Spring Boot Tutorial - Crash Course

Ever looked for a comprehensive intro to Spring Boot that is fun and entertaining at the same time? Then have a look at this brand-new episode of "Marco Codes": Spring Boot Tutorial [Crash Course].
In this video, we will build a tiny Google Photos-like clone with Spring Boot. Additionally, along the way, you'll learn plenty about Spring's Dependency Injection and MVC frameworks, Validation and File Handling, Spring Data and Databases, and you'll even deploy your application at the end.
► References
jb.gg/lq3xqt
► Timestamps
00:00:00 Intro
00:00:51 Spring Initializr - Overview
00:03:24 Spring Initializr - Dependencies
00:05:36 Which IDE to use
00:06:10 Project Import
00:06:40 Maven Project Structure
00:09:09 Starting the project for the first time
00:10:41 Hello World @RestController
00:14:15 REST API Design
00:15:17 Photoz Model Class
00:16:18 @GetMapping
00:22:28 @DeleteMapping
00:24:11 Browser - HTTP Delete
00:25:10 @PostMapping
00:26:45 Browser - HTTP Post
00:28:13 @RequestBody - Receiving JSON
00:29:33 Validating User Input
00:32:28 Photo Upload
00:37:07 Handling Spring Boot Error Messages
00:38:24 application.properties
00:40:18 Jackson & @JsonIgnore
00:40:45 Photo Download
00:43:15 Dependency Injection - Intro
00:47:09 Dependency Injection - Different Styles
00:48:06 Dependency Injection - Refactorings
00:51:39 Downloading Images
00:57:09 Recommended Project Structure
00:57:57 H2 Database - Intro
01:00:08 Database Schema Creation
01:05:22 Spring Data JDBC - Repositories
01:07:33 Spring Data JDBC - Annotations
01:08:53 Spring Data JDBC - Refactorings
01:13:57 Packaging & Deployment
01:15:58 The End & Next Steps
► Further Reading:
What is Spring Framework? An unorthodox guide - www.marcobehler.com/guides/sp...
Create your first Spring application - www.jetbrains.com/help/idea/y...
► FOLLOW ME
www.marcobehler.com
/ marcobehler

[@damn64770]

Note: if you are using h2 version (2.1.214 ) change the create table statement to below (to avoid errors): create table if not exists photoz ( id INT PRIMARY KEY NOT NULL AUTO_INCREMENT, file_name varchar(255), content_type varchar(255), data binary large object );

[@MarcoCodes]

Thanks for writing it up.

[@maksadnahibhoolna-wc2ef]

@@MarcoCodes can we replace identity with GENERATED ALWAYS AS IDENTITY

[@lukinkoo]

@@MarcoCodes The REFs file for this vid can be edited and ppl are editing it. Pls, could you set it to read-only to preserve?

[@ravenkongnandolasher8418]

Thank you it helps me a lot to finish the project learning

[@tidandan4278]

thank you for help

[@UsaSzerelem]

Live long and reproduce. The world needs more smart people like you. Thank you for this tutorial.

[@Stl71]

I would like to thank you for your tutorials about Maven and Spring. They helped me a lot. Greetings from Greece! Subscribed!

[@walidrashed9075]

Thank you Marco for this amazing tutorial, I learned a lot today, keep it up!

[@CoderGrammer]

Great start Marco. Looking forward to more of your content.

[@libertydaniel6366]

Thank you for the amazing course. can't wait for more.

[@GraySwanSoftware]

Very cool. As an old-school java programmer, this was an exciting and informative look at spring boot (and intelliJ). Good work. I learned a lot and am looking forward to more!

[@trannhatlongdau183]

I love the way you just explained the small details that I hardly find in other tutorials. Thank you so much.

[@hillcountrydev]

Great video. I loved the simple part where you just sent a quick async js function in the dev console instead of Postman or Insomnia etc. Quick and easy! Awesome content and I look forward to more.

[@emiresen546]

Thank you,!!! Very well explained haven't lost my attention for a second.

[@duartelucas8129]

Amazing, Marco! Thank you!

