备案控制台
开发者社区 开发与运维 文章 正文

Java项目：基于Jsp实现网上定餐系统

2022-12-12 79
版权
版权声明：
本文内容由阿里云实名注册用户自发贡献，版权归原作者所有，阿里云开发者社区不拥有其著作权，亦不承担相应法律责任。具体规则请查看《 阿里云开发者社区用户服务协议》和 《阿里云开发者社区知识产权保护指引》。如果您发现本社区中有涉嫌抄袭的内容，填写 侵权投诉表单进行举报，一经查实，本社区将立刻删除涉嫌侵权内容。
简介： Java项目：基于Jsp实现网上定餐系统

项目编号：BS-SC-001


本项目基于JSP+SERVLET+Durid连接池进行开发实现，数据库采用MYSQL数据库，开发工具为IDEA或ECLIPSE，前端用采用BootStrap开发实现。系统采用三层架构设计，MVC设计模式。系统功能完整，页面简洁大方，维护方便，适合做毕业设计使用。

具体系统功能展示如下：

前台页面功能：

20210125194732337.png

分类显示

image.png

餐品详情

image.png

添加购物车

image.png

个人订单管理

image.png

个人资料修改

image.png

系统留言

image.png

最近浏览功能

image.png

后台管理功能：

管理员登陆：  admin / admin

image.png

用户管理

image.png

分类管理

image.png

餐品管理

image.png

订单管理

image.png

留言管理

image.png

新闻管理

image.png

本系统是一款优秀的毕业设计系统，完美的实现了基于餐饮业务的网上订餐流程，功能强大，运行稳定，结构清晰，便于修改，适合做毕业设计使用。

部分核心代码：

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);
    }
    //取出当前用户的订单列表
    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())) {
            // 说明是一级分类，父分类不能修改，只能改名字
            productService.updateCategoryName(productCategory);
          } else {
            // 二级分类修改为一级分类了,需要额外更新：
            // Product原先属于该二级分类的，全部更新一级为它，二级为空
            productCategory.setParentId(productCategory.getId());
            productService.updateCategory(productCategory,
                "Level2To1");
          }
        } else {
          if (!parentId.equals(productCategory.getParentId())) {
            // 二级分类修改了父分类,需要额外更新：
            // Product原先属于该二级分类的，全部更新一级为新的父分类
            productCategory.setParentId(parentId);
            productService.updateCategory(productCategory,
                "ModifyParent");
          } else {
            // 二级分类修改了名字
            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"));
  }
}
文章标签：
Java
前端开发
Android开发
开发工具
关系型数据库
MySQL
数据库
设计模式
关键词：
Java系统
Java项目
jsp系统
jsp java
Java jsp
编程千纸鹤
目录
相关文章
骚戴
|
2天前
|
Java
学院管理系统【JSP+Servlet+JavaBean】（Java课设）
学院管理系统【JSP+Servlet+JavaBean】（Java课设）
骚戴
13 3
学院管理系统【JSP+Servlet+JavaBean】（Java课设）
骚戴
|
2天前
|
Java
排课系统【JSP+Servlet+JavaBean】（Java课设）
排课系统【JSP+Servlet+JavaBean】（Java课设）
骚戴
13 5
骚戴
|
2天前
|
Java
仓库管理系统【JSP+Servlet+JavaBean】（Java课设）
仓库管理系统【JSP+Servlet+JavaBean】（Java课设）
骚戴
9 1
骚戴
|
2天前
|
Java
学校教师管理系统【JSP+Servlet+JavaBean】（Java课设）
学校教师管理系统【JSP+Servlet+JavaBean】（Java课设）
骚戴
11 2
源码宝
|
2天前
|
数据采集 前端开发 Java
Java医院绩效考核系统源码maven+Visual Studio Code一体化人力资源saas平台系统源码
医院绩效解决方案包括医院绩效管理（BSC）、综合奖金核算（RBRVS），涵盖从绩效方案的咨询与定制、数据采集、绩效考核及反馈、绩效奖金核算到科到组、分配到员工个人全流程绩效管理；将医院、科室、医护人员利益绑定；全面激活人才活力；兼顾质量和效益、长期与短期利益；助力医院降本增效，持续改善、优化收入、成本结构。
源码宝
9 0
宁波阿成.
|
2天前
|
移动开发 前端开发 Java
STS里的java 工程项目名称修改和目录设置成源代码
STS里的java 工程项目名称修改和目录设置成源代码
宁波阿成.
3 0
骚戴
|
2天前
|
Java
校园帮【JSP+Servlet+JavaBean】（Java课设）
校园帮【JSP+Servlet+JavaBean】（Java课设）
骚戴
6 1
骚戴
|
2天前
|
Java
新闻发布系统【JSP+Servlet+JavaBean】（Java课设）
新闻发布系统【JSP+Servlet+JavaBean】（Java课设）
骚戴
9 2
1529723250799936
|
2天前
|
JavaScript 前端开发 Java
java项目的打包将vue放到.jar里面部署
java项目的打包将vue放到.jar里面部署
1529723250799936
8 3
骚戴
|
2天前
|
Java
学校人员管理系统【JSP+Servlet+JavaBean】（Java课设）
学校人员管理系统【JSP+Servlet+JavaBean】（Java课设）
骚戴
7 2

热门文章

最新文章

  • 1
    【Spring原理进阶】SpringMVC调用链＋JSP模板应用讲解
  • 2
    JSP学习之------&gt;JSP分页技术实现 [转贴]
  • 3
    jsp mysql 连接
  • 4
    javaScript JSP HTML Java CSS 注释
  • 5
    JSP自定义简单标签入门之带有属性
  • 6
    JSP开发中的JavaBean的应用以及部署
  • 7
    jsp标签小结
  • 8
    jsp静态包含和动态包含的区别
  • 9
    HTTP Status 500 - Unable to compile class for JSP:Syntax error on token &quot;=&quot;, @ expected
  • 10
    更改Myeclipse默认的Jsp PageEncoding
  • 1
    Java 文件处理完全指南：创建、读取、写入和删除文件详细解析
    285
  • 2
    Java的语法基础
    19
  • 3
    Java的面向对象设计
    17
  • 4
    java的类加载过程
    15
  • 5
    java的常见算法
    18
  • 6
    Java的IO技术和NIO技术
    25
  • 7
    JAVA字符串与其他类型数据的转换
    37
  • 8
    JAVA字符串的基本操作
    22
  • 9
    JAVA一维数组
    28
  • 10
    JAVA跳转控制语句
    24

    • 相关课程

    更多
  • Java面试疑难点解析 - 面试技巧及语言基础
  • Java面试疑难点解析 - Java Web开发
  • Java面试疑难点解析 - 系统架构及项目设计
  • Java编程入门
  • Java面向对象编程
  • Java高级编程

    • 相关电子书

    更多
  • Spring Cloud Alibaba - 重新定义 Java Cloud-Native
  • The Reactive Cloud Native Arch
  • JAVA开发手册1.5.0

    • 相关实验场景

    更多
  • 基于ECS搭建Java Web开发环境
  • 使用Aliyun Java Intializr进行项目开发
  • 搭建Java Web开发环境
  • 部署基于Dragonwell的Java运行环境
  • 阿里云平台上进行Java程序的编译与运行
    • 下一篇
    部署LAMP环境（Alibaba Cloud Linux 3）