In OAuth 2.0, we can have many different types of Client Applications that users can use to access Resource Server’s resources. For example, we have native mobile applications, web applications including Single Page Application, console or backend applications, etc. These Client Applications will need to… Read More
Java Module System was introduced by Java from Java 9 to solve some problems of Java that if you notice you will see how its necessary? NoClassDefFoundError: This error occurs while our Java program is running. The JVM cannot find the class needed to execute… Read More
We use Dockerfile to configure and build Docker images. To run Docker containers from these Docker images, you can use the command line or Docker Compose. The benefit of Docker Compose is that you can define and run multiple Docker containers at the same time.… Read More
In this tutorial, I will show you how to install PostgreSQL server using Docker! We will use the docker run command to run a PostgreSQL Docker Image on Docker Hub https://hub.docker.com/_/postgres as follows:
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docker run --name <container_name> -e POSTGRES_USER=<postgre_user> -e POSTGRES_PASSWORD=<postgre_password> -p 5432:5432 -v <mount_folder>:/var/lib/postgresql/data -d postgres:<tag> |
Inside: — name <container_name> is the Docker container name that you… Read More
As I said in the tutorial about Overview about request processing in Spring Security, the UsernamePasswordAuthenticationFilter class is a filter that will take care of authentication in Spring Security and by default, the user’s username and password information will be used for the authentication process.… Read More
The RSA encryption algorithm uses a pair of public key and private key to implementing the security mechanism. Public key is used to encrypt information and private key is used to decrypt the information and vice versa. Java provides us with several classes to work… Read More
Normally, we won’t use Spring Security’s default login page for applications deployed to production, you can guess why, right? This default login page for us to learn mainly. So to replace this default login page, how do we do? In this tutorial, I will guide… Read More
I showed you how to install and configure to use Spring Security in Spring MVC applications. With Spring Boot application, configuring Spring Security will be much simpler. We do not need to go through each step to configure the authentication and authorization of the application.… Read More
I don’t know how you guys work with Java web applications using front-end frameworks such as JQuery, Bootstrap, … but for me, the management and configuration to use these frameworks is sometimes a big problem. For example, using the Backbone.JS library, this library has a… Read More
In the tutorial showing you how to implement WebSocket with Spring WebSocket, my example application will allow all clients to receive all messages when they subscribe to the endpoint, and in the tutorial about sending messages to a specific user, my example application allows the… Read More
