Java判断PC端还是移动端

package com.*.*.*;

import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* 检测是否为移动端设备访问
*/
public class IsModel {
// \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
* @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
* @param request
* @throws IOException
*/
public static boolean check(HttpServletRequest request,
HttpServletResponse response) throws IOException {
boolean isFromMobile = false;
// 检查是否已经记录访问方式（移动端或pc端）
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 = IsModel.check(userAgent);
// 判断是否为移动端访问
if (isFromMobile) {
System.out.println("移动端访问");
return isFromMobile;
} else {
System.out.println("pc端访问");
return isFromMobile;
}
} catch (Exception e) {
e.printStackTrace();
}
return isFromMobile;
}
}