Create a Spring Boot Application Using Multiple Maven Modules [Intermediate Spring Boot]

[@BuddikaKularathna]

This is the most concise tutorial I ever seen regarding generating multi module maven project.

[@RomanianCoder]

Hello and thank you very much! I am really glad when my courses are helping others. Also, if you have any more feedback or course topics, please let me know.

[@tianshiliao5372]

Well organized and presented. By far the best lecture i've ever seen on youtube regarding spring boot. keep it up

[@magadiflo-dev]

Thank you for sharing your knowledge, it is very valuable, especially since it is focused on a real field of how companies work, thank you very much 😄

[@domenicosannino4164]

Congratulations these tutorials are very clear, and done professionally, it is a pleasure to follow them

[@zombieloffe]

Great tutorial, really good job explaining the new features for different spring and intellij versions. Keep up the good work!

[@iAbhinavSinghal]

Thanks a lot for the video. I had been trying to do so for a long time now. But Always felt short on a few steps and leave the process all together. Your video helped me to stitch all the pieces together. Cheers.

[@adamkalisz7317]

Very helpful and simple to understand, thank you!

[@박충희-u9o]

Clear tutorial! I solved all my blocked issue after watch this video.

[@Mohamed-uf5jh]

Thanks Romanian, you explain absolutly good, and perfect example

[@IraqAllFor]

RC this is a very good video, got to it at the right moment. Please continue with the same style for future vids. I have custom auth spring security module and trying to incorporate with my REST module. WIll follow the similar path to see if I can make it work

[@trapmusic9014]

This was really fantastic lecture. Thanks for your efforts and knowledge sharing !! Please create the project describing all the modules of Spring like AOP, JPA, REST Api, Security, Microservices within the same.

[@pravinabhale4724]

Thank You, Romanian, for your neat and nice explanation. It really helps us in building a scalable application. Thank you once again.

[@aminkamal3938]

Thank for this demo. It helped me a lot for an ongoing project

[@RomanianCoder]

Hello, Amin! Very glad to hear it :)

[@basheeral-momani2032]

thanks a lot mr Romanian Coder for this awesome tutorial, it's my pleasure to subscribe to your awesome channel

[@ent.subirsaha]

Very Good Tutorial. You have explained it very well. Thanks :) Question: Say you have a multi module maven project with different services like auth-server and resource-server. Both of these services are running with different context and different port. So, how do we ask spring-boot to start both of these services with a single SpringBootServletInitializer.

[@RomanianCoder]

Hello! I think it is more a matter of operations. Each service will be a jar file, which you can start with java - jar command. Also, if you need orchestration, you cohld consider docker and kubernetes.

[@AkshaySinghi]

Thanks Man great video. But one question how should i create an maven pom project (Parent module) in Spring tool suite

[@RomanianCoder]

Hello and thank you for the comment! I never worked with STS, but I guess the approach should be the same. All you need to do is write the appropiate pom files. The IDE should not matter that much.

[@nayanarora6827]

Thank you so much for this wonderful tutorial. Just wondering why running mvn clean install command fails on the persistence project?

[@raymondmouthaan6335]

Thank you, very nice to follow your tutorials!

[@meghan1798]

Thanks for this amazing tutorial, the explanation was quite pellucid , really appreciate your efforts!!

[@RomanianCoder]

Thank you very much:) Can i ask you what other courses would make this channel even more helpful?

[@kaidobit6954]

is there a need for the web dependency in the POM outside of the modules? did you move the spring-boot-plugin from the outside-modules-POM to web-module because web-module is the entrypoint into your application? because the documentation says its used to package a jar/war, but since all of those modules will be packaged into their own jars and these get combined into a war wouldnt it make sense to use the spring-boot-plugin in every POM or how do they know how to be packaged?

[@dmitrymaur7186]

Your videos are really awesome. I look forward to your new videos=) Ty.

[@RomanianCoder]

Thank you very much, Dmitry! I appreciate it;)

[@revanthmadishetty3730]

Hi Romanian , that was very nice tutorial . now how to register all this module of the project in eureka Service? please let me know the link if u already made a video on it or make a video for it please

[@RomanianCoder]

Hello! Thatnk you very much for the message. Unfortunately, I don't have xp with eureka, so I don't think I will make videos on this :(

[@rabinawal76]

Time 16:25 (DbSeeder.java) gives me compile time error Inferred type 'S' for type parameter 'S' is not within its bound; should extends rc.domain.Hotel. How do we fix this issue? I used saveAll(hotels) instead of save(hotels) to get ri of it. Is it good solution?

