判断终端类型

public static class CheckMobile {  
        
        // \b 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 : 2014-7-7 下午01:29:07 
         * @param userAgent 浏览器标识 
         * @return true:移动设备接入,false:pc端接入 
         */  
        public static boolean check(String userAgent){    
            if(null == userAgent){    
                userAgent = "";    
            }    
            // 匹配    
            Matcher matcherPhone = phonePat.matcher(userAgent);    
            Matcher matcherTable = tablePat.matcher(userAgent);    
            if(matcherPhone.find() || matcherTable.find()){    
                return true;    
            } else {    
                return false;    
            }    
        }  
    }
    
    /** 
     * 检查访问方式是否为移动端 
     *  
     * @Title: check 
     * @Date : 2014-7-7 下午03:55:19 
     * @param request 
     * @throws IOException  
     */  
    public boolean check(HttpServletRequest request) throws IOException{  
        boolean isFromMobile=false;  
          
        HttpSession session= request.getSession();
       //检查是否已经记录访问方式(移动端或pc端)  
        if(null==session.getAttribute("ua")){  
            try{  
                //获取ua,用来判断是否为移动端访问  
                String userAgent = request.getHeader( "USER-AGENT" ).toLowerCase();    
                if(null == userAgent){    
                    userAgent = "";    
                }  
                isFromMobile=CheckMobile.check(userAgent);  
                //判断是否为移动端访问  
                if(isFromMobile){  
                    logger.info("移动端访问");  
                    session.setAttribute("ua","mobile");  
                } else {  
                	logger.info("pc端访问");  
                    session.setAttribute("ua","pc");
                }  
            }catch(Exception e){}  
        }else{  
            isFromMobile=session.getAttribute("ua").equals("mobile");  
        }  
          
        return isFromMobile;  
    } 

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转载自learnmore.iteye.com/blog/2323093