(4);day=result.getStri ng(4);}JOptionPane.showMessageDialogfBookDatabaseZ.this/1成功査询图书!\n,,+,1图书ID:,,+number+l,\n l,+H图书名称:,,+name+,,\n，，+u出版社”+address+”\n”+”价格:,,+prices+,,\n H+,,tB 版日期:,,+day+,,\n，7,提示,,/JOptionPane.ERROR_MESSAGE);}catch(Excepti on e){System.out.printl n(e);（注：文档可能无法思考全面，请浏览后下载，供参考。

用Java写一个图书管理系统的代码```import java.util.*;public class BookManager {// Create a list for book storageprivate List<Book> books;public BookManager() {books = new ArrayList<Book>();}// Add a book to the listpublic void addBook(Book book) {books.add(book);}// Remove a book from the listpublic void removeBook(Book book) {books.remove(book);}// Get all books in the listpublic List<Book> getAllBooks() {return books;}// Search a book by book namepublic List<Book> searchByName(String name) {List<Book> resultBooks = new ArrayList<Book>();for (Book book : books) {if (book.getName().equals(name)) {resultBooks.add(book);}}return resultBooks;}// Search a book by author namepublic List<Book> searchByAuthor(String author) { List<Book> resultBooks = new ArrayList<Book>(); for (Book book : books) {if (book.getAuthor().equals(author)) {resultBooks.add(book);}}return resultBooks;}}class Book {private String name;private String author;public Book(String name, String author) { = name;this.author = author;}public String getName() {return name;}public void setName(String name) { = name;}public String getAuthor() {return author;}public void setAuthor(String author) { this.author = author;}}```。

声明：本系统是基于C/S的图书管理系统，主要使用的是Oracle数据库，下面附所有实现代码package library；import java.awt。

BorderLayout;import java.awt。

Container；import java。

awt。

GridLayout；import java。

awt.event.ActionEvent；import java。

awt。

event。

ActionListener；import java。

sql.ResultSet;import javax。

swing.JButton;import javax.swing。

JComboBox；import javax.swing.JFrame；import javax.swing。

JLabel;import javax。

swing。

JOptionPane;import javax。

swing。

JPanel;import javax.swing.JTextField;public class book_add extends JFrame implements ActionListener｛DataBaseManager db=new DataBaseManager（)；ResultSet rs;JPanel panel1,panel2;JLabel book_id_label,book_name_label，author_label，press_label，press_date_label,price_label，book_num_label,borrowed_num_label,address；JTextField book_id_TextField,book_name_TextField，author_TextField，press_TextField，press_date_TextField，price_TextField,book_num_TextField, borrowed_count；JComboBox addresst；Container c；JButton clear,add，exit;public book_add（）{super（”添加图书信息"）；c=getContentPane()；c。

