?作者主頁(yè)：編程指南針

?簡(jiǎn)介：Java領(lǐng)域優(yōu)質(zhì)創(chuàng)作者、CSDN博客專家? Java項(xiàng)目、簡(jiǎn)歷模板、學(xué)習(xí)資料、面試題庫(kù)、技術(shù)互助

文末獲取源碼

項(xiàng)目編號(hào)：BS-SC-001

本項(xiàng)目基于JSP+SERVLET+Durid連接池進(jìn)行開發(fā)實(shí)現(xiàn)，數(shù)據(jù)庫(kù)采用MYSQL數(shù)據(jù)庫(kù)，開發(fā)工具為IDEA或ECLIPSE，前端用采用BootStrap開發(fā)實(shí)現(xiàn)。系統(tǒng)采用三層架構(gòu)設(shè)計(jì)，MVC設(shè)計(jì)模式。系統(tǒng)功能完整，頁(yè)面簡(jiǎn)潔大方，維護(hù)方便，適合做畢業(yè)設(shè)計(jì)使用。

具體系統(tǒng)功能展示如下：

前臺(tái)頁(yè)面功能：

分類顯示

餐品詳情

添加購(gòu)物車

個(gè)人訂單管理

個(gè)人資料修改

系統(tǒng)留言

最近瀏覽功能

后臺(tái)管理功能：

管理員登陸：? admin / admin

用戶管理

分類管理

餐品管理

訂單管理

留言管理

新聞管理

本系統(tǒng)是一款優(yōu)秀的畢業(yè)設(shè)計(jì)系統(tǒng)，完美的實(shí)現(xiàn)了基于餐飲業(yè)務(wù)的網(wǎng)上訂餐流程，功能強(qiáng)大，運(yùn)行穩(wěn)定，結(jié)構(gòu)清晰，便于修改，適合做畢業(yè)設(shè)計(jì)使用。

