資料封裝的 UserAgent 程式碼如下：

package com.defonds.sample.web.entity;/** * 根據 user agent string 來判斷出客戶端的瀏覽器以及平臺等資訊 * @author Defonds */public class UserAgent { private String browserType;//瀏覽器型別 private String browserVersion;//瀏覽器版本 private String platformType;//平臺型別 private String platformSeries;//平臺系列 private
 
 String platformVersion;//平臺版本  public UserAgent(){}  public UserAgent(String browserType, String browserVersion,   String platformType, String platformSeries, String platformVersion){  this.browserType = browserType;  this.browserVersion = browserVersion;  this.platformType = platformType;  this.platformSeries = platformSeries;  this
 
.platformVersion = platformVersion; }  public String getBrowserType() {  return browserType; } public void setBrowserType(String browserType) {  this.browserType = browserType; } public String getBrowserVersion() {  return browserVersion; } public void setBrowserVersion(String browserVersion) {  this
 
.browserVersion = browserVersion; } public String getPlatformType() {  return platformType; } public void setPlatformType(String platformType) {  this.platformType = platformType; } public String getPlatformSeries() {  return platformSeries; } public void setPlatformSeries(String platformSeries) {  this.platformSeries = platformSeries; } public String getPlatformVersion() {  return platformVersion; } public void setPlatformVersion(String platformVersion) {  this.platformVersion = platformVersion; } }

