Lerne die Grundlagen des Transaktionsmanagements in modernen Datenbanken kennen, und erfahre, wie du mit Spring Boot, Spring Data, JPA und Hibernate effektiv arbeitest. In diesem Tutorial starten wir mit den Grundlagen der Datenbanktransaktionen in deiner Anwendung: – Transaktionen starten: Dieses Video ist perfekt für Entwickler, die ihre Fähigkeiten in Spring Framework erweitern und transaktionssichere Anwendungen…
What is needed Setup an Azure AAD Application First we need an Azure AAD application which gives us the access to our AD users. The important part are the client id and the tenant id here: Add the web URIs which are allowed to use the OAuth2 login In the next step we have to…
Um weiterführende Konzepte besser nachvollziehen zu können, wollen wir uns in den Grundlagen Datenbanken mit Spring Boot, Isolation Level (Isolationsgrad) und Locks beschäftigen.
Problem As soon we have timers in our project they may cause issues in our integration tests, as they start running in the most undesirable situation. E.g. during the trigger a specific function which would usually be triggered by the timer. Solution In the easiest scenario if it is a in memory Spring test we…
Problem Often we write JPA Entity classes an have to ensure in a larger team that refactoring doesn’t create performance problems or logical errors in the entity model usual problems are: In your test
Problem Define a pointcut for annotated methods. The most example are based only on @within or @annotation which has the downside that the aspect is added to all methods and the check of the annotation is executed during runtime. Solution Git Repository https://github.com/sterlp/training/tree/master/aspect Links https://www.eclipse.org/aspectj/doc/released/progguide/semantics-pointcuts.html https://docs.spring.io/spring-framework/docs/5.3.x/reference/html/core.html#aop-pointcuts-designators
Problem Some services don’t have an UI and the OpenAPI/ Swagger UI should be used as default UI of the service. As so the root should be redirected directly to the SwaggerUI. Solution Just add a WebMvc redirect. Swagger Open API dependencies Spring Boot 2.x Ensure you check the current version: Spring Boot 3.x Ensure…
Problem In some projects we still may need to manually to reconnect to our JMS provider. For what ever reason the framework or the container cannot do the job for us. As so we have to ensure that an once registered JMS listener re-register itself if something bad happens. Note: Check first if your container…
Problem By default, the JSR 303 Bean validation doesn’t work together with Spring Boot Data REST HATEOAS. Even worse we are confronted with 500 errors like In our Solutions Imagin in the description that we have a bean-like this and of course a Spring Data repository: Link to the full source code. Solution 1: custom…
Problem By default the Spring RestTempalte and the swagger OpenAPI client does an SSL check. This is usually not required on the test system, as so the goal is to remove the SSL check from the Spring Boot Rest Template. RestTemplate Apache HTTP Client pom.xml Swagger OpenAPI Client Furthermore sometimes it is required to remove…