管理員登錄圖書借閱信息管理圖書信息管理管理員更改密碼退出系統

Eclipse Version: 2018-09 (4.9.0)MySQL Workbench 8.0 CEmysql-connector-java-8.0.13.jar

登錄界面：

主界面：

借閱書籍管理：

個人書庫管理：

更改密碼：

1）圖書表

2）用戶表

兩個數據表間沒有關聯：

（1）邏輯圖

（2）包結構，采用MVC三層架構組織各個模塊

Dao類（以BookDao為例）

package pers.cyz.dao; import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import java.util.ArrayList;import java.util.List; import pers.cyz.model.Book;import pers.cyz.util.DBUtil; /** * 數據庫圖書表信息數據訪問對象類，包含增加圖書信息、刪除圖書信息 * 、更新圖書信息、查詢圖書信息、查詢借閱信息和歸還圖書 * * @author 1651200111 陳彥志 */public class BookDao { /** * 增加圖書信息 */ public void addBook(Book book) throws Exception{ // 首先拿到數據庫的連接 Connection con = DBUtil.getConnection(); String sql='insert into tb_books' // ISBN、書名、圖書價格、圖書作者、出版社 + '(ISBN, book_name, book_price, book_author, published_house,' // 分類號、借書人姓名、借書人電話、借書日期，已借天數 + 'book_category, borrower_name, borrower_phone) ' + 'values(' /* * 參數用?表示，相當于占位符，然后在對參數進行賦值。當真正執行時， * 這些參數會加載在SQL語句中，把SQL語句拼接完整才去執行。這樣就會減少對數據庫的操作 */ + '?,?,?,?,?,?,?,?)'; /* * prepareStatement這個方法會將SQL語句加載到驅動程序conn集成程序中， * 但是并不直接執行,而是當它調用execute()方法的時候才真正執行； */ PreparedStatement psmt = con.prepareStatement(sql); // 先對應SQL語句，給SQL語句傳遞參數 psmt.setString(1, book.getISBN()); psmt.setString(2, book.getBookName()); psmt.setFloat(3, book.getPrice()); psmt.setString(4, book.getAuthor()); psmt.setString(5, book.getPublishHouse()); psmt.setString(6, book.getBookCategory()); if (book.getBorrowerName() == null || book.getBorrowerName() == '') { psmt.setString(7, null); } else { psmt.setString(7, book.getBorrowerName()); } if (book.getBorrowerPhone() == null || book.getBorrowerPhone() == '') { psmt.setString(8, null); } else { psmt.setString(8, book.getBorrowerPhone()); } //執行SQL語句 psmt.execute(); } /** * 刪除圖書信息 */ public void delBook(int ID) throws SQLException{ // 首先拿到數據庫的連接 Connection con=DBUtil.getConnection(); String sql='' + 'DELETE FROM tb_books '+ // 參數用?表示，相當于占位符 'WHERE ID = ?'; // 預編譯sql語句 PreparedStatement psmt = con.prepareStatement(sql); // 先對應SQL語句，給SQL語句傳遞參數 psmt.setInt(1, ID); // 執行SQL語句 psmt.execute(); } /** * 更新圖書信息 */ public void changeBook(Book book) throws SQLException{ // 首先拿到數據庫的連接 Connection con=DBUtil.getConnection(); String sql='update tb_books ' + 'set ISBN = ?, book_name = ?, book_price = ?, book_author = ?' + ',published_house = ?, book_category = ?, borrower_name = ?, borrower_phone = ? ' // 參數用?