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 […]
Spring MongoDB Functional Reactive Microservices Example
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 […]
Spring Boot MongoDB Functional Reactive CRUD Example
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 […]
Angular + Spring Boot MongoDB CRUD Example
Introduction In this post we will create Angular + Spring Boot MongoDB CRUD Example. In my previous tutorial on Spring Boot MongoDB CRUD Example, we did not have any UI or front-end, so we had to test out application using REST client but here we will use Angular on front-end side so that we can […]
Spring Boot MongoDB CRUD Example
Introduction Here we will see a post on Spring Boot MongoDB CRUD example, where CRUD means Create, Read, Update, and Delete operations. For performing CRUD operations on MongoDB through Spring Boot framework, we need to add required dependency. We will use Spring REST controller to expose our MongoDB CRUD operations onto REST or RESTful API. […]
Wrap REST API with GraphQL in Spring Boot
Introduction This post will show you how to wrap REST API with GraphQL in Spring Boot framework. So here we will create a Java based GraphQL server. When you come to know that GraphQL has advantages over REST API and you want to start using GraphQL but you are stuck with legacy REST APIs. Then […]
Spring Boot Data JPA CRUD Example
Introduction We will see here Spring Boot Data JPA CRUD example. CRUD means Create Read Update and Delete operations. We will use in-memory h2 database in order to perform CRUD operations in database. We have other example on Spring Data JPA CRUD example but the application does not use Spring Boot. In this example, we […]
Upload file using React and Spring Boot
Introduction In this tutorial we will see how to upload file using React and Spring Boot technologies. React or React JS will be used as a client side or front end technology and Spring Boot will be used as a server side technology for uploading file. We will upload file to server using Spring REST […]
Download file using React and Spring Boot
Introduction In this post we will see how to download file using React and Spring Boot. There are situations where you need to download file from server or you need to generate report from database and download it. This example may help you in that situation. Here we will fetch records from database and download […]
Gmail SMTP and Security settings for sending email
Introduction We will see here how to do Gmail SMTP and Security settings for sending email using programming language. You can use any server side technology for sending email using Gmail SMTP server. This example will show you only what configurations you need in order to send email and it does not show any concrete […]