In this article, we will cover the basics of Aspect-Oriented Programming (AOP). You will learn how to use AspectJ to provide different AOP advices to Spring Boot applications to support cross-cutting issues like logging, profiling, caching, and transaction management and finally we will do a practical implementation to record user operations using Spring Boot AOP.…
Read More A guide to Spring Boot AOP to Record User OperationsIn this tutorial, you will learn how to create and configure the new Spring OAuth Authorization Server. Video Demonstration To demonstrate how to configure and use the new Spring Authorization Server, I have created a series of step-by-step video lessons. You can access these video lessons by enrolling in my video course called “OAuth 2.0…
Read More Spring Authorization Server TutorialIn this tutorial, you will learn about JUnit5 Lifecycle methods. A Lifecycle Method is any method that is directly annotated or meta-annotated with @BeforeAll, @AfterAll, @BeforeEach, or @AfterEach. Let’s have a look at these annotations one by one. @BeforeAll When a method is annotated with @BeforeAll it means that the method should be executed before…
Read More A Guide to JUnit5 Lifecycle MethodsIn this tutorial, you will learn about Unit Testing AWS Lambda Function with Java. First, we will have a quick overview of Unit Testing. Then we will look at the required dependencies in order to do Unit Testing of AWS Lambda Function. After that, we will dive deep into the annotations that will be used…
Read More Unit Testing AWS Lambda Function with JavaIn this guide, you will learn to use @RepeatedTest and @ParametrizedTest annotations introduced in JUnit 5. We’ll look at the capability that lets us run a test a certain number of times. We’ll also look at interfaces that will allow us to retrieve information about the repeated tests. Moreover, we will also look at a…
Read More A Guide to @RepeatedTest and @ParametrizedTest in JUnit 5In this tutorial, you will learn to configure your Spring Boot Web MVC application support Thymeleaf templates. Thymeleaf Maven Dependency To make your Spring Boot Web MVC application support Thymeleaf templates, you will need to add one additional dependency to the pom.xml file. <!– https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-thymeleaf –> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> Templates Folder In the Spring…
Read More Spring Web MVC – Configure Thymeleaf SupportIn this tutorial, you will learn how to configure the Spring Boot Web MVC application to support JSP(Java Server pages) and JSTL(JSP Standard Tag Library). Video Tutorial Maven Dependencies To configure your Spring Boot application to support Spring MVC, JSP and JSTL add the following maven dependencies to the pom.xml file. Spring Web The following…
Read More Spring Web MVC – Configure JSP SupportIn this tutorial, you will learn how to secure access to User’s Data in RDS using Lambda Authorizer. First, the Lambda Authorizer function will authenticate the caller by validating JWT using nimbus-jose-jwt library. After that, the Lambda Authorizer function will return an output object containing an IAM policy. The Authorizer will also return additional information…
Read More Lambda Authorizer – Secure Access to User’s Data in RDSIn this tutorial, you will learn how to implement the API Gateway Lambda Authorizer in Java. You will also learn how to make Lambda Authorizer validate Authorization JWT. First, we will create an API using API Gateway then we will make lambda function as an integration point for the GET method of our resource. After…
Read More API Gateway Lambda Authorizer Example in JavaIn this tutorial, we will read user data from AWS RDS with an access token. You can have a look at the following tutorials before moving ahead. Build and deploy a Serverless Spring Boot Web Application with AWS Lambda AWS Lambda with Spring Boot – A Simple GreetMe Example Amazon Cognito User Authentication in Spring…
Read More Reading user data from AWS RDS with an access tokenIn this article, you will learn about RabbitMQ and explore its common use cases. I will also guide you step-by-step on how to implement messaging using RabbitMQ in a Spring Boot application. By the end of this article, you will know how to publish and consume messages in a queue. So let’s get started! What…
Read More Messaging with RabbitMQ in Spring Boot ApplicationIn this tutorial, we are going to see how to insert records into a DynamoDB table using an AWS Lambda function written using Spring Boot Java. We are also going to add an AWS API Gateway trigger to the Lambda function and see how it works. To follow this tutorial, make sure that you have…
Read More Writing into DynamoDB in a Spring Boot App using AWS LambdaIn the previous blog post, we have covered how to grant access to certain endpoints based on the Role configured through code. As we know, Keycloak is the Identity and Access Management solution that provides out-of-the-box authentication and authorization services. One of the services includes a Fine-Grained Authorization Service. Fine-Grained Authorization Service provides businesses with…
Read More Fine-grained Authorization Services in Keycloak with Spring BootIn this tutorial, you will learn about Spring Boot Actuator. You will also see how it helps to monitor and manage your application seamlessly. Overview The actuator is a monitoring function provided by the Spring Boot framework. The actuator works by exposing endpoints that can be used to monitor the internal conditions of the Spring…
Read More Spring Boot Actuator TutorialThis tutorial is about creating an AWS Lambda function using Spring Boot and adding an S3 trigger to it. Amazon S3 or Simple Storage Service is a cloud object storage service offered by AWS. It is a scalable, high-speed, web-based cloud storage service to store data objects in a bucket structure. Ensure that you have…
Read More AWS Lambda with S3 Trigger using Spring boot