Encoding as Base64 in Kotlin

 I share three examples Encoding as Base64 in Kotlin.

Example 1: from path.

import org.apache.commons.codec.binary.Base64
import org.apache.commons.io.FileUtils
import java.io.File
import java.nio.charset.StandardCharsets

fun main(args: Array<String>) {
    val file = File("PATH_YOUR_FILE")
    val encoded: ByteArray = Base64.encodeBase64(FileUtils.readFileToByteArray(file))
    println("*****************************start ****************")
    println(String(encoded, StandardCharsets.US_ASCII))
    println("*****************************end *****************")

}

Example 2:  from String

import org.apache.commons.codec.binary.Base64
import java.nio.charset.StandardCharsets

fun main(args: Array<String>) {
    val encoded = Base64.encodeBase64("Test".toByteArray())
    println("*****************************start ****************")
    println(String(encoded, StandardCharsets.US_ASCII))
    println("*****************************end *****************")
}

Example 3: from WS -> file: MultipartFile

import org.apache.commons.codec.binary.Base64
import org.springframework.web.multipart.MultipartFile
import java.nio.charset.StandardCharsets

fun encodeBase64(file: MultipartFile) {
    val encoded: ByteArray = Base64.encodeBase64(file.bytes)
    println("*****************************start ****************")
    println(String(encoded, StandardCharsets.US_ASCII))
    println("*****************************end *****************")
}