【图书管理系统】【MainPro包】1.系统登录页面public class Login extends Frame {private static final long serialVersionUID = -1758475247807861408L;TextField text_user;TextField text_pass;public Login() {1 this.setTitle("登录");this.setLayout(null);//默认流式布局this.setSize(260, 170);/* 定义标签与文本框*/Label lbUser = new Label("用户名：");text_user = new TextField();Label lbPass = new Label("密码：");text_pass = new TextField();Button btn_ok = new Button("确定");Button btn_cancel = new Button("取消");lbUser.setBounds(40, 53, 60, 20);//x,y,width,heightlbPass.setBounds(40, 83, 60, 20);text_user.setBounds(100, 50, 120, 20);text_pass.setBounds(100, 80, 120, 20);btn_ok.setBounds(45, 120, 80, 25); // 确定按钮btn_cancel.setBounds(135, 120, 80, 25); // 取消按钮/* 添加标签与文本框*/add(lbUser);add(lbPass);add(text_user);add(text_pass);add(btn_ok);add(btn_cancel);setLocationRelativeTo(null); // 使窗体在屏幕上居中放置this.setVisible(true); // 使窗体可见btn_ok.addActionListener((new ActionListener() {public void actionPerformed(ActionEvent e) {btn_okActionPerformed(e);//自定义确定按钮触发的实施过程}}));btn_cancel.addActionListener((new ActionListener() {public void actionPerformed(ActionEvent e) {DbOp.Close(); // 关闭数据库System.exit(0);}}));this.addWindowListener(new WindowAdapter() {/* 关闭窗口*/// 重写windowClosing()方法public void windowClosing(WindowEvent e) {DbOp.Close(); // 关闭数据库System.exit(0);} }); }public void btn_okActionPerformed(ActionEvent e) {String user = text_user.getText();String pass = text_pass.getText();String is_admin;// 如果用户名或密码任一为空，则终止后续操作if (user.equals("")||pass.equals("")) {JOptionPane.showMessageDialog(null, "用户名或密码不能为空！");return;}try {// 核对用户名和密码String sql = "select * from user where username=" + "'" + user + "' and password=" + "'" + pass + "'";ResultSet rs = DbOp.executeQuery(sql);// 如果此用户存在，则记录其状态（否：不是管理员，是：是管理员）if (rs.next()) {is_admin = rs.getString("is_admin");} else {JOptionPane.showMessageDialog(null, "用户名或密码不正确！");return;}GlobalVar.login_user = user; // 记录登录的用户名ShowMain show = new ShowMain(); // 调用主程序// 只有管理员才能使用"基础管理"和"借阅管理"菜单show.setRights(is_admin);// 释放窗体及其全部组件的屏幕资源，即使释放登录窗体dispose(); // 释放当前窗体} catch (SQLException e1) {JOptionPane.showMessageDialog(null, "用户数据库有误！");}}}2.系统首页页面public class ShowMain extends Frame {private static final long serialVersionUID = 5003296786441785470L;MenuBar menuBar;Menu jcwh, jcwh_book, jcwh_reader;//基础维护：图书维护、读者维护Menu jywh, cxgl, xtgl;//借阅维护、查询管理、系统管理MenuItemjcwh_book_add,jcwh_book_update,jcwh_book_delete,jcwh_reader_add,jcwh_reader_update,jcwh_reader_delete;MenuItem jywh_borrow, jywh_back;MenuItem cxgl_book, cxgl_reader;MenuItem xtgl_update_pass, xtgl_exit;public void setRights(String rights) {// 如果不是管理员，则禁止用户维护图书信息和读者信息以及禁止进行借阅管理，即只能查询if (rights.equals("否")) {jywh.setEnabled(false);jcwh.setEnabled(false);}}public ShowMain() {setTitle("图书管理系统");setLayout(new BorderLayout());setSize(640, 480);menuBar = new MenuBar();jcwh = new Menu("基础维护");// 基础维护菜单jcwh_book = new Menu("图书维护");// 图书维护菜单jcwh_book_add = new MenuItem("添加");// 添加图书菜单jcwh_book_update = new MenuItem("修改");// 修改图书菜单jcwh_book_delete = new MenuItem("删除");// 删除图书菜单jcwh_reader = new Menu("读者维护");// 读者维护菜单jcwh_reader_add = new MenuItem("添加读者");// 添加读者菜单jcwh_reader_update = new MenuItem("修改读者");jcwh_reader_delete = new MenuItem("删除读者");jywh = new Menu("借阅管理");jywh_borrow = new MenuItem("借书管理");jywh_back = new MenuItem("还书管理");cxgl = new Menu("查询管理");cxgl_book = new MenuItem("图书查询");cxgl_reader = new MenuItem("读者查询");xtgl = new Menu("系统管理");xtgl_update_pass = new MenuItem("修改密码");xtgl_exit = new MenuItem("退出系统");// 添加图书菜单jcwh_book.add(jcwh_book_add);jcwh_book.add(jcwh_book_update);jcwh_book.add(jcwh_book_delete);jcwh.add(jcwh_book);jcwh_reader.add(jcwh_reader_add);jcwh_reader.add(jcwh_reader_update);jcwh_reader.add(jcwh_reader_delete);jcwh.add(jcwh_reader);jywh.add(jywh_borrow);jywh.add(jywh_back);cxgl.add(cxgl_book);cxgl.add(cxgl_reader);xtgl.add(xtgl_update_pass);xtgl.add(xtgl_exit);menuBar.add(jcwh);menuBar.add(jywh);menuBar.add(cxgl);menuBar.add(xtgl);setMenuBar(menuBar);setLocationRelativeTo(null); // 使窗体在屏幕上居中放置setVisible(true); // 使窗体可见jcwh_book_add.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new BookManeger("save");} });jcwh_book_update.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new BookManeger("update");} });jcwh_book_delete.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new BookManeger("delete");} });jcwh_reader_add.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new ReaderManeger("save");} });jcwh_reader_update.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new ReaderManeger("update");} });jcwh_reader_delete.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new ReaderManeger("delete");} });jywh_borrow.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new Borrow();} });jywh_back.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new Back();} });cxgl_book.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new BookQuery();} });cxgl_reader.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new ReaderQuery();} });xtgl_update_pass.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new UpdatePassword();} });xtgl_exit.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {DbOp.Close(); // 关闭数据库System.exit(0);}});this.addWindowListener(new WindowAdapter() {/* 关闭窗口*/// 重写windowClosing()方法public void windowClosing(WindowEvent e) {DbOp.Close(); // 关闭数据库System.exit(0);}});}}3.图书管理public class BookManeger extends JFrame {private static final long serialVersionUID = 377287301994613384L;private Label lbbookid_c = new Label("图书编号");private TextField tf_bookid_c = new TextField();private Label lbbookid = new Label("图书编号");private TextField tf_bookid = new TextField();private Label lbbookname = new Label("图书名称");private TextField tf_bookname = new TextField();private Label lbbooktype = new Label("图书类别");private Choice tf_booktype = new Choice();private Label lbauthor = new Label("作者");private TextField tf_author = new TextField();private Label lbtranslator = new Label("译者");private TextField tf_translator = new TextField();private Label lbpublisher = new Label("出版社");private TextField tf_publisher = new TextField();private Label lbpublish_time = new Label("出版时间");private TextField tf_publish_time = new TextField();private Label lbprice = new Label("定价");private TextField tf_price = new TextField();private Label lbstock = new Label("库存数量");private TextField tf_stock = new TextField();private Button queryBtn = new Button("查询");private Button saveBtn = new Button("保存");private Button closeBtn = new Button("关闭");private String optionStr;BookManeger(String str) {optionStr = str;ggFrame(optionStr);saveBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("bookid", tf_bookid);map.put("bookname", tf_bookname);map.put("booktype", tf_booktype);map.put("author", tf_author);map.put("translator", tf_translator);map.put("publisher", tf_publisher);map.put("publish_time", tf_publish_time);map.put("price", tf_price);map.put("stock", tf_stock);int i ;if(optionStr.equals("delete")){i = Jcwh.btn_delActionPerformed(e, map);}else{i = Jcwh.btn_saveActionPerformed(e, map,optionStr);}if (i == 1) {String showInfo = "";if(optionStr.equals("save")){showInfo = "图书添加成功！";}else if(optionStr.equals("update")){showInfo = "图书修改成功！";}else if(optionStr.equals("delete")){showInfo = "图书删除成功！";}JOptionPane.showMessageDialog(null, showInfo);// 清空全部文本框clearAllTextfield();}}});closeBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {dispose(); // 释放当前窗体}});/* 关闭窗口*/this.