Spring Framework is a popular Java-based framework that provides a comprehensive infrastructure for developing Java applications. The framework was initially released in 2002 by Rod Johnson, who was frustrated with the complexity of the existing Java EE (Enterprise Edition) platform. He wanted to create a simpler and more lightweight framework that would make it easier…
Read More Excel in Spring Framework: The Complete GuideSpring Boot CLI is a command-line interface tool that allows developers to create and run Spring applications without needing an external development environment. This tutorial will teach you how to install Spring Boot CLI on macOS and Windows. Let’s begin with macOS. Installing Spring Boot CLI on macOS To install Spring Boot CLI on macOS,…
Read More Installing Spring Boot CLIWhat is Spring Batch? Spring Batch is a lightweight, broad batch framework that builds upon the characteristics of the Spring Framework that enables the development of robust batch applications, which plays a vital role in the daily operations of enterprise systems. Spring Batch provides many reusable functions that are necessary for processing records with large…
Read More Spring Batch TutorialRunning a Spring Boot application in a Docker container is a great way to package and deploy your application. By packaging your application in a Docker container, you can easily distribute it to other machines and ensure that it runs in the same environment on each machine. In this blog post, I will show you…
Read More Run Spring Boot Application in Docker with ProfileIn this tutorial, we’ll implement a RestTemplate Error Handling Example. But before moving ahead, let’s see why is there a need to do this? The answer is: It becomes very tedious to handle exceptions through try/catch blocks as applications scale. An Efficient way to avoid this hassle is to implement a reusable error handler that…
Read More RestTemplate Error Handling ExampleThis tutorial will teach you how to implement Role-based access control in the new Spring Authorization Server. You will learn how to add a user role to a JWT token issued by Spring Authorization Server and configure Spring Resource Server to secure access to the API endpoint based on a user role. 1. Create, Run…
Read More Role-based Access Control in Spring Authorization ServerThis tutorial will teach you how to leverage RestTemplate to access RESTful APIs protected by basic authentication. You will learn to create a Basic Authentication-secured REST API and access it via RestTemplate. What is Basic Authentication As the name suggests, it is a basic form of authentication in which we must provide the correct username…
Read More RestTemplate Example with Basic AuthenticationIn this tutorial, we’ll learn what IoC (Inversion of Control) and DI (Dependency Injection) are, as well as take a look at how these are implemented in the Spring framework. What Is Inversion of Control (IoC)? Inversion of Control is a principle in software engineering that separates the control of objects or how parts of…
Read More Dependency Injection and Inversion of Control in SpringWhen developing Spring Boot applications, we need to tell the Spring Framework where to look for the custom code that we wrote. Using component scan is one method of asking Spring to detect the components of our application which Spring will then manage for us from Initialization to Execution. Spring needs the information to locate…
Read More Component Scanning in a Spring Boot ApplicationIn this tutorial, you will learn how to define custom filters and specify their order of invocation in the Spring Boot application. What is a custom filter? Filters enable us to filter on either the request to a resource, the response from a resource, or both. Spring Boot provides a few options to register custom…
Read More How to Define Custom Filters in Spring BootIn this tutorial, you will learn how to use TestRestTemplate to get a list of objects. If you are also interested to learn how to send an HTTP POST request, then please have a look at the “TestRestTemplate HTTP Post Example” tutorial. Maven Dependency To use TestRestTemplate in your Spring Boot project, you should have the…
Read More Get List of Objects with TestRestTemplateThis tutorial will teach you how to use TestRestTemplate to send HTTP Post requests. If you are also interested to learn how to send an HTTP GET request, then please have a look at the “Get List of Objects with TestRestTemplate” tutorial. What is TestRestTemplate? TestRestTemplate is HTTP Client that you use for Spring Boot…
Read More TestRestTemplate HTTP Post ExampleIn this tutorial, you will learn how to get the port number on which your Spring Boot application is running. Whether it is a defined port number or a random port number. Let’s start learning how to get the running port number first. @LocalServerPort Annotation If your Spring Boot application is configured to start on…
Read More Get the Random Port Number in Spring BootIn this tutorial, you will learn about @SpringBootTest annotation. You will use this annotation to write Integration Tests for your Spring Boot application. @SpringBootTest annotation is used to create a Spring Application Context that will be used during the test. It will make Spring Framework scan your application classes and look for different annotations. Depending…
Read More @SpringBootTest Annotation ExampleYou will use @MockBean annotation to create and automatically add mocks to Spring ApplicationContext. In this tutorial, we will look at different ways you can use @MockBean annotation to create mocks. If you are testing your application with JUnit and Mockito, then there are many other useful tutorials you will find on the Testing Java Code…
Read More @MockBean Annotation Example