Roy Tutorials

JDBC Based Authentication The example, Spring Boot Security form based JDBC authentication, will show you how to use custom login form with Spring’s j_spring_security_check to authenticate a user. You may also look into form based jdbc authentication on Spring MVC framework. The similar example I will implement here but using Spring Boot framework. In the previous example I had used Resource Bundle that will…

Form Based Authentication The example Spring Boot Security form based authentication will show you how to use custom login form with Spring’s j_spring_security_check to authenticate a user. You may also look into form based authentication on Spring MVC framework. The similar example I will implement here but using Spring Boot framework. In the previous example I have used Resource Bundle…

Introduction Here we will see an example on sending mail using Spring email and Gmail SMTP server. We have other examples on sending emails using Spring or Java API, where we have used my own SMTP server to send emails but here we will see how to send email using Gmail SMTP server.

Introduction In this example you will see how to enable GD2 library for PHP in Windows operating System. The GD2 library is an image library used for image processing, such as, resize, crop, watermark etc. You can find more information on this here.

Introduction Here I am going to show an example on implementing caching in Spring REST web services. Caching is used to store copies of frequently accessed data in several places for the request-response path. In other words, it stores a copy of a given resource and serves it back when requested. The performance of web sites and applications can be…

Introduction Here you will see Codeigniter MongoDB CRUD example, where CRUD means Create, Read, Update and Delete. So basically you will perform creating new user, reading users/user, update existing user and deleting existing user operations into MongoDB. MongoDB is one of the widely used NoSQL(Not only SQL) database in market today. MongoDB is a document database with the scalability and flexibility that…

Introduction Here we will see an example on WebSocket on Spring MongoDB Reactive Programming. In past we have see few examples on WebSocket but this example will use Spring WebFlux, i.e., WebSocket on Spring Reactive API. WebFlux includes reactive WebSocket client and server support. Both client and server are supported on the Java WebSocket API (JSR-356), Jetty, Undertow, Reactor Netty,…

Introduction Here you will see a post ot tutorial on CodeIgniter login logout example. So here I will show you how to use CodeIgniter’s session library to store data into session or fetch data from session. You will also see how to allow a user access private area of the application once user logs into the system. I will use…

Introduction In this three pages post we will see how to create Spring MongoDB Functional Reactive Microservices Example. We are going to use here Spring 5’s Webflux API. We will also see here how to use Flux and Mono with ServerResponse, ServerRequest in Handler function. We will know how to use RequestPredicates in Router function in subsequent sections. We will…

Introduction We will see here Spring Boot MongoDB Functional Reactive CRUD Example. We have seen our previous example on Spring Boot Functional Reactive Programming but we did not use any persistent storage like MongoDB but here we are going to use MongoDB for performing CRUD operations. We are going to use Spring 5’s Webflux API with reactive stream to implement…