表示，相當于占位符 + 'where ID = ?'; // 預編譯sql語句 PreparedStatement psmt = con.prepareStatement(sql); // 先對應SQL語句，給SQL語句傳遞參數 psmt.setString(1, book.getISBN()); psmt.setString(2, book.getBookName()); psmt.setFloat(3, book.getPrice()); psmt.setString(4, book.getAuthor()); psmt.setString(5, book.getPublishHouse()); psmt.setString(6, book.getBookCategory()); if (book.getBorrowerName().equals('')) { psmt.setString(7, null); } else { psmt.setString(7, book.getBorrowerName()); } if (book.getBorrowerPhone().equals('')) { psmt.setString(8, null); } else { psmt.setString(8, book.getBorrowerPhone()); } psmt.setInt(9, book.getID()); // 執行SQL語句 psmt.execute(); } /** * 查詢書籍信息 */public List<Book> query() throws Exception{ Connection con = DBUtil.getConnection(); Statement stmt = con.createStatement(); ResultSet rs = stmt.executeQuery('select '// ISBN、書名、作者、圖書價格、出版社+ 'ID, ISBN, book_name, book_author, book_price, published_house, '// 分類號、借書人姓名、借書人電話+ 'book_category, borrower_name, borrower_phone '+ 'from tb_books'); List<Book> bookList = new ArrayList<Book>(); Book book = null; // 如果對象中有數據，就會循環打印出來while (rs.next()){ book = new Book(); book.setID(rs.getInt('ID'));book.setISBN(rs.getString('ISBN'));book.setBookName(rs.getString('book_name')); book.setAuthor(rs.getString('book_author'));book.setPrice(rs.getFloat('book_price'));book.setPublishHouse(rs.getString('published_house'));book.setBookCategory(rs.getString('book_category'));book.setBorrowerName(rs.getString('borrower_name'));book.setBorrowerPhone(rs.getString('borrower_phone'));bookList.add(book); } return bookList; } /** * 查詢借閱信息 * * @return * bookList */public List<Book> borrowQuery() throws Exception{ Connection con = DBUtil.getConnection(); Statement stmt = con.createStatement(); ResultSet rs = stmt.executeQuery(''// ID、書名、借書人姓名、借書人電話+ 'SELECT ID, book_name, borrower_name, borrower_phone '+ 'FROM tb_books '+ 'WHERE borrower_name IS NOT NULL'); List<Book> bookList = new ArrayList<Book>(); Book book = null; // 如果對象中有數據，就會循環打印出來while (rs.next()){ book = new Book(); book.setID(rs.getInt('ID'));book.setBookName(rs.getString('book_name')); book.setBorrowerName(rs.getString('borrower_name'));book.setBorrowerPhone(rs.getString('borrower_phone'));bookList.add(book); } return bookList; } /** * 更新圖書信息，歸還圖書 */ public void returnBook(Book book) throws SQLException{ // 首先拿到數據庫的連接 Connection con=DBUtil.getConnection(); String sql='UPDATE tb_books ' // ISBN、圖書名稱、作者、價格 + 'SET ' // 借書人姓名、借書人電話 + 'borrower_name = ?, borrower_phone = ? ' // 參數用?表示，相當于占位符 + 'WHERE ID = ?'; // 預編譯sql語句 PreparedStatement psmt = con.prepareStatement(sql); // 先對應SQL語句，給SQL語句傳遞參數 psmt.setString(1, book.getBorrowerName()); psmt.setString(2, book.getBorrowerPhone()); psmt.setInt(3, book.getID()); // 執行SQL語句 psmt.execute(); } }