        判斷處理的 UserAgentUtil 程式碼如下：

package com.defonds.sample.common.util;import org.apache.commons.lang.StringUtils;import com.defonds.sample.web.entity.UserAgent;/** * 根據 user agent string 判斷使用者的平臺、瀏覽器 * 參考資料 * ************************************************************************************************************************************************** *  * 桌上型電腦 *  * Linux Ubuntu * Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.2pre) Gecko/20100225 Ubuntu/9.10 (karmic) Namoroka/3.6.2pre * -------------------------------------------------------------------------------------------------------------------------------------------------- * Linux Mandriva 2008.1 * Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008072403 Mandriva/3.0.1-1mdv2008.1 (2008.1) Firefox/3.0.1 * -------------------------------------------------------------------------------------------------------------------------------------------------- * Linux suSE 10.1 * Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.3) Gecko/20060425 SUSE/1.5.0.3-7 Firefox/1.5.0.31 * -------------------------------------------------------------------------------------------------------------------------------------------------- * Windows XP SP3 * Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5 (.NET CLR 3.5.30729) * -------------------------------------------------------------------------------------------------------------------------------------------------- * Windows Vista * Mozilla/5.0 (Windows; U; Windows NT 6.1; nl; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 * Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 (.NET CLR 3.5.30729) * -------------------------------------------------------------------------------------------------------------------------------------------------- * windows 2000 * Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.8.1b2) Gecko/20060821 Firefox/2.0b2 * -------------------------------------------------------------------------------------------------------------------------------------------------- * Windows 7 * Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20100101 Firefox/14.0.1 * -------------------------------------------------------------------------------------------------------------------------------------------------- * Windows Server 2008 * Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 (.NET CLR 3.5.30729) * -------------------------------------------------------------------------------------------------------------------------------------------------- * iMac OSX 10.7.4 * Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:13.0) Gecko/20100101 Firefox/13.0.1 * -------------------------------------------------------------------------------------------------------------------------------------------------- * Mac OS X * Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9 * -------------------------------------------------------------------------------------------------------------------------------------------------- *  * 手持裝置 *  * iPad * Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10 * -------------------------------------------------------------------------------------------------------------------------------------------------- * iPad 2 * Mozilla/5.0 (iPad; CPU OS 5_1 like Mac OS X; en-us) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B176 Safari/7534.48.3 * -------------------------------------------------------------------------------------------------------------------------------------------------- * iPhone 4 * Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7 * -------------------------------------------------------------------------------------------------------------------------------------------------- * iPhone 5 * Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3 * -------------------------------------------------------------------------------------------------------------------------------------------------- * Android * Mozilla/5.0 (Linux; U; Android 2.2; en-us; Nexus One Build/FRF91) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1 * ************************************************************************************************************************************************** * @author Defonds */public class UserAgentUtil { /**  * 用途：根據客戶端 User Agent Strings 判斷其瀏覽器、操作平臺  * if 判斷的先後次序：  * 根據裝置的使用者使用量降序排列，這樣對於大多數使用者來說可以少判斷幾次即可拿到結果：  *  >>作業系統:Windows > 蘋果 > 安卓 > Linux > ...  *  >>Browser:Chrome > FF > IE > ...  * @param userAgentStr  * @return  */ public static UserAgent getUserAgent(String userAgent) {  if (StringUtils.isBlank(userAgent)) {   return null;  }     if (userAgent.contains("Windows")) {//主流應用靠前   /**    * ******************    * 桌上型電腦 Windows 系列    * ******************    * Windows NT 6.2 - Windows 8    * Windows NT 6.1 - Windows 7    * Windows NT 6.0 - Windows Vista    * Windows NT 5.2 - Windows Server 2003; Windows XP x64 Edition    * Windows NT 5.1 - Windows XP    * Windows NT 5.01 - Windows 2000, Service Pack 1 (SP1)    * Windows NT 5.0 - Windows 2000    * Windows NT 4.0 - Microsoft Windows NT 4.0    * Windows 98; Win 9x 4.90 - Windows Millennium Edition (Windows Me)    * Windows 98 - Windows 98    * Windows 95 - Windows 95    * Windows CE - Windows CE    * 判斷依據:http://msdn.microsoft.com/en-us/library/ms537503(v=vs.85).aspx    */   if (userAgent.contains("Windows NT 6.2")) {//Windows 8    return judgeBrowser(userAgent, "Windows", "8" , null);//判斷瀏覽器   } else if (userAgent.contains("Windows NT 6.1")) {//Windows 7    return judgeBrowser(userAgent, "Windows", "7" , null);   } else if (userAgent.contains("Windows NT 6.0")) {//Windows Vista    return judgeBrowser(userAgent, "Windows", "Vista" , null);   } else if (userAgent.contains("Windows NT 5.2")) {//Windows XP x64 Edition    