Java Spring Boot REST API JSON Response Handling Tutorial with Demonstration

Learn how to generate custom responses in Java Spring Boot REST API application and return custom json responses back to REST Client.
Building REST API using Spring Boot framework is highly in demand skill currently and it also helps building Microservices very efficiently. Java Spring boot REST API project often demands to have responses back in a particular format and hence this session will be extremely useful for java spring boot developers. In this tutorial we will discuss, how generic json response looks like and then how to transform that to custom response. We will evolve CloudVendorAPI application and make it capable to generate and return custom rest api responses back to rest client with the help of ResponseEntity. We will do required java code changes and then test spring boot application using Postman tool.
We will see how to construct response which will have response message, required HttpStatus and data provided from mysql database, changes in the controller layer and finally respond back to rest client.
Kindly watch the complete session to understand it completely.

Some Key points for REST API -
REST APIs also called as RESTful APIs
REST = Representational State Transfer
API = Application Programming Interface
REST is a set of architectural constraints, not a protocol or a standard. API developers can implement REST in a variety of ways
A REST API is an application programming interface that follows the constraints of REST architectural style and allows for interaction with RESTful web services
REST APIs work over HTTP
Delivers information using any one of the following formats -
JSON (Most popular) , Text , HTML , XML , Javascript and more

Spring Boot Key points -
@SpringBootApplication for starting
Easily create stand-alone, production-grade Spring based Applications
Tomcat, Jetty are embedded
Provides starter dependencies
Automatically configure Spring and third party libraries
Provides production ready features such as health checks, metrics, etc.
No code generation, No XML configuration

Link for 1st Spring Boot session -
Link for 2nd Spring Boot session -
Link for the 3rd Spring Boot Session -
Playlist for Spring Boot How To tutorial is -
GitHub link for CloudVendorApi code -

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#thinkconstructive #eshapuri #springboot

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Chapters
00:00 Welcome note
00:43 Introduction of Response Handling in Spring Boot REST API Application
02:32 Demonstration of Response Handling in Spring Boot REST API
05:57 Response Handler Coding and Explanation - Demonstration of Response Handling in Spring Boot REST API
10:34 REST Controller Layer coding and explanation - Demonstration of Response Handling in Spring Boot REST API
13:36 POSTMAN testing and checking the JSON Response format - Demonstration of Response Handling in Spring Boot REST API
15:36 Summary
16:32 Thank You

[ThinkConstructive]

Java Spring boot REST API project often demands to have responses in a particular format and hence this session will be extremely useful for java spring boot developers who are particularly developing REST APIs. Kindly watch the complete session to get complete benefit from this.
GitHub link for CloudVendorApi code -
Happy learning.
Cheers,
Esha

[theshivrajofficial]

thanks mam for showing the new way to achieve custom response... i have achieved this result by creating lots of DTO classes...but now i got this technic...thanks again for creating awesome content...

[debanathswain]

Thank you ma'am for your awesome lecture very well explained

[tomermadmon]

Hi
Your explanation is very clear.
I have few questions..
Why don't you just create generic object contains T response, String status and String message? In addition, you can use Lombok builder or to implement builder by yourself..

[mithleshpuri]

Learning lot from your sessions. Thank you

[DeepakLalchandaniProfile]

Hi, where to learn Spring from ? Do you have a youtube video for that

[narendra]

could you please give me one session about doing Json Pars in spring boot application and simplifies?

[oligooliogo]

Hi how can we write the responses for each endpoint in a file and put it in folder resources..thanks

[RAJ]

Thank you for how to create custom json response.
could you make a video to get and access C# json response in springboot app using java.
because C# json response contains meta field, data field and status field.

[yarraravitejaskpbpmlule]

Hi can you make session on

Spring security

For enterprise level application

That would be helpful for me and my friends
Who are working on the project

Thanks in anticipation
Yarra Raviteja

[sayyadaareesh]

Hello ma'am
I think you also perform change on service package like CloudVendorService and it's implementation class because this method comes from service package.
Thank you.

[sebastiansagrario]

its ok to return null as a responseObject and a status code 404 when you cant find that object in the database? thanks you!

[zuberdiwan]

Very Usefull..Thanks For Sharing Informative Content.

[pranaypaul]

Very simple to the point JSON Response Handling example!

[baharmahammad]

Awesome tutorial. What about getting back all cloud vendors in the form of an array plus status and message?

[giangnguyenthetruong]

Using ResponseEntity or using custom responses, which one is better ?

[RjDBIIPL]

i learned a lot from you madam ji, tqsm🌹

[audiv]

Thanks Mam.. U have helped me save a lot of time in handling this usecase.

[rhodesjh]

Thanks for this. How do we get the same kind of Json response for getAllCloudVendorDetails?