[@adityapanwar1220]

Best video on Spring Boot. I was literally afraid of Spring, but now it seems easy. Of course, I'll practice to get to know more annotations.

[@marouaneghoulami4108]

Friendly crash course, helped me brush my memory a bit. Thank you, we need more heros like you. Plus Ultras :D

[@checkantetibo]

I must say this, you have the ability to explain things in a very simple way... Thumbs up to this channel

[@ozzywiz4979]

Hi Marco, your tutorials are awesome thank you very much for the effort of structuring it. I have shared a Link to your Channel in my university FB Channel and recommended it.

[@user-qy3jb6ot8p]

Man you make spring boot seem easy, man you are a life saviour

[@JoseManuelJimenez1967]

Thanks for your hard work, looking forward for more videos, greetings from Spain!

[@zed8484]

your great marco. very thanks. your language and knowledge is great for us(juniors). please keep it up(security-data-shop website-microservise...) . again very very thanks

[@badripaudel77]

Although I'm comfortable with spring, but it is still worth watching. I'm expecting more advanced and practical tutorials soon 🔜. Loved it

[@briandusenberry5973]

All of your content is just outstanding. Thank you for the work that you put into these videos!

[@MarcoCodes]

I appreciate that!

[@luisferreira5895]

Excelent tutorial, useful and to the point. Thank you!

[@Uvi3112]

my hello world worked!! thanks man!

[@eldi]

Undoubtedly the best guide on youtube for this topic. Keep it up!

[@MarcoCodes]

Thanks, will do!

[@topherreynolds3999]

Thanks man! That was an excellent intro! Peace!

[@tipazas]

Nice & Easy, just as said. Keep it going!

[@tornike3755]

Very well made content. Keep it up!🙌

[@Mohib3]

this is probably the best tutorial to get started with SpringBoot. Thanks! Please continue to upload more

[@MarcoCodes]

That's the plan!

[@TechWorldWithSerdar]

very good tutorial, which explains all the important things briefly, thank you very much

[@albinsanthosh3265]

Thanks for this course. It was helpful.

[@majedulislam96]

Thanks marco This is one of the tutorial for beginners

[@sudhakuppachi2244]

I recently came across your channel. The way you explain is really awesome. Thank you for teaching wonderful way.

[@MarcoCodes]

Thank you for the feedback!

[@vesakk72]

Pure gold! Thank you!

[@jaortiiss]

Marco many thanks for your channel and your effort in general!

[@MarcoCodes]

Many thanks!

[@cut3Shahzad]

Marco ❤️ I found you again. Love to watch your show..

[@df-hh7yd]

Thanks again for the videos Marco!

[@esportsnexus]

It's been couple of days; I've explored your channel & I would like to say. It's really awesome. You're first guy on Java web development who is just awesome. I've watched all these videos you've uploaded. It's awesome, & thanks for helping the Java developers! ❤

[@MarcoCodes]

Thank you, Srikant!

[@akeemovic]

I have the exact same feeling. The videos conver everything you need to get started, he encourages reading documentations and also make you aware of thing to take note of going forward. He's the absolute best!

[@arielcastillo7925]

i saw this video two times and i love it♥

[@asterixcode]

I just wanted to say that you channel is one of the best if not the best when it comes to Java and Spring development. I've been working with Spring and Java for 2 years now and hell yeah, I've just learned so much from you these last days consuming all your content. There are plenty of Spring Boot crash courses out there and I've watched and done couses on that myself, but essencially at the end they are all the same, either using Postman to do the requests or with the same examples and basic return datatypes. Really, it is the first time I see someone teaching Spring calling it directly from the browser and working with base64, byte array and all of that for photos, which is incredible because again, it is always the same thing out there. Thank you so much Marco for innovating and bringing INCREDIBLE value to those who are studying Java and Spring.

[@MarcoCodes]

Thank you for the kind words, Lucas!

[@asterixcode]

@@MarcoCodes You are welcome. Keep the amazing work and you deserve this channel to grow a lot. Vielen Dank aus Brasilien/Denmark.

[@MaxTaylorHayden]

Fantastic course, thanks for you quick guide on spring boot!

