JAVA

Spring Boot Data JPA Left, Right, Inner and Cross Join Examples - JEE Tutorials. This tutorial will show you Spring Boot Data JPA Left, Right, Inner and Cross Join Examples.

We will create here Spring Boot application, where we will use Spring Data JPA Repository to query our database tables. We will use here custom query using @Query annotation to fetch the data. We will also fetch the columns which are required to fetch for displaying purpose. GitHub - joshlong/spring-integration-mqtt: Spring Integration adapter supporting MQTT. JWT Authentication with Ionic 3 and Spring Boot. Step-by-Step Guide to Deploying Your First Full-Stack Spring Boot Application in AWS. Feel free to email me if you have suggestions or questions about this tutorial or Spring Boot AWS setup in general.

Building and deploying a full-stack web application into the cloud can be a challenge even for experienced software engineers. Often times we become so specialized in front-end, back-end, or dev-ops that releasing even a trivial full-stack application can be an odyssey into stackoverflow and beyond. This guide starts with a simple Spring Boot hello world application, wires it into a database, and goes through each step in deploying it to AWS backed by a Postgres database. We will first build and deploy the application locally and then deploy it to AWS. The first thing is getting your environment set up with the Java 8 JDK, git, Maven 3, and PostgresSQL.

Brew install java brew install maven brew install git brew install postgresql Now that our dev environment is configured, lets build a web application. Spring 4 + SOAP Web Service Producer and Consumer Example with Tomcat. By Arvind Rai, January 02, 2015 This page will provide spring 4 and SOAP web service integration to produce and consume soap request and response using annotation.

Java Rest API best practices. Guidelines with Spring Boot. Development of Restful API with Java can become straightforward when following best practices, leveraging compiler checks and code consistency.

Here is an example of an application which follows Java API developmnet best practices with Spring Boot and Docker. The source code is freely available on github: You can run the application from Maven, from Docker or as Java executable. To build the application you will need Maven and Java8. To run from maven: Minification of JS and CSS Assets with Maven. 1.

Overview This article shows how to minify Javascript and CSS assets as a build step and serve the resulting files with Spring MVC. We will use YUI Compressor as the underlying minification library and YUI Compressor Maven plugin to integrate it into our build process.

SPRING

Tutoriel sur l'utilisation de Spring Web Services. Dans cet article, nous aborderons les services Web avec Spring Web Services ainsi que les concepts relatifs aux services Web.

Nous traiterons également les questions suivantes : Securing REST APIs With Spring Boot. In my previous post I described how to build REST APIs with Spring Boot.

One glaring omission to that post was security. Security can be a daunting part of building any app because if you get it wrong there are huge implications. Luckily with Spring Boot, like with most other things, adding security to your applications is pretty simple. [Guide] Building a simple REST API with Spring Boot. Simple getting started blog post on how to create a Spring Boot application from Scratch!

This guide will show how to setup a simple REST API with Spring Boot. The Spring Boot guys have been so pleasent to create a page for easy configuration of your project dependencies. Go to Spring Initializer at start.spring.io. If you use IntelliJ or Spring Tool Suite, you get the same options within these environments as well - hell, they even added a possibility to configure your project via curl (if you are interested, have a look at it here here!). GitHub - g00glen00b/spring-samples. Java Persistence/OneToMany.

A OneToMany relationship in Java is where the source object has an attribute that stores a collection of target objects and if those target objects had the inverse relationship back to the source object it would be a ManyToOne relationship.

All relationships in Java and JPA are unidirectional, in that if a source object references a target object there is no guarantee that the target object also has a relationship to the source object. This is different than a relational database, in which relationships are defined through foreign keys and querying such that the inverse query always exists. GitHub - inventit/mqtt-websocket-java: MQTT over WebSocket library for Java with Paho and Jetty. 26. WebSocket Support.

This part of the reference documentation covers Spring Framework’s support for WebSocket-style messaging in web applications including use of STOMP as an application level WebSocket sub-protocol.

Section 26.1, “Introduction” establishes a frame of mind in which to think about WebSocket, covering adoption challenges, design considerations, and thoughts on when it is a good fit. The WebSocket protocol RFC 6455 defines an important new capability for web applications: full-duplex, two-way communication between client and server. It is an exciting new capability on the heels of a long history of techniques to make the web more interactive including Java Applets, XMLHttpRequest, Adobe Flash, ActiveXObject, various Comet techniques, server-sent events, and others.

Using WebSockets with Spring, AngularJS and SockJS. A while ago I wrote a tutorial about writing a web application using Spring, AngularJS and WebSockets. However, that tutorial only used a fraction of what WebSockets could do, so in this tutorial I will explain how you can write a small chat app using the same frameworks; Spring, AngularJS, Stomp.js and SockJS.

GitHub - spring-projects/spring-integration-samples: You are looking for examples, code snippets, sample applications for Spring Integration? This is the place. Paho - Open Source messaging for M2M. MQTT Mosquitto: communiquer avec des objets connectés. Mosquitto est un serveur MQTT Open Source (Broker) que l’on peut installer sur un Raspberry Pi (mais également sur d’autres plateformes) pour faciliter la communication entre objets connectés (M2M). Mosquitto est un outil idéal pour intégrer vos objets connectés à un serveur domotique tel que openHAB, Domoticz ou Home Assistant. MQTT (Message Queuing Telemetry Transport) est un protocole de messagerie qui fonctionne sur le principe de souscription / publication qui a été développé à la base pour simplifier la communication entre les machines. Pour fonctionner il faut installer un serveur, qui est désigné par Broker.

