I’ve followed the Getting Started tutorial on spring.io for building REEST services https://spring.io/guides/gs/rest-service/. The problem is that this tutorial only explain how to produce a standalone running jar with tomcat embedded using spring boot. Is there a way to create a project from scratch to…
Tag: spring
How to set a specific DataSource for a Repository?
Is it possible to assign a specific DataSource to a @Repository? I’d like to create a test environment where in general I want to use the test-datasource, but a few CrudRepository should operate on a different DB (the production DB; read-only operations). Can I tell spring which datasource to use for a …
How to integrate Spring Security with Spring Batch?
I want to create a secured web application where users can launch Spring Batch jobs. I want to keep track about who launched which job and thus I have to associate a JobInstance (or a JobExecution?) with a user. I additionally want to query for JobExecutions that were started by a particular user. This does n…
How to understand Spring @ComponentScan
I’m following a tutorial about Spring MVC and I cannot understand something about the @ComponentScan annotation even after reading the spring API doc, so here is the sample code: Configuring View Controllers Annotation-based Controllers My question is, for View Controllers, by adding @Configuration and …
Spring JPA no transaction is in progress
I am new to Spring and JPA, wasted 5 days and no result with searching internet. I want to save object to SQL SERVER, connection is correct but when I write .flush() I get the exception nested exception is javax.persistence.TransactionRequiredException: no transaction is in progress This is my jpaContext.xml …
How to inject multiple JPA EntityManager (persistence units) when using Spring
I need to use one database for queries (non-modifying) and one for commands (modifying). I am using Spring Data JPA, so I have two configuration classes: In my repository I sometimes need to decide with EntityManager to use like so: I am using persistence unit’s name as defined in my persistence.xml: Sp…
How to autowire properties bean from Condition
Does have anyone way to autowire bean in Condition? There is an next example. We have 2 implementation of FileManager. One of implementation should be initialize in depends on property ‘platform’. Properties handles via Archaius. . . . This code doesn’t work. Main reason is because ArchaiusP…
Spring Boot ConflictingBeanDefinitionException: Annotation-specified bean name for @Controller class
I keep getting the ConflictingBeanDefinitionException error in my Spring boot application. I am not entirely sure as to how to address it, I have several @Configuration annotated classes helping to set up Thymeleaf, Spring Security and Web. Why is the application trying to setup the homeController twice? (and…
“Could not find acceptable representation” using spring-boot-starter-web
I am trying to use spring-boot-starter-web to create a rest service serving up JSON representations of Java objects. From what I understand this boot-starter-web jar is supposed to handle the conversion to JSON through Jackson automatically but I am instead getting this error. My Controller is this… My …
How to fill HashMap from java property file with Spring @Value
Is it possible to use Spring @Value, to map values from properties file to the HashMap. Currently I have something like this, and mapping one value is not a problem. But I need to map custom values in HashMap expirations. Is something like this possible? Property file: ‘my_service.properties’ Is i…