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) { // 关闭当前窗口dispose(); // 释放当前窗体}});}private void ggFrame(String str) {setLayout(null);setSize(500, 320);lbbookid.setBounds(50, 40, 50, 20); // 图书编号tf_bookid.setBounds(110, 40, 100, 20);lbbookname.setBounds(240, 40, 50, 20); // 图书名称tf_bookname.setBounds(300, 40, 100, 20);lbbooktype.setBounds(50, 80, 50, 20); // 图书类别tf_booktype.setBounds(110, 80, 100, 20);tf_booktype.add("科技");tf_booktype.add("文学");tf_booktype.add("社科");tf_booktype.add("其他");lbauthor.setBounds(240, 80, 50, 20); // 作者tf_author.setBounds(300, 80, 100, 20);lbtranslator.setBounds(50, 120, 50, 20); // 设置译者tf_translator.setBounds(110, 120, 100, 20);lbpublisher.setBounds(240, 120, 50, 20); // 出版社tf_publisher.setBounds(300, 120, 100, 20);lbpublish_time.setBounds(50, 160, 50, 20); // 出版时间tf_publish_time.setBounds(110, 160, 100, 20);lbprice.setBounds(240, 160, 50, 20); // 定价tf_price.setBounds(300, 160, 100, 20);lbstock.setBounds(50, 200, 50, 20); // 库存数量tf_stock.setBounds(110, 200, 100, 20);saveBtn.setBounds(150, 240, 80, 25); // 保存按钮closeBtn.setBounds(280, 240, 80, 25);// 关闭按钮if(str.equals("save")){setTitle("添加图书");}else if(str.equals("update")){setTitle("修改图书");lbbookid_c.setBounds(100, 10, 50, 20); // 图书编号tf_bookid_c.setBounds(160, 10, 100, 20);tf_bookid.setEditable(false);//修改的图书信息中id不可以修改queryBtn.setBounds(280, 10, 80, 20); // 查询按钮add(lbbookid_c);add(tf_bookid_c);add(queryBtn);queryBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("bookid", tf_bookid_c);Book book = (Book)Jcwh.btn_queryActionPerformed(e,map).get("book");if(book!=null){tf_bookid.setText(book.getId());tf_bookname.setText(book.getBookname());// 将Choice的选定项设置为其名称等于指定字符串的项tf_booktype.select(book.getBooktype());tf_author.setText(book.getAuthor());tf_translator.setText(book.getTranslator());tf_publisher.setText(book.getPublisher());tf_publish_time.setText(book.getPublish_time().toString());tf_price.setText(String.valueOf(book.getPrice()));tf_stock.setText(String.valueOf(book.getStock()));}}});saveBtn.setLabel("修改");//将按钮显示文字修改成“修改”}else if(str.equals("delete")){setTitle("删除图书");lbbookid_c.setBounds(100, 10, 50, 20); // 图书编号tf_bookid_c.setBounds(160, 10, 100, 20);tf_bookid.setEditable(false);//修改的图书信息中id不可以修改queryBtn.setBounds(280, 10, 80, 20); // 查询按钮add(lbbookid_c);add(tf_bookid_c);add(queryBtn);queryBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("bookid", tf_bookid_c);Book book = (Book)Jcwh.btn_queryActionPerformed(e,map).get("book");if(book!=null){tf_bookid.setText(book.getId());tf_bookname.setText(book.getBookname());// 将Choice的选定项设置为其名称等于指定字符串的项tf_booktype.select(book.getBooktype());tf_author.setText(book.getAuthor());tf_translator.setText(book.getTranslator());tf_publisher.setText(book.getPublisher());tf_publish_time.setText(book.getPublish_time().toString());tf_price.setText(String.valueOf(book.getPrice()));tf_stock.setText(String.valueOf(book.getStock()));}}});saveBtn.setLabel("删除");//将按钮显示文字修改成“删除”}add(lbbookid);add(tf_bookid);add(lbbookname);add(tf_bookname);add(lbbooktype);add(tf_booktype);add(lbauthor);add(tf_author);add(lbtranslator);add(tf_translator);add(lbpublisher);add(tf_publisher);add(lbpublish_time);add(tf_publish_time);add(lbprice);add(tf_price);add(lbstock);add(tf_stock);add(saveBtn);add(closeBtn);setLocationRelativeTo(null); // 使窗体在屏幕上居中放置setVisible(true); // 使窗体可见}private void clearAllTextfield() {tf_bookid.setText("");tf_bookname.setText("");tf_author.setText("");tf_translator.setText("");tf_publisher.setText("");tf_publish_time.setText("");tf_price.setText("");tf_stock.setText("");}}4.读者管理public class ReaderManeger extends JFrame {private static final long serialVersionUID = -2399939451497711745L;Label lbreaderid_c = new Label("读者编号");TextField tf_readerid_c = new TextField();Label lbreaderid = new Label("读者编号");TextField tf_readerid = new TextField();Label lbreadername = new Label("读者姓名");TextField tf_readername = new TextField();Label lbreadertype = new Label("读者类别");Choice tf_readertype = new Choice();Label lbsex = new Label("性别");Choice tf_sex = new Choice();Label lbmax_num = new Label("可借数量");TextField tf_max_num = new TextField();Label lbdays_num = new Label("可借天数");TextField tf_days_num = new TextField();Button queryBtn = new Button("查询");Button saveBtn = new Button("保存");Button closeBtn = new Button("关闭");private String optionStr;//保存、修改、删除ReaderManeger(String str){optionStr = str;ggFrame(optionStr);saveBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("readerid", tf_readerid);map.put("readername", tf_readername);map.put("readertype", tf_readertype);map.put("sex", tf_sex);map.put("days_num", tf_days_num);map.put("max_num", tf_max_num);int i ;if(optionStr.equals("delete")){i = Jcwh.btn_delReaderActionPerformed(e, map);}else{i = Jcwh.btn_saveReaderActionPerformed(e,map,optionStr);}if (i == 1) {String showInfo = "";if(optionStr.equals("save")){showInfo = "读者添加成功！";}else if(optionStr.equals("update")){showInfo = "读者修改成功！";}else if(optionStr.equals("delete")){showInfo = "读者删除成功！";}JOptionPane.showMessageDialog(null, showInfo);// 清空全部文本框clearAllTextfield();}}});closeBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {dispose(); // 释放当前窗体}});this.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) { // 关闭当前窗口dispose(); // 释放当前窗体}});}private void ggFrame(String str) {setLayout(null);setTitle("添加读者信息");setSize(500, 230);lbreaderid.setBounds(50, 50, 50, 20);tf_readerid.setBounds(110, 50, 100, 20);lbreadername.setBounds(240, 50, 50, 20);tf_readername.setBounds(300, 50, 100, 20);lbreadertype.setBounds(50, 80, 50, 20);tf_readertype.setBounds(110, 80, 100, 20);tf_readertype.add("教师");tf_readertype.add("学生");tf_readertype.add("职工");lbsex.setBounds(240, 80, 50, 20);tf_sex.setBounds(300, 80, 100, 20);tf_sex.add("男");tf_sex.add("女");lbmax_num.setBounds(50, 110, 50, 20);tf_max_num.setBounds(110, 110, 100, 20);lbdays_num.setBounds(240, 110, 50, 20);tf_days_num.setBounds(300, 110, 100, 20);saveBtn.setBounds(150, 150, 80, 25);closeBtn.setBounds(280, 150, 80, 25);if(str.equals("save")){setTitle("添加读者");}else if(str.equals("update")){setTitle("修改读者");lbreaderid_c.setBounds(100, 10, 50, 20);tf_readerid_c.setBounds(160, 10, 100, 20);tf_readerid.setEditable(false);queryBtn.setBounds(280, 10, 80, 20);add(lbreaderid_c);add(tf_readerid_c);add(queryBtn);queryBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("readerid", tf_readerid_c);Reader reader = (Reader)Jcwh.btn_queryReaderActionPerformed(e,map).get("reader");if(reader!=null){tf_readerid.setText(reader.getId());tf_readername.setText(reader.getReadername());tf_readertype.select(reader.getReadertype());tf_sex.select(reader.getSex());tf_days_num.setText(String.valueOf(reader.getDays_num()));tf_max_num.setText(String.valueOf(reader.getMax_num()));}}});saveBtn.setLabel("修改");//将按钮显示文字修改成“修改”}else if(str.equals("delete")){setTitle("删除图书");lbreaderid_c.setBounds(100, 10, 50, 20);tf_readerid_c.setBounds(160, 10, 100, 20);tf_readerid.setEditable(false);queryBtn.setBounds(280, 10, 80, 20);add(lbreaderid_c);add(tf_readerid_c);add(queryBtn);queryBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("readerid", tf_readerid_c);Reader reader = (Reader)Jcwh.btn_queryReaderActionPerformed(e,map).get("reader");if(reader!