[@apamuce]

Thanks for superb tutorial! I am curious if you need to consume the REST service with a some scalable futureproof UI what would you do: create another module or implement it in web

[@RomanianCoder]

Hello and thank you for the positove comment. When it comes to ui i would probably go for a whole new app. (angular/react/vue for web, javafx for desktop). I think it is better to keep the ui completely independent of the rest api and business logic.

[@apamuce]

@@RomanianCoder Agree on that, but actualy i miss to clarify my thoughts: a stand alone self independant, autorunnable fat jar app with embeded tomcat. But yes you are absolutely right it must be kept independent.

[@sagar-uf9hi]

how to run if i already have the existing 2 projects and has their own endpoints ,i want to run them on a same port and access their original endpoints and also different dbs

[@adityamajety8711]

Good stuff and Well explained. Thankyou RC!

[@RomanianCoder]

Hello! I am really glad that you found the tutorial useful;)

[@anushilsharma9777]

Very good RC, best wishes.

[@way2arvind]

thanks for such a good tutorial, it's really easy to understand.

[@360Legion]

Hi Sir. I found your video very helpful. I got a question. Instead of EntityScan can we have @ComponentScan and specify the base packages there?

[@RomanianCoder]

Hello! As far as I know @EntityScan is not the same as @ComponentScan. Entities are needed for JPA implementations. They are bot beans that get injected.

[@nelsonoliveira4976]

Great tutorial. can you show one project with modular monolithic using spring ?

[@oleksandr3275]

Thank you so much. I enjoyed listening and watching your video tutorial !

[@MrProfeDNY]

Can you do a tutorial on how to integrate this same project with CircleCI?

[@RomanianCoder]

Hello! Unfortunately, I do not have xp with circle ci, so I can not do a video on this topic :(

[@ismaeldomingosjunior185]

simple and objective, congratulations!

[@andreialexandru7027]

Great! Thank you very much! Keep up the good work :)

[@BobbyFu]

Hi Romanian Coder, can you create the same Spring Boot projects using multiple Gradle modules? I'm having problems creating this project. Thanks.

[@vanilsondonascimentodoming9795]

hi can you please help me ...i would like to know how can i create an instance of one webserve to other webserver in spring framework .in this case (wbserve 1 to webserve 2)???

[@Pumazr]

im getting this error "Cannot determine embedded database driver class for database type NONE" im trying to work with postgres and JPA . i have the application.properties file in resources folder (web project ) but doesnt work, can you please help me?

[@麻贵海]

Thank you very much, I have solved a question I have always had.

[@RomanianCoder]

I am happy yo hear this :D Thank you for the comment.

[@khayalian]

Hello Romanian, thanks for the deep explanation on how to build multimodel spring, but I'm having a problem, with Whitelabel Error Page, I'm using boot, controller in the web section, with a configuration in the properties, the controller working fine but the web site address , under WEb-INF returning Whitelabel Error Page, is there any explanation or tutorials that can help understand thanks

[@klaudiasocha8404]

Awesome Tutorial, but I still have a question, how do I make @RequestMapping ("/ hotels / {id}")?

[@RomanianCoder]

Hey, Klaudia! Thank you very much for the feedback:) There is a method on the MongoRepository interface called findOne or findOneById. You could use it to achieve what you want.

[@klaudiasocha8404]

Thanks, you helped me a lot. :)

[@chaosknn3885]

Thank you very much! This is the very video I want.

[@RomanianCoder]

Hello Chao! I am really happy that it was useful to you!

[@Sam-iv7ml]

Very good tutorial...is there a book where i can learn more about it

[@hablahei1]

Great tutorial!

[@ray5843]

I have a question, how to config unit testing in DataAccess module and BizLogic module?

[@muradsatimov155]

Hi very good tutorial. Thanks. I want to put database connection settings in domain module "application.properties" file. I tried but no result

[@RomanianCoder]

Hey! The application.properties file are picked up from the executing module (not the domain one). You should try to place them there. I believe this is the reason why they are not picked up. Thanks a lot for the positive feedback ;)

[@nikosc]

yes, but how do you do integration testing on modules separately?

