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SPRING-BOOT QUESTIONS

Spring boot syntax on run()
Spring boot syntax on run()
wish help you to fix your issue It is not mandatory to create the main method inside the @SpringBootApplication class. So by providing the class argument in the SpringApplication.run method one can specify the class that should be loaded.For example:
TAG : spring-boot
Date : November 12 2020, 07:00 PM , By : AWK
DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler
DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler
wish help you to fix your issue I am trying to design a rest api, and below is my controller code. , For clarity, fix is:
TAG : spring-boot
Date : November 05 2020, 07:01 PM , By : Ghazi
Wrapping Resilience4j circuitbreaker around a service method with multiple arguments
Wrapping Resilience4j circuitbreaker around a service method with multiple arguments
fixed the issue. Will look into that further Resilience4j-circuitbreaker allows us to wrap a service using decorator functions, but from what I can tell it only allows functional interfaces such as Supplier, Consumer, and Function which accept at mos
TAG : spring-boot
Date : October 16 2020, 06:10 AM , By : user6021885
Is there a way to record response times of feign client
Is there a way to record response times of feign client
this will help We have straight forward as well as a customized way for logging the feign clients request and response (including the response time). We have to inject the feign.Logger.Level bean, that's it. THE DEFAULT/ STRAIGHT FORWARD WAY
TAG : spring-boot
Date : October 15 2020, 06:10 PM , By : A.Bralin
ResourceAssembler not returning the right path(created resource path) in response _links
ResourceAssembler not returning the right path(created resource path) in response _links
Hope this helps In the resource processor, you are setting the self link to the URL for UserJob (/profiles which you have set in your controller) and concatenating the id, so it becomes "/profiles/id". If you need to set a link to the URL of a method
TAG : spring-boot
Date : October 14 2020, 02:00 PM , By : lukas
How to create routes configuration itself dynamically
How to create routes configuration itself dynamically
may help you . Camel supports defining all details about routes in a particular XML-based format. This page has links to that (and other) DSLs.You could definitely come up with your own DSL and build routes dynamically, but that's a lot of work if yo
TAG : spring-boot
Date : October 14 2020, 04:00 AM , By : O. Zelentsov
Transaction Synchronization in spring boot with Database+ kafka example
Transaction Synchronization in spring boot with Database+ kafka example
I wish did fix the issue. I Want to write one new application with Spring boot using the database as MySQL + Mango and for messaging Spring Kafka. , Here you go...
TAG : spring-boot
Date : October 14 2020, 04:00 AM , By : Hasnat Khan
H2 Database not found error: 90146. H2 database is not created on start
H2 Database not found error: 90146. H2 database is not created on start
I hope this helps . I had the same error and I found these to be helpful: Adding a pre-2019 version to the pom.xml file as below:
TAG : spring-boot
Date : October 13 2020, 10:00 PM , By : Albert Pucio
IntelliJ IDEA CE 2019.1: "JUnit Vintage" test section throwing "No runnable methods" when using `@Ru
IntelliJ IDEA CE 2019.1: "JUnit Vintage" test section throwing "No runnable methods" when using `@Ru
hope this fix your issue When I replace that annotation with (as shown in this [Baeldung article][1]):
TAG : spring-boot
Date : October 13 2020, 04:00 PM , By : Ivo Peirano
Spring Boot @DataJpaTest causing `No ServletContext set` error
Spring Boot @DataJpaTest causing `No ServletContext set` error
hop of those help? When running a test with the @DataJpaTest annotation, this exception is thrown: , For loading webapplication context use the annotations :
TAG : spring-boot
Date : October 13 2020, 04:00 PM , By : Manas Deka
Can I use "Spring Data JDBC" with Spring Boot 1.5.x?