[@elvispontes4165]

You are the best web-Java-and-relatedz tutorials KZbinr!!! Please keep uploading this good content... the world is full of people wanting to learn Java for a living in need of tutorials like these.

[@MarcoCodes]

Thanks, Elvis!

[@SaurabhNative]

Really great tutorial. Thanks for making such great, crisp and awesome content.

[@Mnbvc-oc8wv]

Thank for the lesson, it's very understandable and interesting 😍

[@JeanPaulSauve]

I've been scouring the web looking for just this video. Clear, concise, and well explained. I'm using Spring with Kotlin, so I appreciate that you didn't waste our time trying to explain Java as well. So many tutorials, even mid-advanced ones seem to need to explain the basics every time they're shown. Kudos for keeping to the topic! I look forward to seeing more of your Spring content. Thanks!

[@MarcoCodes]

Thanks for the feedback! You can find more of my (written) Spring content here -> www.marcobehler.com/guides/spring-framework

[@veliamomo6561]

fav java spring course, 10 mins to restful controller no bs

[@gpnraj2684]

Excellent course ..thank you for the course

[@azamatabdullaev4580]

Thanks, the best Spring crash course I've seen

[@MarcoCodes]

Thanks!

[@MarcMagix]

By far the best Tutorial on this topic :)

[@MarcoCodes]

thank you :)

[@philliplima4999]

Exceptional. I've learned so much with this course

[@MarcoCodes]

Happy to hear that!

[@aalFarhad]

You are amazing. Well done. And, please keep up the good work.

[@MarcoCodes]

Thank you! Will do!

[@michelchaghoury9629]

i subscribed but what i am expecting is that there will be other vids like this great one, thank you and keep going

[@MarcoCodes]

That's the plan!

[@facu454]

I would like to see "spring security nice and easily" at this moment. It's so hard for newbies. Thanks a lot Marco for this type of content

[@MarcoCodes]

You're welcome. Yep, Spring Security is tough for anyone, but unfortunately I won't have the time in the near future to record something about it, though this should help: www.marcobehler.com/guides/spring-security

[@tanya66tanya]

@@MarcoCodes Is their any article that implements spring security without WebSecurityConfigurerAdapter because it is depreciated now and every article is with the deprecated package only. I have tried without the ConfigurerAdapter extension but there are some things I don't understand it would be very helpful if you could point out those errors 🙂

[@BruceYangtek]

Great tutorial, thank you!

[@akrm3240]

Thank you! That was super helpful...

[@halilkose9602]

Thank you Marco :)

[@xychromosome6510]

keep up, nice work. more videos please. subscribed.

[@_nav_in]

Hi hello you have done a awesome job in teaching us. please do more videos regarding SPRINGBOOT and other java related stuffs.

[@yohannestz9893]

I appreciate other creators but your video makes it seem really easy. I liked it!

[@MarcoCodes]

Glad you liked it!

[@MrRetr1]

love it Keep it up ! same as Maven tutorial, super well done and ez to understand :) TY again and keep it up !!!!

[@MarcoCodes]

Thank you!

[@elliotsaii7904]

very good explanation, waiting for spring boot master v:3

[@sovrinfo]

Thanks you a lot. Very Cool. Please continue!

[@arnay07]

thank you man that was just an amazing tutorial have helped me so much

[@MarcoCodes]

You're welcome!

[@paulthomas1052]

Great tutorial - full of useful tips and tricks, Thanks,

[@MarcoCodes]

Glad you enjoyed it!

[@chalu24]

Great video.. looking for more projects..

[@marchevka22x]

Thank you for the very good videos ... There is much about photos, and their formats, in this tutorial, which I am not fully familiar with. I would think a similar video using an object (a Plain Old Java Object or "POJO" such as a Person, Student or Book) would be a good learning example.

[@AngryNevzat]

awesome video, thanks a lot!

[@Pest87]

Awesome clip :)

[@Videoorchard]

Please make a part 2. Please I am begging you. This is gold content

[@MarcoCodes]

Anything specific you'd like to see in that part?