部分核心代碼：

package cn.jbit.easybuy.web;import java.io.IOException;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import cn.jbit.easybuy.biz.FacilityService;import cn.jbit.easybuy.biz.OrderService;import cn.jbit.easybuy.biz.ProductService;import cn.jbit.easybuy.biz.impl.FacilityServiceImpl;import cn.jbit.easybuy.biz.impl.OrderServiceImpl;import cn.jbit.easybuy.biz.impl.ProductServiceImpl;import cn.jbit.easybuy.entity.News;import cn.jbit.easybuy.entity.Pager;import cn.jbit.easybuy.entity.Product;import cn.jbit.easybuy.entity.ProductCategory;import cn.jbit.easybuy.entity.ShoppingCart;import cn.jbit.easybuy.entity.User;import cn.jbit.easybuy.util.ActionResult;import cn.jbit.easybuy.util.Validator;public class CartServlet extends HttpServlet { protected Map<String, ActionResult> viewMapping = new HashMap<String, ActionResult>(); private ProductService productService; private FacilityService facilityService; private OrderService orderService; public void init() throws ServletException { productService = new ProductServiceImpl(); facilityService = new FacilityServiceImpl(); orderService = new OrderServiceImpl(); } protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("utf-8"); createViewMapping(); String actionIndicator = req.getParameter("action"); String result = ""; if (actionIndicator == null) actionIndicator = "list"; if ("list".endsWith(actionIndicator)) { result = list(req); } else if ("add".endsWith(actionIndicator)) { result = add(req); } else if ("mod".endsWith(actionIndicator)) { result = mod(req); } else if ("remove".endsWith(actionIndicator)) { result = remove(req); } else if ("pay".endsWith(actionIndicator)) { result = pay(req); } toView(req, resp, result); } private String pay(HttpServletRequest request) { ShoppingCart cart = getCartFromSession(request); User user = getUserFromSession(request); if(user==null) return "login"; orderService.payShoppingCart(cart, user); removeCartFromSession(request); return "paySuccess"; } private void removeCartFromSession(HttpServletRequest request) { request.getSession().removeAttribute("cart"); } private User getUserFromSession(HttpServletRequest request) { HttpSession session = request.getSession(); return (User) session.getAttribute("loginUser"); } private String add(HttpServletRequest request) { String id = request.getParameter("entityId"); String quantityStr = request.getParameter("quantity"); long quantity = 1; if (!Validator.isEmpty(quantityStr)) quantity = Long.parseLong(quantityStr); Product product = productService.findById(id); ShoppingCart cart = getCartFromSession(request); cart.addItem(product, quantity); return "addSuccess"; } private String mod(HttpServletRequest request) { String id = request.getParameter("entityId"); String quantityStr = request.getParameter("quantity"); long quantity = 1; if (!Validator.isEmpty(quantityStr)) quantity = Long.parseLong(quantityStr); String indexStr = request.getParameter("index"); ShoppingCart cart = getCartFromSession(request); cart.modifyQuantity(Integer.parseInt(indexStr), quantity); return "modSuccess"; } private String remove(HttpServletRequest request) { String id = request.getParameter("entityId"); String quantityStr = request.getParameter("quantity"); long quantity = 1; if (!Validator.isEmpty(quantityStr)) quantity = Long.parseLong(quantityStr); String indexStr = request.getParameter("index"); ShoppingCart cart = getCartFromSession(request); cart.getItems().remove(Integer.parseInt(indexStr)); return "removeSuccess"; } private ShoppingCart getCartFromSession(HttpServletRequest request) { HttpSession session = request.getSession(); ShoppingCart cart = (ShoppingCart) session.getAttribute("cart"); if (cart == null) { cart = new ShoppingCart(); session.setAttribute("cart", cart); } //取出當(dāng)前用戶的訂單列表 return cart; } private String list(HttpServletRequest request) { getCartFromSession(request); return "listSuccess"; } private void prepareCategories(HttpServletRequest request) { List<ProductCategory> categories = productService .getProductCategories(null); request.setAttribute("categories", categories); } private void prepareNews(HttpServletRequest request) { List<News> allNews = facilityService.getAllNews(new Pager(10, 1)); request.setAttribute("allNews", allNews); } protected void createViewMapping() { this.addMapping("listSuccess", "shopping.jsp"); this.addMapping("paySuccess", "shopping-result.jsp"); this.addMapping("addSuccess", "Cart", true); this.addMapping("removeSuccess", "Cart", true); this.addMapping("modSuccess", "Cart", true); this.addMapping("login", "login.jsp"); } private void toView(HttpServletRequest req, HttpServletResponse resp, String result) throws IOException, ServletException { ActionResult dest = this.viewMapping.get(result); if (dest.isRedirect()) { resp.sendRedirect(dest.getViewName()); } else { req.getRequestDispatcher(dest.getViewName()).forward(req, resp); } } protected void addMapping(String viewName, String url) { this.viewMapping.put(viewName, new ActionResult(url)); } protected void addMapping(String viewName, String url, boolean isDirect) { this.viewMapping.put(viewName, new ActionResult(url, isDirect)); } }

