Hi all, I can't seem to wrap my head around getting Springdoc to work with my Kotlin Spring Boot app that uses the function DSL to register beans and routes. (There are no Bean, Service, etc annotations) Does anyone have an example on how to get this to work? I have tried putting the RouterOperation annotation on the handler methods, but the swagger ui still comes up empty.

Hi guys. I'm using JPA(Hibernate), but doesn't work auto-complete in the repository class. It works fine in java, but not kotlin. i don't know why doesn't work in kotlin-jpa The Intellij version you are using is 2020.1.2.

kotlin + spring + graalvm = ❤️ https://blog.frankel.ch/kick-spring-native-tires/

I have a scenario in which multiple users of the application will be simultaneously uploading excel sheet(small to huge) to the spring boot backend. After uploading that excel sheet, I have to process it for validations using POI for that which is fine and then store the whole excel sheet data in a database. What libraries or architecture should I choose? Is Spring data flow is the correct choice?! Or Uploading those files to Amazon S3 bucket and after uploading Queuing them in Amazon SQS and processing them in Spring MVC is sufficient for concurrent file uploads, processing and storing them in a DB without table inconsistency.

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I am getting this error while accessing Repository from other module, even i tried stackoverflow answer but it didnt workout, does anyone experience with error?

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'hanaServiceImpl': Unsatisfied dependency expressed through field 'userMappingRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMappingRepository' defined in net.broachcutter.repository.UserMappingRepository defined in @EnableJpaRepositories declared on DealerMainApplication: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: kotlin/reflect/full/KClasses

Can we use launch like this in Spring Webflux Controller

suspend fun test() : Response = coroutineScope {
    launch {
        doSomething()
    }

    Response(“pass”)
}

Will doSomething will keep on running in background once Response is returned. I have used async but not launch

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The fix for this appears to be marking the controller method as

open fun

instead of fun. As it is a leaf class, I don't understand why this would be so. Any ideas?

How do i override spring dependency in gradle (kotlin) file? I'm using spring boot version

2.4.4

which has

2.4.4

vesrion of

spring-boot-starter-data-redis

I want to use

2.4.7

version of it and tried following lines but it's not working

implementation("org.springframework.boot:spring-boot-starter-data-redis:2.4.7")

it says

Could not find org.springframework.boot:spring-boot-starter-data-redis:2.4.7.

Required by:

project :

I've also tried adding following line to build.gradle file with no luck

extra["spring-data-redis.version"] = "2.4.7"

I have been using suspend functions controller with Spring Boot, but seems that currently Spring Security does not support it with @PreAuthorize annotations. Anyone knows is this is going to be fixed anytime soon?

This is rather architectural question. I'm using postgresql as primary database and elastic search as search engine in spring boot. I'm only storing portion of data columns of postgres into elastic search. When user search for any data, I search in elastic search, get their id and retrieve data from postgres to send response. Am I doing anything wrong? Should I store all data in elastic search? If so, there will be overhead of updating data everytime when there's update in postgres.

Hi Guys, In Kotlin, is there a good reason I have to use immutable class for JPA entities? My colleague said he prefer to design like that and it is a good way to reduce some side-effects. However, I don’t believe it is a good way. I think JPA entities are born with a characteristic that its properties will be update one day. I read the persistence-with-jpa section in the spring boot kotlin tutorail and I show it to my colleague but he said he could not agree with it. What’s your opinion?

Good morning. Does anyone know which version of spring introduced the beans and routing kotlin DSLs ? https://docs.spring.io/spring-framework/docs/current/reference/html/languages.html#kotlin-web

By the way... what could be a good starting point for contributing to the bean/routing definition DSL?

Hi guys I'm  looking for a Remote job! I'm a backend Developer specialized in JAVA/SPRING-BOOT I live in Harare, Zimbabwe but would like to work remote. If you know of any opportunities, please link me Contact me on tapsshore@gmail.com  || +263771222822 skype: tapsshore

Can someone please help me with any blog post/paper/TT for the case against Annotations and why Spring-fu advocates file based config over Annotations?

