根据Request检测是否为移动端设备访问

package com.hanniwan.site.utils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;

/**
 * 检测是否为移动端设备访问
 * 
 * @author
 * @group
 * @Version
 * @Date
 */
public class CheckMobile {
    
    //  是单词边界(连着的两个(字母字符 与 非字母字符) 之间的逻辑上的间隔),  
    // 字符串在编译时会被转码一次,所以是 "\b"  
    // B 是单词内部逻辑间隔(连着的两个字母字符之间的逻辑上的间隔)  
    static String phoneReg = "\b(ip(hone|od)|android|opera m(ob|in)i"  
            +"|windows (phone|ce)|blackberry"  
            +"|s(ymbian|eries60|amsung)|p(laybook|alm|rofile/midp"  
            +"|laystation portable)|nokia|fennec|htc[-_]"  
            +"|mobile|up.browser|[1-4][0-9]{2}x[1-4][0-9]{2})\b";  
    static String tableReg = "\b(ipad|tablet|(Nexus 7)|up.browser"  
            +"|[1-4][0-9]{2}x[1-4][0-9]{2})\b";  
    
    //移动设备正则匹配：手机端、平板
    static Pattern phonePat = Pattern.compile(phoneReg, Pattern.CASE_INSENSITIVE);  
    static Pattern tablePat = Pattern.compile(tableReg, Pattern.CASE_INSENSITIVE);  
      
    /**
     * 检测是否是移动设备访问
     * 
     * @Title: check
     * @Date
     * @param userAgent 浏览器标识
     * @return true:移动设备接入，false:pc端接入
     */
    public static boolean check(HttpServletRequest request){  
        String userAgent = request.getHeader( "USER-AGENT" );
        if(null == userAgent){  
            userAgent = "";  
        }  
        // 匹配  
        Matcher matcherPhone = phonePat.matcher(userAgent);  
        Matcher matcherTable = tablePat.matcher(userAgent);
        String domain = request.getServerName();
        boolean isFromMobile = false;
        if(matcherPhone.find() || matcherTable.find() || (domain!=null && domain.startsWith("m"))){  
            isFromMobile =  true;  
        }
        return isFromMobile;
    }

　　public static boolean isFromAndroid(HttpServletRequest request){
        String userAgent = request.getHeader( "USER-AGENT" );
        if(userAgent == null){
            userAgent = "";
        }
        return userAgent.indexOf("Android") > 0;
    }
}