Keeping sensitive data secure is essential, but it isn’t that easy in today’s world. If you are using the Spring Boot application and want to encrypt your credentials, such as DB passwords, server information, or personal data then the simplest way is to use Jasypt. What is Jasypt? Jasypt (Java Simplified Encryption) is a Java…
Read More Spring Boot Password Encryption Using JasyptIn this tutorial, you will learn how to generate a custom JSON Web Token(JWT) and how to add and validate custom JWT Claims using the io.jsonwebtoken library. The JWT token generated in this tutorial will be signed with a SecretKey, making it secure and tamper-proof. Also, this tutorial assumes you have prior knowledge of creating…
Read More Generate JWT. Add and Validate Custom Claims.In this guide, I’ll show you how to create a Fat Jar with Spring Boot. Together, we’ll build a simple ‘UsersMicroservice’, then pack it into a Fat Jar. Don’t worry if you’re new, I’ll guide you step-by-step and answer your top questions along the way. Let’s get started! What is a Fat JAR? A Fat…
Read More Creating a Fat Jar App with Spring BootIn this tutorial, you will learn what the @Respository annotation is and how to use it in your Spring Boot applications. @Repository is a Spring annotation that indicates that the decorated class is a repository. A repository is a mechanism for encapsulating storage, retrieval, and search behaviour which emulates a collection of objects. How to…
Read More @Repository Annotation in Spring@Component is a Spring annotation that is used to indicate that a class is a component. Components are objects that make up the structure of an application and are responsible for performing specific tasks. They are typically used to represent services, controllers, repositories, and other types of objects that are used to implement business logic…
Read More @Component Annotation in SpringIn this tutorial, you will learn about the difference between two Spring Boot dependencies – Spring Boot Actuator and Spring Boot Starter Actuator. If you’re new to Spring Boot, these terms may sound confusing, but don’t worry, by the end of this tutorial, you’ll understand the difference between them. Spring Boot is a popular framework…
Read More Spring Boot Actuator vs Spring Boot Starter ActuatorSpring Boot Actuator is a useful feature that provides developers with a set of tools to monitor and manage their applications. However, some of the actuator endpoints are sensitive and can potentially expose sensitive information about your application. In this article, we’ll explore different ways to secure these endpoints to ensure your application is protected.…
Read More Securing Spring Boot Actuator Endpoints: Best PracticesIn this tutorial, I will explain in detail how to secure sensitive Spring Boot Actuator Endpoints using Spring Boot version 3. This tutorial is intended for beginners who want to learn how to monitor and manage their Spring Boot applications using Actuator. Spring Boot Actuator is a sub-module of Spring Boot that provides production-ready features…
Read More How to Secure Spring Boot Actuator Endpoints with Basic AuthenticationThe RestTemplate class within the Spring Framework is a simple HTTP client that enables your code to send HTTP requests and handle HTTP responses. This tutorial will demonstrate how to use RestTemplate to send various types of HTTP requests. Create Spring Boot App RestTemplate is a component of the Spring Framework and is typically utilized…
Read More Spring RestTemplate TutorialIn this tutorial, you will learn how to enable OpenAPI(Swagger) in your Spring Boot version 3 application. What is OpenAPI? OpenAPI (formerly known as Swagger) is a specification for building and documenting RESTful APIs. It allows developers to describe their API operations, inputs, outputs, and other aspects in a structured and machine-readable format. This documentation…
Read More Enable OpenAPI 3(Swagger) in Spring Boot 3In this tutorial, you’ll learn how to use the @PutMapping annotation in your RESTful web services app to handle HTTP PUT requests with a JSON or XML payload. This allows you to update user details, for example. Here’s an example CURL command to send an HTTP PUT request with JSON data containing user details: HTTP…
Read More @PutMapping in Spring Boot RESTThis tutorial covers three distinct methods for reading application properties in a Spring Boot application. These methods include: Using the Environment object. Using the @ConfigurationProperties annotation. Using the @Value annotation. I made a simple Spring Boot Web App to show you how to read application properties. You can use the tutorial Create a Simple Web…
Read More Spring Boot: Reading Application PropertiesIn this blog post, I will share how to run a Spring Boot app from the command line in a Terminal window. There are a couple of ways to do this, and both assume that you have already created your Spring Boot app. If you need help creating a new Spring Boot app, please check…
Read More How to Run Spring Boot App via Command LineThis blog post will guide you on reading the body of an HTTP request in the filter class of your Spring Boot application. For more code examples, you can refer to the Spring Boot tutorials page. What is a Spring Filter? A Spring Filter is an object that intercepts incoming HTTP requests and outgoing HTTP…
Read More Reading Request Body in Spring FilterIn this blog post, I will share the Spring annotations used to map HTTP requests to specific handler methods. These annotations include @PostMapping, @GetMapping, @PutMapping, and @DeleteMapping. While most Spring Boot applications use the @RequestMapping annotation, which I will also cover in this post, I’ll begin with the newer shortcut annotations that have been available…
Read More Spring Annotations @PostMapping, @GetMapping, @PutMapping and @DeleteMapping