后端判断网络请求是移动端还是pc端

如题，判断请求Request是移动端访问还是PC端访问，贴代码

import javax.servlet.http.HttpServletRequest;

public class CommonUtil {

	public void index(HttpServletRequest request) {
		String ua = request.getHeader("User-Agent");
		if (CommonUtil.checkAgentIsMobile(ua)) {
			System.out.println("移动端");
		} else {
			System.out.println("PC端");
		}
	}

	/**
	 * 判断User-Agent 是不是来自于手机
	 * @param ua
	 * @author Leemeea
	 * @return
	 */
	public static boolean checkAgentIsMobile(String ua) {
		String[] deviceArray = new String[] { "android", "iPhone", "ipod",
				"ipad", "blackberry", "ucweb", "windows phone" };
		if (ua == null) {
			return false;
		}
		ua = ua.toLowerCase();
		for (String string : deviceArray) {
			if (ua.indexOf(string) > 0) {
				return true;
			}
		}
		return false;
	}
}