Exception Handling in Spring Boot REST API Explained With Demonstration

Let us learn how to do Exception Handling in Spring Boot REST API application. In this session we will learn what is exception handling in spring boot rest api java application, how to handle exceptions in rest api spring boot project, why exception handling is important with detailed demonstration of CloudVendorAPI application. Key annotations which are used in this tutorial are @ControllerAdvice , @ExceptionHandler , @ResponseEntity and more. This is a fully hands-on spring boot session with example. Here a complete flow of exception handling is made and then tested with Postman tool. HttpStatus , Throwable , Error message , RunTime exception , Exception Constructor , Exception Handler , Exception Controller, Global Exception , Custom Exception , and all the steps to create and handle java spring boot rest api exceptions are explained and demonstrated in detail in this course. Default Data exchange format is used is JSON. Http Status 500 and Http Status 404 is used in this session.
Some important points of this session -
@SpringBootApplication as starter
Exception handling is essential for small to large applications.
APIs must have exceptions handled properly for giving proper response back to client.
@ControllerAdvice
@ExceptionHandler
All the steps for handling exceptions are demonstrated in this tutorial. Creating Exception class, creating exception handler class, creating exception controller , creating RunTime exception and finally throwing exception from service layer is explained and demonstrated in thi session.
I will highly recommend to watch the complete session to get the complete benefit from this course.
Link for 1st Spring Boot session -
• Java REST API with Spr...
Link for 2nd Spring Boot session -
• Creating Java REST API...
Playlist for Spring Boot How To tutorial is -
• Spring Boot REST API C...
Playlist for Java features -
• Java 8 Features Explan...
GitHub link for CloudVendorApi code -
github.com/thinkconstructive/...
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See you in the next video 😊
Thank you for remaining connected with the channel.
Chapters
00:00 Welcome Note
00:55 Overview / Introduction : What and Why of Exception Handling in Spring Boot
02:00 Key Annotations to be used for Java Exception Handling in Spring Boot i.e. @ControllerAdvice and @ExceptionHandler
03:06 Recap of CloudVendorAPI Spring Boot REST API project
06:53 What happens when NO Custom Exception Handling is done?
09:40 How to Handle Exception in Spring Boot : Spring Boot Exception Handling Demonstration - Step wise Coding for Exception Handling in Spring Boot
23:35 Testing REST API Spring Boot Exception Handling with Postman
24:45 Summary of Exception Handling in Spring Boot - Java
27:10 Thank You
#thinkconstructive #eshapuri #springboot
Queries
how to handle java spring boot rest api exceptions
how to handle spring boot rest api exceptions
what is exception handling in spring boot
why exception handling is important in java spring boot
how to do exception handling in spring boot rest api
how to use @ControllerAdvice annotation
what is cotrolleradvice annotation
what is exceptionhandler annotation
how to use @ExceptionHandler annotation
how to use @ResponseEntity annotation
what is responseentity annotation
how to test rest api using postman
how to run spring boot application
how to build spring boot application
how to implement rest api using spring boot
how to implement java rest api using spring boot
how to implement crud operations using rest api and spring boot
how to test rest api with postman
how to test crud rest api
what is spring boot
what is rest api
what is postman
using mysqlworkbench

[@dias6475]

Danke!

[@ThinkConstructive]

Thank you so much for your kind contribution ❤️❤️ Stay connected and please share with others too. Thanks 😊

[@blackjackal9506]

The most underrated channel ever!

[@InvokeDynamics]

I have been in the air trying to learn exception handling in springboot and finally I understood it. Thanks a lot for this clean, clear and precise video.

[@ThinkConstructive]

In order to have graceful response from Spring Boot REST APIs in any scenario, exception handling is essential to implement. Hence, learning Spring Boot exception handling becomes mandatory to build a complete REST API Java project. REST APIs shall have a proper exception handling. In this session what, why and how to do custom exception handling in Spring Boot REST API is discussed in detail and demonstrated with CloudVendorAPI project. GitHub project link - github.com/thinkconstructive/rest-api-spring-boot-demo/tree/master Please watch the complete session to fully understand how to handle exceptions in Spring Boot REST API application and try all the demonstration along with the video. That will be very helpful. Enjoy learning the Spring Boot 😊 Kindly Subscribe, Like, Share & Ring the Notification Bell to remain connected with Think Constructive. Cheers, Esha

[@mahendradeore8017]

Your teaching level so amazing mam if you make daily spring boot lecture then I will definitely prompt your channel my friend's also learning spring boot

[@ThinkConstructive]

Thank you 😊 I will try to increase the frequency of Spring Boot lecture,

[@mahendradeore8017]

@@ThinkConstructive thank you mam

[@aishurajas2507]

Thank you mam for such constructive contents. All the best for your good work!

[@reallyrarelol]

I'm really glad that I found your videos in regards to Spring Boot REST APIs it really helped me with my work task hehe, I will be waiting for a new REST API tutorial! Thanks alot!