=null){tf_readerid.setText(reader.getId());tf_readername.setText(reader.getReadername());tf_readertype.select(reader.getReadertype());tf_sex.select(reader.getSex());tf_days_num.setText(String.valueOf(reader.getDays_num()));tf_max_num.setText(String.valueOf(reader.getMax_num()));}}});saveBtn.setLabel("删除");//将按钮显示文字修改成“删除”}add(lbreaderid);add(lbreadername);add(lbreadertype);add(lbsex);add(lbmax_num);add(lbdays_num);add(tf_readerid);add(tf_readername);add(tf_max_num);add(tf_days_num);add(tf_readertype);add(tf_sex);add(saveBtn);add(closeBtn);setLocationRelativeTo(null);setVisible(true);}private void clearAllTextfield() {tf_readerid.setText("");tf_readername.setText("");tf_max_num.setText("");tf_days_num.setText("");}public static void main(String[] args) {ReaderManeger r = new ReaderManeger("update");}}5.借书public class Borrow extends Frame {private static final long serialVersionUID = -1036076990599464079L;String SepLine = "-------------------------------------------------";Label lbbookid = new Label("图书编号");Label lbreaderid = new Label("读者编号");TextField tf_bookid = new TextField();TextField tf_readerid = new TextField();Button queryBtn = new Button("查询");Label lbbookinfo = new Label(SepLine + "图书信息" + SepLine); Label lbbookname = new Label("图书名称：");Label tf_bookname = new Label("xx");Label lbauthor = new Label("作者：");Label tf_author = new Label("xx");Label lbpublisher = new Label("出版社：");Label tf_publisher = new Label("xx");Label lbpublish_time = new Label("出版时间：");Label tf_publish_time = new Label("xx");Label lbprice = new Label("定价：");Label tf_price = new Label("xx");Label lbstock = new Label("库存数量：");Label tf_stock = new Label("xx");Label lbreaderinfo = new Label(SepLine + "读者信息" + SepLine); Label lbreadername = new Label("读者姓名：");Label tf_readername = new Label("xx");Label lbreadertype = new Label("读者类型：");Label tf_readertype = new Label("xx");Label lbmax_num = new Label("最大可借数：");Label tf_max_num = new Label("xx");Label lbdays_num = new Label("最大可借天数：");Label tf_days_num = new Label("xx");Label lbborrowinfo = new Label(SepLine + "借阅信息" + SepLine); Label lbborrowednum = new Label("该读者已借图书数量："); Label tf_borrowednum = new Label("xx");Label lbif_borrow = new Label("该读者是否可借所选图书："); Label tf_if_borrow = new Label("xx");Label lbborrow_date = new Label("借阅日期：");Label tf_borrow_date = new Label("xx");Button borrowBtn = new Button("借出");Button closeBtn = new Button("关闭");public Borrow() {setLayout(null);setTitle("借阅图书");setSize(500, 420);this.setForeground(Color.BLACK); // 设置前景色为黑色lbbookid.setBounds(30, 40, 50, 25); // 图书编号tf_bookid.setBounds(90, 40, 90, 20);lbreaderid.setBounds(200, 40, 50, 25); // 读者编号tf_readerid.setBounds(260, 40, 90, 20);queryBtn.setBounds(370, 40, 80, 25); // 查询按钮lbbookinfo.setBounds(30, 70, 440, 25); // 图书信息提示条lbbookname.setBounds(30, 100, 60, 25); // 图书名称tf_bookname.setBounds(90, 100, 200, 25);lbauthor.setBounds(310, 100, 60, 25); // 作者tf_author.setBounds(370, 100, 90, 25);lbpublisher.setBounds(30, 125, 60, 25); // 出版社tf_publisher.setBounds(90, 125, 200, 25);lbpublish_time.setBounds(310, 125, 60, 25); // 出版时间tf_publish_time.setBounds(370, 125, 90, 25);lbprice.setBounds(30, 150, 60, 25); // 定价tf_price.setBounds(90, 150, 200, 25);lbstock.setBounds(310, 150, 60, 25); // 库存数量tf_stock.setBounds(370, 150, 90, 25);lbreaderinfo.setBounds(30, 180, 440, 25); // 读者信息提示条lbreadername.setBounds(30, 205, 60, 25); // 读者姓名tf_readername.setBounds(90, 205, 90, 25);lbreadertype.setBounds(310, 205, 60, 25); // 读者类型tf_readertype.setBounds(370, 205, 90, 25);lbmax_num.setBounds(30, 230, 75, 25); // 最大可借数tf_max_num.setBounds(105, 230, 90, 25);lbdays_num.setBounds(310, 230, 85, 25); // 最大可借天数tf_days_num.setBounds(395, 230, 70, 25);lbborrowinfo.setBounds(30, 260, 440, 25); // 借阅信息提示条lbborrowednum.setBounds(30, 285, 120, 25);// 已借图书数量tf_borrowednum.setBounds(150, 285, 50, 25);lbif_borrow.setBounds(30, 310, 145, 25); // 是否可借tf_if_borrow.setBounds(175, 310, 50, 25);lbborrow_date.setBounds(30, 335, 60, 25);// 借书日期tf_borrow_date.setBounds(90, 335, 100, 25);borrowBtn.setBounds(160, 365, 80, 25);// 借出按钮borrowBtn.setEnabled(false); // 开始时禁用借出按钮closeBtn.setBounds(260, 365, 80, 25);// 关闭按钮queryBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) { btn_querywActionPerformed(e); } }); borrowBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) { btn_borrowActionPerformed(e); } });closeBtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) { setForeground(Color.BLACK); dispose(); } }); this.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) {setForeground(Color.BLACK); // 设置前景色为黑色dispose(); // 关闭窗体}});add(lbbookid);add(lbreaderid);add(queryBtn);add(lbbookinfo);add(lbbookname);add(lbauthor);add(lbpublisher);add(lbpublish_time);add(lbprice);add(lbstock);add(lbreaderinfo);add(lbreadername);add(lbreadertype);add(lbmax_num);add(lbdays_num);add(lbborrowinfo);add(lbborrowednum);add(lbif_borrow);add(lbborrow_date);add(borrowBtn);add(closeBtn);setLocationRelativeTo(null); // 使窗体在屏幕上居中放置setVisible(true); // 使窗体可见setForeground(Color.RED); // 设置前景色为红色add(tf_bookid);add(tf_readerid);add(tf_bookname);add(tf_author);add(tf_publisher);add(tf_publish_time);add(tf_price);add(tf_stock);add(tf_readername);add(tf_readertype);add(tf_max_num);add(tf_days_num);add(tf_borrowednum);add(tf_if_borrow);add(tf_borrow_date);}// 图书和读者查询private void btn_querywActionPerformed(ActionEvent e) {String bookid = tf_bookid.getText();String readerid = tf_readerid.getText();// 如果图书编号或读者编号两者均为空，或者有一个为空，则返回if (bookid.equals("") || readerid.equals("")) {JOptionPane.showMessageDialog(null, "图书编号和读者编号均不能为空！");init(); // 重新初始化各参数并禁止借出按钮return;}// 按编号查询图书，结果存入book对象中Book book = BookSelect.SelectBookById(bookid);if (book != null) { // 如果查询到结果，将其显示在各文本框中tf_bookname.setText(book.getBookname());tf_author.setText(book.getAuthor());tf_publisher.setText(book.getPublisher());tf_publish_time.setText(book.getPublish_time().toString());tf_price.setText(String.valueOf((book.getPrice())));tf_stock.setText(String.valueOf(book.getStock()));} else {JOptionPane.showMessageDialog(null, "图书编号有误，查无此书！");init(); // 重新初始化各参数并禁止借出按钮return;}if (book.getStock() == 0) {JOptionPane.showMessageDialog(null, "图书已无库存，无法借阅！");init(); // 重新初始化各参数并禁止借出按钮return;}// 按编号查询读者，结果存入reader对象中Reader reader = ReaderSelect.selectReaderById(readerid);// 如果查询到结果，将其显示在各文本框中if (reader != null) {tf_readername.setText(reader.getReadername());tf_readertype.setText(reader.getReadertype());tf_max_num.setText(String.valueOf(reader.getMax_num()));tf_days_num.setText(String.valueOf(reader.getDays_num()));} else {JOptionPane.showMessageDialog(null, "读者编号有误，查无此人！");init(); // 重新初始化各参数并禁止借出按钮return;}// 查询指定读者是否已借过指定图书且未归还if (IfBorrowBack.findbook(bookid, readerid)) {JOptionPane.showMessageDialog(null, "该读者已借阅所选图书，且未归还！");init(); // 重新初始化各参数并禁止借出按钮return;}// 统计读者所借图书数量int borrowednum = statborrowednum(readerid);tf_borrowednum.setText(String.valueOf(borrowednum));// 如果读者已借图书尚未超出其允许最大借书量，则允许其继续借阅所选图书if (borrowednum < reader.getMax_num()) {tf_if_borrow.setText("是");// 创建一个简单日期格式对象，注意：MM一定要用大写SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");// 创建日期变量，其内容为当前日期Date currentdate = new Date();// 将日期按指定格式输出String borrowdate = sdf.format(currentdate);tf_borrow_date.setText(borrowdate);borrowBtn.setEnabled(true); // 使借出按钮有效} else {JOptionPane.showMessageDialog(null, "该读者借书过多，无法继续借阅！");init(); // 重新初始化各参数并禁止借出按钮return;}}// 填写借出图书记录private void btn_borrowActionPerformed(ActionEvent e) {String sql;String bookid = tf_bookid.getText();String readerid = tf_readerid.getText();String borrowdate = tf_borrow_date.getText();// 为borrow表增加借书记录sql = "insert into borrow (book_id,reader_id,"+ "borrow_date,if_back) values('" + bookid + "','" + readerid + "','" + borrowdate + "','否')";。

