一、代码

        final String userAgent = request.getHeader("User-agent");
        final String referer = request.getHeader("referer");
        UserAgent agent = UserAgentUtil.parse(userAgent);
        if (StrUtil.contains(referer, "swagger-ui")
                || agent == null
                || "MSIE".equals(agent.getBrowser().getName())
                || "MSIE11".equals(agent.getBrowser().getName())
                || "Firefox".equals(agent.getBrowser().getName())
                || userAgent.toLowerCase().startsWith("postman")
                || userAgent.toLowerCase().endsWith("hutool")
                || userAgent.toLowerCase().startsWith("apache-httpclient")) {
            fileName = URLEncoder.encode(fileName, "UTF-8");
        } else {
            byte[] bytes = fileName.getBytes(StandardCharsets.UTF_8);
            fileName = new String(bytes, StandardCharsets.ISO_8859_1);
        }
        response.setCharacterEncoding("UTF-8");
        response.setContentType(contentType);
        response.setHeader("Content-disposition",
                String.format("attachment;filename=\"%s\"; filename*=utf-8'zh_cn'%s", fileName, fileName)
        );