网上图书商城项目学习笔记-032编辑图书第二步

一、流程分析

二、代码

1.view层

(1).jsp

(2).js

 

2.servlet层

(1)AdminBookServlet.java 

    /**
     * 编辑图书
     * @param req
     * @param resp
     * @return
     * @throws ServletException
     * @throws IOException
     */
    public String edit(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        Map<String,String[]> map = req.getParameterMap();
        Book book = CommonUtils.toBean(map, Book.class);
        Category category = new Category();
        category.setCid(req.getParameter("cid"));
        book.setCategory(category);
        bookService.eidt(book);
        req.setAttribute("msg", "修改图书成功！");
        return "f:/adminjsps/msg.jsp";
    }

3.service层

(1).java

 

4.dao层

(1)BookDao.java

/**
     * 修改图书
     * @param book
     *         String sql = "insert into t_book(bid,bname,author,price,currPrice," +
                "discount,press,publishtime,edition,pageNum,wordNum,printtime," +
                "booksize,paper,cid,image_w,image_b)" +
     * @throws SQLException 
     */
    public void edit(Book book) throws SQLException {
        String sql = "update t_book set bname=?,author=?,price=?,currPrice=?," +
                "discount=?,press=?,publishtime=?,edition=?,pageNum=?,wordNum=?," +
                "printtime=?,booksize=?,paper=?,cid=? where bid=?";
        Object[] params = {book.getBname(),book.getAuthor(),
                book.getPrice(),book.getCurrPrice(),book.getDiscount(),
                book.getPress(),book.getPublishtime(),book.getEdition(),
                book.getPageNum(),book.getWordNum(),book.getPrinttime(),
                book.getBooksize(),book.getPaper(), 
                book.getCategory().getCid(),book.getBid()};
        qr.update(sql, params);
    }