How To Retrieve this list: When passing this list [id]: Answer I just figured out an answer for my question and it’s as follows: In the mongo repository just declare a custom find method: Then use it as a normal find method => [query] in your business logic layer and controller layer.
Tag: spring-boot
@Transactional – rollback on Exception not working
I am using aurora mysql for one of my project, wanted to rollback db update in update2 method in case of any exception. If I add transaction on update, getting this error Access denied for user ‘root’@’localhost’ (using password: NO). Without transactional annotation, I’m able to perform db operation, there is no issue with credentials. sudo code: Can someone suggest
How to map a table in Spring Data JPA that has 2 columns referencing the same table
I have a table that has 2 fields (pseudonymProfile and realProfile) that both join to the same table. When I try to do the mapping as shown below, I run into an error because the 2 fields use the same name (profile_id) in their @JoinColumn annotation. I’m under the impression that when defining a join column, I need to specify
How to deploy a Spring-Boot-Webflux application to Tomcat standalone server?
A normal spring-web application can be deployed to tomcat standalone as war file as follows: Question: how can I deploy such an application after migrating to spring-webflux to tomcat? Docs say: https://docs.spring.io/spring-framework/docs/current/reference/html/web-reactive.html#webflux-httphandler To deploy as a WAR to any Servlet 3.1+ container, you can extend and include AbstractReactiveWebInitializer in the WAR. That class wraps an HttpHandler with ServletHttpHandlerAdapter and registers
Converting java object to xml
How can i convert java object to xml? I am trying to convert an incoming java object to xml in spring integration with a converter bean. is there another way than marshalling in Jaxb ? like using @TypeConverter. Or implementing converter class. Answer I’m not familiar with @TypeConverter, but looks that that is an EclipseLink feature for JPA. In the
Java NullPointer Custom Validator javax.validation.ConstraintValidator
I have the following Validator that I use to validate an Update Request. object.getIdCreditor() has a value, but the execution of the findById method “creditorRepository.findById(object.getIdCreditor())” goes into NullPointer exception I don’t understand what’s wrong. Answer I solved it by adding:
value not injecting in @ReuqestBody POJO from application-dev.properties – SpringBoot Application
I am new to Java SpringBoot and I am trying to inject a default value from application-dev.properties file. Basically, the idea is to set default value to RequestObject’s id property, default value being injected(/fetched) from application-dev.properties. UseCase: In case, no data or blank data is being passed in request body of API, the code should set a default value (being
How can I collect a heap dump from Gradle tests in a Spring Boot Application?
I trying to diagnose a memory leak while running my integration tests in my Spring Boot App. When I am running : I keep getting OOM errors: But no heap dump in the specified directory. I have also tried adding the following to my gradle.properties: No change. What am I doing wrong ? How can I collect the heap dumps
How to avoid duplicate code in Java when you require the same class in two separated applications?
For the sake of simplicity, let’s say that I have a class named “Dog”. Then I have two separated applications containing implementations of that class. Application “A” does something with the Dog class. Application “B” does another something with the Dog class. Both applications require the Dog class, hence it would be duplicated. Now let’s say for a moment that:
Spring Security header are not reflecting in API response
I have added this class but still i am not getting any given above headers in API response. I also tried by adding @EnableWebSecurity on class where all the APIs are mentioned. Given Below is the image of headers in response. Please check. enter image description here Answer The possible reasons could be for the reported case are Spring security