基于javaweb+mysql的jsp+servlet家政服务系统(java+jsp+jquery+servlet+mysql)

这是一个基于JavaWeb技术栈的JSP和Servlet家政服务系统的简化版本。以下是系统的核心功能和部分代码示例：

// Servlet处理用户登录
@WebServlet("/login")
public class LoginServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String username = request.getParameter("username");
        String password = request.getParameter("password");
 
        UserService userService = new UserServiceImpl();
        User user = userService.login(username, password);
        if (user != null) {
            request.getSession().setAttribute("user", user);
            response.sendRedirect("home.jsp");
        } else {
            response.sendRedirect("login.jsp");
        }
    }
}
 
// Servlet处理订单
@WebServlet("/order")
public class OrderServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String serviceName = request.getParameter("serviceName");
        String serviceDate = request.getParameter("serviceDate");
        String serviceTime = request.getParameter("serviceTime");
        String address = request.getParameter("address");
        String userId = request.getParameter("userId");
 
        OrderService orderService = new OrderServiceImpl();
        boolean isSuccess = orderService.placeOrder(serviceName, serviceDate, serviceTime, address, userId);
        if (isSuccess) {
            response.sendRedirect("home.jsp");
        } else {
            response.sendRedirect("order.jsp");
        }
    }
}
 
// 服务类实现用户登录
public class UserServiceImpl implements UserService {
    public User login(String username, String password) {
        UserDao userDao = new UserDaoImpl();
        return userDao.findByUsernameAndPassword(username, password);
    }
}
 
// 服务类实现订单处理
public class OrderServiceImpl implements OrderService {
    public boolean placeOrder(String serviceName, String serviceDate, String serviceTime, String address, String userId) {
        OrderDao orderDao = new OrderDaoImpl();
        return orderDao.insert(new Order(servic