Can I use "Spring Data JDBC" with Spring Boot 1.5.x?
fixed the issue. Will look into that further If you look at the spring-data-jdbc pom.xml it uses spring-data-parent to manage Spring Framework version by defining and applying spring.version property. You must ensure that this Spring Framework versio
TAG : spring-boot
Date : October 13 2020, 09:00 AM , By : Tal Malka
Spring boot tests in memory db data not persisting between tests
Spring boot tests in memory db data not persisting between tests
To fix the issue you can do Tests annotated with @DataJpaTest are already @Transactional so adding @Transactional explicitly will, as you have observed, have no effect.The behaviour that you are seeing is because, by default, the test framework rolls
TAG : spring-boot
Date : October 13 2020, 07:00 AM , By : user6025782
Spring boot run ends successfully but embedded server is down
Spring boot run ends successfully but embedded server is down
fixed the issue. Will look into that further If you want to run your application from the command line using Maven you should use spring-boot:run rather than spring-boot:start.mvn spring-boot:start is intended for use with integration tests and Fails
TAG : spring-boot
Date : October 12 2020, 08:00 PM , By : Yvo Flavio Silva Lim
Why first line in pom.xml in spring-boot Application showing error... <?xml version="1.0" encoding="UT
Why first line in pom.xml in spring-boot Application showing error... <?xml version="1.0" encoding="UT
I wish this helpful for you This happening with 2.1.5.RELEASE. Add the following entry to your pom to fix that issue.
TAG : spring-boot
Date : October 12 2020, 07:00 PM , By : jomeo Pardillo
Is @Import necessary with Spring Boot
Is @Import necessary with Spring Boot
wish helps you You don’t need to do that, scanning will be done for you automatically , all you need is to make your main class on the root package, and all other stereotypes classes including configuration in sub packages
TAG : spring-boot
Date : October 12 2020, 04:00 PM , By : chirag panchal
Use method security springboot
Use method security springboot
help you fix your problem Sure. Just annotate @EnableGlobalMethodSecurity on any @Configuration bean. A good one is to annotate on the configuration bean that configures security :
TAG : spring-boot
Date : October 12 2020, 01:00 PM , By : Marliani Rara
Maven POM.xml problem - Unknown error at top line ( <?xml version="1.0" encoding="UTF-8"?> )
Maven POM.xml problem - Unknown error at top line ( <?xml version="1.0" encoding="UTF-8"?> )
Any of those help This is the latest surprise Eclipse bug when using with Spring Boot 2.1.5 due to Spring Boot 2.1.5 upgrade maven-jar-plugin to 3.1.2The workaround is to downgrade it to the previous version by adding the following to pom.xml :
TAG : spring-boot
Date : October 12 2020, 07:00 AM , By : Abhishek
How to make multiple Spring Webclient calls in parallel and wait for the result?
How to make multiple Spring Webclient calls in parallel and wait for the result?
wish help you to fix your issue I am new to Reactive programming and I would like to make two API calls in parallel and process the results and return a simple array or list of items. , Here is a use case for a parallel call.
TAG : spring-boot
Date : October 12 2020, 05:00 AM , By : polyhedron
Disable distributed tracing for development
Disable distributed tracing for development
I wish did fix the issue. You can add the following setting on your properties key to disable zipkin, source.
TAG : spring-boot
Date : October 11 2020, 08:00 PM , By : nikhil singh
Spring boot WAR in tomcat - externalize the application.properties
Spring boot WAR in tomcat - externalize the application.properties
I hope this helps you . The documentation has several important notes:
TAG : spring-boot
Date : October 11 2020, 06:00 PM , By : Francisco Thibério
Spring Data + SQL Server remove schema name from entity class
Spring Data + SQL Server remove schema name from entity class
around this issue Is there anyway to remove schema from class annotation and put it in application.properties file so that if for different environment there is different schema I can control from properties file. , You should specify shcema name in
TAG : spring-boot
Date : October 11 2020, 02:00 PM , By : Kez70
SpringBoot could not access ElasticSearch on kubernetes
SpringBoot could not access ElasticSearch on kubernetes
wish helps you Problem solved. I wrote it at this link.Deploy SpringBootApplication and ElasticSearch on Kubernetes
TAG : spring-boot
Date : October 11 2020, 12:00 PM , By : Brent
How to schedule @RabbitListener
How to schedule @RabbitListener
Any of those help I see a few optionsKeep your application started just when consumption is required
TAG : spring-boot
Date : October 11 2020, 11:00 AM , By : Jignesh Vyas
How can I use Spring Data ElasticSearch?
How can I use Spring Data ElasticSearch?
it helps some times Unfortunately, spring data elasticsearch does not support version 7.1.0 yet. See versions section in this link:https://github.com/spring-projects/spring-data-elasticsearch
TAG : spring-boot
Date : October 11 2020, 10:00 AM , By : Paulo Leite
How to get specific headers (spring-boot application) and pass to controller?
