How can I insert a single document in elasticsearch using scala?

See more:

Elasticsearch

Scala

Here is the code of Indexing a single Document User(uid, firstName, lastName, email, address, phoneNumber) into index(firstindex), but actually the problem is that the index created successfully but document not inserted:

val user = User("1","abc", "def", "abc123@gmail.com", "ab", 1234)

val indexReqBuilder= new IndexRequest.Builder[User]
indexReqBuilder.index("firstindex")
indexReqBuilder.document(user)
indexReqBuilder.id(user.Uid)

What I have tried:

Here is the code of making client:

val restClient: RestClient = RestClient.builder(
new HttpHost("localhost", 9200)).build();
val transport: ElasticsearchTransport = new RestClientTransport(restClient, new JacksonJsonpMapper)

val esAsyncClient: ElasticsearchAsyncClient = new ElasticsearchAsyncClient(transport)

Here is the code of creating Index (firstindex)


val createResponse = esAsyncClient.indices().create(
new CreateIndexRequest.Builder()
.index("firstindex")
.build()
)