	public class Response {

	private String code;
	private Map<String, Object> data;
	private Long timestamp;
	private String checksum;

	public Response(String code, Map<String, Object> data, Long timestamp, String checksum) {
	this.code = code;
	this.data = data;

Jian-Min-Huang / Response.kt

Last active May 19, 2021 09:29

	data class Response(

	var code: String,
	var data: Map<String, Any>,
	var timestamp: Long,
	var checksum: String
	)

	fun main() {
	val response = Response("T001", mapOf("a" to 100), Date().time, "317d069fe45debda190c3f5822f16484")

Jian-Min-Huang / Response.java

Created May 19, 2021 09:15

	@Data
	@AllArgsConstructor
	public class Response {

	private String code;
	private Map<String, Object> data;
	private Long timestamp;
	private String checksum;
	}

Jian-Min-Huang / MD5.kt

Created May 20, 2021 04:21

	fun String.md5() =
	MessageDigest.getInstance("MD5")
	.also {
	it.update(this.toByteArray(StandardCharsets.UTF_8))
	}.run {
	this.digest().toHexString()
	}

	println("abc".md5())

Jian-Min-Huang / AesDecrypt.kt

Created May 20, 2021 04:44

	fun String.aesDecrypt(transformation: String = "AES/CBC/PKCS7PADDING", key: String, iv: String) =
	also {
	Security.addProvider(BouncyCastleProvider())
	}.let {
	Cipher.getInstance(transformation)
	}.also {
	it.init(
	Cipher.DECRYPT_MODE,
	SecretKeySpec(key.toByteArray(StandardCharsets.UTF_8), "AES"),
	IvParameterSpec(iv.toByteArray(StandardCharsets.UTF_8))

Jian-Min-Huang / AesDecrypt.java

Created May 20, 2021 05:08

	String aesDecrypt(String cipherText, String key, String iv) {
	Security.addProvider(new BouncyCastleProvider());

	Cipher cipher = Cipher.getInstance(transformation);
	cipher.init(Cipher.DECRYPT_MODE,
	new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES"),
	new IvParameterSpec(iv.getBytes(StandardCharsets.UTF_8)));

	return new String(cipher.doFinal(hexString2ByteArray(cipherText)));
	}

Jian-Min-Huang / Blocking-Call.kt

Last active May 22, 2021 05:19

	fun blockingMvc() =
	run {
	// action 1, cost 100ms
	val delay100res = getBlockingResponse(100)!!["totalTimeMillis"].parseLong()
	// action 2, cost 200ms
	val delay200res = getBlockingResponse(200)!!["totalTimeMillis"].parseLong()

	// action 3, need return value from action 1 and 2, cost 300ms
	val delay300req = getBlockingResponse(delay100res + delay200res)!!["totalTimeMillis"].parseLong()