Search results for: Spring Security

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In 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 JPA
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Dependency Injection is a design pattern that allows the separation of concerns in an application by removing the hard-coded dependencies between objects. In Dependency Injection, the objects are provided with their dependencies instead of having to hard-code them. This makes the application more flexible, maintainable, and easier to test. Spring Framework provides several ways to…

Read More Field-based Dependency Injection in Spring
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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 Guide
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This tutorial will teach you how to migrate from the depricated WebSecurityConfigurerAdapter towards the content-based security configuration. Spring Security allowed customizing HTTP security by extending a WebSecurityConfigurerAdapter class. This customization included user authorization, user authentication, etc. But in Spring Security 5.7.0-M2 the WebSecurityConfigurerAdapter is deprecated. This is because Spring Framework developers encourage users to move…

Read More (Solved!) Deprecated WebSecurityConfigurerAdapter
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In this article, we will cover the basics of Aspect-Oriented Programming (AOP). You will learn how to use AspectJ to provide different AOP advices to Spring Boot applications to support cross-cutting issues like logging, profiling, caching, and transaction management and finally we will do a practical implementation to record user operations using Spring Boot AOP.…

Read More A guide to Spring Boot AOP to Record User Operations

Spring Web MVC – Overview for Beginners (Includes video tutorial) Configure JSP Support (Includes video tutorial) Configure Thymeleaf Support (Includes video tutorial) The Model Object (Includes video tutorial) The ModelMap Object (Includes video tutorial) The ModelAndView Object (Includes video tutorial) Reading URI Path Variables (Includes video tutorial) Reading URL Query String Parameters (Includes video tutorial) Read Form Data in Spring Web MVC…

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by 0 comments on "Writing into DynamoDB in a Spring Boot App using AWS Lambda"

In this tutorial, we are going to see how to insert records into a DynamoDB table using an AWS Lambda function written using Spring Boot Java. We are also going to add an AWS API Gateway trigger to the Lambda function and see how it works. To follow this tutorial, make sure that you have…

Read More Writing into DynamoDB in a Spring Boot App using AWS Lambda
by 0 comments on "Fine-grained Authorization Services in Keycloak with Spring Boot"

In the previous blog post, we have covered how to grant access to certain endpoints based on the Role configured through code. As we know, Keycloak is the Identity and Access Management solution that provides out-of-the-box authentication and authorization services. One of the services includes a Fine-Grained Authorization Service. Fine-Grained Authorization Service provides businesses with…

Read More Fine-grained Authorization Services in Keycloak with Spring Boot
by 0 comments on "Amazon Cognito User Authentication in Spring Boot REST"

In the previous tutorial, we learned that how we can do User Authentication with Amazon Cognito in Spring Boot Application. In this tutorial, we will take our previous learnings and continue with the following. Create Rest Controller to handle /login HTTP POST requests. Read username and password from the request body to authenticate with Amazon Cognito…

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Spring Boot is a popular framework for building Java-based web applications. It provides a simple and efficient way to build, deploy and run Java applications quickly. In this tutorial, we’ll explore the framework’s basics, including its features, advantages over the Spring Framework, and how to get started with creating your first application using it. Whether…

Read More Spring Boot: Getting Started Guide
by 0 comments on "A Guide to use Keycloak with Spring Boot"

This tutorial will teach you how to use Keycloak to secure your Spring Boot Application. To find other tutorials, check the Keycloak tutorials page. What is Keycloak? According to Keycloak’s  official website, It is an open-source Identity and Access Management solution aimed at modern applications and services. It makes it easy to secure applications and…

Read More A Guide to use Keycloak with Spring Boot