src/cn/itcast/goods/admin/book/web/servlet/AdminBookServlet.java

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package cn.itcast.goods.admin.book.web.servlet;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.itcast.commons.CommonUtils;
import cn.itcast.goods.book.domain.Book;
import cn.itcast.goods.book.service.BookService;
import cn.itcast.goods.category.domain.Category;
import cn.itcast.goods.category.service.CategoryService;
import cn.itcast.goods.pager.PageBean;
import cn.itcast.servlet.BaseServlet;

public class AdminBookServlet extends BaseServlet {
	private BookService bookService = new BookService();
	private CategoryService  categoryService = new CategoryService();
	
	/**
	 * 删除图书
	 * @param req
	 * @param resp
	 * @return
	 * @throws ServletException
	 * @throws IOException
	 */
	public String delete(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		String bid = req.getParameter("bid");
		
		/*
		 * 删除图片
		 */
		Book book = bookService.load(bid);
		String savepath = this.getServletContext().getRealPath("/");//获取真实的路径
		new File(savepath, book.getImage_w()).delete();//删除文件
		new File(savepath, book.getImage_b()).delete();//删除文件
		
		bookService.delete(bid);//删除数据库的记录
		
		req.setAttribute("msg", "删除图书成功！");
		return "f:/adminjsps/msg.jsp";
	}
	
	/**
	 * 修改图书
	 * @param req
	 * @param resp
	 * @return
	 * @throws ServletException
	 * @throws IOException
	 */
	public String edit(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		/*