用 java 做的一个图书管理系统的源代码import .*;import .*;public class T{public static void main(String[] args) throws Exception{Connection conn=null;Statement stmt=null;ResultSet rs=null;while(true){Scanner scanner=new Scanner;"请输入用户名：");String username2=();"请输入密码：");String password2=();if(!("")||(""))){try{("");conn=("jdbc:odbc:book","","");String sql="select * from ww where username='"+username2+"'";stmt=();rs=(sql);if()){if("password").equals(password2)){"*********欢迎来山东科技大学图书馆管理系统********");while(true){" 1.图书信息");" 2. 读者信息");" 3. 管理员信息");" 4.借阅信息");" 5. 还书信息");" 6.逾期罚款或损坏赔偿信息");出");" 请输入选择功能的序号:"); int a=();switch(a){case 1:" 图书信息 : ");" 1. 查询图书信息 : ");" 2. 插入图书信息 : ");" 3. 删除图书信息 : ");" 4. 修改图书信息 : ");int a1=();switch(a1){case 1:" " "欢迎进入图书信息查询系统1. 无条件查询图书信息:2. 条件查询图书信息::");");");int d=();switch(d){case 1:int llll=0;无条件查询图书信息:");String Sql0 = "SELECT * FROM systembook ";rs= (Sql0);while()){String bookID =(1);String bookNo =(2);String bookName =(3);String bookWriter =(4);String bookPub =(5);","+bookNo+","+bookName+","+ bookWriter+","+bookPub);}"是否继续插入 yes/no no 返回主菜单 ");String k=();if("yes"))};if("no")){llll=1;};}break;条件查询图书信息 : ");" 1. 单条件查询图书信息: ");" 2. 模糊条件查询图书信息: ");" 3. 多表连接查询图书信息: ");" 4. 嵌套查询图书信息 : ");" 5. 谓词演算查询");int c12=();switch(c12){case 1:" 1.单条件查询 :");" 1.按图书名编码号查询图书信息:");int ddd=0;while(ddd!=1){"请输入图书编码号:");String A=();String sql1= "SELECT * FROM systembook WHERE bookID ='"+A+"' ";rs= (sql1);int x=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);x++;}if(x==0){" 查无此书 ,请重新输入 ");else{"是否继续按姓名查询yes/no no 返回主菜单 ");String k=();if("yes")){};if("no")){ddd=1;};};}break;case 2:" 2.模糊查询图书信息:");int dc=0;while(dc!=1){" 请用户输入图书名字中的模糊关键字");String E=();String sq123= "SELECT * FROM systembook WHERE bookName LIKE'"+E+"%'";rs= (sq123);int z=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);z++;}if(z==0){" 查无此书 ,请重新输入 ");}else{"是否继续输入图书名字中的模糊关键字yes/no no 返回主菜单 ");String k=();if("yes")){};if("no")){dc=1;表连接查询查询图书信息: ");int dq=0;while(dq!=1){" 查询逾期罚款或是赔偿表中的读者的相关信息");" 请输入逾期罚款或是赔偿的读者编码号");String F=();String sq1234= "SELECT * FROM fine,borrowbook,systemreader WHERE = AND = AND ='"+F+"' ";rs= (sq1234);int n=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);n++;}if(n==0){" 查无此人 ,请重新输入 ");}else{" 是否继续输入图书名字中的模糊关键字yes/no no 返回主菜单 ");if("yes")){};if("no")){ddd=1;};}}break;case 4:" 4.嵌套查询图书信息:");int dq1=0;while(dq1!=1){"查询某读者所在年级女读者的相关信息");"请输入某读者的读者编号");String G=();String sq12345= "SELECT * FROM systemreader WHERE reaGrade=(SELECT reaGrade FROM systemreader WHERE reaID='"+G+"') AND reasex='女'"; rs= (sq12345);int m=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);m++;}if(m==0){" 查无此书 ,请重新输入 ");}else{"是否继续输入读者编号yes/no no 返回主菜单 ");if("yes")){};if("no")){d=1;};}}break;case 5:" 5. 谓词演算查询：");int dq1123=0;while(dq1123!=1){"查询借阅了某本书的读者的相关信息");"请输入该书的名字");String H=();String sq123456= "SELECT* FROM systemreader WHERE reaID IN (SELECT reaID FROM borrowbook WHERE bookName='"+H+"')";rs= (sq123456);int l=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);l++;}if(l==0){" 查无此人 ,请重新输入 ");}else{" 是否继续输入图书名字yes/no no 返回主菜单");String k=();if("yes")){} ;if("no")){d=1;};}}break;}查询图书信息 :");String Sql = "SELECT * FROM systembook ";rs= (Sql);while()){插入图书信息: " 请按顺序插入图书条码号");,图书索书号,图书名字,图书作者,图书出版社");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];String a15=splitst[4];String insertSql="INSERT INTO systembook(bookID,bookNo,bookName,bookWriter,bookPub) VALUES('"+a11+"','"+a12+"','"+a13+"','"+a14+"','"+a15+"')";int i=(insertSql);删除图书信息:");"请输入要删除的图书编号:");String Str=();String []Splitst=(",");String b3=Splitst[0];String sql1="SELECT * FROM systembook where bookID='"+b3+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);String e22 =(5);String f22 =(6);","+b22+" ,"+c22+","+d22+","+e22+","+f22);kkk++;}if(kkk==0){"没有这本书，请重新输入");}else{{String deleSql= "DELETE FROM systembook WHEREbookID='"+b3+"'";int p=(deleSql);修改图书信息:");"请输入修改的图书ID");String S=();String sql1="SELECT * FROM systembook where bookID='"+S+"'";rs= (sql1);int lll=0;while()){String a222 =(1);String b222 =(2);String c222 =(3);String d222 =(4);String e222 =(5);String f222 =(6);","+b222+" ,"+c222+","+d222+","+e222+","+f222);lll++;}if(lll==0){"没有这本书，请重新输入");}else{"要将书名改为");String bbb=();String updateSql1="UPDATE systembook SET bookName='"+bbb+"' WHERE bookID='"+S+"'";int hh=(updateSql1);查询读者信息" 2. 插入读者信息 :");" 3. 删除读者信息 :");" 4. 修改读者信息:"int b1=();switch(b1){case 1:" 1. 