return judgeBrowser(userAgent, "Windows", "XP" , "x64 Edition");   } else if (userAgent.contains("Windows NT 5.1")) {//Windows XP    return judgeBrowser(userAgent, "Windows", "XP" , null);   } else if (userAgent.contains("Windows NT 5.01")) {//Windows 2000, Service Pack 1 (SP1)    return judgeBrowser(userAgent, "Windows", "2000" , "SP1");   } else if (userAgent.contains("Windows NT 5.0")) {//Windows 2000    return judgeBrowser(userAgent, "Windows", "2000" , null);   } else if (userAgent.contains("Windows NT 4.0")) {//Microsoft Windows NT 4.0    return judgeBrowser(userAgent, "Windows", "NT 4.0" , null);   } else if (userAgent.contains("Windows 98; Win 9x 4.90")) {//Windows Millennium Edition (Windows Me)    return judgeBrowser(userAgent, "Windows", "ME" , null);   } else if (userAgent.contains("Windows 98")) {//Windows 98    return judgeBrowser(userAgent, "Windows", "98" , null);   } else if (userAgent.contains("Windows 95")) {//Windows 95    return judgeBrowser(userAgent, "Windows", "95" , null);   } else if (userAgent.contains("Windows CE")) {//Windows CE    return judgeBrowser(userAgent, "Windows", "CE" , null);   }   } else if (userAgent.contains("Mac OS X")) {   /**    * ********    * 蘋果系列    * ********    * iPod -  Mozilla/5.0 (iPod; U; CPU iPhone OS 4_3_1 like Mac OS X; zh-cn) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5    * iPad -  Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10    * iPad2 -  Mozilla/5.0 (iPad; CPU OS 5_1 like Mac OS X; en-us) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B176 Safari/7534.48.3    * iPhone 4 - Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7    * iPhone 5 - Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3    * 判斷依據:http://www.useragentstring.com/pages/Safari/    * 參考:http://stackoverflow.com/questions/7825873/what-is-the-ios-5-0-user-agent-string    * 參考:http://stackoverflow.com/questions/3105555/what-is-the-iphone-4-user-agent    */   if (userAgent.contains("iPod")) {    return judgeBrowser(userAgent, "iPod", null , null);//判斷瀏覽器   }  }  return null; }  /**  * 用途：根據客戶端 User Agent Strings 判斷其瀏覽器  * if 判斷的先後次序：  * 根據瀏覽器的使用者使用量降序排列，這樣對於大多數使用者來說可以少判斷幾次即可拿到結果：  *  >>Browser:Chrome > FF > IE > ...  * @param userAgent:user agent  * @param platformType:平臺  * @param platformSeries:系列  * @param platformVersion:版本  * @return  */ private static UserAgent judgeBrowser(String userAgent, String platformType, String platformSeries, String platformVersion) {  if (userAgent.contains("Chrome")) {   /**    * ***********    * Chrome 系列    * ***********    * Chrome 24.0.1295.0 - Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.15 (KHTML, like Gecko) Chrome/24.0.1295.0 Safari/537.15    * Chrome 24.0.1292.0 - Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.14 (KHTML, like Gecko) Chrome/24.0.1292.0 Safari/537.14    * Chrome 24.0.1290.1 - Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.13 (KHTML, like Gecko) Chrome/24.0.1290.1 Safari/537.13    * 判斷依據:http://www.useragentstring.com/pages/Chrome/    */   String temp = userAgent.substring(userAgent.indexOf("Chrome/") + 7);//拿到User Agent String "Chrome/" 之後的字串,結果形如"24.0.1295.0 Safari/537.15"或"24.0.1295.0"   String chromeVersion = null;   if (temp.indexOf(" ") < 0) {//temp形如"24.0.1295.0"    chromeVersion = temp;   } else {//temp形如"24.0.1295.0 Safari/537.15"    chromeVersion = temp.substring(0, temp.indexOf(" "));   }   return new UserAgent("Chrome", chromeVersion, platformType, platformSeries, platformVersion);  } else if (userAgent.contains("Firefox")) {   /**    * *******    * FF 系列    * *******    * Firefox 16.0.1 - Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:16.0.1) Gecko/20121011 Firefox/16.0.1    * Firefox 15.0a2 - Mozilla/5.0 (Windows NT 6.1; rv:15.0) Gecko/20120716 Firefox/15.0a2    * Firefox 15.0.2 - Mozilla/5.0 (Windows NT 6.2; WOW64; rv:15.0) Gecko/20120910144328 Firefox/15.0.2    * 判斷依據:http://www.useragentstring.com/pages/Firefox/    */   String temp = userAgent.substring(userAgent.indexOf("Firefox/") + 8);//拿到User Agent String "Firefox/" 之後的字串,結果形如"16.0.1 Gecko/20121011"或"16.0.1"   String ffVersion = null;   if (temp.indexOf(" ") < 0) {//temp形如"16.0.1"    ffVersion = temp;   } else {//temp形如"16.0.1 Gecko/20121011"    ffVersion = temp.substring(0, temp.indexOf(" "));   }   return new UserAgent("Firefox", ffVersion, platformType, platformSeries, platformVersion);  } else if (userAgent.contains("MSIE")) {   /**    * *******    * IE 系列    * *******    * MSIE 10.0 - Internet Explorer 10    * MSIE 9.0 - Internet Explorer 9    * MSIE 8.0 - Internet Explorer 8 or IE8 Compatibility View/Browser Mode    * MSIE 7.0 - Windows Internet Explorer 7 or IE7 Compatibility View/Browser Mode    * MSIE 6.0 - Microsoft Internet Explorer 6    * 判斷依據:http://msdn.microsoft.com/en-us/library/ms537503(v=vs.85).aspx    */   if (userAgent.contains("MSIE 10.0")) {//Internet Explorer 10    return new UserAgent("Internet Explorer", "10", platformType, platformSeries, platformVersion);   } else if (userAgent.contains("MSIE 9.0")) {//Internet Explorer 9    return new UserAgent("Internet Explorer", "9", platformType, platformSeries, platformVersion);   } else if (userAgent.contains("MSIE 8.0")) {//Internet Explorer 8    return new UserAgent("Internet Explorer", "8", platformType, platformSeries, platformVersion);   } else if (userAgent.contains("MSIE 7.0")) {//Internet Explorer 7    return new UserAgent("Internet Explorer", "7", platformType, platformSeries, platformVersion);   } else if (userAgent.contains("MSIE 6.0")) {//Internet Explorer 6    return new UserAgent("Internet Explorer", "6", platformType, platformSeries, platformVersion);   }  } else {//暫時支援以上三個主流.其它瀏覽器,待續...   return new UserAgent(null, null, platformType, platformSeries, platformVersion);  }  return null; }}

