Write Your First Microservice Using Java and Spring Boot | Java microservices | REST API
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- Опубліковано 8 лип 2024
- In this lesson, you will Write Your First Microservice Using Java and Spring Boot . We will use REST API (Spring REST) , Spring Boot, ModelMapper, Spring Boot Data JPA, MYSQL in our tech stack today.
As I said you guys in our earlier lesson, The spring cloud helps us solving different problem/challenges that we usually face in java microservices. But Before we understand those challenges, we got to build some Microservices.
So Let’s Build two of them.
Note that you should have Spring REST, Spring Boot and Spring DATA as the prerequisite before proceeding with this lesson. I will not explain Spring Web MVC or Spring REST related things.
My main goal will be to develop couple of Microservices so that I can start teaching you spring cloud and spring microservices.
Resources :
If you are new to Spring , please check my spring core, spring mvc, spring mvc intermediate, spring jdbc,spring security playlist on this channel.They all are FREE FULL COURSE and you need them as prerequisite.
If you already have some spring basics, You can take the below paid course On Spring Framework to enhance your skill set.
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This Lesson, is part of my Spring boot advanced + Microservices Bootcamp
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Timestamp
00:00:00 - Prerequisites and Intro
00:06:08 - Building Employee Service using Spring Boot
00:09:44 - DB(MYSQL) Table Creation
00:12:46 - Writing Employee RESTController
00:27:06 - Introducing Modelmapper
00:42:57 - Address Microservice Development using Spring Boot and Spring REST
00:56:55 - Spring Boot Custom native Query
00:11:50 - QNA / Doubt Discussion
#JavaMicroservices #SpringBoot #SpringCloud
In this series of Sessions we will learn to create Microservices using spring boot and We will Implement spring cloud to resolve the known challenges during MS development.
This course will get you started with Microservices, for in-depth Microservices hands-on you can check out the below paid course : Course Name : Spring Boot Advanced + Microservices Bootcamp (Running Batch)Mode : Live / Self-Paced
www.seleniumexpress.com/cours...
#Microservices #SpringBoot #SpringCloud #java
For more free / paid courses visit
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Instead of additional dependency for modelmapper, there is BeanUtils class which is part of spring framework it provides copy method for copying properties from one object to another object
Pinned this comment. If anyone is reading this, here is another way how you could copy properties. It's another go to approach.
The most underrated channel sir, I really wish your channel grow faster and faster. It should be reaching more than a half million now already.
As a beginner, the way you teaching is best and easiest way for me to understand the microservices. Thank you so much for this.
Please start series of solving hackers ranking questions :)
Thank you abhilash....! . I haven't seen this kind of clean and good content presentation anywhere. It was a great learning experience. Thank you once again and keep it up.
Most waiting video 😍😍
Eagerly waiting for micro services series thanks 🙏 bro. This complete series is on UA-cam
Marvelous way of teaching 👍
Thanks sir for the videos sir. Please release the videos regularly so that we can enhance our skill
There is a implicit class called BeanUtils provided by spring as well to map property from entity to models.
A great explanation. Really helpful.
Also, we can use MapStruct (which automates the process of creating a mapper to map data objects with model objects using annotation) .
This channel must and should grow more, I request you everyone please share Abhilash videos.
4.:52 thank god she asked that question, I was having the same doubt as well.
your courses are good just a suggestion also include the error handling scenarios for the people who are new to this can get along with other things also.
sir ur background music get me chill when my overloaded by ur lecture
Thank you soo much sir. We love you sir
❤️❤️
Hi Abhilash, kudos for providing this kind of content on UA-cam.
I request you to make a tutorial on junit/mocking when u get free time
Thanks in advance 😊
Thank you abhilash....! can you make video on merging 2 APi calls to 2 different micro-services (each having their own db copy) as one using say GrpahQl or CQRS in this series
Thank you for the great video! Is it possible to use h2-database with microservices (not in Production. Only during development). Assume that I load the database from a file and not from the memory. How am I going to set the relationship between Employee Service and Address Service (1 to 1) if they are actually a different application? Can I do something like this or it is impossible to do with an H2 database? Thank you in advance!
Just curious as to why @Data was not used and manually @Getter @setter were used in entity class .
