Day13

Dao包BookDao类

public interface BookDao {

    void insertBook(Book book);

    int findAllBookNumber();

    
    List<Book> findAllBookRecords(int startIndex,int pageSize);

    void remove(String bookId);

    Book getBookById(String bookId);

    void updateBook(Book book);

    int findPageBookNumber(String categoryId);

    List<Book> findPageBooks(int startIndex, int pageSize, String categoryId);
     
    
    
}

View Code

BookDaoImpl类

public class BookDaoImpl implements BookDao {
    QueryRunner qr = new QueryRunner(DbcpUtils.getDataSource());
        public void insertBook(Book book) {
        try {
            qr.update("insert into book(id,name,description,author,publish,price,path,photoname,categoryId) values (?,?,?,?,?,?,?,?,?)",
                    book.getId(),
                    book.getName(),
                    book.getDescription(),
                    book.getAuthor(),
                    book.getPublish(),
                    book.getPrice(),
                    book.getPath(),
                    book.getPhotoName(),
                    book.getCategoryId()
                    );
        } catch (SQLException e) {
            throw new AddBookException(e);
/*            throw new RuntimeException(e);
*/        }
    }
    
    public int findAllBookNumber() {
        try {
            Object obj = qr.query("select count(*) from book", new ScalarHandler(1));
            Long num = (Long) obj;
            return num.intValue();
        } catch (SQLException e) {
            throw new QueryBookException(e);
/*            throw new RuntimeException(e);
*/        }
    }
    
    public List<Book> findAllBookRecords(int startIndex, int pageSize) {
        try {
            List<Book> book  = qr.query("select * from book  limit ?,?", new BeanListHandler<Book>(Book.class),startIndex,pageSize);
            System.out.println("book:"+book);
            return book;
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        
    }
    
    public void remove(String bookId) {
        try {
            qr.update("delete from book where id = ?",bookId);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    
    public Book getBookById(String bookId) {
        try {
            Book book = qr.query("select * from book where id = ?", new BeanHandler<Book>(Book.class),bookId);
            return book;
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        
    }
    public void updateBook(Book book) {
        try {
            qr.update("update book set name=?,description=?,author=?,publish=?,price=?,path=?,photoname=?,categoryId=? where id =?",
                    
                    book.getName(),
                    book.getDescription(),
                    book.getAuthor(),
                    book.getPublish(),
                    book.getPrice(),
                    book.getPath(),
                    book.getPhotoName(),
                    book.getCategoryId(),
                    book.getId()
                    );
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        
    }
    
    @Override
    public int findPageBookNumber(String categoryId) {
        try {
         Object obj = qr.query("select count(*)  from book where categoryId = ?",new ScalarHandler(1),categoryId);
         Long num =  (Long) obj;
         return num.intValue();
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public List<Book> findPageBooks(int startIndex, int pageSize,
            String categoryId) {
        try {
            return qr.query("select *  from book where categoryId = ? limit ?,?",new BeanListHandler<Book>(Book.class),categoryId,startIndex,pageSize);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

}

View Code

CategoryDao类

public interface CategoryDao {
    void save(Category category);

    List<Category> getAllCategory();

    Category getCategoryById(String id);

    void removeCategory(String c);
    
    void updateCategory(Category category);
}

View Code

CategoryDaoImpl类

public class CategoryDaoImpl implements CategoryDao {
    QueryRunner qr  = new QueryRunner(DbcpUtils.getDataSource());

    public void save(Category category) {
        try {
            qr.update("insert into category(id,name,description) values (?,?,?) ", 
                    category.getId(),
                    category.getName(),
                    category.getDescription());
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
    
    public List<Category> getAllCategory() {
        try {
            return qr.query("select * from category", new BeanListHandler<Category>(Category.class));
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    public Category getCategoryById(String id) {
    
        try {
             Category c = qr.query("select * from category where id = ?",new BeanHandler<Category>(Category.class),id);
             return c;
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    public void removeCategory(String categoryId) {
        try {
            System.out.println("dao实现的id: " +categoryId);
            
            qr.update("delete from category where id = ? ",categoryId);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        
    }

    public void updateCategory(Category category) {
        try {
            qr.update("update category set name = ?,description= ? where id = ? ", 
                    category.getName(),
                    category.getDescription(),
                    category.getId());
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        
    }
}

View Code

UserDao类

public interface UserDao {

    void save(User user);

    User login(String username, String password, String type);

}

View Code

UserDaoImpl类

public class UserDaoImpl implements UserDao {

    QueryRunner qr = new QueryRunner(DbcpUtils.getDataSource());
    
    public void save(User user) {
        
        try {
            qr.update("insert into user(id,username,password,type,sex) values (?,?,?,?,?)",
                    user.getId(),
                    user.getUsername(),
                    user.getPassword(),
                    user.getType(),
                    user.getSex()
                    );
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    public User login(String username, String password,String type) {
        try {
        System.out.println("..."+username+password+type);
            User user =  qr.query("select * from user where username = ? and password = ? and type = ?", 
                    new BeanHandler<User>(User.class),username,password,type);
            System.out.println("dao'user"+user);
            return user;
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

}

View Code

DbcpUtils类

public class DbcpUtils {

        public static DataSource dataSource;

        static{
            try {
                String myFile = "dbcp.properties";
                InputStream in = DbcpUtils.class.getClassLoader().getResourceAsStream(myFile);
                Properties p = new Properties();
                p.load(in);
                dataSource = BasicDataSourceFactory.createDataSource(p);
            }  catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        
        public static DataSource getDataSource(){
            return dataSource;
        }
       
        public static Connection getConnection() throws SQLException {
            return dataSource.getConnection();
        }
}

View Code

 

标签：qr,String,throw,book,Day13,new,public
来源： https://www.cnblogs.com/headl-voi/p/15815421.html