Java如何实现小蜜蜂扩音器网上商城系统

这篇文章主要介绍Java如何实现小蜜蜂扩音器网上商城系统，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

一、项目简述

用户功能模块： 用户注册： 用户登录：商品模块：订单模块；后台管理系统功能：管理员模块： 商品模块：订单管理模块 ；

二、项目运行

1.运行环境

JDK1.8+Tomcat8.5+MYSQL+Eclispe（Eclispe,MyEclispe,Sts，IntelliJ IDEA都支持,小伙伴自行配置即可）

2.技术栈

JSP + Servlet + JDBC + Ajax + JavaScript + CSS + +DBUtil 等等

三、效果图

四、核心代码

用户管理控制层

public class UserServlet extends BaseBackServlet {     @Override    public String add(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 UserServlet add方法");        return null;    }     @Override    public String delete(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 UserServlet delete方法");         int id = Integer.parseInt(request.getParameter("id"));        userDAO.delete(id);        return "@admin_user_list";    }     @Override    public String update(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 UserServlet update方法");         Map params = new HashMap<>();        InputStream is = super.parseUpload(request, params);        System.out.println(params);         int id = Integer.parseInt(params.get("id"));        String password = params.get("password");         User user = userDAO.get(id);        user.setPassword(password);         userDAO.update(user);         return "@admin_user_list";    }     @Override    public String edit(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 UserServlet edit方法");         int id = Integer.parseInt(request.getParameter("id"));        User u = userDAO.get(id);         request.setAttribute("u", u);         return "admin/editUser.jsp";    }     @Override    public String list(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 UserServlet list方法");         List us = userDAO.list(page.getStart(), page.getCount());        int total = userDAO.getTotal();        page.setTotal(total);         request.setAttribute("us", us);        request.setAttribute("page", page);         return "admin/listUser.jsp";    }}

订单管理控制层

public class OrderServlet extends BaseBackServlet {     @Override    public String add(HttpServletRequest request, HttpServletResponse response, Page page) {        return null;    }     @Override    public String delete(HttpServletRequest request, HttpServletResponse response, Page page) {        return null;    }     @Override    public String update(HttpServletRequest request, HttpServletResponse response, Page page) {        return null;    }     @Override    public String edit(HttpServletRequest request, HttpServletResponse response, Page page) {        return null;    }     public String delivery(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 OrderServlet delivery方法");         int id = Integer.parseInt(request.getParameter("id"));        Order o = orderDAO.get(id);        o.setDeliveryDate(new Date());        o.setStatus(OrderDAO.waitConfirm);        orderDAO.update(o);        return "@admin_order_list";    }     @Override    public String list(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 OrderServlet list方法");         // 对订单对应的订单项进行初始化        List os = orderDAO.list(page.getStart(), page.getCount());        orderItemDAO.fill(os);         int total = orderDAO.getTotal();        page.setTotal(total);         request.setAttribute("os", os);        request.setAttribute("page", page);         return "admin/listOrder.jsp";    }}

品类控制层

public class CategoryServlet extends BaseBackServlet {     @Override    public String add(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了category add方法");         Map params = new HashMap<>();        InputStream is = super.parseUpload(request, params);         System.out.println(params);        String name = params.get("name");        Category c = new Category();        c.setName(name);        categoryDAO.add(c);         File imageFolder = new File(request.getSession().getServletContext().getRealPath("img/category"));        File file = new File(imageFolder, c.getId() + ".jpg");         try{            if(null != is && 0 != is.available()){                try(                        FileOutputStream fos = new FileOutputStream(file);                        ){                    byte[] b = new byte[1024 * 1024];                    int length = 0;                    while(-1 != (length = is.read(b))){                        fos.write(b, 0, length);                    }                    fos.flush();                    //通过以下代码，将文件保存为jsp格式                    BufferedImage img = ImageUtil.change2jpg(file);                    ImageIO.write(img, "jpg", file);                }            }        } catch (IOException e) {            e.printStackTrace();        }        return "@admin_category_list";    }     @Override    public String delete(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了category delete方法");        int id = Integer.parseInt(request.getParameter("id"));        categoryDAO.delete(id);        return "@admin_category_list";    }     @Override    public String update(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了category update方法");         Map params = new HashMap<>();        InputStream is = super.parseUpload(request, params);         System.out.println(params);        String name = params.get("name");        int id = Integer.parseInt(params.get("id"));         Category c = new Category();        c.setName(name);        c.setId(id);        categoryDAO.update(c);         File imageFolder = new File(request.getSession().getServletContext().getRealPath("img/category"));        File file = new File(imageFolder, c.getId() + ".jpg");         try{            if(null != is && 0 != is.available()){                try(                        FileOutputStream fos = new FileOutputStream(file);                ){                    byte[] b = new byte[1024 * 1024];                    int length = 0;                    while(-1 != (length = is.read(b))){                        fos.write(b, 0, length);                    }                    fos.flush();                    //通过以下代码，将文件保存为jsp格式                    BufferedImage img = ImageUtil.change2jpg(file);                    ImageIO.write(img, "jpg", file);                }            }        } catch (IOException e) {            e.printStackTrace();        }        return "@admin_category_list";    }     @Override    public String edit(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了category edit方法");         int id = Integer.parseInt(request.getParameter("id"));        Category category = categoryDAO.get(id);        request.setAttribute("c", category);        return "admin/editCategory.jsp";    }     @Override    public String list(HttpServletRequest request, HttpServletResponse response, Page page) {        List cs = categoryDAO.list(page.getStart(), page.getCount());        int total = categoryDAO.getTotal();        page.setTotal(total);         request.setAttribute("thecs", cs);        request.setAttribute("page", page);         return "admin/listCategory.jsp";    }}