[@ThinkConstructive]

Happy to hear this 😊 Sure, will be uploading more videos soon.

[@sachindrapandey6820]

Extremly crisp and clear..❤ I wish I could found you earlier

[@ParthPuri]

My all doubts got clear after watching this session. Thank you 😀

[@ThinkConstructive]

Glad to hear that. Welcome 😊

[@lakshminandakumar4196]

Thank you so much for your effort to teach all these topics clearly

[@khushikareliya6042]

First time ever I got a great understanding of SprintBoot and REST API!! Thanks Isha!

[@ThinkConstructive]

Happy to know that it helped you 😊 Stay connected and please share with others too. Thanks 😊

[@kondetisushma8617]

TQ so much for videos ..i understand very well

[@ArjunKumar-zu2kl]

Good tutorial, thank you so much....

[@uvanana.]

Thanks much i got it now

[@Joe-qv2jo]

Glad to see a woman in this men’s world of Spring boot, atleast in KZbin

[@ThinkConstructive]

Thanks 😊 Stay connected

[@Yangslehollandais]

Very clear. Thanks

[@ThinkConstructive]

Welcome

[@cricketcrazy143]

Your videos are very clear and helpful.

[@ThinkConstructive]

Thanks 😊 Glad to know that it is helpful for you.

[@gokulaher2476]

Very nice video Proper contents and simplicity in explaining the concept of exception handling Thanks!

[@ThinkConstructive]

Thank you so much 😊 Please stay connected and share with others too.

[@Arkainebe]

Thank you. Very clear. Subscribed

[@ThinkConstructive]

Thank you and welcome to the channel ❤️ Please stay connected and share with others too.

[@veeranarayanabojja]

Explained very well in practically. Thankyou very much

[@ThinkConstructive]

Most Welcome 😊 Stay connected and please share with others too. Thanks 😊

[@mparmar82]

very very good explanation. thank you Somuch Mam.

[@ThinkConstructive]

Welcome 😊

[@GauravKumar-dy5ch]

ma'am please continue this session ,and also add pagination and sorting,and also relational mapping

[@ThinkConstructive]

Sure, I will include these topics in my plan.

[@ferzinia9084]

Its like GlaDOS is teaching me. Thank you.

[@ThinkConstructive]

Glad to hear that! Thanks 😊

[@hitoumesh]

Excellent Excellent Excellent, ma'am you are a great teacher. Don't worry about number of likes, you are a star!

[@ThinkConstructive]

Thank you so much for your kind words and support. It really means a lot 😊 Please share channel details with others too 😊

[@java_learn6447]

thank you mam

[@AkashZore-jn7vg]

thank u mam ....

[@imranullah7355]

Thank you for the great video Ma'am, please also make a video that how to handle exception in post /delete and put APIs.

[@ThinkConstructive]

Welcome 😊 Sure, I will plan post, put and delete video of exception handling

[@dhirajkumarlll]

Very well explained ❤

[@ThinkConstructive]

Thanks a lot 😊

[@samanimeclub]

You Are the best !!!!

[@ThinkConstructive]

Thank you so much 😊 Please stay connected and share with others too.

[@caralvarezcossio4184]

Excelent explanation

[@ThinkConstructive]

Thank you 😊 Please stay connected and share with others too.

[@AnilKumarPrajapati-lv8fs]

Thanks mam

[@shivam_nema]

It helped a lot to clarify the topic. And you are not getting paid enough by the subscribers and likes. You explained it in a very neat and clean way. And i loved it ❣️ I have one query that we are getting null in the throwable... So how can we change the object and what could it be?

[@ThinkConstructive]

Thank you so much for your kind words. Really happy to know that you liked it and it helped you 😊 Please share with others too. Regarding throwable query - Are you not getting any cause in the Exception thrown? cloudVendorNotFoundException.getCause() -- In the demo code I have filled Exception Cause for throwable as argument.

[@shivam_nema]

@@ThinkConstructive yes I have also followed the steps and you are also getting null as throwable. Please check the video at 24:32

[@ThinkConstructive]

Yes, noticed that cause is getting filled with null. You can fill exception object instead of exception.getCause() By doing this you can get complete stacktrace for the deatiled cause. Please do the changes in CloudVendorExceptionHandler.java file as follows - 
 CloudVendorException cloudVendorException = new CloudVendorException( cloudVendorNotFoundException.getMessage(), cloudVendorNotFoundException, HttpStatus.NOT_FOUND );

[@venkatapawankanth3428]

Tq so much...it is very useful for me.. present I'm working on that..

[@ThinkConstructive]

Welcome 😊 Glad to hear this.

[@venkatapawankanth3428]

@@ThinkConstructive I need some help with you sister .

