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Tag Archives: Spring

Spring Batch Tutorial with Spring Boot and Java Configuration

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I’ve been working on migrating some batch jobs for Podcastpedia.org to Spring Batch. Before, these jobs were developed in my own kind of way, and I thought it was high time to use a more “standardized” approach. Because I had never used Spring with java configuration before, I thought this were a good opportunity to learn about it, by configuring the Spring ...

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Secure REST services using Spring Security

spring-interview-questions-answers

Overview Recently, I was working on a project which uses a REST services layer to communicate with the client application (GWT application). So I have spent a lot of to time to figure out how to secure the REST services with Spring Security. This article describe the solution I found, and I have implemented. I hope that this solution will ...

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Validation groups in Spring MVC

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Validation constraints in Bean Validation may be added to one or more groups via groups attribute. This allows you to restrict the set of constraints applied during validation. It can be handy in cases where some groups should be validated before others like e.g. in wizards. As of Spring MVC 3.1, automatic validation utilizing validation groups is possible with org.springframework.validation.annotation.Validated ...

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Spring Batch as Wildfly Module

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For a long time, the Java EE specification was lacking a Batch Processing API. Today, this is an essential necessity for enterprise applications. This was finally fixed with the JSR-352 Batch Applications for the Java Platform now available in Java EE 7. The JSR-352 got it’s inspiration from the Spring Batch counterpart. Both cover the same concepts, although the resulting ...

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Spring 4.1 and Java 8: java.util.Optional

spring-interview-questions-answers

As of Spring 4.1 Java 8’s java.util.Optional, a container object which may or may not contain a non-null value, is supported with @RequestParam, @RequestHeader and @MatrixVariable. While using Java 8’s java.util.Optional you make sure your parameters are never null.     Request Params In this example we will bind java.time.LocalDate as java.util.Optional using @RequestParam: @RestController @RequestMapping("o") public class SampleController { ...

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