今天完成的事情：

拦截器里通过Cookie中判断Token的有效性来判断用户是否登录。

public class LoginInterceptor implements HandlerInterceptor {
    @Autowired
    private UserServiceImpl userService;

    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {

        Cookie[] cookie = httpServletRequest.getCookies();
        if (cookie != null) {
            for (int i = 0; i < cookie.length; i++) {
                if (cookie[i].getName().equals("token")) {
                    String token = cookie[i].getValue();
                    byte[] tk = TypeUtil.hexStringToByte(token);
                    byte[] tk1 = DES.decrypt(tk, "12345678");
                    String tk2 = new String(tk1);
                    String id = "";
                    String time = "";
                    for (int j = 0; j < tk2.length(); j++) {
                        char c = tk2.charAt(j);
                        if (c == '=') {
                            for (int k = j + 1; k < tk2.length(); k++)
                                time = time + tk2.charAt(k);
                            break;
                        }
                        id = id + c;
                    }
                    if (userService.select(Long.parseLong(id)) != null) {

                        return true;
                    }
                }
            }
        }
        httpServletRequest.getSession();
        String contextpath = httpServletRequest.getScheme() + "://" + httpServletRequest.getServerName() + ":" + httpServletRequest.getServerPort() + httpServletRequest.getContextPath();
        String uri = contextpath + "/login.html";
        httpServletResponse.sendRedirect(uri);
        return true;
    }

    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}

里面的String contextpath = httpServletRequest.getScheme() + "://" + httpServletRequest.getServerName() + ":" + httpServletRequest.getServerPort() + httpServletRequest.getContextPath();

request.getContextPath(); // 应用的web目录的名称

明天计划的事情：

解决问题，完成判断是否登陆。试着完成任务五。

遇到的问题：

在主页点击跳转到职业页面是，出现错误。。。

收获：无