查询读者信息 :"); :);");String ssql = "SELECT * FROM systemreader ";rs= (ssql);while()){插入读者信息 :");"请按顺序插入借书卡证号读者名字读者学号读者性别读者LBID 读者类型读者学院读者年级读者专业办证日期");String str=();String []splitst=(",");String b11=splitst[0];String b12=splitst[1];String b13=splitst[2];String b14=splitst[3];String b15=splitst[4];String b16=splitst[5];String b17=splitst[6];String b18=splitst[7];String b19=splitst[8];String b20=splitst[9];String insertSql="INSERT INTOsystemreader(reaID,reaName,reaNo,reaSex,reaLBID,reaType,reaDep,reaGrade,reaPre,reaDate) VALUES('"+b11+"','"+b12+"','"+b13+"','"+b14+"','"+b15+"','"+b16+"','"+b17+"','"+b18+"','"+b19+"' ,'"+b20+"')";int n=(insertSql);删除读者信息:");"请输入要删除的读者证号:");String Str=();String []Splitst=(",");String r=Splitst[0];String sql1="SELECT * FROM systemreader where reaID='"+r+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);String e22 =(5);String f22 =(6);String g22 =(7);String h22 =(8);String i22 =(9);","+b22+" ,"+c22+","+d22+","+e22+","+f22+","+g22+","+h22+","+i22);kkk++;}if(kkk==0){"没有这个读者，请重新输入");}else{修改读者信息:");"请输入修改以后的读者的ID ");String S=();查询管理员信息 : ");" 2. 插入管理员信息 : ");" 3. 删除管理员信息 : ");" 4. 修改管理员信息 : ");" 5. 返回上一级");int c11=();switch(c11){case 1:" 1. 查询管理员信息: ");String Ssql = "SELECT * FROM manager ";rs= (Ssql);while()){插入管理员信息 :");" 请按顺序插入管理员的编号，管理员的姓名,管理员的性别,所管书库，电话，地址 ");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];String a15=splitst[4];String a16=splitst[5];String insertSql="INSERT INTOmanager(mID,mName,mSex,mAuth,mTeleph,mAddre)VALUES('"+a11+"','"+a12+"','"+a13+"','"+a14+"','"+a15+"','"+a16+"')";int i=(insertSql);删除管理员信息:");"请输入要删除的管理员编号 :");String Str=();String []Splitst=(",");String b3=Splitst[0];String sql1="SELECT * FROM manager where mID='"+b3+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);String e22 =(5);String f22 =(6);","+b22+" ,"+c22+","+d22+","+e22+","+f22);kkk++;}if(kkk==0){"没有这个管理员，请重新输入");}else{修改管理员信息: ");" 请输入要修改的管理员编号：");String S=();String []Ssplitst=(",");String c1=Ssplitst[0];String sql1="SELECT * FROM manager where mID='"+S+"'";rs= (sql1);int lll=0;while()){String a222 =(1);String b222 =(2);String c222 =(3);String d222 =(4);String e222 =(5);String f222 =(6);","+b222+" ,"+c222+","+d222+","+e222+","+f222);lll++;}if(lll==0){"没有这个管理员，请重新输入");}else{查询图书借阅信息信息: ");" 2. 插入图书借阅信息 : ");" 3. 删除图书借阅信息 : ");" 4. 修改图书借阅信息 : ");" 5. 返回上一级");int d=();switch(d){case 1:" 1. 查询图书借阅信息:");String Sql4 = "SELECT * FROM borrowbook ";rs= (Sql4);while()){String bookID =(1);String reaID =(2);String outDate =(3);String yhDate =(4);","+reaID+","+outDate+","+yhDate);}break;case 2:int zz=0;while(zz!=1){" 2. 插入图书借阅信息:");"请按顺序插入图书的的编号 ,读者编号 ,图书借出日期 ,图书归还日期 ");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];删除图书借阅信息:");"请输入要删除的图书条码号 :");String Str=();String []Splitst=(",");String b3=Splitst[0];String sql1="SELECT * FROM borrowbook where bookID='"+b3+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);修改借阅读书信息:");"请输入要修改的图书的 ID ");String S=();String []Ssplitst=(",");String c1=Ssplitst[0];String sql1="SELECT * FROM borrowbook where bookID='"+S+"'";rs= (sql1);int lll=0;while()){String a222 =(1);String b222 =(2);String c222 =(3);String d222 =(4);查询还书信息 : ");" 2. 插入还书信息 : ");" 3. 删除还书信息 : ");" 4. 修改还书信息 : ");" 5. 返回上一级");int e=();switch(e){case 1:"1. 查询还书信息 : ");sql = "SELECT * FROM return ";rs= (sql);while()){String reaID =(1);String bookID =(2);String bookName =(3);String inDate =(4);","+bookID+","+bookName+","+ inDate);}break;case 2:" 2. 插入还书信息:");"请按顺序插入读者卡号 ,图书编号 ,图书名称 ,还书日期 ");String str=();String []splitst=(",");String e1=splitst[0];String e2=splitst[1];String e3=splitst[2];String e4=splitst[3];String insertSql="INSERT INTO returnbook(reaID,bookID,bookName,inDate) VALUES('"+e1+"','"+e2+"','"+e3+"','"+e4+"')";int h=(insertSql); 删除还书书信息: ");"请输入要删除的读者证号:");String Str=();String []Splitst=(",");String f3=Splitst[0];String deleSql= "DELETE FROM return WHERE reaID='"+f3+"'";int w=(deleSql);查询罚款信息:");" 2. 插入罚款信息 : ");" 3. 删除罚款信息 : ");" 4. 修改罚款信息 : ");int g=();switch(g){case 1:"1. 查询罚款信息 : ");String Sssql = "SELECT * FROM fine ";rs= (Sssql);while()){插入罚款信息 : ");" 请按顺序插入读者卡号 , 图书编号 ,借书日期，超出日期 ,应缴罚款 ");String str=();String []splitst=(",");String g1=splitst[0];String g2=splitst[1];String g3=splitst[2];String g4=splitst[3];String g5=splitst[4];删除罚款信息 : ");"请输入要删除的读者证号:");String Str=();String []Splitst=(",");String r=Splitst[0];String deleSql= "DELETE FROM fine WHERE reaID='"+r+"'";int x=(deleSql); 查询借阅历史信息 : ");" 2. 插入借阅历史信息 : ");" 3. 删除借阅历史信息 : ");" 4. 修改借阅历史信息 : ");" 5. 返回上一级");int h=();switch(h){case 1:" 1. 查询历史借阅信息:");String Sql7 = "SELECT * FROM borrowhistory ";rs= (Sql7);while()){String bookID =(1);String reaID =(2);String bookName=(3);String bookWriter=(4);String outDate =(5);String yhDate =(6);","+reaID+","+bookName+","+bookWriter+","+outDate+","+yhDate);}break;case 2:" 2. 插入图书历史借阅信息:");"请按顺序插入图书的的编号 ,读者编号 ,,图书借出日期 ,图书归还日期 ");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];删除图书历史借阅信息:");" 请输入要删除的图书条码号:");String Str=();String []Splitst=(",");String d3=Splitst[0];String deleSql= "DELETE bookID FROM borrowhistory WHERE bookID='"+d3+"'";int k=(deleSql);修改图书借阅历史信息" 请输入要修改的图书的借出日期String S=();:");");String []Ssplitst=(",");String c1=Ssplitst[0];String updateSql="UPDATE borrow SET outDate='"+c1+"' WHERE bookName=' 数据库 '";int t=(updateSql); // 返回记录影响的条数if(t!=0){" 修改成功 !");}break;}}}}}else{"非法用户！ ");}}catch(SQLException e) {();}//();();();}}}}。

