图书信息管理模块实现
1.数据库t_book表，主键id为bigint类型，type_id为bigint类型（图书所属类别的id）
文章图片
image.png 2.录入一些数据，注意type_id字段，一定要是t_type表存在的id
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image.png 3.图书实体类Book.java
package com.soft1841.book.entity;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleLongProperty;
import javafx.beans.property.SimpleStringProperty;
/**
* 图书实体类
*/
public class Book {
private final SimpleLongProperty id = new SimpleLongProperty();
private final SimpleLongProperty typeId = new SimpleLongProperty();
private final SimpleStringProperty name = new SimpleStringProperty("");
private final SimpleStringProperty author = new SimpleStringProperty("");
private final SimpleDoubleProperty price = new SimpleDoubleProperty();
private final SimpleStringProperty cover = new SimpleStringProperty("");
private final SimpleStringProperty summary = new SimpleStringProperty("");
private final SimpleIntegerProperty stock = new SimpleIntegerProperty();
public Book() {}public Book(Long id, Long typeId, String name, String author, Double price, String cover, String summary,Integer stock) {
setId(id);
setTypeId(typeId);
setName(name);
setAuthor(author);
setPrice(price);
setCover(cover);
setSummary(summary);
setStock(stock);
}public long getId() {
return id.get();
}public SimpleLongProperty idProperty() {
return id;
}public void setId(long id) {
this.id.set(id);
}public long getTypeId() {
return typeId.get();
}public SimpleLongProperty typeIdProperty() {
return typeId;
}public void setTypeId(long typeId) {
this.typeId.set(typeId);
}public String getName() {
return name.get();
}public SimpleStringProperty nameProperty() {
return name;
}public void setName(String name) {
this.name.set(name);
}public String getAuthor() {
return author.get();
}public SimpleStringProperty authorProperty() {
return author;
}public void setAuthor(String author) {
this.author.set(author);
}public double getPrice() {
return price.get();
}public SimpleDoubleProperty priceProperty() {
return price;
}public void setPrice(double price) {
this.price.set(price);
}public String getCover() {
return cover.get();
}public SimpleStringProperty coverProperty() {
return cover;
}public void setCover(String cover) {
this.cover.set(cover);
}public String getSummary() {
return summary.get();
}public SimpleStringProperty summaryProperty() {
return summary;
}public void setSummary(String summary) {
this.summary.set(summary);
}public int getStock() {
return stock.get();
}public SimpleIntegerProperty stockProperty() {
return stock;
}public void setStock(int stock) {
this.stock.set(stock);
}
}4.BookDAO接口
package com.soft1841.book.dao;
import cn.hutool.db.Entity;
import com.soft1841.book.entity.Book;
import java.sql.SQLException;
import java.util.List;
/**
* 图书DAO
*/
public interface BookDAO {/**
* 新增图书，返回自增主键
*
* @param book
* @return
* @throws SQLException
*/
Long insertBook(Book book) throws SQLException;
/**
* 根据id删除图书
*
* @param id
* @return
*/
int deleteBookById(long id) throws SQLException;
/**
* 更新图书信息
*
* @param book
* @return
*/
int updateBook(Book book) throws SQLException;
/**
* 查询所有图书
*
* @return
*/
List selectAllBooks() throws SQLException;
/**
* 根据id查询图书信息
*
* @param id
* @return
*/
Entity getBookById(long id) throws SQLException;
/**
* 根据书名关键词模糊查询图书
* @param keywords
* @return
* @throws SQLException
*/
List selectBooksLike(String keywords) throws SQLException;
/**
* 根据图书类别查询图书
* @param typeId
* @return
* @throws SQLException
*/
List selectBooksByTypeId(long typeId) throws SQLException;
/**
* 根据图书类别统计图书数量
* @param typeId
* @return
* @throws SQLException
*/
int countByType(long typeId) throws SQLException;
}
5.BookDAOImpl实现类
package com.soft1841.book.dao.impl;
import cn.hutool.db.Db;
import cn.hutool.db.Entity;
import cn.hutool.db.sql.Condition;
import com.soft1841.book.dao.BookDAO;
import com.soft1841.book.entity.Book;
import java.sql.SQLException;
import java.util.List;
public class BookDAOImpl implements BookDAO {
@Override
public Long insertBook(Book book) throws SQLException {
return Db.use().insertForGeneratedKey(
Entity.create("t_book")
.set("type_id", book.getTypeId())
.set("name", book.getName())
.set("author", book.getAuthor())
.set("price", book.getPrice())
.set("cover", book.getCover())
.set("summary", book.getSummary())
.set("stock",book.getStock())
);
}@Override
public int deleteBookById(long id) throws SQLException {
return Db.use().del(
Entity.create("t_book").set("id", id)
);
}@Override
public int updateBook(Book book) throws SQLException {
//只修改了图书的价格和库存
return Db.use().update(
Entity.create().set("price", book.getPrice())
.set("stock",book.getStock()),
Entity.create("t_book").set("id", book.getId())
);
}@Override
public List selectAllBooks() throws SQLException {
return Db.use().query("SELECT * FROM t_book ");
}@Override
public Entity getBookById(long id) throws SQLException {
return Db.use().queryOne("SELECT * FROM t_book WHERE id = ? ", id);
}@Override
public List selectBooksLike(String keywords) throws SQLException {
return Db.use().findLike("t_book", "name", keywords, Condition.LikeType.Contains);
}@Override
public List selectBooksByTypeId(long typeId) throws SQLException {
return Db.use().query("SELECT * FROM t_book WHERE type_id = ? ", typeId);
}@Override
public int countByType(long typeId) throws SQLException {
return Db.use().queryNumber("SELECT COUNT(*) FROM t_book WHERE type_id = ? ", typeId).intValue();
}
} 6.DAOFactory工厂类中增加方法，获得BookDAO的实现类对象
public static BookDAO getBookDAOInstance() {
return new BookDAOImpl();
}
7.单元测试
package com.soft1841.book.dao;
import cn.hutool.db.Entity;
import com.soft1841.book.entity.Book;
import com.soft1841.book.utils.DAOFactory;
import org.junit.Test;
import java.sql.SQLException;
import java.util.List;
public class BookDAOTest {
private BookDAO bookDAO = DAOFactory.getBookDAOInstance();
@Test
public void insertBook() throws SQLException {
Book book = new Book();
book.setTypeId(1);
book.setName("测试书籍");
book.setAuthor("匿名");
System.out.println(bookDAO.insertBook(book));
}@Test
public void deleteBookById() throws SQLException {
bookDAO.deleteBookById(40);
}@Test
public void updateBook() throws SQLException {
Book book = new Book();
book.setId(40);
book.setPrice(11.1);
book.setStock(99);
bookDAO.updateBook(book);
}@Test
public void selectAllBooks() throws SQLException {
List bookList = bookDAO.selectAllBooks();
bookList.forEach(entity -> System.out.println(entity.getStr("name")));
}@Test
public void getBookById() throws SQLException {
Entity entity = bookDAO.getBookById(1);
System.out.println(entity);
}@Test
public void selectBooksLike() throws SQLException {
List bookList = bookDAO.selectBooksLike("少");
bookList.forEach(entity -> System.out.println(entity.getStr("name")));
}@Test
public void selectBooksByTypeId() throws SQLException {
List bookList = bookDAO.selectBooksByTypeId(1);
bookList.forEach(entity -> System.out.println(entity.getStr("name")));
}@Test
public void countByType() throws SQLException {
int n = bookDAO.countByType(1);
System.out.println(n);
}
}
8.book.fxml布局文件
9.add_book.fxml布局文件