响应头设置，预防HTTP响应头缺失漏洞

  /**
     * @param req
     * @param resp  
     * @Description 设置响应头
     * @Throws
     * @Return void
     * @Date 2021-07-06 19:17:16
     * @Author WangKun
     **/
    public static void setResponseHeader(HttpServletRequest req, HttpServletResponse resp) {
        try {
            req.setCharacterEncoding("UTF-8");
            // 响应头设置，预防HTTP响应头缺失漏洞
            resp.setHeader("X-Frame-Options", "SAMEORIGIN");
            resp.setHeader("Strict-Transport-Security", "max-age=31536000; includeSubdomains; preload");
            String origin = req.getHeader("Origin");
            if (origin == null) {
                origin = req.getHeader("Referer");
            }
            resp.setHeader("Referrer-Policy", origin);
            resp.setHeader("Content-Security-Policy", "default-src 'self'");
            resp.setHeader("X-Permitted-Cross-Domain-Policies", "master-only");
            resp.setHeader("X-XSS-Protection", "1;mode=block");
            resp.setHeader("X-Download-Options", "noopen");
            resp.setHeader("X-Content-TYpe-Options", "nosniff");

            resp.setHeader("Access-Control-Allow-Origin", origin);
            resp.setHeader("Access-Control-Allow-Credentials", "true");
            resp.setHeader("Access-Control-Max-Age", "3600");
            // 判断请求方法是否为OPTIONS
            if ("OPTIONS".equals(req.getMethod())) {
                // 设置响应头信息，禁止OPTIONS请求
                resp.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, HEAD");
                resp.setStatus(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
            } else {
                resp.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, HEAD,OPTIONS");
            }

            resp.setHeader("Access-Control-Allow-Headers", "User-Agent,Origin,Cache-Control,Content-type,Date,Server,withCredentials,AccessToken");
            resp.setHeader("Access-Control-Expose-Headers", "accession");
            resp.setHeader("Access-Control-Request-Headers", "accession");
            resp.setHeader("Expires", "-1");
            resp.setHeader("Cache-Control", "no-cache");
            resp.setHeader("pragma", "no-cache");
            resp.setHeader("Cross-Origin-Embedder-Policy", "require-corp");
            resp.setHeader("Cross-Origin-Opener-Policy", "same-origin");
//            resp.setHeader("Cross-Origin-Resource-Policy", "same-origin");
//            resp.setHeader("Cross-Origin-Resource-Policy","same-site");
            resp.setHeader("Cross-Origin-Resource-Policy", "cross-origin");
            resp.setHeader("Permissions-Policy", "geolocation=(self)");
//            resp.setHeader("Clear-Site-Data", "cache,cookies");
            Cookie[] cookies = req.getCookies();
            if (cookies != null) {
                for (Cookie cookie : cookies) {
                    String value = cookie.getValue();
                    String builder = cookie.getName() + "=" + value + ";" +
                            "Secure;" +//Cookie设置Secure标识
                            "HttpOnly;";//Cookie设置HttpOnly
                    resp.addHeader("Set-Cookie", builder);
                }
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
    }