判断http 请求来自于手机还是PC

首先收集了部分客户端请求头部信息如下

iphone微信：User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 8_1_2 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Mobile/12B440 MicroMessenger/6.2.4 NetType/WIFI Language/eniPhone—safariUser-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 8_1_2 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12B440 Safari/600.1.4

Android-Chrome

User-Agent:Mozilla/5.0 (linux; Android 4.4.4; HTC D820u Build/KTU84P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.89 Mobile Safari/537.36

PC-ChromeUser-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36PC-FirefoxUser-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0PC-IEUser-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko

我们需要判断Http请求是来自手机端还是电脑端，关键是取得User-Agent的信息，进行筛选判断即可。

public static boolean  isMobileDevice(String requestHeader){        /**         * android : 所有android设备         * mac os : iphone ipad         * windows phone:Nokia等windows系统的手机         */        String[] deviceArray = new String[]{"android","mac os","windows phone"};        if(requestHeader == null)            return false;        requestHeader = requestHeader.toLowerCase();        for(int i=0;i<deviceArray.length;i++){            if(requestHeader.indexOf(deviceArray[i])>0){                return true;            }        }        return false;}在controller中获取http头信息如下：
String requestHeader = request.getHeader("user-agent");        if(JudgeRequestDeviceUtil.isMobileDevice(requestHeader)){            logger.debug("使用手机浏览器");        }else{            logger.debug("使用web浏览器");        }php: 判断是不是微信客户端的请求function is_in_wx(){    $user_agent = $_SERVER['HTTP_USER_AGENT'];    return false!=strpos($user_agent, 'MicroMessenger');}php: 判断是不是手机的请求 
function is_mobile_visit(){    // 如果有HTTP_X_WAP_PROFILE则一定是移动设备    if (isset ($_SERVER['HTTP_X_WAP_PROFILE']))    {        return true;    }    // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息    if (isset ($_SERVER['HTTP_VIA']))    {        // 找不到为flase,否则为true        return stristr($_SERVER['HTTP_VIA'], "wap") ? true : false;    }    // 脑残法，判断手机发送的客户端标志,兼容性有待提高    if (isset ($_SERVER['HTTP_USER_AGENT']))    {        $clientkeyWords = array ('nokia',                'sony',                'eriCSSon',                'mot',                'samsung',                'htc',                'sgh',                'lg',                'sharp',                'sie-',                'philips',                'panasonic',                'alcatel',                'lenovo',                'iphone',                'ipod',                'blackberry',                'meizu',                'android',                'netfront',                'symbian',                'ucweb',                'windowsce',                'palm',                'Operamini',                'operamobi',                'openwave',                'nexusone',                'cldc',                'midp',                'wap',                'mobile'        );        // 从HTTP_USER_AGENT中查找手机浏览器的关键字        if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT'])))        {            return true;        }    }    // 协议法，因为有可能不准确，放到最后判断    if (isset ($_SERVER['HTTP_ACCEPT']))    {        // 如果只支持wml并且不支持html那一定是移动设备        // 如果支持wml和html但是wml在html之前则是移动设备        if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html'))))        {            return true;        }    }    return false;}