Hi there, Bootify.io has now a Kotlin option to create a Spring Boot app with custom database, REST API and more. Hope it's useful! I haven't worked with Kotlin a lot in the past, so if you have a recommendation on what to improve, please let me know. :-)

Hi 🙂 I’m looking for some resources to learn Spring WebFlux with Kotlin Coroutines (I have experience with Spring WebFlux with Java and Reactor). Could you recommend something?

Hi, i’m using Spring Webflux and trying to add some logging around each response by using a ServerHttpResponseDecorator. The responses are coming back fine via postman, however I’ve noticed I can no longer load my swagger UI (just get a blank white screen). Anyone know why? Code in thread

Hi all cool dev ! i am new in spring boot, recently i come to sentry for crashlytics! i read the doc but is there any way to send crashlytics at once without writing in every catch block !

I'm using PostgreSQL and Spring data JPA to execute update as following

@Transactional
@Modifying(flushAutomatically = true, clearAutomatically = true)
@Query(
     "UPDATE posts SET comments_count = comments_count +1 WHERE post_id = :postId RETURNING comments_count",
      nativeQuery = true
)
fun incrementCommentCounter(@Param("postId") postId: Long): Int

As i'm using native query with 

RETURNING

 clause, it throws exception as

o.h.engine.jdbc.spi.SqlExceptionHelper   : A result was returned when none was expected.

How should i execute this query with spring boot?

Hi guys, I'm experimenting with the production ready parts of Kotlin DSL for Springboot. I'm obtaining great results, from a design perspective. Doing TDD is much more simples! But now I'm trying to introduce spring security, also with DSL (following this https://www.baeldung.com/kotlin/spring-security-dsl and this https://spring.io/blog/2020/03/04/spring-tips-kotlin-and-spring-security). When I introduce the

spring-boot-starter-security

then all the tests of the endpoints fail with 401. Do any of you knows which is the suggested approach to test DSL-defined endpoints when security is in place? Disabling security with annotations doesn't work, as also the tests doesn't use the usual @SpringBootTest annotation, but instead starts the application programmatically. I was searching for a command line argument that disables security, but without any luck :(

Hi @nfrankel and all devs can you tell me any good crashlytics for spring boot kotlin, i know sentry other than that will highly appreciated!

Anyone knows if it's possible to get auto-completion in Mustache templates to work in IntelliJ? I'm using the Spring Boot Starter Mustache with a very basic MVC setup, but it's basically guessing what's available by checking back and forth with the code. 😞

In the light of what this channel's discussions mostly been about the last few days (what should be discussed here and what shouyld not), what do you think of changing to a topic that makes it a bit more clear? Suggestion: "Discussions on Kotlin specific integration with Spring, not Spring in general. For Spring-generic questions, try Gitter: https://gitter.im/spring-projects/. Spring Boot Kotlin guides: https://spring.io/guides/tutorials/spring-boot-kotlin/"

Hello everyone! Can anybody suggest some good cloud hosting option for a Kotlin Spring project. I have currently hosted it on Heroku but the downside is that it sleeps after 30 mins of inactivity and takes time to start again(or sleeps permanently if my dyno hours are exhausted). Looking for option that is cheap(maybe has a free plan :p) and is up for most of the time

I’m using the kotlin-dsl and the buildSrc plugin and somehow my spring boot webapp ends up with

gradle-api-7.0.jar

in it’s classpath (and bundled in the bootJar)

What do folks use for a Kotlin type-safe SQL framework w/ Spring Boot and schema migration? I tried using JOOQ but hit issues w/ it not being compatible with Liquibase's YAML files and the Postgres JSONB data type. Thought about using SqlDelight but it doesn't have Liquibase's nice DB schema management for rollbacks. Exposed has an open issue on schema migration and sounds like it's still not quite ready for prime time. I'm using plain old JDBCTemplate which feels a bit retro because it's just a thin layer over prepared statements...though it is nice that it has @Transactional support in Spring 🙂