In 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 blog post 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…
Read More Spring Boot : Reading properties fileLet’s say we built an application that has different roles assigned to users. We want each role to be able to perform certain actions, and to do that, we need to give them authorization to access the corresponding methods. This authorization process requires the role to be authenticated before the method can be executed. Authentication…
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 LineThis 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 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 Boot – @PostMapping, @GetMapping, @PutMapping, @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 ProtectionIn this tutorial, you will learn how to use the @PostAuthorize annotation to secure the return of the method’s return value in your Spring Boot Application. The @PostAuthorize annotation is evaluated after the business logic in a method is executed and if needed will prevent the method from returning a return value. There are other…
Read More @PostAuthorize Security Annotation ExampleIn this Spring Boot Security tutorial, you will learn how to use Spring method-level security to secure RestController methods with @PreAuthorize annotation. If you are interested in video lessons, then I also show how to create user Roles and Authorities and how to use Spring Method Level Security annotations in my video course: RESTful Web…
Read More Spring Method-Level Security with @PreAuthorizeIn previous video tutorials, I have shared with you how to read Request Path parameters, Query String parameters, and Form data. In this tutorial, you will learn how to make a method in the Controller class read JSON data from an HTTP request. To read the body of an HTTP request, we will use the…
Read More Reading JSON in Spring with @RequestBodyThis tutorial will teach you how to retrieve URI path variables in your Spring MVC web application. Define Path Variable To define a path variable in the URI path, we use curly brackets. For example, the @GetMapping annotation below specifies one path variable called userId, which is surrounded by curly brackets. @GetMapping(path=”/users/{userId}”) @PathVariable Annotation To…
Read More Spring MVC: Reading URI Path VariablesIn this tutorial, I will show you how to add support for the H2 in-memory database to your Spring Boot project with Spring Security enabled. By the end of this tutorial, you will be able to watch a video demonstration of how to implement it. After following the steps below, your Spring Boot project will…
Read More Add H2 Database to Spring Boot with Spring Security: A GuideThis 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 Boot