登录拦截

/**
 * 检查用户是否登录
 */
@Slf4j
@WebFilter(filterName = "LoginCheckFilter", urlPatterns = "/*")
public class LoginCheckFilter implements Filter {

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        String requestURI = request.getRequestURI();
        log.info("拦截到请求：{}",requestURI);

        String[] urls = new String[]{
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "front/**"
        };

        boolean check = check(urls, requestURI);

        if (check || request.getSession().getAttribute("employee") != null) {
            filterChain.doFilter(request, response);
            return;
        }
        log.info("用户未登录");
        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
    }

    public boolean check(String[] urls, String requestURI) {
        AntPathMatcher antPathMatcher = new AntPathMatcher();
        for (String url : urls) {
            boolean match = antPathMatcher.match(url, requestURI);
            if (match) return true;
        }
        return false;
    }
}