How to get specific headers (spring-boot application) and pass to controller?
it helps some times , First you need below dependency,
TAG : spring-boot
Date : October 11 2020, 08:00 AM , By : Matt. H
how destroy jwt token from spring boot backend
how destroy jwt token from spring boot backend
this one helps. Technically, as your application is stateless, your Spring Boot app won't know when your client logout cause it never keep track of all the tokens it has issued/generated. (That's why it's called stateless :D) The best practice here i
TAG : spring-boot
Date : October 11 2020, 02:00 AM , By : WRW
@SpringBootTest vs @ContextConfiguration vs @Import in Spring Boot Unit Test
@SpringBootTest vs @ContextConfiguration vs @Import in Spring Boot Unit Test
I wish did fix the issue. I think all 3 presented options are bad if your intent is to run a proper unit test. A unit test must be blazing fast, you should be able to run hundreds of those in a second or so (depending on the hardware of course, but y
TAG : spring-boot
Date : October 10 2020, 01:00 PM , By : Jordan Maslyn
Event Driven Architecture on Multi-instance services
Event Driven Architecture on Multi-instance services
help you fix your problem I think it depends on how you work with Rabbit MQ.You can configure the rabbit mq with one queue for these events and make spring boot applications that represent the sending servers to be "Competing" Consumers.
TAG : spring-boot
Date : October 10 2020, 09:00 AM , By : György Abonyi
Problems using Springboot autoconfiguration to connect to SQL-Server in a FUSE EAP environment
Problems using Springboot autoconfiguration to connect to SQL-Server in a FUSE EAP environment
around this issue There is no support for Spring Boot with Fuse EAP and the Camel subsystem. Hence why you do not see any org.springframework.boot dependencies in the Fuse module layer.If you are going to deploy Camel Spring Boot applications into EA
TAG : spring-boot
Date : October 10 2020, 06:00 AM , By : Xeremo
How to set default locale for Vaadin Flow (13/14) to German
How to set default locale for Vaadin Flow (13/14) to German
this one helps. the magic is done with the I18NProvider. You should implement this interface and activate it. In a component get the translations with getTranslation(..). For detailed examples read the i18n tutorial : https://vaadin.com/tutorials/i18
TAG : spring-boot
Date : October 10 2020, 03:00 AM , By : Walter Castillo Llaq
How to debug Spring Security Oath2 and Jwt for knowing how it work
How to debug Spring Security Oath2 and Jwt for knowing how it work
may help you . If you want to debug /oauth/token which generates the Access Token and Refresh Token you need to add a break point in TokenEndpoint.postAccessToken or TokenEndpoint.getAccessToken method based on Request Method type. If you want to deb
TAG : spring-boot
Date : October 09 2020, 02:00 AM , By : Tom Martin
JPA separately to search for multiple words in one column
JPA separately to search for multiple words in one column
will help you Yes, you can achieve this by building a dynamic query using Criteria API.Your specification could look like:
TAG : spring-boot
Date : October 08 2020, 08:00 PM , By : Ana Cosma
Spring boot using log4j2 write log too slow
Spring boot using log4j2 write log too slow
it should still fix some issue But if I'm using Jmetter to send a lot of request (TOTAL: 7996, AVG: 98 message/s) I see that the logging is too slow, after stop sending requests about 1.5 minutes the logging is still continues and log files are still
TAG : spring-boot
Date : October 08 2020, 03:00 PM , By : Anon
connect Kafka aws instance from Java API
connect Kafka aws instance from Java API
should help you out java.io.IOException: Can't resolve address: ip-xxx-xx-xx-xx.ec2.internal:9092
TAG : spring-boot
Date : October 08 2020, 03:00 AM , By : Antony Chiha
Spring Data GemFire and loose coupling between GemFire cache with Spring Boot on startup
Spring Data GemFire and loose coupling between GemFire cache with Spring Boot on startup
This might help you What you are asking is possible to do, but not without some custom code.And, it would be much easier to accomplish using Java-based, Spring Container Configuration along with SDG's API than using either Spring (Data GemFire) XML c
TAG : spring-boot
Date : October 08 2020, 02:00 AM , By : Jesús Romero
How to automatically read/receive message from solace queue when application started?
How to automatically read/receive message from solace queue when application started?
