public class ValidateUtil {
	/**
	 * 1.不能为空
       2.长度8-18
       3.不能为用户名不能为汉字、字母、数字、下划线以外字符！
	 * @param toMatcher
	 * @return 
	 */
	public static boolean checkUserNameOrPassword(String toMatcher){
		if(toMatcher == null || toMatcher.trim().length() == 0) 
			return false ;
		String regex = "^[a-zA-Z0-9_\u4e00-\u9fa5]{8,18}"  ;
		Pattern pattern = Pattern.compile(regex) ;
		Matcher matcher = pattern.matcher(toMatcher) ;
		return  matcher.matches() ;
	}

}