Love your videos ❤️ eagerly waiting.
I have a doubt, which frontend framework goes good with springboot(react or angular)
Thanks Mani for the kind words. ❤️
You can choose any one of it for learning. Once you have a project assigned, the you can work on whatever that comes in your way.
Can you please make a video on geting a list of employees? using the spring boot 3 ListCrudRepository? thanks in advance
Abilash your videos very use full for all.please try to upload the source code.
I am so confused in databases. Before you said that in microservices architecture, each service has separate database. But here you make common database for address and employee service. Maybe you will tell us how to join tables, when services has own database?
Tq
In address response we dont have employee id and also in the repository query. When I use the same process, I am getting error like column for employee id not found. Unless I add the employee id in the native query and response class, the issue doesn't resolve. How to handle this ?
Really good content sir.Is there any paid course available for this!! I want to explore more on this.
Please start series of real time project with microservices.
Hi Pradeep, you can follow the current series. This will serve the needs
@@SeleniumExpress Thank you abhilash. I have followed all Spring, Spring MVC series and share it too with frnds. It was great learning experience.
Sir kindly explain, why are we manually creating database and table ? Is the objective of jpa repository to create the database and table automatically ?
how do you deploy both microservices at the same time?
great
EmployeesResponse class properties will be change in case how to map both employees entity and response class
Bro please have a series on React
PLEASE MAKE VIDEO ON JAVA CONCURRENCY AND NON BLOCKING IO
Thank you
Hi Bro,It's a wonderful explanation..thank you very much for your support.but I have one doubt on importance of model mapper with and without.. please explain 😊
Hi Prasad, without a mapper it will be difficult to manually copy all your entity properties to dto/model properties, considering a scenario you got 30 properties inside your dto
Hello Sir,
In service package, I am getting error as non static method findById(ID) cannot be referenced from a static context.
How to fix it?
Post video for spring boot with multiple data source using spring data JpaRepository
your intro song BGM is very motivational
could have added spring data jpa, instead of manually working on databases and tables.
Could you please include authentication and authorisation as well
Hi Dikshi.
Sure, It's on the way ! Alternatively you can refer my spring security sessions
Thank you for your greate lessons. Are there any your paid courses on Udemy? Might I have the links? Thank you very much
Finally
Hello Sir I just came across your channel. May I know if you are teaching Development. Sorry I am just confused by the channel name
What if variables name in target class doesn’t match with request object?
Hi Bharath, then we got to manually map using another overloaded map method.
There are different patterns matches that model mapper provides us. Please refer the model mapper doc.
I will be creating few contents on model mapper and different mapping api in coming days.
👍
Why you didn't use @Repository annotation in Repository class or its optional to use ?
@Selenium Express - ?
yepp, it is optional
I think you can use IntelliJ and please white background with big font
Hi Pradeep, this series is already recorded. I will keep your suggestion in mind during my upcoming recordings.
@@SeleniumExpress are you building full-fledged microservices on youtube if yes, please include kafka
Hi Abhilash I asked one query in the last video plz reply is this series free to access or it's paid???
Hi Rahul, The spring cloud foundation will be free. However this video's are from my paid series which has 200+ hours of contents.
can u gives the source code of this lecture
Why I am getting column id not found after removing ea.id
Hello , just need to know it's fir tester or can be fir Java developer
for developers
@@vinay2841 thanks
💕❤️
Hi Abhilash when will we expect Next video for this series
This Saturday!
@@SeleniumExpress thanks
Why do we use response classes?
It is not a good practice to return the actual entity to the user. This is why we use another class as a return type.
For instance, assume we have an entity with 30 properties and we want to return to the user only some of them. We will have to create another class, in which we will map the values (only the properties we want to return to the user) from the entity to the response class and return the response class back to the user.
any github link for the code?
feign client sir
When will get next video sir
Coming Saturday!
Why video quality is unavailable for this video😢
you forgot to map employee id and address id by code in entity class
Can you give your github profile??
when iam going to practice same things in my sts, i am getting hibernate package as jarkata.persistence but for you javax.persistence, how you are getting that? can you please respond?
For spring boot 2.7 version it would be javax above 2.7 it's will be jarkata