This tutorial will guide you on how to incorporate JUnit support into your Spring Boot application based on Maven. Introduction Brief Explanation of JUnit and Its Importance in Testing JUnit is a popular open-source testing framework for Java applications. It provides a set of tools and methods for writing and running automated tests, making it…
Read More JUnit Support in Spring BootIn the software development process, testing is essential. There are two types of testing i.e. unit testing and integration testing. While unit testing focuses on testing the smallest component of an application, integration testing focuses on testing the end-to-end behavior of the application also known as endpoint testing. Integration testing verifies the @Controller and @RestController…
Read More Testing Spring Boot Applications with MockMvcIn this blog post, I will share how to copy properties from a DTO object to an Entity object and then back from an Entity object to a DTO object. DTO stands for Data Transfer Object, and it is a simple, Plain Old Java Object that typically contains class properties and getter and setter methods…
Read More DTO to Entity Conversion in JavaThis tutorial will teach you how to use project Lombok in the Spring Boot application. Overview No doubt Java is a wonderful language, but one of the drawbacks of Java is its verbose nature. This makes it fairly complicated for everyday tasks such as composing a simple POJO object. For example, constructing of methods like Getters(), Setters(),…
Read More How to use Project Lombok in Spring BootThis tutorial will teach you how to add Spring Security to your project and enable in-memory basic authentication. You will learn how to configure two different users with different Roles and Privileges. Both users’ roles and privileges will be stored in the memory of your Spring Boot application. If you use Spring Framework and OAuth,…
Read More Spring Security In-Memory AuthenticationIn this article, you will learn how to perform user authentication with Amazon Cognito in a Spring Boot application. But before we dive into that, let’s first explore what Amazon Cognito is. According to what’s mentioned on the AWS official website: Amazon Cognito lets you add user sign-up, sign-in, and access control to your web…
Read More User Authentication with Amazon Cognito in Spring Boot ApplicationThis tutorial will teach you how to start your Spring Boot application on a random port number. Starting an application on a random port number is very helpful when you need to start multiple instances of the same Spring Boot application and then balance HTTP requests between the running instances. If you want to learn…
Read More Start Spring Boot App on a Random Port NumberIn this article, we will learn about Many-to-Many relationships in JPA and how to implement them in a Spring Boot application. Let’s get started! @ManytoMany annotation A many-to-many relationship occurs when multiple records in one table are associated with multiple records in another table. The @ManyToMany annotation is used to define a many-valued association with…
Read More Many-to-Many Relationship in Spring Boot Rest with JPAIn this guide, I will walk you through the Caching Abstraction in Spring Boot and how to improve the application’s performance. I will walk you through how to enable default caching in Spring Boot with an example of different use cases. What is Cache? A cache is a small and fast, efficient memory space that…
Read More Spring Boot Caching with ExamplesSpring Boot offers various methods and techniques for setting up your database. It can automatically create and initialize the database using the information in the data source. Spring Boot looks for SQL files in specific locations in your project’s classpath, such as “schema.sql” and “data.sql”. In this tutorial, you will learn how to configure your…
Read More Database Initialization with Spring BootIn this Spring Security tutorial, you will learn how to enable Basic Authentication for your Spring Boot project and configure the default username, password and user role. You will also learn how to secure a web service request URL so only authenticated users with a default username, password and role can access it. If you use…
Read More Spring Security Default Username, Password, RoleIn 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 SpringIn Spring Boot 3, the authorizeRequests() method of the WebSecurityConfigurerAdapter class has been deprecated. This method was previously used to configure the authorization rules for securing web applications. To secure your application in Spring Boot 3 using Spring Security, you should use the HttpSecurity class and its authorizeHttpRequests() method instead. You can use the authorizeHttpRequests() method…
Read More Migrating from a Deprecated autorizeRequests()In this tutorial, you will learn what @Scope annotation is and how to use it in Spring. @Scope is a Spring annotation used to specify a bean’s lifecycle. It can be used to define the lifecycle of a bean as a singleton, prototype, request, session, or global session. If you are interested to learn about other…
Read More @Scope Annotation in SpringIn this tutorial, you will learn what the @RequestMapping annotation is and how to use it in Spring. @RequestMapping is a Spring Boot annotation that is used to map a specific HTTP request method to a specific Java method. It is commonly used in RESTful web services to specify the request type (GET, POST, PUT,…
Read More @RequestMapping Annotation in Spring