验证用户名，支持中英文（包括全角字符）、数字、下划线和减号 （全角及汉字算两位）,长度为4-20位,中文按二位计数

public class UserVerifyUtil {

/**
 * 验证用户名，支持中英文（包括全角字符）、数字、下划线和减号 （全角及汉字算两位）,长度为4-20位,中文按二位计数
 *
 * @param userName
 * @return
 * @author www.sangedabuliu.com
 */
public static boolean UserCountUtil(String userName) {
    String validateStr = "^[\\w\\-－＿[０-９]\u4e00-\u9fa5\uFF21-\uFF3A\uFF41-\uFF5A]+$";
    boolean rs = false;
    rs = matcher(validateStr, userName);
    if (rs) {
        int strLenth = getStrLength(userName);
        if (strLenth < 4 || strLenth > 20) {
            rs = false;
        }
    }
    return rs;
}

private static boolean matcher(String reg, String string) {
    boolean tem = false;
    Pattern pattern = Pattern.compile(reg);
    Matcher matcher = pattern.matcher(string);
    tem = matcher.matches();
    return tem;
}

/**
 * 获取字符串的长度，对双字符（包括汉字）按两位计数
 *
 * @param value
 * @return
 */
public static int getStrLength(String value) {
    int valueLength = 0;
    String chinese = "[\u0391-\uFFE5]";
    for (int i = 0; i < value.length(); i++) {
        String temp = value.substring(i, i + 1);
        if (temp.matches(chinese)) {
            valueLength += 2;
        } else {
            valueLength += 1;
        }
    }
    return valueLength;
}

/**
 * 是否是手机号
 *
 * @param phone
 * @return
 */
public static boolean isPhone(String phone) {
    if (StringUtil.isBlank(phone)) {
        return false;
    }
    String regex = "^1\\d{10}$";
    if (phone.length() == 11) {
        Pattern p = Pattern.compile(regex);
        Matcher m = p.matcher(phone);
        return m.matches();
    }
    return false;
}

}