JavaWeb:後臺判斷是手機登陸還是Pc登陸

後臺java代碼：

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


/**
 * 查看是否爲手機登陸
 * 
 */
public class CheckMobile {
<span style="white-space:pre">	</span>// \b 是單詞邊界(連着的兩個(字母字符 與 非字母字符) 之間的邏輯上的間隔),
<span style="white-space:pre">	</span>// 字符串在編譯時會被轉碼一次,所以是 "\\b"
<span style="white-space:pre">	</span>// \B 是單詞內部邏輯間隔(連着的兩個字母字符之間的邏輯上的間隔)
<span style="white-space:pre">	</span>static String phoneReg = "\\b(ip(hone|od)|android|opera m(ob|in)i"
<span style="white-space:pre">			</span>+ "|windows (phone|ce)|blackberry"
<span style="white-space:pre">			</span>+ "|s(ymbian|eries60|amsung)|p(laybook|alm|rofile/midp"
<span style="white-space:pre">			</span>+ "|laystation portable)|nokia|fennec|htc[-_]"
<span style="white-space:pre">			</span>+ "|mobile|up.browser|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";
<span style="white-space:pre">	</span>static String tableReg = "\\b(ipad|tablet|(Nexus 7)|up.browser"
<span style="white-space:pre">			</span>+ "|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";


<span style="white-space:pre">	</span>// 移動設備正則匹配：手機端、平板
<span style="white-space:pre">	</span>static Pattern phonePat = Pattern.compile(phoneReg,
<span style="white-space:pre">			</span>Pattern.CASE_INSENSITIVE);
<span style="white-space:pre">	</span>static Pattern tablePat = Pattern.compile(tableReg,
<span style="white-space:pre">			</span>Pattern.CASE_INSENSITIVE);


<span style="white-space:pre">	</span>/**
<span style="white-space:pre">	</span> * 檢測是否是移動設備訪問
<span style="white-space:pre">	</span> * 
<span style="white-space:pre">	</span> * @Title: check
<span style="white-space:pre">	</span> * @Date : 2014-7-7 下午01:29:07
<span style="white-space:pre">	</span> * @param userAgent
<span style="white-space:pre">	</span> *            瀏覽器標識
<span style="white-space:pre">	</span> * @return true:移動設備接入，false: pc端接入
<span style="white-space:pre">	</span> */
<span style="white-space:pre">	</span>public static boolean check(String userAgent) {
<span style="white-space:pre">		</span>if (null == userAgent) {
<span style="white-space:pre">			</span>userAgent = "";
<span style="white-space:pre">		</span>}
<span style="white-space:pre">		</span>// 匹配
<span style="white-space:pre">		</span>Matcher matcherPhone = phonePat.matcher(userAgent);
<span style="white-space:pre">		</span>Matcher matcherTable = tablePat.matcher(userAgent);
<span style="white-space:pre">		</span>if (matcherPhone.find() || matcherTable.find()) {
<span style="white-space:pre">			</span>return true;
<span style="white-space:pre">		</span>} else {
<span style="white-space:pre">			</span>return false;
<span style="white-space:pre">		</span>}
<span style="white-space:pre">	</span>}


}

判斷應用：

/** 
 * 檢查訪問方式是否爲移動端 
 *  
 * @Title: check 
 * @Date : 2014-7-7 下午03:55:19 
 * @param request 
 * @throws IOException  
 */  
public boolean check(HttpServletRequest request,HttpServletResponse response) throws IOException{  
    boolean isFromMobile=false;  
      
    HttpSession session= request.getSession();  
   //檢查是否已經記錄訪問方式（移動端或pc端）  
    if(null==session.getAttribute("ua")){  
        try{  
            //獲取ua，用來判斷是否爲移動端訪問  
            String userAgent = request.getHeader( "USER-AGENT" ).toLowerCase();    
            if(null == userAgent){    
                userAgent = "";    
            }  
            isFromMobile=CheckMobile.check(userAgent);  
            //判斷是否爲移動端訪問  
            if(isFromMobile){  
                System.out.println("移動端訪問");  
                session.setAttribute("ua","mobile");  
            } else {  
                System.out.println("pc端訪問");  
                session.setAttribute("ua","pc");  
            }  
        }catch(Exception e){}  
    }else{  
        isFromMobile=session.getAttribute("ua").equals("mobile");  
    }  
      
    return isFromMobile;  
}