[@Videoorchard]

​@@MarcoCodes Yes, how JWT can be implemented with REST ap and writing more complex rest endpoints with multiple input parameters such as /org/{department_id}/{message_id}

[@Videoorchard]

I am finding it hard to find your contents on this

[@ZandorDaysev]

Oh sweet god! This is the best and the most understandable tutorial for spring boot. Among other great things, you don't treat your viewer as a complete numbskull in need of hand holding. Just the pure: "Here how it is done"

[@MarcoCodes]

Thank you for those words!

[@Andrianodna]

You're single-handedly taking care of my php laravel to java career transition lol. If i had money to spare right now, i'd buy your courses... Maybe the next year :p Thanks for the great material!

[@MarcoCodes]

Good luck with the transition!

[@lukinkoo]

Why are you doing the transition if I may ask?

[@normandrental2695]

Thank you very much!!🎉❤

[@GenericT]

Awesome video tutorial. Could you create course about testing and micro service architecture. Thank you 👍

[@Kevin-gr5rs]

Here before this channel blows up

[@gera.v.v]

Marco, you cool! need some videos about kafka basics, and jenkins basics.

[@Mohamed-uf5jh]

Great video

[@kwarnkham3836]

Love the video

[@yuriiperepletchikov3233]

It's brilliant

[@StarContract]

Giga Chad tutorial bro

[@MarcoCodes]

Not 100% sure what "Giga Chad" is, but I'll take it :D

[@sukhjattana5887]

ultimate !!!

[@pranavmahajan4190]

Thanks so much. Its wonderful. I did it and it worked really well. Can you please do such small projects that cover different aspects of springboot?

[@MarcoCodes]

Thanks! As for pet projects, that's essentially what my kzbin.info?app=desktop&list=PLIRBoI92yMalMpixA5pFYLgCyCp1s3zxd series is for!

[@pranavmahajan4190]

@@MarcoCodes- Thanks for your response. I will check out the link you shared.

[@harambetidepod1451]

Thank you sir

[@techmanam9097]

You are VERY good!

[@MarcoCodes]

Thank you very much!

[@monotroupe6294]

Please make spring security crash course. Would love to see more of your vids.....

[@MarcoCodes]

As an alternative, this is as good as it gets: www.marcobehler.com/guides/spring-security

[@himangsusarkar6737]

Thanks a lot, dear sir. This video is really helpful to me. The last few days I found a spring boot easy tutorial. And That's it. Thanks again

[@giovannidefranceschi2930]

better than a semester of web services at the university

[@neigroove]

Excelent tutorial. Hey What's the magic with Spring Data? You just created some interface and extended CrudRepository without any implementation and got CRUD operations? Wow!

[@MarcoCodes]

Yep, Spring will essentially create a proxy implementation for that interface, on the fly. I'll see when I can cover Spring Data!

[@leovalde7z]

This is excellent! Should I complete this and then take your confident spring course? or vice versa

[@MarcoCodes]

This one first, then Confident Spring.

[@marchevka22x]

I'm getting used to having "models" (aka the objects such as a Photo or a Person), along with Controllers, Service and Repository (database, DAO, or entity) layers. As an introductory video I would explain more about this design choice. It seems very common.

[@marchevka22x]

Thank you for the very good videos ... any thoughts on WHEN to have multiple @RestControllers?? You have both a PhotozController and a DownloadController. Is this common? If you had a DB with 5 tables (such as student, book, etc.) related to 5 plain old java objects (POJOs) would you normally have a different controller for each?

[@didiervanos2696]

I would consider it suitable in this case to have the download function inside the photos controller, after all it's a photo you're downloading, and the api endpoint should probably indicate that (not just a generic /download endpoint, perhaps /photo-download). But yes, multiple RestControllers (or any controllers) in one application are common. You want there to be strong cohesion (relatedness) between the functions inside any one controller, and less cohesion between different controllers. Since you're performing CRUD on a photo database, it makes sense to group them into one controller. But if you're performing CRUD on a user database, even if they are users who may have photos in the photos db, there's less cohesion and it should go in its own controller

[@manoharlakhineni7937]

Amazing course could you make a video on spring security

[@MarcoCodes]

Here you go: (not a course, but should be a good start) www.marcobehler.com/guides/spring-security

[@ClashRoyaleAtman1]

Excellent stuff..can you post a video of securing call between microservices . Https connections .public private key, ssl handshake , cert renewal etc.