用j a v a做的一个图书管理系统的源代码标准化文件发布号：（9312-EUATWW-MWUB-WUNN-INNUL-DQQTY-用java做的一个图书管理系统的源代码import .*;import .*;public class T{public static void main(String[] args) throws Exception{Connection conn=null;Statement stmt=null;ResultSet rs=null;while(true){Scanner scanner=new Scanner;"请输入用户名：");String username2=();"请输入密码：");String password2=();if(!("")||(""))){try{("");conn=("jdbc:odbc:book","","");String sql="select * from ww where username='"+username2+"'"; stmt=();rs=(sql);if()){if("password").equals(password2)){"*********欢迎来山东科技大学图书馆管理系统********"); while(true){" 1.图书信息 ");" 2.读者信息 ");" 3.管理员信息 ");" 4.借阅信息 ");" 5.还书信息 ");" 6.逾期罚款或损坏赔偿信息");出 ");" 请输入选择功能的序号 :");int a=();switch(a){case 1:" 图书信息: ");" 1. 查询图书信息: ");" 2. 插入图书信息: ");" 3. 删除图书信息: ");" 4. 修改图书信息: ");int a1=();switch(a1){case 1:" 欢迎进入图书信息查询系统: ");" 1. 无条件查询图书信息: ");" 2. 条件查询图书信息: ");int d=();switch(d){case 1:int llll=0;无条件查询图书信息: ");String Sql0 = "SELECT * FROM systembook ";rs= (Sql0);while()){String bookID =(1);String bookNo =(2);String bookName =(3);String bookWriter =(4);String bookPub =(5);","+bookNo+","+bookName+","+ bookWriter+","+bookPub); }"是否继续插入yes/no no返回主菜单");String k=();if("yes")){};if("no")){llll=1;};}break;条件查询图书信息: ");" 1. 单条件查询图书信息: ");" 2. 模糊条件查询图书信息: ");" 3. 多表连接查询图书信息: ");" 4. 嵌套查询图书信息: ");" 5. 谓词演算查询 ");int c12=();switch(c12){case 1:" 1.单条件查询: ");" 1.按图书名编码号查询图书信息: ");int ddd=0;while(ddd!=1){"请输入图书编码号:");String A=();String sql1= "SELECT * FROM systembook WHERE bookID ='"+A+"' ";rs= (sql1);int x=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);x++;}if(x==0){"查无此书,请重新输入");}else{"是否继续按姓名查询yes/no no返回主菜单");String k=();if("yes")){};if("no")){ddd=1;};};}break;case 2:" 2.模糊查询图书信息: ");int dc=0;while(dc!=1){"请用户输入图书名字中的模糊关键字");String E=();String sq123= "SELECT * FROM systembook WHERE bookName LIKE'"+E+"%'";rs= (sq123);int z=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);z++;}if(z==0){"查无此书,请重新输入");else{"是否继续输入图书名字中的模糊关键字yes/no no返回主菜单");String k=();if("yes")){};if("no")){dc=1;表连接查询查询图书信息: ");int dq=0;while(dq!=1){"查询逾期罚款或是赔偿表中的读者的相关信息");"请输入逾期罚款或是赔偿的读者编码号");String F=();String sq1234= "SELECT * FROM fine,borrowbook,systemreader WHERE = AND = AND ='"+F+"' ";rs= (sq1234);int n=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);n++;}if(n==0){"查无此人,请重新输入");}else{"是否继续输入图书名字中的模糊关键字yes/no no返回主菜单");String k=();if("yes")){};if("no")){ddd=1;};}}break;case 4:" 4.嵌套查询图书信息: ");int dq1=0;while(dq1!=1){"查询某读者所在年级女读者的相关信息");"请输入某读者的读者编号");String G=();String sq12345= "SELECT * FROM systemreader WHERE reaGrade=(SELECT reaGrade FROM systemreader WHERE reaID='"+G+"') AND reasex='女'";rs= (sq12345);int m=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);m++;}if(m==0){"查无此书,请重新输入");}else{"是否继续输入读者编号yes/no no返回主菜单");String k=();if("yes"))};if("no")){d=1;};}}break;case 5:" 5. 谓词演算查询： ");int dq1123=0;while(dq1123!=1){"查询借阅了某本书的读者的相关信息");"请输入该书的名字");String H=();String sq123456= "SELECT * FROM systemreader WHERE reaID IN (SELECT reaID FROM borrowbook WHERE bookName='"+H+"')";rs= (sq123456);int l=0;while()){String a2 =(1);String b2 =(2);String c2 =(3);String d2 =(4);String e2 =(5);","+b2+" ,"+c2+","+d2+","+e2);l++;}if(l==0){"查无此人,请重新输入");}else{"是否继续输入图书名字yes/no no返回主菜单");String k=();if("yes")){};if("no")){d=1;};}}break;}查询图书信息: ");String Sql = "SELECT * FROM systembook ";rs= (Sql);while()){插入图书信息: ");"请按顺序插入图书条码号,图书索书号,图书名字,图书作者,图书出版社");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];String a15=splitst[4];String insertSql="INSERT INTOsystembook(bookID,bookNo,bookName,bookWriter,bookPub)VALUES('"+a11+"','"+a12+"','"+a13+"','"+a14+"','"+a15+"')";int i=(insertSql); 删除图书信息: ");"请输入要删除的图书编号:");String Str=();String []Splitst=(",");String b3=Splitst[0];String sql1="SELECT * FROM systembook where bookID='"+b3+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);String e22 =(5);String f22 =(6);","+b22+" ,"+c22+","+d22+","+e22+","+f22);kkk++;}if(kkk==0){"没有这本书，请重新输入");}else{{String deleSql= "DELETE FROM systembook WHERE bookID='"+b3+"'";int p=(deleSql); 修改图书信息: ");"请输入修改的图书ID ");String S=();String sql1="SELECT * FROM systembook where bookID='"+S+"'"; rs= (sql1);int lll=0;while()){String a222 =(1);String b222 =(2);String c222 =(3);String d222 =(4);String e222 =(5);String f222 =(6);","+b222+" ,"+c222+","+d222+","+e222+","+f222);lll++;}if(lll==0){"没有这本书，请重新输入");}else{"要将书名改为");String bbb=();String updateSql1="UPDATE systembook SET bookName='"+bbb+"' WHERE bookID='"+S+"'";int hh=(updateSql1); 查询读者信息: ");" 2. 插入读者信息: ");" 3. 删除读者信息: ");" 4. 修改读者信息: " );int b1=();switch(b1){case 1:" 1. 