Exposed Kotlin. Problem with cyrillic encoding - kotlin

Question

I tryed to fix a problem with encodings. So, I sent from 'Postman', from web browser request to server, where I search data in database by keys in request. Request can be like this:
http://localhost:8080/books.getBooksByGenre/Документальное/0/10
(in browser).
Server receive string, like
http://localhost:8080/books.getBooksByGenre/%D0%94%D0%BE%D0%BA%D1%83%D0%BC%D0%B5%D0%BD%D1%82%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B5/0/10
then, takes params from url:
genreName: 'Документальное'
start: 0
count: 10.
Then, this data sends to dao:
override fun findGenreByName(genreName: String): DatabaseGenre {
return transaction(db) { getGenreByName(genreName) }
}
private fun getGenreByName(genreName: String): DatabaseGenre {
return try {
val foundGenre = GenreEntity.find { Genres.genre eq genreName }.single()
DatabaseGenre(foundGenre.id.value, foundGenre.genre, foundGenre.link)
} catch (e: Exception) {
throw NothingFoundInDatabaseException("no one genre found by '$genreName'")
} catch (e: NoSuchElementException) {
val m = "Duplicates of genre with name '$genreName'"
throw DuplicatedDataInDatabaseException(m)
}
}
In log I see, that sql-query for finding genres is correct, but I receive an exception:
java.util.NoSuchElementException: Collection is empty.
The sql-query, as I said, is correct:
SELECT genres.id, genres.genre, genres.link FROM genres WHERE genres.genre = 'Документальное'
Structure of genres table:
genres
id: int(10)
genre: varchar(100)
link: varchar(100
I tryied, to select all genres, and this query executed almost correctly. So, I decided, to check this query with english word, and this query correctly executed:
SELECT genres.id, genres.genre, genres.link FROM genres WHERE genres.genre = 'simpleGenre'
I have not exceptions with this query.
So, what I've done wrong and how to fix problem with collations?
UPD:
As I said at github (issue), I've tryied this query it mysql cli and I receive correct answer.
Also, I've tryed to decode url params (with java URLDecoder class). It doesn't helps too.

Answer 1

Thanks, #madhead.
I tryied an advance of #madhead, and it works. So, from this time my DB connection URL looks like this:
val connect = Database.connect(
url = "jdbc:mysql://localhost:3306/my_database_name?characterEncoding=utf8&useUnicode=true",
driver = "com.mysql.jdbc.Driver",
user = user_name,
password = password
)