In this tutorial, we will learn about Docker Compose. Docker Compose is a tool that helps us when we work with Docker. If you use Docker to make your software, Docker Compose can make your work easier. Let’s start our learning journey. To learn more about Docker, please check Docker Tutorials page. What is Docker…
Read More Docker Compose Tutorial for BeginnersIf you’re a software developer or system administrator, you’ve probably heard of Docker – a tool that makes it easy to create and deploy applications in a standardized way. Docker allows you to package an application and all its dependencies into a single “container” that can be run anywhere, regardless of the underlying system. A…
Read More Dockerfile for a Spring Boot Application: A Beginner’s GuideIn 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 ActuatorIn a microservices architecture, it is common to have multiple services communicating with each other over the network. This distributed nature of the architecture can make it challenging to diagnose and debug issues when they arise. To address this problem, developers often use monitoring(Micrometer) and tracing tools(Zipkin) to track the flow of requests between microservices.…
Read More Micrometer and Zipkin: How to Trace HTTP Requests in Spring Boot 3The 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 TutorialThis 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 PropertiesMethod security testing is the process of testing the security of each method to make sure that only authorized users can access them. By testing the method-level security, we can ensure that our application is secure and that users can only perform the actions that they are authorized to do. Let’s say we built an…
Read More Testing Method Security in Spring BootIn 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 LineIn this REST Assured tutorial, I will demonstrate how to evaluate the JSON content that is returned in the response body of an HTTP response. What is REST Assured? REST Assured is a Java-based library for testing RESTful web services. It provides a domain-specific language (DSL) for writing tests that interact with web services using…
Read More Validate JSON Response with REST AssuredThis Spring Data JPA tutorial will demonstrate how to use the LIKE % expression in a Native SQL Query. In an advanced SQL LIKE expression, the % sign represents zero, one, or multiple characters within the SQL query. Let’s take a look at a Native JPA SQL Query that employs an advanced SQL LIKE expression…
Read More LIKE % Expression in JPA SQL QueriesThis 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 FilterThis short REST Assured tutorial will teach you how to validate the HTTP Response Status Code while testing a RESTful Web Service endpoint. Each HTTP Response includes a status code, and by examining the status code value, we can determine if the HTTP Response was successful or not. Let’s explore how we can use REST…
Read More Validate HTTP Status Code: RestAssuredThis tutorial will teach you how to use the @Query annotation to execute custom SQL queries. Spring Data JPA provides many query methods that are ready to use, allowing us to perform basic CRUD(Create, Read, Update and Delete) operations. However, there may be situations where we need to execute a custom SQL query even though…
Read More Spring Data JPA Native SQL QueryIn 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 @DeleteMappingIn this Spring Security tutorial, you will learn how to enable and use the Method Level Security with a @Secured annotation. @Secured is a Spring Security annotation used to specify that a method should be executed only if the authenticated user has the required roles or authorities. When you use this annotation, you can specify…
Read More Spring Security @Secured: Method-Level Protection