查询读者信息: ");String ssql = "SELECT * FROM systemreader ";rs= (ssql);while()){插入读者信息: ");"请按顺序插入借书卡证号读者名字读者学号读者性别读者LBID 读者类型读者学院读者年级读者专业办证日期");String str=();String []splitst=(",");String b11=splitst[0];String b12=splitst[1];String b13=splitst[2];String b14=splitst[3];String b15=splitst[4];String b16=splitst[5];String b17=splitst[6];String b18=splitst[7];String b19=splitst[8];String b20=splitst[9];String insertSql="INSERT INTOsystemreader(reaID,reaName,reaNo,reaSex,reaLBID,reaType,reaDep,reaGrade,reaPr e,reaDate)VALUES('"+b11+"','"+b12+"','"+b13+"','"+b14+"','"+b15+"','"+b16+"','"+b17+"','"+b18 +"','"+b19+"','"+b20+"')";int n=(insertSql); 删除读者信息: ");"请输入要删除的读者证号:");String Str=();String []Splitst=(",");String r=Splitst[0];String sql1="SELECT * FROM systemreader where reaID='"+r+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);String e22 =(5);String f22 =(6);String g22 =(7);String h22 =(8);String i22 =(9);","+b22+" ,"+c22+","+d22+","+e22+","+f22+","+g22+","+h22+","+i22); kkk++;}if(kkk==0){"没有这个读者，请重新输入");}else{修改读者信息: ");"请输入修改以后的读者的ID ");String S=();查询管理员信息: ");" 2. 插入管理员信息: ");" 3. 删除管理员信息: ");" 4. 修改管理员信息: ");" 5. 返回上一级 ");int c11=();switch(c11){case 1:" 1. 查询管理员信息: ");String Ssql = "SELECT * FROM manager ";rs= (Ssql);while()){插入管理员信息: ");"请按顺序插入管理员的编号，管理员的姓名,管理员的性别,所管书库，电话，地址");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];String a15=splitst[4];String a16=splitst[5];String insertSql="INSERT INTOmanager(mID,mName,mSex,mAuth,mTeleph,mAddre)VALUES('"+a11+"','"+a12+"','"+a13+"','"+a14+"','"+a15+"','"+a16+"')";int i=(insertSql); 删除管理员信息: ");"请输入要删除的管理员编号:");String Str=();String []Splitst=(",");String b3=Splitst[0];String sql1="SELECT * FROM manager where mID='"+b3+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);String e22 =(5);String f22 =(6);","+b22+" ,"+c22+","+d22+","+e22+","+f22);kkk++;}if(kkk==0){"没有这个管理员，请重新输入");}else{修改管理员信息: ");"请输入要修改的管理员编号： ");String S=();String []Ssplitst=(",");String c1=Ssplitst[0];String sql1="SELECT * FROM manager where mID='"+S+"'"; rs= (sql1);int lll=0;while()){String a222 =(1);String b222 =(2);String c222 =(3);String d222 =(4);String e222 =(5);String f222 =(6);","+b222+" ,"+c222+","+d222+","+e222+","+f222); lll++;}if(lll==0){"没有这个管理员，请重新输入");}else{查询图书借阅信息信息: ");" 2. 插入图书借阅信息: ");" 3. 删除图书借阅信息: ");" 4. 修改图书借阅信息: ");" 5. 返回上一级 ");int d=();switch(d){case 1:" 1. 查询图书借阅信息: ");String Sql4 = "SELECT * FROM borrowbook ";rs= (Sql4);while()){String bookID =(1);String reaID =(2);String outDate =(3);String yhDate =(4);","+reaID+","+outDate+","+yhDate);}break;case 2:int zz=0;while(zz!=1){" 2. 插入图书借阅信息: ");"请按顺序插入图书的的编号,读者编号,图书借出日期,图书归还日期");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];删除图书借阅信息: ");"请输入要删除的图书条码号:");String Str=();String []Splitst=(",");String b3=Splitst[0];String sql1="SELECT * FROM borrowbook where bookID='"+b3+"'";rs= (sql1);int kkk=0;while()){String a22 =(1);String b22 =(2);String c22 =(3);String d22 =(4);修改借阅读书信息: ");"请输入要修改的图书的ID ");String S=();String []Ssplitst=(",");String c1=Ssplitst[0];String sql1="SELECT * FROM borrowbook where bookID='"+S+"'";rs= (sql1);int lll=0;while()){String a222 =(1);String b222 =(2);String c222 =(3);String d222 =(4);查询还书信息: ");" 2. 插入还书信息: ");" 3. 删除还书信息: ");" 4. 修改还书信息: ");" 5. 返回上一级 ");int e=();switch(e){case 1:" 1. 查询还书信息: ");sql = "SELECT * FROM return ";rs= (sql);while()){String reaID =(1);String bookID =(2);String bookName =(3);String inDate =(4);","+bookID+","+bookName+","+ inDate);}break;case 2:" 2. 插入还书信息: ");"请按顺序插入读者卡号,图书编号,图书名称,还书日期");String str=();String []splitst=(",");String e1=splitst[0];String e2=splitst[1];String e3=splitst[2];String e4=splitst[3];String insertSql="INSERT INTOreturnbook(reaID,bookID,bookName,inDate)VALUES('"+e1+"','"+e2+"','"+e3+"','"+e4+"')";int h=(insertSql); 删除还书书信息: ");"请输入要删除的读者证号:");String Str=();String []Splitst=(",");String f3=Splitst[0];String deleSql= "DELETE FROM return WHERE reaID='"+f3+"'";int w=(deleSql); 查询罚款信息: ");" 2. 插入罚款信息: ");" 3. 删除罚款信息: ");" 4. 修改罚款信息: ");int g=();switch(g){case 1:" 1. 查询罚款信息: ");String Sssql = "SELECT * FROM fine ";rs= (Sssql);while()){插入罚款信息: ");"请按顺序插入读者卡号,图书编号,借书日期，超出日期,应缴罚款");String str=();String []splitst=(",");String g1=splitst[0];String g2=splitst[1];String g3=splitst[2];String g4=splitst[3];String g5=splitst[4];删除罚款信息: ");"请输入要删除的读者证号:");String Str=();String []Splitst=(",");String r=Splitst[0];String deleSql= "DELETE FROM fine WHERE reaID='"+r+"'";int x=(deleSql); 查询借阅历史信息: ");" 2. 插入借阅历史信息: ");" 3. 删除借阅历史信息: ");" 4. 修改借阅历史信息: ");" 5. 返回上一级 ");int h=();switch(h){case 1:" 1. 查询历史借阅信息: ");String Sql7 = "SELECT * FROM borrowhistory ";rs= (Sql7);while()){String bookID =(1);String reaID =(2);String bookName=(3);String bookWriter=(4);String outDate =(5);String yhDate =(6);","+reaID+","+bookName+","+bookWriter+","+outDate+","+yhDate);}break;case 2:" 2. 插入图书历史借阅信息: ");"请按顺序插入图书的的编号,读者编号,,图书借出日期,图书归还日期");String str=();String []splitst=(",");String a11=splitst[0];String a12=splitst[1];String a13=splitst[2];String a14=splitst[3];删除图书历史借阅信息: ");"请输入要删除的图书条码号:");String Str=();String []Splitst=(",");String d3=Splitst[0];String deleSql= "DELETE bookID FROM borrowhistory WHEREbookID='"+d3+"'";int k=(deleSql); 修改图书借阅历史信息: ");"请输入要修改的图书的借出日期 ");String S=();String []Ssplitst=(",");String c1=Ssplitst[0];String updateSql="UPDATE borrow SET outDate='"+c1+"' WHERE bookName='数据库'";int t=(updateSql); //返回记录影响的条数if(t!=0){"修改成功!");}break;}}}}}else{"非法用户！");}}catch(SQLException e) { ();}//();();();}}}}。