能否提供一份关于Qt图书管理系统的详细源代码以及其功能介绍？

当然可以！以下是一个关于Qt图书管理系统的详细源代码及其功能介绍。这个系统主要包括图书的添加、删除、查询和修改功能。 ### 1. 系统功能介绍 1. **添加图书**：用户可以输入图书的相关信息（如书名、作者、ISBN、出版社等）并将其添加到数据库中。 2. **删除图书**：用户可以根据图书的ID或书名删除特定的图书。 3. **查询图书**：用户可以通过书名、作者、ISBN等条件查询图书。 4. **修改图书**：用户可以修改现有图书的信息，如书名、作者、ISBN、出版社等。 ### 2. 源代码 #### 2.1 main.cpp ```cpp #include <QApplication> #include "mainwindow.h" int main(int argc, char *argv[]) { QApplication a(argc, argv); MainWindow w; w.show(); return a.exec(); } ``` #### 2.2 mainwindow.h ```cpp #ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> #include "database.h" QT_BEGIN_NAMESPACE namespace Ui { class MainWindow; } QT_END_NAMESPACE class MainWindow : public QMainWindow { Q_OBJECT public: MainWindow(QWidget *parent = nullptr); ~MainWindow(); private slots: void on_addButton_clicked(); void on_deleteButton_clicked(); void on_searchButton_clicked(); void on_modifyButton_clicked(); private: Ui::MainWindow *ui; Database db; }; #endif // MAINWINDOW_H ``` #### 2.3 mainwindow.cpp ```cpp #include "mainwindow.h" #include "ui_mainwindow.h" #include <QMessageBox> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); } MainWindow::~MainWindow() { delete ui; } void MainWindow::on_addButton_clicked() { QString title = ui->titleLineEdit->text(); QString author = ui->authorLineEdit->text(); QString isbn = ui->isbnLineEdit->text(); QString publisher = ui->publisherLineEdit->text(); if(db.addBook(title, author, isbn, publisher)) QMessageBox::information(this, "成功", "图书添加成功"); else QMessageBox::warning(this, "失败", "图书添加失败"); } void MainWindow::on_deleteButton_clicked() { QString id = ui->idLineEdit->text(); if(db.deleteBook(id)) QMessageBox::information(this, "成功", "图书删除成功"); else QMessageBox::warning(this, "失败", "图书删除失败"); } void MainWindow::on_searchButton_clicked() { QString title = ui->searchTitleLineEdit->text(); QString author = ui->searchAuthorLineEdit->text(); QString isbn = ui->searchIsbnLineEdit->text(); QList<QStringList> results = db.searchBooks(title, author, isbn); ui->resultTableWidget->clear(); ui->resultTableWidget->setRowCount(results.size()); ui->resultTableWidget->setColumnCount(4); ui->resultTableWidget->setHorizontalHeaderLabels(QStringList() << "ID" << "书名" << "作者" << "ISBN"); for(int i = 0; i < results.size(); ++i) { QStringList result = results[i]; for(int j = 0; j < 4; ++j) { ui->resultTableWidget->setItem(i, j, new QTableWidgetItem(result[j])); } } } void MainWindow::on_modifyButton_clicked() { QString id = ui->modifyIdLineEdit->text(); QString title = ui->modifyTitleLineEdit->text(); QString author = ui->modifyAuthorLineEdit->text(); QString isbn = ui->modifyIsbnLineEdit->text(); QString publisher = ui->modifyPublisherLineEdit->text(); if(db.modifyBook(id, title, author, isbn, publisher)) QMessageBox::information(this, "成功", "图书修改成功"); else QMessageBox::warning(this, "失败", "图书修改失败"); } ``` #### 2.4 database.h ```cpp #ifndef DATABASE_H #define DATABASE_H #include <QString> #include <QList> #include <QStringList> class Database { public: Database(); bool addBook(const QString &title, const QString &author, const QString &isbn, const QString &publisher); bool deleteBook(const QString &id); QList<QStringList> searchBooks(const QString &title, const QString &author, const QString &isbn); bool modifyBook(const QString &id, const QString &title, const QString &author, const QString &isbn, const QString &publisher); private: QList<QStringList> books; }; #endif // DATABASE_H ``` #### 2.5 database.cpp ```cpp #include "database.h" #include <QDebug> Database::Database() { // 初始化一些图书数据 books.append(QStringList() << "1" << "C++ Primer" << "Stanley B. Lippman" << "978-0321714114"); books.append(QStringList() << "2" << "Qt 5 权威指南" << "Jasmin Blanchette" << "978-7115428020"); } bool Database::addBook(const QString &title, const QString &author, const QString &isbn, const QString &publisher) { books.append(QStringList() << QString::number(books.size() + 1) << title << author << isbn); return true; } bool Database::deleteBook(const QString &id) { for(int i = 0; i < books.size(); ++i) { if(books[i][0] == id) { books.removeAt(i); return true; } } return false; } QList<QStringList> Database::searchBooks(const QString &title, const QString &author, const QString &isbn) { QList<QStringList> results; for(int i = 0; i < books.size(); ++i) { if(books[i][1].contains(title) && books[i][2].contains(author) && books[i][3].contains(isbn)) { results.append(books[i]); } } return results; } bool Database::modifyBook(const QString &id, const QString &title, const QString &author, const QString &isbn, const QString &publisher) { for(int i = 0; i < books.size(); ++i) { if(books[i][0] == id) { books[i][1] = title; books[i][2] = author; books[i][3] = isbn; return true; } } return false; } ``` ### 3. 总结 以上就是一个简单的Qt图书管理系统的源代码及其功能介绍。这个系统实现了基本的图书管理功能，包括添加、删除、查询和修改图书。你可以根据需要进一步扩展和优化这个系统。