javaWEB酒店管理系统源代码（完整版）

package com.cdtu.servlet; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.UUID; import javax.servlet.RequestDispatcher; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.beanutils.BeanUtils; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import com.cdtu.entity.Food; import com.cdtu.entity.FoodType; import com.cdtu.factory.BeanFactory; import com.cdtu.service.IFoodService; import com.cdtu.service.IFoodTypeService; import com.cdtu.utils.PageBean; public class FoodServlet extends BaseServlet { @Override public void init(ServletConfig config) throws ServletException { super.init(config); PageBean<Food> pageBean = new PageBean<Food>(); pageBean.setPageCount(6); foodService.getAll(pageBean); List<Food> list = foodService.query(); config.getServletContext().setAttribute("food", list); config.getServletContext().setAttribute("pb", pageBean); } // public void getMenu(HttpServletRequest request, // HttpServletResponse response) throws ServletException, IOException { // // } public Object list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Object uri = null; try { // 1. 获取“当前页”参数； (第一次访问当前页为null) String currPage = request.getParameter("currentPage"); // 判断 if (currPage == null || "".equals(currPage.trim())) { currPage = "1"; // 第一次访问，设置当前页为1; } // 转换 int currentPage = Integer.parseInt(currPage); // 2. 创建PageBean对象，设置当前页参数； 传入service方法参数 PageBean<Food> pageBean = new PageBean<Food>(); pageBean.setCurrentPage(currentPage); pageBean.setPageCount(6); // 3. 调用service foodService.getAll(pageBean); // 【pageBean已经被dao填充了数据】 // 4. 保存pageBean对象，到request域中 List<Food> list = pageBean.getPageData(); // 获得食物类别的方法 List<FoodType> types = new ArrayList<FoodType>(); if (list != null) { for (Food food : list) { FoodType foodtype = foodTypeService.findById(food.getFoodType_id()); types.add(foodtype); } } request.setAttribute("types", types); request.setAttribute("pageBean", pageBean); request.setAttribute("list", list); uri = request.getRequestDispatcher("/sys/food/foodList.jsp"); } catch (Exception e) { e.printStackTrace(); // 测试使用 // 出现错误，跳转到错误页面；给用户友好提示 uri = "/error/error.jsp"; } return uri; } public Object findFoodType(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Object uri = null; List<FoodType> foodtypes = foodTypeService.query(); request.setAttribute("foodtypes", foodtypes); uri = request.getRequestDispatcher("/sys/food/saveFood.jsp"); return uri; } public Object add(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Object uri = null; try { FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); upload.setFileSizeMax(10 * 1024 * 1024); // 单个文件大小限制 upload.setSizeMax(50 * 1024 * 1024); // 总文件大小限制 upload.setHeaderEncoding("UTF-8"); // 对中文文件编码处理 if (upload.isMultipartContent(request)) { Food food = new Food(); List<FileItem> list = upload.parseRequest(request); for (FileItem item : list) { if (item.isFormField()) {// 普通本文内容 String name = item.getFieldName(); // 获取值 String value = item.getString(); value = new String(value.getBytes("ISO-8859-1"), "UTF-8"); BeanUtils.setProperty(food, name, value); } else {// 上传内容 String fieldName = item.getFieldName(); String path = getServletContext() .getRealPath("/upload"); File f = new File(path); if (!f.exists()) { f.mkdir(); } // 全部绝对路径 String name = item.getName(); BeanUtils.setProperty(food, fieldName, "upload/" + name); // a2. 拼接文件名 File file = new File(path, name); // d. 上传 if(!file.isDirectory()){ item.write(file); } item.delete(); // 删除组件运行时产生的临时文件 } } foodService.add(food); } else { } list(request, response); } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; return uri; } // uri = request.getRequestDispatcher("/sys/food/foodList.jsp"); return uri; } public Object query(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Object uri = null; try { List<Food> list = foodService.query(); request.setAttribute("list", list); // 获得食物类别的方法 List<FoodType> types = new ArrayList<FoodType>(); IFoodTypeService ifs = BeanFactory.getInstance("foodTypeService", IFoodTypeService.class); for (Food food : list) { FoodType foodtype = ifs.findById(food.getFoodType_id()); types.add(foodtype); } request.setAttribute("types", types); uri = request.getRequestDispatcher("/sys/food/foodList.jsp"); } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; } finally { return uri; } } public Object update(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Object uri = null; try { FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); upload.setFileSizeMax(10 * 1024 * 1024); // 单个文件大小限制 upload.setSizeMax(50 * 1024 * 1024); // 总文件大小限制 upload.setHeaderEncoding("UTF-8"); // 对中文文件编码处理 if (upload.isMultipartContent(request)) { Food food = new Food(); List<FileItem> list = upload.parseRequest(request); for (FileItem item : list) { if (item.isFormField()) {// 普通本文内容 String name = item.getFieldName(); // 获取值 String value = item.getString(); value = new String(value.getBytes("ISO-8859-1"), "UTF-8"); BeanUtils.setProperty(food, name, value); } else {// 上传内容 String fieldName = item.getFieldName(); String path = getServletContext() .getRealPath("/upload");//. File f = new File(path); if (!f.exists()) { f.mkdir(); } String name = item.getName(); if(name!=null && !"".equals(name.trim())){ BeanUtils.setProperty(food, fieldName, ("upload/" + name));//.. // a2. 拼接文件名 File file = new File(path, name); // d. 上传 if (!file.isDirectory()) { item.write(file); } item.delete(); // 删除组件运行时产生的临时文件 }else{ int id = food.getId(); String img =foodService.findById(id).getImg(); BeanUtils.setProperty(food, "img",img); } } } foodService.updata(food); } else { } list(request, response); } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; return uri; } uri = request.getRequestDispatcher("/sys/food/foodList.jsp"); return uri; } public Object delete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Object uri = null; try {