[@MarcoCodes]

I'll add those ideas to my backlog, thanks!

[@fhornet3123]

Peach of a vid

[@tanya66tanya]

hey I know the basics of spring but I want to learn the advance of it can you make a descriptive video of it mainly the annotations and whatever you feel is is important as per industry standards . It would be helpful to many of us, Thanks

[@MarcoCodes]

Anything in particular that you don't understand/want to learn more about? There's plenty of annotations :)

[@tanya66tanya]

yes while creating a Rest API in the rest controller class we use annotations for logging and using swagger annotations like @ApiResponses,@Operations. Your videos are great btw. It will be very helpful if you make a video of spring security with jwt token and using a database and creating roles in the database and fetching it and assigning the role user in userRegister Api and role admin to the adminRegister api I am trying but every time I implement it there is some error sometimes the roles are not in the token sometime I can access the restricted api without sending the token. Thanks for taking your time out and replying above 😀

[@Abhi-uj7gf]

Pls come with more tutorials on Spring boot

[@MarcoCodes]

What topics would you like to see covered?

[@Abhi-uj7gf]

@@MarcoCodes I love the way u explain the topics indepth. Would like to hear more on Spring bean ( what is a sping Bean , why we use that, scopes of bean , bean life cycle etc ), Spring AOP ( What is AOP, why we use it, Diff bw AOP and Webflux), Imp Spring annotations, Spring security.. any topic is fine but would like to learn answers for following questions at the beginning of video as you explain always. What it is ? What problem does it solve ? Or Why it came into picture ? How it works ?

[@MarcoCodes]

Thanks. I'll see what I can do.

[@tavoochoa100]

dude, you go so fast

[@richardfrimpong5891]

I love how Marco just googled for a solution when he got the file size limit error. He shows typical programming as it is. Not perfect programming like how some other tutorial shows

[@marchevka22x]

Another suggestion for this subject: I know that Spring Boot provides me an "inititializer". By selecting options in the initializer I am able to create a project ... once created this video shows writing code, creating a database and organizing the code into layers (RestController, Service, Repository). Can you explain what the initializer did? I've heard that without Spring Boot there is much work that needs to be done - say 2 weeks worth?? - and that Spring Boot provides "opinionated" setup files. What type of extra work would be incurred without Spring Boot? How long would this take? Couldn't you do the same setup relatively quickly by choosing the appropriate Eclipse/IntelliJ project setup? What are some of the opinionated setup files?

[@MarcoCodes]

Hi there! Many questions/suggestions for this topic. I can't answer all of them, but I would redirect you to two of my blog posts which many people found helpful: www.marcobehler.com/guides/spring-framework www.marcobehler.com/guides/spring-boot-autoconfiguration

[@wahajmubeen9376]

In ref (for PostMapping), its "filename" while you are using camel case in tutorial as "fileName", so if anyone still gets null it might be bcz of this.

[@MarcoCodes]

Fixed.

[@m3hdim3hdi]

31:23 how did you get that list of validation annotations?

[@MarcoCodes]

There is that tiny button I clicked one second earlier

[@imranif3899]

Hello, thanks for the magnificent tutorial! However, I am facing an issue while importing the Maven project. IntelliJ gives me "Use Maven wrapper is not correct maven home, reverting to embedded" instead. How can I fix this issue? Help will be appreciated:)

[@MarcoCodes]

Could you paste the full error message? In fact, even with embedded Maven it should work just fine. Does it work on the command line, i.e. when you do a "mvnw compile"?

[@TheBadFred]

On 48:14 is the photozService the usual Sigleton or a Prototyp?

[@MarcoCodes]

Singleton.

[@TheBadFred]

@@MarcoCodesLast Time I used Spring, I "wired" my beans with XML, still better than J2EE.