I've got the basic idea of, what both of them are and when they can be used. I've already referred to this question as well. As of now what I understood was:
Spring Boot bundles a war file with server runtime like Tomcat. This allows easy distribution and deployment of web applications. As the industry is moving towards container based deployments, Spring Boot is useful in this context.
Spring MVC is a traditional web application framework that helps you to build web applications.
What I wanted to know is that, what can be the best practice when it comes to web applications and the differences of using either one of them in depth. Any help would be appreciated.
Related
I want to know what spring dependencies should I use on my website to make the work easy and spring or spring boot which one is better. also, suggest some frontend technologies that I can use to make the website smart.
It's a very broad question. And it all depends on what features you want in your web site. Just listing few basic module to give you some hints.
Spring MVC - For web application with MVC Pattern
Spring Security - To secure your app
Spring ORM - If using any ORM tool like hibernate
You need to explore more on the basis of your need.
Spring Boot vs Spring:
You should use Spring Boot if you are starting new project. Spring Boot came to make development process easier when using Spring Framework. In Spring, developer had to write lots of code to configure beans and dependencies. Spring Boot automated this process so that you no longer do it by yourself but Spring Boot will take care of it. Plus it provides some extra tools (In built Web Server, in Memory DB, tool to monitor and manage Spring Boot App )
Try to create a simple web app in Spring and Spring Boot to understand the difference.
Front-end Technologies:
JavaScript based framework/lib like Angular,React,Vue etc. are the trend for front-end now a days. Again there are pros and cons of each of them. Hence you need to evaluate, what suits you better as per your requirement.
My team currently has an old JSF 1.1 / Spring2 / Weblogic Monolith Application. As we start towards modernizing our application they want us to take our current architecture, as is, and basically shoe horn it into Spring Boot.
We aren't talking about breaking it down into micro-services at this point, but basically a lift from our current setup, taking Weblogic out of the picture, and running it in Spring Boot with Hikari Data Sources.
Can this be easily done? I haven't found a way to do it without extensive code changes and I don't mind suggesting a "Lets break it down into a micro-services in the next Product Increment" approach.
Outside of re-architecting our application (as we plan in the future) or doing quite a lot of code change, are there any other options?
If you do not use JavaEE for Weblogic, you can migrate your application to the Spring Boot easy enough. The main thing is the correct import of configuration, components, resources and properties. See: example.
If you used in your legacy project JPA or even JDBC to rewrite backend to Spring Data is not very difficult.
From my point of view the main difficulty is the JSF version you are using. I would refuse it, because: 1) it is not fully compatible with Spring boot and 2) it is already out of date today. It takes a lot of effort to put it into the Spring Boot and still it will not work completely. If there is no time and resources to change this view technology to another, you will have to finish it to Spring Boot.
I don't see other real alternatives
I have a set of projects in Spring framework and I have to Find the ones which can be converted to Spring boot.
Is there anything that is related to Spring framework and cannot be converted to spring boot ? In my research, I Could not Find something like that.
But does anyone know something, like a dependency, which would force the project to stay in Spring framework ?
Spring Boot uses the Spring Framework as a foundation and improvises on it. It simplifies Spring dependencies and runs applications straight from a command line. Spring Boot provides several features to help manage enterprise applications easily. Spring Boot is not a replacement for the Spring, but it’s a tool for working faster and easier on Spring applications. It simplifies much of the architecture by adding a layer that helps automate configuration and deployment while making it easier to add new features.
Most of the changes for migrating Spring Framework application to Spring Boot are related to configurations.This migration will have minimal impact on the application code or other custom components.Spring Boot brings a number of advantages to the development.
It simplifies Spring dependencies by taking the opinionated view.
Spring Boot provides a preconfigured set of technologies/framework to reduces error-prone configuration so we as a developer focused on building our business logic and not thinking of project setup.
You really don’t need those big XML configurations for your project.
Embed Tomcat, Jetty or Undertow directly.
Provide opinionated Maven POM to simplify your configurations.
Application metrics and health check using actuator module.
Externalization of the configuration files.
