一、项目简述

功能： 商品的分类展示，用户的注册登录，购物车，订单结算， 购物车加减，后台商品管理，分类管理，订单管理等等功 能。

二、项目运行

环境配置： Jdk1.8 + Tomcat8.5 + mysql + Eclispe (IntelliJ IDEA,Eclispe,MyEclispe,Sts 都支持)

项目技术： Jdbc+ Servlert + Jsp + css + JavaScript + JQuery + Ajax + Fileupload等等。

提交订单代码:

提交订单:

@WebServlet(name = "order_submit",urlPatterns = "/order_submit")
public class OrderSubmitServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        if(request.getSession().getAttribute("user")!=null) {
            request.getRequestDispatcher("/order_submit.jsp").forward(request, response);
        }else {
            request.setAttribute("failMsg", "请登录后，再提交订单！");
            request.getRequestDispatcher("/user_login.jsp").forward(request, response);
        }
    }
}

用户登陆：

登录:

@WebServlet(name = "user_login",urlPatterns = "/user_login")
public class UserLoginServlet extends HttpServlet {
    private UserService uService = new UserService();
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String ue = request.getParameter("ue");
        String password = request.getParameter("password");
        User user = uService.login(ue, password);
        if(user==null) {
            request.setAttribute("failMsg", "用户名、邮箱或者密码错误，请重新登录！");
            request.getRequestDispatcher("/user_login.jsp").forward(request, response);
        }else {
            request.getSession().setAttribute("user", user);
            request.getRequestDispatcher("/user_center.jsp").forward(request, response);
        }
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }
}

用户注册：

注册:

@WebServlet(name = "user_register",urlPatterns = "/user_rigister")
public class UserRegisterServlet extends HttpServlet {
    private UserService uService = new UserService();
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        User user = new User();
        try {
            BeanUtils.copyProperties(user, request.getParameterMap());
        } catch (IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        if(uService.register(user)) {
            request.setAttribute("msg", "注册成功，请登录！");
            request.getRequestDispatcher("user_login.jsp").forward(request, response);
        }else {
            request.setAttribute("msg", "用户名或邮箱重复，请重新填写！");
            request.getRequestDispatcher("user_register.jsp").forward(request, response);
        }
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }
}

修改密码：

修改密码：

@WebServlet(name = "user_changepwd",urlPatterns = "/user_changepwd")
public class UserChangePwd extends HttpServlet {

    private UserService uService = new UserService();

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String password = request.getParameter("password");
        String newPwd = request.getParameter("newPassword");

        User u = (User) request.getSession().getAttribute("user");
        if(password.equals(u.getPassword())) {
            u.setPassword(newPwd);
            uService.updatePwd(u);
            request.setAttribute("msg", "修改成功！");
            request.getRequestDispatcher("/user_center.jsp").forward(request, response);
        }else {
            request.setAttribute("failMsg", "修改失败，原密码不正确，你再想想！");
            request.getRequestDispatcher("/user_center.jsp").forward(request, response);
        }
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }
}