Vous pouvez installer votre propre Broker, ce que nous allons faire dans cet article. Vous pouvez l’installer sur quasiment toutes les plateformes dont les plus communes (Windows, Linux, Mac OS X….) mais aussi sur un Raspberry Pi (qui fonctionne sous Linux après tout). QoS0. D’autres fonctions utiles Persistance des messages sur un Topic. CRUD using Spring Data Rest and AngularJS using Spring Boot. In my previous article, I explained how to make crud operations using plain spring restful web services and angularjs with a sample task manager application. That was very simple, yet it had several shortcomings that needed a fix in order to move towards reducing most of the boilerplate code, adhering to the latest methodologies suggested by Spring Framework and to follow better code practices.

It is better late than never. Having mentioned that, the previous implementation will still work and to start with as a beginner, it is a good choice to have a read through it. My sincere thanks to Greg L. Turnquist and Josh Long for helping me to understand the best approach and the way to go forward with Spring Framework. Hibernate - How to create ddl file with spring data and java based configuration? Spring 4 MVC+AngularJS CRUD Example using $http service - WebSystique. This post shows integrating AngularJS with Spring MVC 4. We will create a CRUD application using Spring REST API on back-end and AngularJS encapsulated within plain JSP on front-end, communicating asynchronously with server using $http service.

We will also perform all sorts of validation on UI using AngularJS Form validations. In our application, Client side is based on AngularJS , & server side is based on Spring REST API. This is what our final Application will look like. Live Demo. [Solved] java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener - HowToDoInJava. Spring MVC HelloWorld Using Maven in Eclipse. Java developers often rely on examples to learn Spring framework. Simple examples are often a key learning resource. There are many Spring MVC HelloWorld applications. However, most of them are outdated (do not integrate Maven, use old version of Spring, etc) or not complete (missing key steps or file hierarchy view). Therefore can not lead to a perfectly working Hello World. 1. Introduction — Applications orientées données - Cours CNAM NSY135. Ce document constitue le support du cours NSY135, intitulé “Applications orientées données”, proposé par le département d’informatique du Conservatoire National des Arts et Métiers (Cnam).

Objectifs du cours Le cours a pour objectif de montrer par la pratique comment intégrer les accès aux bases de données relationnelles dans des applications orientées-objet d’envergure développées selon les meilleures pratiques. Il est centré sur les outils dits Object-Relational Mapping (ORM) qui établissement automatiquement une conversion entre les données stockées dans une base relationnelle et les composants (objets) manipulés par les applications informatiques. L’un des plus connus de ces outils est Hibernate, qui sert de base à une grande partie des exemples fournis. Cependant, l’objectif est, au-delà d’un outil particulier, d’expliquer le pourquoi et le comment des outils de type ORM, et de comprendre comment ils s’intègrent à l’architecture générale d’une application complexe.

JAVA

How To Migrate Your Weblogic or WebSphere App to Tomcat. There is no shortage of well-known reasons for wanting to migrate your Java EE web application to open source Tomcat. But without development experience with both your current Java EE application server as well as with Tomcat, it isn’t clear what you must change in your Java EE application to get it to run properly on Tomcat. The benefits of being able to run it on Tomcat are significant — for example, Tomcat is free to run in production, and Tomcat is faster at tasks such as redeployment. Tomcat saves a significant percent of developer productivity time over Java EE app servers (Source: ZeroTurnaround.com) It’s easy to migrate your Java EE app to Tomcat as long as it’s mainly a web container app, and as long as you know what you might need to change in your app’s code to get it running on Tomcat.

For the purposes of this blog, I’ll focus on migrating from Weblogic to Tomcat, and on migrating from WebSphere to Tomcat. For WebSphere 7.0: For WebSphere CE 2.1.x and 2.2.x: For WebSphere 5.1: Migrating Applications From IBM WebSphere to Apache Tomcat. SOAP Webservices in Java Example using Eclipse - JournalDev. Soap Webservices in java can be developed in may ways. We learned about JAX-WS SOAP Web Services in our last tutorial, today we will learn how we can create SOAP web service and it’s client program using Eclipse. Here we will not use JAX-WS, we will be using Apache Axis that is integrated in the Eclipse and provide quick and easy way to transform a application into Java Web Service and create client stubs with test JSP page for testing purpose.

SOAP Webservices in Java I am using Eclipse Mars Release (4.5.0) for this tutorial but I think these steps will work with older versions of eclipse too. Also make sure you have added Apache Tomcat or any other servlet container as server in the Eclipse. EJB 3.2 : Eclipse + Maven 3 + Wildfly 9 (Tutorial 1) – Let's prog! How to configure an EJB 3.2 project using Eclipse, Maven 3, Java 8, and WildFly 9? Settings summary : 2 WildFly instances in the same machine, so this requires fixing offset and node names.Eclipse Mars which requires JDK 8 (but programmers are evilish, they can find million workarounds for it…)Eclipse Mars which requires downloading adapter for WildFly 9Any Eclipse requires pointing on the right Maven 3 installation.