Ftyjtk

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.