UriDecryptionFilter-3.kt

override fun run(): Any? {
    val ctx = RequestContext.getCurrentContext()
    val uri = ctx.request.requestURI

    val encrypted = encryptedStringRegex.find(uri)!!.value
    val decrypted = encrypted.reversed()
    val newUri = encryptedStringRegex.replace(uri, decrypted)

    val newRequest = object : HttpServletRequestWrapper(ctx.request) {
        override fun getRequestURI() = newUri
    }

    ctx.request = newRequest

    return null
}