Java实现rtrim功能，批量删除字符串指定末尾的字符串

public static String removeEndLoop(String str, String remove) {
    if (StringUtils.isBlank(str) || StringUtils.isBlank(remove)) {
        return str;
    }
    if (!str.endsWith(remove)) {
        return str;
    }
    final StringBuilder sb = new StringBuilder(str);
    for (int lastIndex = sb.length(), removeLen = remove.length(); lastIndex >= 0; ) {
        lastIndex = str.lastIndexOf(remove, lastIndex - 1);
        /********************************************************************************
         * lastIndex == -1 目的是为了处理所有字符串都是都是与末尾的字符串一致时候除法
         * lastIndex != sb.length() - removeLen 为了防止当前删除字符串中间里面存在的末尾字符串
         ********************************************************************************/
        if (lastIndex == -1 || lastIndex != sb.length() - removeLen) {
            break;
        }
        sb.delete(lastIndex, sb.length());
    }

    return sb.toString();
}

public static void main(String[] args) {
    String str0 = "============";
    String str1 = "abcdefg=csfsg==efsdf===sdfs========";
    String str2 = "sdfsdfabcsdfsdfabcsdfsdabcabcabc";
    final String str0Result = removeEndLoop(str0, "=");
    log.info("str0原字符串为：{}", str0);
    log.info("得到的str0的最后结果为：{}", str0Result);
    log.info("==================================================");
    final String str1Result = removeEndLoop(str1, "=");
    log.info("str1原字符串为：{}", str1);
    log.info("得到的str1的最后结果为：{}", str1Result);
    log.info("==================================================");
    final String str2Result = removeEndLoop(str2, "abc");
    log.info("str2原字符串为：{}", str2);
    log.info("得到的str2的最后结果为：{}", str2Result);
    log.info("==================================================");
}