I wish did fix the issue. So is there any method in solace which can open connection automatically if there is any message available in Queue/Topic
TAG : spring-boot
Date : October 08 2020, 01:00 AM , By : Myung Yun Kang
How to consume multiple kafka message at same topic with multiple ack?
How to consume multiple kafka message at same topic with multiple ack?
around this issue When using a batch listener, the entire batch is acked when Acknowledgment.acknowledge() is called.I would recommend using a single record listener rather than a batch listener for this use case.
TAG : spring-boot
Date : October 06 2020, 04:00 PM , By : Sudeep
Spring boot 2 and ReadinessProbe / LivenessProbe
Spring boot 2 and ReadinessProbe / LivenessProbe
wish help you to fix your issue Although I am replying a bit late. But I think my implementation will help people in future to implement kubernetes readiness / liveness probe for spring boot applications.Description of my docker image
TAG : spring-boot
Date : October 06 2020, 02:00 PM , By : Ricardo Souza
SLF4J: Failed toString() invocation on an object of type lombok
SLF4J: Failed toString() invocation on an object of type lombok
it should still fix some issue You have a bidirectional reference between Employee (via field departments) and Department (we cannot see which field because you omitted that, or your pasted code is wrong). Both generated toString() methods in these c
TAG : spring-boot
Date : October 06 2020, 11:00 AM , By : shital wagh
Send spring boot logs directly to logstash with no file
Send spring boot logs directly to logstash with no file
should help you out So, I'm building a full cloud solution using kubernetes and spring boot. , You can try to add logback.xml in resources folder :
TAG : spring-boot
Date : October 06 2020, 02:00 AM , By : candy
How to fix - Cannot load driver class: com.vertica.jdbc.Driver
How to fix - Cannot load driver class: com.vertica.jdbc.Driver
it helps some times I have not used this database driver, but I guess this is because there is no import the driver correctly.You can try to add this to the pom.xml, and reimport.
TAG : spring-boot
Date : October 05 2020, 07:00 PM , By : mrod2912
can spring auto reload changes like grails?
can spring auto reload changes like grails?
wish of those help If a class is changed , I am sorry that Spring boot devtools will not just reload that changed classes but it will restart the whole application automatically . But this restart should be faster than the normal cold start based on
TAG : spring-boot
Date : October 05 2020, 07:00 PM , By : Danielishko
why we should always return resource or DTO in Spring Rest for GET, PUT, POST?
why we should always return resource or DTO in Spring Rest for GET, PUT, POST?
wish help you to fix your issue Because it may contains additional (internal) properties that you don't want to expose to the client. Separating it into two types avoids the concern of deciding which properties to serialize and which not. It also mea
TAG : spring-boot
Date : October 05 2020, 09:00 AM , By : Bryce McCall
How to do health check of a spring boot applications which is running in docker container
How to do health check of a spring boot applications which is running in docker container
seems to work fine If you want to use the spring boot actuator/health as a docker healthcheck, you have to add it like this on your docker-compose file:
TAG : spring-boot
Date : October 05 2020, 08:00 AM , By : KB2228
Dealing with parallel flux in Reactor
Dealing with parallel flux in Reactor
this will help There's three possible ways I generally use to achieve this: Use the 3 argument version of flatMap(), the second of which is a mapperOnError -eg. .flatMap(request -> someRemoteCall(), x->Mono.empty(), null); Use onErrorResume(x -> Mono
TAG : spring-boot
Date : October 05 2020, 05:00 AM , By : patternedpony
How to generate frontend code for an existing app using JHipster?
How to generate frontend code for an existing app using JHipster?
help you fix your problem JHipster has no support for generating code on top of existing databases. So, you would probably have to write manually JDL for your existing entities, it can be very difficult or impossible depending on the conventions you
TAG : spring-boot
Date : October 05 2020, 04:00 AM , By : AML
How to create an Open API 3.0.1 Specification
How to create an Open API 3.0.1 Specification
this one helps. You can look at SpringDoc https://github.com/springdoc/springdoc-openapiIt will generate the documentation on the fly for for you.
TAG : spring-boot
Date : October 04 2020, 10:00 PM , By : hut_tum
Flyway not finding migrations when run from IntelliJ when using Gradle
Flyway not finding migrations when run from IntelliJ when using Gradle
this will help Perfectly work on my machineProbably migrations not copied to build/resources/main/db directory
TAG : spring-boot
Date : October 04 2020, 04:00 PM , By : walkingryan
SMS based OTP in keycloak is possible?