重點內容 ：

JDBC進行簡單的數據庫增刪改查

詳細參考：https://www.cnblogs.com/Qian123/p/5339164.html#_labelTop

Model類（以Book為例）

package pers.cyz.model; /** * 圖書模型類,包含數據庫圖書表各對應的字段get、set方法 * * @author 1651200111 陳彥志 */public class Book {private int ID;// ISBN號private String ISBN;// 圖書名稱private String bookName;// 圖書價格private float price;// 圖書作者private String author;// 出版社private String publishedHouse;// 圖書分類號private String bookCategory;// 借書人姓名private String borrowerName;// 借書人電話private String borrowerPhone; /** * 獲取ID */public int getID() {return ID;}/** * 設置ID */public void setID(int iD) {ID = iD;}/** * 獲取ISBN */public String getISBN() {return ISBN;}/** * 設置ISBN */public void setISBN(String iSBN) {ISBN = iSBN;}/** * 獲取圖書名稱 */public String getBookName() {return bookName;}/** * 設置圖書名稱 */public void setBookName(String bookName) {this.bookName = bookName;}/** * 獲取圖書價格 */public float getPrice() {return price;}/** * 設置圖書價格 */public void setPrice(float price) {this.price = price;}/** * 獲取圖書作者 */public String getAuthor() {return author;}/** * 設置圖書作者 */public void setAuthor(String author) {this.author = author;}/** * 獲取出版社 */public String getPublishHouse() {return publishedHouse;}/** * 設置出版社 */public void setPublishHouse(String publishedHouse) {this.publishedHouse = publishedHouse;}/** * 獲取圖書分類信息 */public String getBookCategory() {return bookCategory;}/** * 設置圖書分類信息 */public void setBookCategory(String bookCategory) {this.bookCategory = bookCategory;}/** * 獲取借書人姓名 */public String getBorrowerName() {return borrowerName;}/** * 設置借書人姓名 */public void setBorrowerName(String borrowerName) {this.borrowerName = borrowerName;}/** * 獲取借書人電話 */public String getBorrowerPhone() {return borrowerPhone;}/** * 設置借書人電話 */public void setBorrowerPhone(String borrowerPhone) {this.borrowerPhone = borrowerPhone;} }

重點內容 ：

主要就是數據庫對應表中各對應的字段get、set方法

Eclipse技巧：

Shift + alt + s -> Generate Getters and Setters -> Select all -> Generate 自動生成set、get方法

Controller類（以BookAction為例）

package pers.cyz.controller; import java.util.List; import javax.swing.JTable;import javax.swing.JTextField; import pers.cyz.dao.BookDao;import pers.cyz.model.Book; /** * 圖書信息行為控制類，包含增加圖書、刪除圖書 * 、 修改圖書、和初始化個人書庫管理窗體表格 * * @author 1651200111 陳彥志 */public class BookAction { /** * 初始化窗體表格 * @return * results */@SuppressWarnings('rawtypes')public Object[][] initializTable(String[] columnNames) throws Exception{BookDao bookDao = new BookDao();List list = bookDao.query();Object[][] results = new Object[list.size()][columnNames.length];for(int i = 0; i < list.size(); i++) {Book book = (Book)list.get(i);results[i][0] = book.getID();results[i][1] = book.getBookName();results[i][2] = book.getAuthor();results[i][3] = book.getPrice();results[i][4] = book.getISBN();results[i][5] = book.getPublishHouse();results[i][6] = book.getBookCategory();String borrowerName = book.getBorrowerName();if (borrowerName == null) {borrowerName = '';results[i][7] = borrowerName;}else {results[i][7] = borrowerName;}String borrowerPhone = book.getBorrowerPhone();if (borrowerPhone == null) {borrowerPhone = '';results[i][8] = borrowerPhone;}else {results[i][8] = borrowerPhone;}} return results;} /** * 添加圖書信息 */public void addBookInformation (JTextField textFieldISBN, JTextField textFieldName,JTextField textFieldPrice, JTextField textFieldAuthor, JTextField textFieldPublishedHouse, JTextField textFieldBookCategory, JTextField textFieldBorrowName, JTextField textFieldBorrowPhone) throws Exception { BookDao bookDao=new BookDao(); Book book=new Book(); book.setISBN(textFieldISBN.getText()); book.setBookName(textFieldName.getText()); float price = Float.parseFloat(textFieldPrice.getText()); book.setPrice(price); book.setAuthor(textFieldAuthor.getText()); book.setPublishHouse(textFieldPublishedHouse.getText()); book.setBookCategory(textFieldBookCategory.getText()); if (textFieldBorrowName.getText() == null ||textFieldBorrowName.getText() == '' ) { book.setBorrowerName(null); } else { book.setBorrowerName(textFieldBorrowName.getText()); } if (textFieldBorrowPhone.getText() == null || textFieldBorrowPhone.getText() == '') { book.setBorrowerPhone(null); } else { book.setBorrowerPhone(textFieldBorrowPhone.getText()); } //添加圖書 bookDao.addBook(book);} /** * 刪除圖書信息 */public void delBookInformation (JTable table) throws Exception {int selRow = table.getSelectedRow();int ID = Integer.parseInt(table.getValueAt(selRow, 0).toString()); BookDao bookDao=new BookDao(); Book book=new Book(); book.setID(ID); // 刪除圖書信息 bookDao.delBook(ID);}/** * 修改圖書信息 */public void changeBookInformation (JTextField textFieldISBN, JTextField textFieldName,JTextField textFieldPrice, JTextField textFieldAuthor, JTextField textFieldPublishedHouse, JTextField textFieldBookCategory, JTextField textFieldBorrowerName, JTextField textFieldBorrowerPhone, JTable table) throws Exception{ BookDao bookDao=new BookDao(); Book book=new Book(); int selRow = table.getSelectedRow();int ID = Integer.parseInt(table.getValueAt(selRow, 0).toString()); book.setID(ID); book.setISBN(textFieldISBN.getText()); book.setBookName(textFieldName.getText()); book.setAuthor(textFieldAuthor.getText()); float price = Float.parseFloat(textFieldPrice.getText()); book.setPrice(price); book.setPublishHouse(textFieldPublishedHouse.getText()); book.setBookCategory(textFieldBookCategory.getText()); book.setBorrowerName(textFieldBorrowerName.getText()); book.setBorrowerPhone(textFieldBorrowerPhone.getText()); //修改圖書 bookDao.changeBook(book); }}

