Day14

BusinessService类

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public interface BusinessService {
    void addBook(Book book);
    
    Page findAllBook(String pagenum);
    
        void userRegister(User user);
    
        User userLogin(String username ,String password,String type);
    
    void addCategory(Category category);
    
    Category findCategoryById(String id);    
    
    List<Category> findAllCategory();
    
    void delCategory(String categoryId);

    void editCategory(Category category);

    void delBook(String bookId);

    Book findBookById(String bookId);

    void editBook(Book book);

    Page findAllBookPageRecords(String pagenum, String categoryId);
}
View Code
复制代码

BusinessServiceImpl类

复制代码
public class BusinessServiceImpl implements BusinessService {
    
    
    BookDao bookDao = new BookDaoImpl();
    UserDao userDao = new UserDaoImpl();
    CategoryDao categoryDao = new CategoryDaoImpl();
    
    public void addBook(Book book) {
        book.setId(UUID.randomUUID().toString());
        bookDao.insertBook(book);
    }

    
    
    public void delBook(String bookId) {
        bookDao.remove(bookId);
    }
    
    public Book findBookById(String bookId) {
        Book book = bookDao.getBookById(bookId);
        return book;
    }
    
    public void editBook(Book book) {
        bookDao.updateBook(book);
        
    }

    public Page findAllBook(String pagenum) {
        
        int currentPagenum = 1;
        if(pagenum != null){
            currentPagenum = Integer.parseInt(pagenum);
        }
        
        int totalRecords = bookDao.findAllBookNumber();
                         
        Page page = new Page(currentPagenum, totalRecords);
        
        List<Book> records = bookDao.findAllBookRecords(page.getStartIndex(), page.getPageSize());
        
        page.setRecords(records);
        
        System.out.println("page = " +page);
        
        return page;
    }
    
    @Override
    public Page findAllBookPageRecords(String pagenum, String categoryId) {
        int currentPagenum = 1;
        if(pagenum != null){
            currentPagenum = Integer.parseInt(pagenum);
        }
        
        int totalRecords = bookDao.findPageBookNumber(categoryId);
                         
        Page page = new Page(currentPagenum, totalRecords);
        
        List<Book> records = bookDao.findPageBooks(page.getStartIndex(), page.getPageSize(),categoryId);
        
        page.setRecords(records);
        
        System.out.println("page = " +page);
        
        return page;
    }

    public void addCategory(Category category) {
        category.setId(UUID.randomUUID().toString());
        categoryDao.save(category);
    }


    public Category findCategoryById(String id) {
        return categoryDao.getCategoryById(id);
    }

    
    public List<Category> findAllCategory() {
        return categoryDao.getAllCategory();
    }

    
    public void delCategory(String categoryId) {
        categoryDao.removeCategory(categoryId);
        
    }

    public void editCategory(Category category) {
        categoryDao.updateCategory(category);
        
    }
        
    public void userRegister(User user) {
        user.setId(UUID.randomUUID().toString());
        System.out.println("service中的user是"+user);
        userDao.save(user);
    }

    public User userLogin(String username, String password,String type) {
        return userDao.login(username,password,type);
}
View Code
复制代码

servlet包ControlServlet类

?
public class ControlServlet extends HttpServlet {
 
    BusinessService s = new BusinessServiceImpl();
 
    Book book = new Book();
 
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
 
         
        response.setCharacterEncoding("utf-8");
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");
 
        String op = request.getParameter("op");
 
        if ("addCategory".equals(op)) {
            addCategory(request, response);
            // 如果传过来的参数是“findAllCategory” 与 op的值相同
        } else if ("showBookDetails".equals(op)) {
            showBookDetails(request, response);
        } else if ("showIndex".equals(op)) {
            showIndex(request, response);
        } else if ("showCategoryBooks".equals(op)) {
            showCategoryBooks(request, response);
        } else if ("buyBook".equals(op)) {
            buyBook(request, response);
        } else if ("changeNum".equals(op)) {
            changeNum(request, response);
        } else if("delOneItem".equals(op)){
            delOneItem(request,response);
        }else if ("findAllCategory".equals(op)) {
            findAllCategory(request, response);
        } else if ("userRegister".equals(op)) {
            userRegister(request, response);
        } else if ("userLogin".equals(op)) {
            userLogin(request, response);
        } else if ("logout".equals(op)) {
            logout(request, response);
        } else if ("addBookView".equals(op)) {
            addBookView(request, response);
        } else if ("addBook".equals(op)) {
            addBook(request, response);
        } else if ("showBook".equals(op)) {
            showBook(request, response);
        } else if ("delCategory".equals(op)) {
            delCategory(request, response);
        } else if ("editCategoryView".equals(op)) {
            editCategoryView(request, response);
        } else if ("editCategory".equals(op)) {
            editCategory(request, response);
        } else if ("delBook".equals(op)) {
            delBook(request, response);
        } else if ("editBookView".equals(op)) {
            editBookView(request, response);
        } else if ("editBook".equals(op)) {
            editBook(request, response);
        }
    }
 
     
    //  删除购物项目
    private void delOneItem(HttpServletRequest request,
            HttpServletResponse response) throws IOException {
         
        String bookId = request.getParameter("bookId");
         
