If you have worked on latest UI development frameworks e.g. Node, angular, gulp etc. then you must have appreciated the auto-reload of UI in browser whenever there is change in some code. Its pretty useful and saves a lot of time. Well, same feature can be utilized in spring boot applications using spring-boot-devtools dependency provided […]
In Spring boot applications, default packaging is jar which is deployed in embedded servers. If you want to generate a war file for deployment in seperate application server instances such as Jboss, Weblogic or tomcat, then follow below instructions.
In this spring boot tutorial, we will learn to validate request body sent to PUT/POST REST APIs. We will also learn to add custom error messages in API responses for validation errors using ResponseEntityExceptionHandler, @ControllerAdvice and @ExceptionHandler annotations.
String boot is very easy to use and it does a lot of things under the hood, you might not be aware of. In future, a good developer will be who will know exactly what is going on behind spring boot auto configuration, how to use it in your favor and how to disable certain sections which you do not want into your project.
In this Spring HATEOAS example, we will learn to add HATEOAS links to existing REST APIs created in a spring boot project. We will use the class org.springframework.hateoas.ResourceSupport along with org.springframework.hateoas.mvc.ControllerLinkBuilder and org.springframework.hateoas.Link classes provided by spring HATEOAS module. To demo the creation of links, we will first create few REST APIs and see their […]
The spring-boot-starter-parent dependency is the parent POM providing dependency and plugin management for Spring Boot-based applications. It contains the default versions of Java to use, the default versions of dependencies that Spring Boot uses, and the default configuration of the Maven plugins.
Spring Boot comes with over 50+ different starter modules, which provide ready-to-use integration libraries for many different frameworks, such as database connections that are both relational and NoSQL, web services, social network integration, monitoring libraries, logging, template rendering, and the list just keeps going on.
In this Spring boot actuator tutorial, learn about inbuilt HTTP endpoints available to any boot application for different monitoring and management purpose.
Learn to consume SOAP webservices using spring’s WebServiceTemplate and auto client proxy class generation using JAXB maven plugin. Creating a SOAP webservice is out of scope of this tutorial, but you may learn it here.
In this tutorial, learn to create and consume RSS and Atom feed from spring boot application. You must have seen this in form of text or image buttons on various websites (like our RSS feed) inviting you to “Subscribe via RSS.” RSS is simple syndication API – often referred as Rich Site Summary. RSS revolutionized […]
In this spring boot soap tutorial, we will focus only in the Spring boot related configurations to see how easily we can create our contract first SOAP webservice.
In this spring boot example, learn to configure web application to run on SSL (HTTPS) with self-signed certificate. Also learn to create SSL cert, as well.
Learn to create JAX-RS 2.0 REST APIs using Spring Boot and Jersey framework, and add role based security using JAX-RS annotations e.g. @PermitAll, @RolesAllowed or @DenyAll. Table of Contents Project Structure Create REST APIs Secure REST APIs with JAX-RS Annotations Write security filter using JAX-RS ContainerRequestFilter Demo Project Structure The project structure of application created […]
Learn to configure and create JAX-RS 2.0 REST APIs using Spring Boot and Jersey framework. This example application uses Jersey’s ServletContainer to deploy the REST APIs.
Learn to configure Spring boot application with embedded ActiveMQ for sending and receiving JMS messages with help of JMSTemplate.
PropertyEditor is originally part of the JavaBeans specification. Spring also heavily uses the PropertyEditors to be able to represent properties in a different way than the object itself e.g. parsing human readable inputs from http request params or displaying human readable values of pure java objects in view layer. Spring has a number of built-in […]
To schedule job in spring boot application to run periodically, spring boot provides @EnableScheduling and @Scheduled annotations. Lets learn to use them. Let’s say you want to run job at every 10 seconds interval. You can achieve this job scheduling in below steps: 1) @EnableScheduling to Spring Boot Application class Add @EnableScheduling annotation to your […]
Spring boot’s CommandLineRunner interface is used to run a code block only once in application’s lifetime – after application is initialized. How to use CommandLineRunner You can use CommandLineRunner interface in three ways: 1) Using CommandLineRunner as @Component This one is fairly easy. 2) Implement CommandLineRunner in @SpringBootApplication This is also possible. Sample code given […]
Spring boot loads lots of beans internally to run your application with minimal configuration. In this example, we will learn to find out all those spring boot loaded beans and their class type information. Using ApplicationContext to get all loaded beans To execute a method automatically, when application is fully loaded, I am using CommandLineRunner […]
Learn spring boot logging configuration via application.yml file in simple and easy to follow instructions. In the default structure of a Spring Boot web application, you can locate the application.yml file under the resources folder. Table of Contents Understand default spring boot logging Set logging level Set logging pattern Set logging output to file Using […]