I was reading regarding the @Matrixvariable annotation in Spring doc Spring Doc I have Understood this simple syntax // GET /pets/42;q=11;r=22 but having problem in understanding the below snippet What is this syntax @MatrixVariable(pathVar=”petId””) I haven’t understood the pathVar at…
Tag: spring
org.openqa.selenium.WebDriverException: Timed out waiting for driver server to start. Build info: version: ‘unknown’, revision: ‘unknown’
While everything works on my machine, when I bring the project in which I’m working on my server, Selenium and Chromedriver won’t boot, causing the following exception Everything works like this: the user, for launching the crawler, is supposed to click a button. Then, with JavaScript, I make an A…
Not able to add JPA dependency into spring-boot project
I am trying to add JPA Maven dependency to already created spring-boot project but I am getting following error: When I remove it the error is gone. pom.xml application.properties I tried to find answer online but none was solution for me. Also tried to create > Spring starter project > an there immedia…
MappingJackson2HttpMessageConverter configuration is not being recognized in spring boot 2
I am working with spring for a while already and in my spring boot 1.5x’s projects always dealing with the LazyInitializationException with the next configuration (more downstairs) but now I am creating a new project with spring boot 2 and the same configuration is not being recognized further than WebM…
Unknown data type when using an integer over NamedParameterJDBCTemplate on H2 [SPRING-BOOT]
I’m testing a Dao with an In-Memory DB with H2. I’m passing an int to the query with a map to execute it. This query is working OK on Oracle SQL, but is not succeding in H2. DAO QUERIES When I try to execute this query on H2, it returns: Error I tried to execute the query hardcoding the int
What is the purpose of the Hibernate ReturningWork interface?
I am working on one JAVA + Hibernate project but currently, I saw one interface in my code (i.e. ReturningWork<Long>) which has one method called execute(java.sql.Connection). My question is what is the use of this ReturningWork interface? Answer As I explained in more details on my blog, you can use th…
Is it possible to split request params in Spring controllers?
I have a request like: I would like to split those params to bind a List<String> sort in my controller or List<SortParam> where SortParam is the class with fields like: name (String) and ask (boolean). So the final controller would look like this: or Is there a way to make it? UPDATE: The standard…
How to download an excel file in Spring RestController
I am using Apache POI to generate .xlsx file. I would like to return that file from Spring controller. Here’s what I’ve done so far: Controller: Is it possible to return actual excel file from rest controller so user can download it to his computer ? As for now controller returning byte[] but I wo…
Failed to start bean ‘subProtocolWebSocketHandler’; nested exception is java.lang.IllegalArgumentException: No handlers
Answer Hm. Looks like you don’t register any endpoints via a WebSocketMessageBrokerConfigurer implementation and overriding its registerStompEndpoints(StompEndpointRegistry registry). Exactly this is a place where StompSubProtocolHandler is added to that SubProtocolWebSocketHandler:
Minimum Spring version compatible with Java 11
I need to upgrade an app to Java 11 very soon, I was wondering what’s the minimum Spring version that is compatible with Java 11. I’m currently using Java 8 and Spring 4.2.7. Answer From their task tracker — SPR-16391:Compatibility with JDK 11. The compatibility of JDK 10, 11 is planned alon…