Good to refer this for migrating from Spring to Spring Boot application: https://www.javadevjournal.com/spring-boot/migrating-from-spring-to-spring-boot/
As part of a new web application project, I'm planning to learn Spring. I started to read through the Spring framework reference. While I was googling, I came across Spring boot. What I understood is that spring boot helps to build application much faster than spring by reducing configuration. Now I'm little confused whether should I continue learning spring or jump to spring boot. My intention is to understand how spring works as a framework rather than a few features. So please let me know, as a beginner what should I do? First, learn Spring and then spring boot or vice-versa.
Update
Ok, I know it's a while since I asked this question. I kind of have an answer (personal one)
I started with Spring Boot and so far built one Spring Boot REST application. Yes, as others said, Spring Boot, helps you to get started quickly and being new to some language/technology, I would love to see a working module ASAP. So Spring boot helps you with that.
Later depending on your interest, you can start exploring in-depth how Spring boot does that magic.
So, in summary, go with Spring Boot and then deep dive to understand the underlying concept. Again this is my opinion.
Thanks, everyone for your inputs/suggestions.
If you want to develop web applications especially micro-services, I will recommend that you should learn Spring Boot first.
The first reason is that there are many resources and examples on
web, so you can easily find what you need.
The second reason is that Spring Framework (including Spring Boot) is
suitable for PaaS environment especially Pivotal. Therefore you can
rapidly deploy your applications without too much effort.
First of all, learn how Spring applications work.
Spring applications are based on the Object Relation Model. You need to understand the annotations and why we use them. Then you have to learn how Spring MVC works. Up to here, both Spring and Spring Boot are similar. Basically, Spring Boot is made so that a Spring-based application can be made very easily. Spring Boot is very good framework for the Web and other.
After learning the above things, then you can jump easily onto Spring Boot. However, if you jump directly to Spring Boot you will see there are many such things which are not described in the Spring Boot tutorials, since many of them expect that you have some prior knowledge of Spring.
first of all: that might be a newbie question. However after few searches I cannot find anything that would bring me further.
Basically what would be the reasons to choose an app server over a Spring framework to develop a medium complex web application? I am fairly new to Spring, did some hard core WebSphere for few years. While reading about Spring I see that it comes with a good bunch of features (transactions, persistence, messaging, connectors etc). Is Spring hard to scale or manage in a clustered environment?
Any comments welcome.
Thanks
Spring is awesome.
Your terminology is way off though. Spring is a Framework. It's a library that you use to write a web application.
An app Server is what your application runs in. You need both. For example, use the Spring Framework to create an app that runs in the Tomcat app server.
EAR files aren't a requirement for doing Java EE development.
It's not either/or: if you deploy a Java EE application you need a container of some kind.
I've deployed Spring apps on Tomcat and WebLogic. I think WebLogic is the best Java EE app server on the market. My decision about whether to deploy to it or not would be based strictly on availability.
You've seen that Spring has their own Java EE container now. It forks Tomcat and marries it with OSGi and Spring. I haven't tried it yet, but if the quality is similar to their framework it will be very promising indeed.
Are you really asking "When would I write an application using Spring? When should I choose EJB3?"
My preference these days is Spring. I can do persistence, transactions, messaging, web services, and everything else I need.
Bpapa,
you got me there, yes the terminology is wrong. I meant Spring + web container vs. App Servers. Surely the web app has to be deployed somewhere. I guess that shifts the question to the server side features as per my first post.
Topology example: Spring + Tomcat vs. WebSphere.
As a side note: people argue if Tomcat is an app server, many consider it rather a web container. You could not deploy an EAR file to Tomcat, can you? All it takes is a WAR, am I right? But that gets too academic.
Thanks a lot
Rod Johnson's "Expert 1:1 Java EE Development Without EJBs" is the basis for Spring. It's an excellent book, but I'd say it's a bit out of date now. The book was written with EJB2 in mind. It was published before Spring became an open source project. The framework is up to version 3.0 now, so I'd say that the book is of historical interest only. I'd recommend a more modern take on the question that takes Spring 3.0 and EJB3 into account.
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