get String from InputStream

get String from InputStream

    @Throws(java.lang.Exception::class)
    fun convertStreamToString(input: InputStream?): String? {
        input ?: return null
        val reader = BufferedReader(InputStreamReader(input))
        val sb = StringBuilder()
        var line: String?
        while (reader.readLine().also { line = it } != null) {
            sb.append(line).append("\n")
        }
        reader.close()
        return sb.toString()
    }