we have old tomcat application in our project. I like to change it to spring boot for easing my development. but I don't know the way. Will someone helps me out, how to do that
Actually they are two different things.
You can have a Tomcat server with Spring Boot framework.
If you want to get this server setted with Spring Boot, just get a look in this link:
https://www.baeldung.com/spring-boot-configure-tomcat
Related
I have a web application NOT implemented on Spring Boot or Spring itself. It has no Spring whatsoever, it was made using RESTEasy running on Tomcat.
I'm supposed to add ADFS authentication to this web application through the use of Spring's Security SAML Extension.
I've seen a lot of projects online that implement this feature but all of them use Spring Boot or run on Spring. At the same time I've seen mentions of being able to implement Spring SAML without having a Spring project. So I'm a little confused now.
Is this feat achievable?
If so, could you guide me on how to do it?
Which Maven dependencies do I need exactly?
Which web.xml configs do I need?
Which Beans do I need to implement?
Thank you in advance.
As I can see the there is the org.springframework.test.context.junit4.rules.SpringClassRule that is a ClassRule's equivalent to the org.springframework.test.context.junit4.SpringJUnit4ClassRunner.
However, I'd like to boot up my whole Spring Boot application with a ClassRule. Is there something like org.springframework.boot.test.contextSpringBootTest as a ClassRule?
There is a GitHub project that solves this issue: https://github.com/CarloWakefield/spring-boot-test-rule
I would like to create a Spring Boot application to be deployed on Google AppEngine infrastructure. GAE currently only supports servlet 2.5 web applications.
Is it possible to use Spring Boot - using auto-configuration - in combination with a old-fashioned web.xml?
Can I for example use a contextClass/contextConfigLocation pointing to a #Configration class including #EnableAutoConfiguration?
All Spring Boot examples seem to use a simple Application class with main method to run the application. So I would like to know if Spring Boot supports using a web.xml as start point to boot the application?
More than one question there:
There's nothing stopping you from using web.xml (it's still part of the Servlet spec). Most people prefer the Java initializers these days.
#EnableAutoConfiguration works for any application context (it just uses features of Spring).
But Spring Boot out of the box doesn't have a ContextLoaderListener that knows about SpringApplication, so you miss some of the benefits of Boot if you do as you describe. There's one you might find useful here.
Spring Boot Actuator relies on a few Servlet 3.0 features here and there so you need workarounds for a 2.5 environment (see this spring-boot-legacy prototype for details).
There's a sample app here that runs on GAE, currently deployed here: http://dsyerboot.appspot.com/.
I want to use spring's dependency injection for now(other core functionalites later maybe) in tomcat application.
I want to set up spring 2.5.5 in tomcat7, But don't have clarity on how to do this.
Specifically I am confused because I don't know whether to use Spring MVC or use just spring in tomcat.
I found this question helpful: Tomcat with Spring, But still didn't get the whole scenario on how to setup tomcat with spring.
You can do either, using just core spring with tomcat is fine. MVC provides additional functionality.
Take a look at the spring source examples on github, and read their docs.
(BTW I thouroughy spring-MVC component - it really saves time developing webapps)
For a pet project I would like to have an embedded Jetty run a Spring Web MVC app. I've used Spring in web containers (where it's easy to tell "where to start") and I've used embedded Jetty without Spring.
It feels a bit like the chicken or the egg problem if I want both to work together. What is the best way to organize the project? In other words, what shall I put in main()? Should it be a Spring app that happens to have Jetty as a bean (what about contexts then?)? Or should I start Jetty alone and plug Spring in via servlet listener? What are the caveats?
Jetty in a Spring container is used to start webapp, springified or not. The webapp and your webapp don't have the same Spring context without tricks.
So, you have to create a Jetty server in your main, add your webapp and start the server. The best way is using a web.xml like a common Java EE server, and add this descriptor to your Jetty server.
I think it is more reasonable to start Jetty alone and plug Spring in via servlet listener in web.xml. Let Spring manager all the app specific beans and let jetty focus on running your app, and maybe some day you can deploy you app to antoher servlet container without changing anything.
This is one way to embed Jetty in Spring
http://www.springbyexample.org/examples/embedded-spring-web-services.html