[@ThinkConstructive]

Please tell me

[@venkatapawankanth3428]

@@ThinkConstructive present no.. sister ..and what is the use of annotations.. pls upload one video about this topic sister ...req to you

[@ThinkConstructive]

I will include this in my plan.

[@ElmshornBoy]

Now understood, why ExceptionHandler is to be done in such a way. Clear the naming helps to identify. The many exception classes supports not to loose focus. You know exactly, where error message is to change.

[@ThinkConstructive]

Glad to know that it helped you 😊

[@Aaqibkhan-oy9fr]

Thank you maam

[@ThinkConstructive]

Welcome 😊 Stay connected and please share with others too. Thanks 😊

[@etherealsz]

thanksssssssssssssssss

[@suvendumohanty691]

Why we should create the other 2 classes such as CloudExceptionHandler and CloudVendorException,if our requirements is to generate a custom Exception then only the Object of CloudVendorNotFoundException is sufficient!!

[@cloudcompany611]

Amazing How to return customised json response like below { "code": 1, "msg": "success", "data": [ { "id": 3, "name": { "fr":"person", "en":"engilsd" }, }, ] } also can I use this exception package to my others controller | or iim going to create a new exception handler foreach controller?

[@ThinkConstructive]

Thanks 😊 You need to create a new Response class and build the targeted response in that, and then use this Response class to send response back. For exception -> Please watch the full session as I have explained things in detail there. Yes, same exception package can be used, it depends on the project requirement. Same exception handler can be used to handle multiple exceptions, if similar handling is needed. For having different handling for different exceptions, separate handlers should be used.

[@cloudcompany611]

@@ThinkConstructive 🥰 Thank you 🙏

[@snowsior621]

The best

[@ThinkConstructive]

Thank you 😊 Stay connected and please share with others too 😊

[@Arunkumar-vp8rf]

You have a great heart mom !

[@ThinkConstructive]

Thank you so much for your kind words ❤️❤️ Please stay connected and share with others too.

[@gooooooouuugle]

Is it possible to take transaction propagation from your side?

[@ThinkConstructive]

I will include this topic in my plan.

[@pankajtiwari9031]

what about throwable , do we have to pass string there also. Please cover a video on java exception handling

[@rajtiwari2308]

Mam when you are recording the screen then audio is not recorded properly, please use the input source same as used in the starting of the video while recording whole content. Thanks for such an imformative discussion. 👍

[@ThinkConstructive]

Sure, will take care. Thanks for the suggestion 😊 Happy that you liked the tutorial

[@andreazappa412]

I think that a more clear and maintainable way to handle exceptions in one spot consists of a single handler that return a ResponseEntity with annotation ExceptionHandler(value= {Exception.class }) then you gonna implement logics based on checking what type of exception is ( instanceof ) and setting up various status codes into a utility class. Obviously at controller level you must throw the proper exceptions. Finally return the ResponseEntity with proper error responses. It's just my confortable way to manage all the system. Anyway what has done by the tutor is well done.

[@Utkarsssh]

Informative Session and beautifully explained. Just a small request - Could you please provide a .properties equivalent of the yml file ?

[@Haris_LV]

u can convert it through application.properties online convertor

[@Joe-qv2jo]

Is there any sample project you could refer for proper exception handling for all crud scenarios

[@ThinkConstructive]

Not sure about any sample project with full CRUD exception handling. In this video Exception handling is done for Get. In the similar manner, other operations can be implemented. Below is the GitHub link for the current project which is being build my current spring boot series of lectures, this has CRUD implemented; exception handling is done in Get operation currently. github.com/thinkconstructive/rest-api-spring-boot-demo/tree/master

[@deepakswarnabarath3839]

I have tried to implement a custom exception handler when the list of vendors returned is empty. For that I used NO_CONTENT Http Status. I was able to get the http status as 204 no content but the response body is empty. can you please explain ?

[@danielpreza4159]

What about if I have more than one exception? How should I implement them?

[@ashokkumaar2005]

Hi Madam, Instead of isEmpty() --> empty() != null is this correct, bcas when I try to use isEmpty() getting error.

[@user-jt8nq7li8o]

while running application successfully started but i am hiting request through soup ui getting 404 not found

[@ragu3432]

Mam when I try to post or get in the postman i got "404 Not Found" error. I tried so many things but I still get the same error please tell me, Is there any way to solve this.

[@shivamdan8089]

ma'am the github code and the code that is shown in your video are a bit different

[@user-ix3hn1ef2k]

How to handling exception in post request?

[@ThinkConstructive]

I will create a separate video for this

[@shivamdan8089]

you have used some extra annotations in it

[@heinrichody7166]

Thanks so much for the video. I do not quite understand why CloudVendorException does not extend e.g. Exception or RuntimeException and why we do not use existing exception classes, such as org.springframework.web.client.HttpClientErrorException

[@mohammadyahya78]

amazing explanation

[@ThinkConstructive]

Thank you 😊 Please stay connected and share with others too.