        Cart cart = (Cart) request.getSession().getAttribute("cart");
     
        cart.getItems().remove(bookId);
         
        // 重定向
        response.sendRedirect(request.getContextPath()+"/showCart.jsp");
         
    }
 
     
     // 修改购物项的数量
    private void changeNum(HttpServletRequest request,
            HttpServletResponse response) throws IOException {
        String bookId = request.getParameter("bookId");
        String newNum = request.getParameter("num");
         
        Cart cart = (Cart) request.getSession().getAttribute("cart");
        CartItem item = cart.getItems().get(bookId);
        item.setQuantity(Integer.parseInt(newNum));
         
        // 重定向
        response.sendRedirect(request.getContextPath()+"/showCart.jsp");
         
         
         
    }
 
    //购买书籍
    private void buyBook(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
 
        String bookId = request.getParameter("bookId");
 
        Book b = s.findBookById(bookId);
 
        HttpSession session = request.getSession();
 
        Cart cart = (Cart) session.getAttribute("cart");
 
        if (cart == null) {
            cart = new Cart();
            session.setAttribute("cart", cart);
        }
        cart.addBook(b);
        System.out.println("cart" + cart.getItems());
        request.setAttribute("msg",
                "书籍购买成功，<a href='" + request.getContextPath() + "'>请继续购物！</a>");
        request.getRequestDispatcher("/message.jsp").forward(request, response);
 
    }
 
    //展示图书的详细信息
     private void showBookDetails(HttpServletRequest request,
    HttpServletResponse response) throws ServletException, IOException {
    String bookId = request.getParameter("bookId");
    Book b = s.findBookById(bookId);
    request.setAttribute("b", b);
 
    request.getRequestDispatcher("/showBookDetails.jsp").forward(request,
                response);
 
    }
 
        private void showCategoryBooks(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
 
        String pagenum = request.getParameter("pagenum");
        String categoryId = request.getParameter("categoryId");
 
        List<Category> cs = s.findAllCategory();
 
        Page page = s.findAllBookPageRecords(pagenum, categoryId);
 
        page.setUrl("servlet/ControlServlet?op=showCategoryBooks&categoryId="
                + categoryId);
 
        request.setAttribute("page", page);
        request.setAttribute("cs", cs);
 
        request.getRequestDispatcher("/showAllBooks.jsp").forward(request,
                response);
    }
 
    //展示一个首页
    private void showIndex(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
 
        String pagenum = request.getParameter("pagenum");
 
        Page page = s.findAllBook(pagenum);
 
        page.setUrl("servlet/ControlServlet?op=showIndex");
 
        List<Category> cs = s.findAllCategory();
 
        request.setAttribute("page", page);
        request.setAttribute("cs", cs);
 
        request.getRequestDispatcher("/showAllBooks.jsp").forward(request,
                response);
 
    }
 
     
     // 用户注销：退出登录、跳转到index.jsp
    private void logout(HttpServletRequest request, HttpServletResponse response)
            throws IOException {
        request.getSession().invalidate();
        response.sendRedirect(request.getContextPath());
    }
 
 
    //编辑图书：更新内容
    private void editBook(HttpServletRequest request,
            HttpServletResponse response) {
 
        String bookId = request.getParameter("bookId");
 
        try {
            // 不是一个普通的表单
            boolean isMultipart = ServletFileUpload.isMultipartContent(request);
            if (!isMultipart) {
                // 普通的表单
                request.setAttribute("msg", "亲，您的表单填写有误，请检查！");
                request.getRequestDispatcher("/message.jsp").forward(request,
                        response);
                // 表示判断语句结束
                return;
            }
            DiskFileItemFactory factory = new DiskFileItemFactory();
            ServletFileUpload upload = new ServletFileUpload(factory);
 
            List<FileItem> items = upload.parseRequest(request);
            for (FileItem item : items) {
                if (item.isFormField()) {
 
                    String fieldName = item.getFieldName();
                    String fieldValue = item.getString(request
                            .getCharacterEncoding());
                    BeanUtils.setProperty(book, fieldName, fieldValue);
                    book.setId(bookId);
                } else {
                    if (fieldName != null && !fieldName.trim().equals("")) {
                        String storeDirectory = getServletContext()
                                .getRealPath("/images/");
                        // 路径
                        String path = SetPhotoPath.makeDir(storeDirectory,
                                fieldName);
                                                book.setPath(path);
                        book.setPhotoName(fieldName);
 
                        // 上传
                        item.write(new File(storeDirectory + path + "/"
                                + fieldName));
 
                    }
                }
            }
 
            System.out.println("book:" + book);
 
            s.editBook(book);
            request.setAttribute("msg", "修改图书成功！");
            request.getRequestDispatcher("/message.jsp").forward(request,
                    response);
 
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
 
    }
 
    private void editBookView(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
 
        String bookId = request.getParameter("bookId");
 
        Book b = s.findBookById(bookId);
 
        List<Category> cs = s.findAllCategory();
 
        request.setAttribute("cs", cs);
 
        request.setAttribute("b", b);
 
        request.getRequestDispatcher("/editBook.jsp")
                .forward(request, response);
 
    }

　　

posted @   灰幕  阅读(28)  评论(0)  编辑  收藏  举报
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