每日记录

今天进行了登陆界面的实现，包括登陆注册，记住密码，验证码注册。

@WebServlet("/loginServlet")
public class LoginServlet extends HttpServlet {

    private UserService service = new UserService();
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        //1接受用户名和密码
        String username=request.getParameter("username");
        String password = request.getParameter("password");
        String remember = request.getParameter("remember");
        User user = service.login(username, password);

        if (user !=null){

            //登陆成功
            //获取复选框数据

            if ("1".equals(remember)){
                //勾选，发送cookie
                //创建cookie,
                Cookie c_username=new Cookie("username",username);
                Cookie c_password=new Cookie("password",password);
                //设置存活时间
                c_username.setMaxAge(60*60*24*7);
                c_password.setMaxAge(60*60*24*7);
                //2.发送
                response.addCookie(c_username);
                response.addCookie(c_password);
            }
            //将user对象存储到session
            HttpSession session = request.getSession();
            session.setAttribute("user",user);
            String contextPath = request.getContextPath();

            response.sendRedirect(contextPath+"/selectAllServlet");
        }else {

            //失败，跳转回
            //存储错误信息到request
            request.setAttribute("login_mag","用户名或密码错误");
            //跳转到login.jsp
            request.getRequestDispatcher("/login.jsp").forward(request,response);
        }

    }

@WebServlet("/registerServlet")
public class RegisterServlet extends HttpServlet {

    private UserService service = new UserService();
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        String username=request.getParameter("username");
        String password = request.getParameter("password");

        User user =new User();
        user.setUsername(username);
        user.setPassword(password);
        //获取用户输入的验证码
        String checkCode = request.getParameter("checkCode");

        //程序生成的验证码,从session
        HttpSession session = request.getSession();
       String checkCodeGen = (String) session.getAttribute("checkCodeGen");

       //比对
        if(!checkCodeGen.equalsIgnoreCase(checkCode)){
            request.setAttribute("register_mag","验证码错误");
            request.getRequestDispatcher("/register.jsp").forward(request,response);

            //不允许注册
            return;
        }
//调用service注册
        boolean register = service.register(user);
        //判断成功与否
        if(register){
            //成功，到登录页面
            request.setAttribute("register_mag","注册成功，请登录");
            request.getRequestDispatcher("/login.jsp").forward(request,response);
        }else {
            //失败，到注册页面
            request.setAttribute("register_mag","用户名已存在");
            request.getRequestDispatcher("/register.jsp").forward(request,response);
        }

    }