package cn.jbit.easybuy.web;import java.io.IOException;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import cn.jbit.easybuy.biz.ProductService;import cn.jbit.easybuy.biz.impl.ProductServiceImpl;import cn.jbit.easybuy.entity.ProductCategory;import cn.jbit.easybuy.util.ActionResult;import cn.jbit.easybuy.util.Validator;public class CategoryServlet extends HttpServlet { private ProductService productService; public void init() throws ServletException { productService = new ProductServiceImpl(); } protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("utf-8"); String actionIndicator = req.getParameter("action"); ActionResult result = new ActionResult("error"); Validator validator = new Validator(Validator.toSingleParameters(req)); if (actionIndicator == null) actionIndicator = "list"; if ("read".endsWith(actionIndicator)) { result = read(req, validator); } else if ("list".endsWith(actionIndicator)) { result = list(req, validator); } else if ("create".endsWith(actionIndicator)) { result = create(req, validator); } else if ("delete".endsWith(actionIndicator)) { result = delete(req, validator); } else if ("save".endsWith(actionIndicator)) { boolean isEdit = true; String editIndicator = req.getParameter("entityId"); if (Validator.isEmpty(editIndicator)) isEdit = false; result = save(req, validator, isEdit); } if (!validator.hasErrors() && result.isRedirect()) { resp.sendRedirect(result.getViewName()); } else { req.setAttribute("errors", validator.getErrors()); req.getRequestDispatcher(result.getViewName()).forward(req, resp); } } public ActionResult read(HttpServletRequest request, Validator validator) { ProductCategory category = productService.findCategoryById(request .getParameter("entityId")); pupulateRequest(request, category); List<ProductCategory> categories = productService.getRootCategories(); request.setAttribute("categories", categories); return new ActionResult("productClass-modify.jsp"); } public ActionResult save(HttpServletRequest request, Validator validator, boolean isEdit) { String entityId = request.getParameter("entityId"); checkInputErrors(request, validator); saveToDatabase(request, validator, isEdit); return new ActionResult("Category", true); } public ActionResult create(HttpServletRequest request, Validator validator) { List<ProductCategory> categories = productService.getRootCategories(); request.setAttribute("categories", categories); request.setAttribute("parentId", 0); return new ActionResult("productClass-modify.jsp"); } public ActionResult delete(HttpServletRequest request, Validator validator) { productService.deleteCategory(request.getParameter("entityId")); return new ActionResult("Category", true); } public ActionResult list(HttpServletRequest request, Validator validator) { List<ProductCategory> categories = productService .getProductCategories(null); request.setAttribute("categories", categories); return new ActionResult("productClass.jsp"); } private void saveToDatabase(HttpServletRequest request, Validator validator, boolean isEdit) { if (!validator.hasErrors()) { ProductCategory productCategory; if (!isEdit) { productCategory = new ProductCategory(); populateEntity(request, productCategory); productCategory.setParentId(Long.parseLong(request .getParameter("parentId"))); productService.saveCategory(productCategory); } else { productCategory = productService.findCategoryById(request .getParameter("entityId")); Long parentId = Long .parseLong(request.getParameter("parentId")); populateEntity(request, productCategory); if (parentId == 0) { if (productCategory.getId().equals( productCategory.getParentId())) { // 說(shuō)明是一級(jí)分類，父分類不能修改，只能改名字 productService.updateCategoryName(productCategory); } else { // 二級(jí)分類修改為一級(jí)分類了,需要額外更新： // Product原先屬于該二級(jí)分類的，全部更新一級(jí)為它，二級(jí)為空 productCategory.setParentId(productCategory.getId()); productService.updateCategory(productCategory, "Level2To1"); } } else { if (!parentId.equals(productCategory.getParentId())) { // 二級(jí)分類修改了父分類,需要額外更新： // Product原先屬于該二級(jí)分類的，全部更新一級(jí)為新的父分類 productCategory.setParentId(parentId); productService.updateCategory(productCategory, "ModifyParent"); } else { // 二級(jí)分類修改了名字 productService.updateCategoryName(productCategory); } } } } } private void pupulateRequest(HttpServletRequest request, ProductCategory productCategory) { request .setAttribute("entityId", Long .toString(productCategory.getId())); request.setAttribute("name", productCategory.getName()); request.setAttribute("parentId", (productCategory.getParentId() .equals(productCategory.getId())) ? 0 : productCategory .getParentId()); } private void checkInputErrors(HttpServletRequest request, Validator validator) { validator.checkRequiredError(new String[] { "name" }); } private void populateEntity(HttpServletRequest request, ProductCategory productCategory) { productCategory.setName(request.getParameter("name")); } }

