AD登录过滤特殊字符，防止LDAP注入（代码库）

private static final char[] LDAP_FILTER_ESCAPE_SEQUENCE = new char[]{'\', '*', '(', ')', '', '/'};
private static final String[] LDAP_FILTER_ESCAPE_SEQUENCE_CHARACTER = new String[]{"\5c", "\2a", "\28", "\29", "\00", "\2f"};

public static String replaceFilter(String userInput) {
    if (com.yonyou.yht.sdkutils.StringUtils.isBlank(userInput)) {
        return userInput;
    }

    String tmp = userInput;
    for (int charIndex = 0; charIndex < LDAP_FILTER_ESCAPE_SEQUENCE.length; ++charIndex) {
        int index = tmp.indexOf(LDAP_FILTER_ESCAPE_SEQUENCE[charIndex]);
        if (index != -1) {
            tmp = tmp.replace(String.valueOf(LDAP_FILTER_ESCAPE_SEQUENCE[charIndex]), LDAP_FILTER_ESCAPE_SEQUENCE_CHARACTER[charIndex]);
        }
    }
    return tmp;
}

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