[@RomanianCoder]

Hi, Nikos. Well, integration testing means to check your whole app. So, if you start at the main module (the one which fires up the SpringBoot app), you can add integration tests. The main module knows about the rest, so visibility os not an issue. Use the SpringRunner to benefit from CDI and mock specific portions of the app. If you search the web for spring boot integration testing you'll see plenty of hands on examples ;)

[@thiagomatar7942]

Thks guy, awesome tutorial

[@harishpathipati7197]

This is cool and neat. Thanks man

[@hatemkhlifi6367]

Sir, you are perfect. Think you.

[@anandathakur4937]

If I run from intellij my latest changes are not reflecting each time I need to do clean install. Any idea

[@franciscorobsondeoliveirad7023]

Thanks to share this content!

[@DavidMwangikamau]

This is well done. Thank you!

[@npggreat]

Thank you so much, this was very helpful a lot of questions got cleared, I wanted to ask if you can redirect me where I can read all this stuff and learn more about Why&How Spring configuration. a request if you can please make a detailed tutorial about Maven and explain Maven Repositories, Dependency Management and choosing correct Scope for dependencies.

[@ovlety]

hI Romanian Coder, what do u think about if is possible to have this type applicaction for example: one Module for Supplier, other Module for Customer, other for Security etc, i mean to say is good idea to have some like difrent Modules in large scale app? excelent all your videos, i follow

[@RomanianCoder]

I think it's a good oractice to split a compkex app into well defined modules that model a single concept;) Practice will let you know the size of the modules, so don't be afraid to experiment. Thanks a lot for tge comment :)

[@ovlety]

@@RomanianCoder yes experiment is the best to have experience and clear concepts, thanks great job!

[@umeshchavan8215]

Hello can we get it done by using java 9 modular approach in springboot application?

[@keycuevasm]

Genial! Buen video 👍🏼

[@bhupeshkumar8085]

Hello,I did everything according to instructions but I am getting error that RC.web does not exist.

[@spomprt]

Thank you, this video strongly helped me!

[@AliAsad-cr5bc]

Very helpful. Thank you!

[@MarcinMarczyk89]

in which module should i put services?

[@rabinawal76]

When two micro-services interact then sometimes they have same domain objects for communication., so there is a duplicacy of code. How can we avoid same domain object in 2 microservices using this multi module approach ?

[@SohailKhan-gu2du]

Hey man.... U r very knowledgeable.. Can u create some. Complex apps... Using spring boot.. Kafka.. Multi threading n all.... Like handling huge traffics of request... Apart from this simple crud apps

[@ertogrulselimli3139]

Sorry for this but i should correct your mistake ,instead of putting spring-boot-maven-plugin in the parent pom,You should put in only starter project,because ,other projects intherits it from root and when there is no starter class maven gives error

[@RomanianCoder]

Thank you for the feedback. I always learn something new :)

[@ertogrulselimli3139]

Thank you too,Actually there are many ways of creating multimodule project for Spring boot,Spring Roo has its great shell command for this, try check it

[@amabentil920]

Thank you very much

[@831Sakura]

Why I got error on this.productRepository.save(products); "Inferred type 'S' for type parameter 'S' is not within its bound."?

[@BobbyFu]

If you're using Spring Boot 2.0 version, use this.productRepository.saveAll(products) method.

[@ayoshebby5118]

Would you call this microservice style development?

[@mnsnows]

Thanks for the video is usefull and explanation is really nice. Thanks for share

[@roronoa_d_law1075]

21:44 we don't see the errors :D

[@rajsekarm2001]

Hi RC, I want to create a war file out of this project and need to place this war inside tomcat. Please explain what all changes i have to make to get war file out of it and place it in tomcat server. Regards, Rajasekar M

[@RomanianCoder]

Hello, You can check out my video on how to deploy spring boot apps on tomcat, as war ;)

[@roronoa_d_law1075]

what if the root module is not the web module ?

[@hopskiprepeat]

Thank you very much!

[@axelrod4840]

How to test different modules?)

[@hareeshkumargoli6638]

What is the custom URL sir ?

[@MrTalJacob]

Helped me soooo much!!! wowww!!!

[@ArvindVerma-ct7oq]

Great Video thanks a lot

[@yhjhoo1986]

Resolved my 2 days problem

[@feliperosa1885]

Good content :)

[@chenhaihu6893]

Can we have one annotation @ComponentScan for everything?

[@kennylaw6103]

Probably not. I used @ComponentScan(basePackages="rc") only and saw the same error saying "a bean of type 'rc.persistence.HotelRepository' that could not be found".

[@ilyailyukou7895]

thank you

[@lts8683]

thanks you

[@enmanuelrodriguezpaz7445]

Thank you