身份证号码做掩码

/**
 * 对身份证号码做掩码
 * @param idCarNo
 * @return
 */
public static String strIDCardNoMask(String idCarNo){
    StringBuffer buffer = new StringBuffer();
    return buffer.append(idCarNo.substring(0,6)).append("***********").append(idCarNo.substring(17)).toString();
}