SMS based OTP in keycloak is possible?
This might help you It is possible through extending Authentication mechanism, check Authentication SPI documentationTake a look at existing solution: https://github.com/nickpack/keycloak-sms-authenticator-sns Even if it doesn't suite your needs you
TAG : spring-boot
Date : October 04 2020, 07:00 AM , By : Radu Popescu
Kotlin best way to log using slf4j
Kotlin best way to log using slf4j
will help you The point of the {} syntax supported by SLF4J is to avoid useless String concatenation and toString() calls if the log message is never actually generated (for example because the level is higher than info.A template string doesn't avoi
TAG : spring-boot
Date : October 03 2020, 11:00 PM , By : Timothy Goes to Scho
Springboot with undertow becomes unresponsive when worker thread pool grows too large
Springboot with undertow becomes unresponsive when worker thread pool grows too large
I wish did fix the issue. I am not entirely sure if tweaking spring boot version / embedded web server will fix this, but below is how you can scale this up using Kubernetes / Istio . livenessProbe
TAG : spring-boot
Date : October 03 2020, 11:00 PM , By : rarestone
Spring Boot Rest Controller vs Camel rest dsl
Spring Boot Rest Controller vs Camel rest dsl
hop of those help? This is your call which should you want to implement, But as you are integrating camel in spring boot so you can take advantage of REST DSL camel components and bind that flow with other components of Apache Camel, it will reduce y
TAG : spring-boot
Date : October 03 2020, 09:00 PM , By : Marek Koszałka
@ControllerAdvice and @ExceptionHandler not getting triggered for my RestController
@ControllerAdvice and @ExceptionHandler not getting triggered for my RestController
it helps some times It should work. Some possible causes that make it fails may be :
TAG : spring-boot
Date : October 03 2020, 03:00 PM , By : Nadiir
SpringBoot with no netty_transport_native_epoll_x86_64 in java.library.path error
SpringBoot with no netty_transport_native_epoll_x86_64 in java.library.path error
will be helpful for those in need I think you should check the logs. Probably after that exception you will see some thing like:
TAG : spring-boot
Date : October 03 2020, 02:00 PM , By : Seva Feldman
Spring Boot password bcrypt encoder: encoded value doesn't match with the online generated one
Spring Boot password bcrypt encoder: encoded value doesn't match with the online generated one
it should still fix some issue How come using the same algorithm with the same input value and the same parameters, two implementations supposed to be equivalent provide different results ?
TAG : spring-boot
Date : October 03 2020, 01:00 PM , By : Colton Hill
Guava version 16.0 being used during runtime even though 18.0 is used during compile time
Guava version 16.0 being used during runtime even though 18.0 is used during compile time
I hope this helps you . It reminds me the class loading issue when I work with Glassfish4 long time ago. From the docs , the classes will first load from the following order before loading from the lib in the WAR :
TAG : spring-boot
Date : October 03 2020, 07:00 AM , By : sunyruru
How to get rid of Spring Neo4j startup warnings?
How to get rid of Spring Neo4j startup warnings?
help you fix your problem I ran into the same issue and after 2 days, I finally figured it out...My pom.xml looks like this:
TAG : spring-boot
Date : October 03 2020, 06:00 AM , By : Tohid Tas
Authentication and Authorization for API Gateway
Authentication and Authorization for API Gateway
Does that help You can refer this repo for most of your requirement. I have added security using Spring security. Zuul is used for gateway service. Project also include Eureka for service discovery. Implementing Caching should be fairly simple with t
TAG : spring-boot
Date : October 02 2020, 11:00 PM , By : bob
Unable to build spring based project for authentication using keycloak
Unable to build spring based project for authentication using keycloak
will help you I got same issue using springboot-2.2.0/keycloak-7.0.1. I moved the bean KeycloakSpringBootConfigResolver to another configuration file and it works.
TAG : spring-boot
Date : October 02 2020, 12:00 PM , By : Kiurlo di Mare
Running spring boot with multiple main classes
Running spring boot with multiple main classes
it helps some times Spring Boot gives several ways: specify main class as system property:
TAG : spring-boot
Date : October 02 2020, 11:00 AM , By : Julien Herpin

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