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                ``` /** * @author 張躍帥 * @Description: 獲取系統信息-工具 * @date 2020/08/12 */ public class UaUtil { /** * 獲取客戶端瀏覽器 */ public static String getBrowser(HttpServletRequest request) { // 獲取請求代理頭 UserAgent userAgent = getUserAgent(request); // 判斷 if (ObjectUtil.isEmpty(userAgent)) { // 返回 return StrUtil.DASHED; } else { // 獲取瀏覽器 String browser = userAgent.getBrowser().toString(); // 判斷 if (StrUtil.isNotBlank(browser) && browser.length() > 250) { // 賦值 browser = browser.substring(0, 250); } // 返回 return "Unknown".equals(browser) ? StrUtil.DASHED : browser; } } /** * 獲取客戶端操作系統 */ public static String getOs(HttpServletRequest request) { // 獲取請求代理頭 UserAgent userAgent = getUserAgent(request); // 判斷 if (ObjectUtil.isEmpty(userAgent)) { // 返回 return StrUtil.DASHED; } else { // 獲取操作系統 String os = userAgent.getOs().toString(); // 判斷 if (StrUtil.isNotBlank(os) && os.length() > 250) { // 賦值 os = os.substring(0, 250); } // 返回 return "Unknown".equals(os) ? StrUtil.DASHED : os; } } /** * 獲取請求代理頭 */ private static UserAgent getUserAgent(HttpServletRequest request) { // 獲取標題忽略大小寫 String userAgentStr = ServletUtil.getHeaderIgnoreCase(request, "User-Agent"); // 解析 UserAgent userAgent = UserAgentUtil.parse(userAgentStr); // 判空 if (ObjectUtil.isNotEmpty(userAgentStr)) { // 如果根本沒獲取到瀏覽器 if ("Unknown".equals(userAgent.getBrowser().getName())) { // 則將ua設置為瀏覽器 userAgent.setBrowser(new Browser(userAgentStr, null, "")); } } // 返回 return userAgent; } }
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