Host 主机头攻击&&点击劫持

public String intercept(ActionInvocation action) throws Exception {
        HttpServletRequest request = ServletActionContext.getRequest();
        HttpServletResponse response = ServletActionContext.getResponse();
        //点击劫持
        response.setHeader("x-frame-options","SAMEORIGIN");
        //获取Referer
        String referer = request.getHeader("Referer");
        //拦截不合法的Referer
        if (referer != null && !isInclude(Authorize.REFERER_LIST, referer)) {
            return "unauthorizedReferer";
        }
        String host = request.getHeader("Host");
        //拦截不合法的host
        if (host != null && !isInclude(Authorize.HOST_LIST, host)) {
            return "unauthorizedHost";
        }
        String xForwardedHost = request.getHeader("X-Forwarded-Host");
        if(xForwardedHost != null && !isInclude(Authorize.HOST_LIST,xForwardedHost)){
            return "unauthorizedHost";
        }
        response.setHeader("Server", "unknown1");
        String result = action.invoke();
        response.setHeader("Server", "unknown2");
        return result;
    }