        後記，同事分享了一個 PHP 版的 User Agent String 判斷客戶端的原始碼，支援的比較全，大家也可以參考一下。部分程式碼摘錄如下：

function CID_windows_detect_os($ua) { $os_name = $os_code = $os_ver = $pda_name = $pda_code = $pda_ver = null; if (preg_match('/Windows 95/i', $ua) || preg_match('/Win95/', $ua)) {  $os_name = "Windows";  $os_code = "windows";  $os_ver = "95"; } elseif (preg_match('/Windows NT 5.0/i', $ua) || preg_match('/Windows 2000/i', $ua)) {  $os_name = "Windows";  $os_code = "windows";  $os_ver = "2000"; } elseif (preg_match('/Win 9x 4.90/i', $ua) || preg_match('/Windows ME/i', $ua)) {  $os_name = "Windows";  $os_code = "windows";  $os_ver = "ME"; } elseif (preg_match('/Windows.98/i', $ua) || preg_match('/Win98/i', $ua)) {  $os_name = "Windows";  $os_code = "windows";  $os_ver = "98"; } elseif (preg_match('/Windows NT 6.0/i', $ua)) {  $os_name = "Windows";  $os_code = "windows_vista";  $os_ver = "Vista"; } elseif (preg_match('/Windows NT 6.1/i', $ua)) {  $os_name = "Windows";  $os_code = "windows_win7";  $os_ver = "7";   } elseif (preg_match('/Windows NT 5.1/i', $ua)) {  $os_name = "Windows";  $os_code = "windows";  $os_ver = "XP"; } elseif (preg_match('/Windows NT 5.2/i', $ua)) {  $os_name = "Windows";  $os_code = "windows";  if (preg_match('/Win64/i', $ua)) {   $os_ver = "XP 64 bit";  } else {   $os_ver = "Server 2003";  } } elseif (preg_match('/Mac_PowerPC/i', $ua)) {  $os_name = "Mac OS";  $os_code = "macos"; }elseif (preg_match('/Windows Phone/i', $ua)) {  $matches = explode(';',$ua);  $os_name = $matches[2];  $os_code = "windows_phone7"; } elseif (preg_match('/Windows NT 4.0/i', $ua) || preg_match('/WinNT4.0/i', $ua)) {  $os_name = "Windows";  $os_code = "windows";  $os_ver = "NT 4.0"; } elseif (preg_match('/Windows NT/i', $ua) || preg_match('/WinNT/i', $ua)) {  $os_name = "Windows";  $os_code = "windows";  $os_ver = "NT";