产品控制层

public class ProductServlet extends BaseBackServlet {     @Override    public String add(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了Product add方法");         Map params = new HashMap<>();        InputStream inputStream = super.parseUpload(request, params);        System.out.println(params);         int cid = Integer.parseInt(params.get("cid"));        Category c = categoryDAO.get(cid);         String name = params.get("name");        String subTitle = params.get("subTitle");        float originalPrice = Float.parseFloat(params.get("originalPrice"));        float promotePrice = Float.parseFloat(params.get("promotePrice"));        int stock = Integer.parseInt(params.get("stock"));         Product p = new Product();         p.setCategory(c);        p.setName(name);        p.setSubTitle(subTitle);        p.setOriginalPrice(originalPrice);        p.setPromotePrice(promotePrice);        p.setStock(stock);        p.setCreateDate(new Date());         productDAO.add(p);        return "@admin_product_list?cid=" + cid;    }     @Override    public String delete(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了Product delete方法");         int id = Integer.parseInt(request.getParameter("id"));        Product p = productDAO.get(id);        productDAO.delete(id);        return "@admin_product_list?cid=" + p.getCategory().getId();    }     @Override    public String update(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了Product update方法");         Map params = new HashMap<>();        InputStream inputStream = super.parseUpload(request, params);         int cid = Integer.parseInt(params.get("cid"));        Category c = categoryDAO.get(cid);         int id = Integer.parseInt(params.get("id"));        String name = params.get("name");        String subTitle = params.get("subTitle");        float originalPrice = Float.parseFloat(params.get("originalPrice"));        float promotePrice = Float.parseFloat(params.get("promotePrice"));        int stock = Integer.parseInt(params.get("stock"));         Product p = new Product();         p.setId(id);        p.setName(name);        p.setSubTitle(subTitle);        p.setOriginalPrice(originalPrice);        p.setPromotePrice(promotePrice);        p.setStock(stock);        p.setCategory(c);        p.setCreateDate(new Date());         productDAO.update(p);        return "@admin_product_list?cid=" + p.getCategory().getId();    }     @Override    public String edit(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了Product edit方法");         int id =Integer.parseInt(request.getParameter("id"));        Product p = productDAO.get(id);        request.setAttribute("p",p);        return "admin/editProduct.jsp";    }     public String updatePropertyValue(HttpServletRequest request, HttpServletResponse response, Page page){        System.out.println("调用了Product updatePropertyValue方法");         int  pvid = Integer.parseInt(request.getParameter("pvid"));        String value = request.getParameter("value");         PropertyValue pv = propertyValueDAO.get(pvid);        pv.setValue(value);         propertyValueDAO.update(pv);         return "%success";    }     public String editPropertyValue(HttpServletRequest request, HttpServletResponse response, Page page){        System.out.println("调用了Product editPropertyValue方法");         int id = Integer.parseInt(request.getParameter("id"));        Product p = productDAO.get(id);        request.setAttribute("p", p);         // 初始化属性，将产品对应的属性全部        propertyValueDAO.init(p);         List pvs = propertyValueDAO.list(p.getId());         request.setAttribute("pvs", pvs);         return "admin/editPropertyValue.jsp";    }     @Override    public String list(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了Product list方法");         int cid = Integer.parseInt(request.getParameter("cid"));        Category c = categoryDAO.get(cid);         List ps = productDAO.list(cid, page.getStart(), page.getCount());         int total = productDAO.getTotal(cid);        page.setTotal(total);        page.setParam("&cid=" + c.getId());         request.setAttribute("ps", ps);        request.setAttribute("c", c);        request.setAttribute("page", page);         return "admin/listProduct.jsp";    }}

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