package cn.jbit.easybuy.web;import java.io.IOException;import java.util.Date;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import cn.jbit.easybuy.biz.FacilityService;import cn.jbit.easybuy.biz.ProductService;import cn.jbit.easybuy.biz.impl.FacilityServiceImpl;import cn.jbit.easybuy.biz.impl.ProductServiceImpl;import cn.jbit.easybuy.entity.Comment;import cn.jbit.easybuy.entity.Pager;import cn.jbit.easybuy.entity.ProductCategory;import cn.jbit.easybuy.util.ActionResult;import cn.jbit.easybuy.util.Validator;public class CommentServlet extends HttpServlet { private FacilityService facilityService; private ProductService productService; public void init() throws ServletException { this.facilityService = new FacilityServiceImpl(); this.productService = new ProductServiceImpl(); } protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("utf-8"); String actionIndicator = req.getParameter("action"); ActionResult result = new ActionResult("error"); Validator validator = new Validator(Validator.toSingleParameters(req)); if (actionIndicator == null) actionIndicator = "list"; if ("read".endsWith(actionIndicator)) { result = read(req, validator); } else if ("list".endsWith(actionIndicator)) { result = list(req, validator); } else if ("delete".endsWith(actionIndicator)) { result = delete(req, validator); } else if ("save".endsWith(actionIndicator)) { boolean isEdit = true; String editIndicator = req.getParameter("entityId"); if (Validator.isEmpty(editIndicator)) isEdit = false; result = save(req, validator, isEdit); } if (!validator.hasErrors() && result.isRedirect()) { resp.sendRedirect(result.getViewName()); } else { req.setAttribute("errors", validator.getErrors()); req.getRequestDispatcher(result.getViewName()).forward(req, resp); } } public ActionResult read(HttpServletRequest request, Validator validator) { Comment comment = facilityService.findCommentById(request .getParameter("entityId")); pupulateRequest(request, comment); return new ActionResult("guestbook-modify.jsp"); } public ActionResult save(HttpServletRequest request, Validator validator, boolean isEdit) { checkInputErrors(request, validator); saveToDatabase(request, validator, isEdit); return new ActionResult("GuestBook", true); } public ActionResult delete(HttpServletRequest request, Validator validator) { facilityService.deleteComment(request.getParameter("entityId")); return new ActionResult("GuestBook", true); } public ActionResult list(HttpServletRequest request, Validator validator) { String page = request.getParameter("page"); int pageNo = 1; if (!Validator.isEmpty(page)) pageNo = Integer.parseInt(page); long rowCount = facilityService.getCommentRowCount(); Pager pager = new Pager(rowCount, pageNo); List<Comment> comments = facilityService.getComments(pager); List<ProductCategory> categories = productService .getProductCategories(null); request.setAttribute("categories", categories); request.setAttribute("comments", comments); request.setAttribute("pager", pager); request.setAttribute("pageNo", pageNo); return new ActionResult("guestbook.jsp"); } private void pupulateRequest(HttpServletRequest request, Comment comment) { request.setAttribute("entityId", Long.toString(comment.getId())); request.setAttribute("reply", comment.getReply()); request.setAttribute("content", comment.getContent()); request.setAttribute("nickName", comment.getNickName()); request.setAttribute("replayTime", Validator.dateToString(comment .getReplyTime())); } private void saveToDatabase(HttpServletRequest request, Validator validator, boolean isEdit) { if (!validator.hasErrors()) { Comment comment; if (!isEdit) { comment = new Comment(); comment.setCreateTime(new Date()); populateEntity(request, comment); facilityService.saveComment(comment); } else { comment = facilityService.findCommentById(request .getParameter("entityId")); if (!Validator.isEmpty(request.getParameter("reply"))) { comment.setReply(request.getParameter("reply")); comment.setReplyTime(new Date()); } facilityService.updateComment(comment); } } } private void checkInputErrors(HttpServletRequest request, Validator validator) { validator.checkRequiredError(new String[] { "content", "nickName" }); } private void populateEntity(HttpServletRequest request, Comment comment) { comment.setContent(request.getParameter("content")); comment.setNickName(request.getParameter("nickName")); } }