util類（以DBUtil為例）

package pers.cyz.util; import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException; /** * 連接數據庫類，包含一個對外提供獲取數據庫連接的方法 * * @author 1651200111 陳彥志 */public class DBUtil {// 數據庫連接路徑private static final String URL = 'jdbc:mysql://127.0.0.1:3306/db_books?'+ 'useUnicode = true & serverTimezone = GMT'// MySQL在高版本需要指明是否進行SSL連接+ '& characterEncoding = utf8 & useSSL = false';private static final String NAME = 'root';private static final String PASSWORD = 'root';private static Connection conn = null;// 靜態代碼塊（將加載驅動、連接數據庫放入靜態塊中） static{ try { // 加載驅動程序 Class.forName('com.mysql.cj.jdbc.Driver'); // 獲取數據庫的連接 conn = DriverManager.getConnection(URL, NAME, PASSWORD); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); } } // 對外提供一個方法來獲取數據庫連接 public static Connection getConnection(){ return conn; }}

util類（以BackgroundImage為例）

package pers.cyz.util; import java.awt.Container; import javax.swing.ImageIcon;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel; /** * 設置背景圖片類 * * @author 1651200111 陳彥志 */public class BackgroundImage {public BackgroundImage(JFrame frame,Container container,String ImageName) {// 限定加載圖片路徑ImageIcon icon= new ImageIcon('res/' + ImageName);final JLabel labelBackground = new JLabel();ImageIcon iconBookManageSystemBackground = icon;labelBackground.setIcon(iconBookManageSystemBackground);// 設置label的大小labelBackground.setBounds(0,0,iconBookManageSystemBackground.getIconWidth(),iconBookManageSystemBackground.getIconHeight());// 將背景圖片標簽放入桌面面板的最底層frame.getLayeredPane().add(labelBackground,new Integer(Integer.MIN_VALUE));// 將容器轉換為面板設置為透明JPanel panel = (JPanel)container;panel.setOpaque(false);} }

重點內容 ：

將圖片標簽放在窗體底層面板，然后將窗體轉化為容器，將容器面板設為透明，背景圖片就設置好了，之后就可以直接在該容器中添加組件

將所有兩個或兩個以上類需要用到的代碼段全部封裝到了公共類。整體按照MVC三層架構組織

參考文章：https://www.cnblogs.com/Qian123/p/5339164.html#_labelTop

參考文章：https://blog.csdn.net/acm_hmj/article/details/52830920

源碼打包下載地址：www.jb51.net/codes/769916.html

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