#springboot learning path

Using the spring framework, you can build an enterprise java application. On other hand, spring provides a template for common services like Transaction Management, Garbage collection. So, that developer can focus on writing business logic and the framework can take care of all the common concerns or common functionality. Additionally, Spring provides infrastructure support like DB connectivity.

But Spring framework served its purpose from the last 10 years that too, we need to do a lot of setup and configuration to make the spring framework work the way you want.

Also, Build and Deployment effort could still be high with a Spring framework Application. That’s were spring boot got many eyes.

Using Spring Boot, you can bootstrap or quickly start a Spring Application with minimal configurations.

Introduction to Microservices:

In one word told by Adrian Cockcroft who is known for a modern microservices architecture, “Microservices are loosely coupled service-oriented architecture with bounded context”.

Instead of going more on theory Let’s see a real-world requirement and break it how to build it in both monolithic and microservices way.

Requirement:

When we have a development requirement.

Example: Build a Movie Catalog application with Movie and capable of having other services.

If we follow the monolithic way,

We can follow the above traditional monolithic approach like above, having different modules like Movie Catalog, Movie, etc... and then have one database to manage information for different modules. But, the challenge with this approach is a minor issue with one of the areas can take down the entire application. Also, there will be a lot of interdependencies between these modules we will be managed during the development phase. To solve all the issues with the monolithic approach we can follow the most modern approach is a microservices-based approach.

If we follow microservices way,

Fetch Movie Information from MovieApp and corresponding information     from Other Service and display in the MovieCatalog Service.

All of the services and independent, they and build and deployed     independently. They will have their own database.

MovieCatalog Service will be the entry point for the application which internally look up MovieApp and Other services to get the desired data and display to the End-user.

This is a very basic example but we will be covering all the concepts of microservices and you will feel confident about building a similar application in the real world.

Let’s start Building Microservices with the Requirement we have:

Software’s Required: Java, STS, Maven build tool, MySQL Database, SQL Developer community edition, Postman Client.

 The steps that we covered in this project are:

1. Creating Spring Boot Project MovieApp Service 2. Service Discovery 3. Creating Spring Boot Project MovieCatalog Service and Integrating MovieApp

The projects that we covered in the SkillPractical SpringBoot Learning path are:

1. SpringBoot Getting Started 2. Create your SpringBoot App with Servlet/JSP/JDBC 3. Creating Your First RESTful Web Service with Java/SpringBoot 4. Developing Microservices with Spring Boot & Spring Cloud - Part 1 5. Developing Microservices with Spring Boot & Spring Cloud - Part 2 and etc..

For more details on SpringBoot Learning path please visit our website.

SkillPractical has SpringBoot learning path that helps the user to learn the Java from scratch. If user have any questions on Java Spring while attempting tests, he can post a question in SkillPractical community. They will get an answer from our expert consultants.

Using the spring framework, you can build an enterprise java application. On other hand, spring provides a template for common services like Transaction Management, Garbage collection. So, that developer can focus on writing business logic and the framework can take care of all the common concerns or common functionality. Additionally, Spring provides infrastructure support like DB connectivity.

In this SpringBoot project, we will implement a basic student enrollment project. We will create our page templates using JSP files, using JDBC to access the database, we will be using an MYSQL database in this project. Displaying student records and updating them using the servlet provided by spring boot known as Dispatcher Servlet which allows us to map the URI and perform HTTP methods such as get and post methods.

JDBC

Java Database Connectivity (JDBC) is an application programming interface (API) for the programming language Java, which defines how a client may access a database. It is a Java-based data access technology used for Java database connectivity. It is part of the Java Standard Edition platform, from Oracle Corporation. It provides methods to query and update data in a database and is oriented towards relational databases. A JDBC-to-ODBC bridge enables connections to any ODBC-accessible data source in the Java virtual machine (JVM) host environment. In our demo, we will be using JDBC Template that is provided by Spring Boot.

Create New Project in SpingBoot

1. To create a new project, go to File option and click on New, select Project option as below.

2. By clicking on Project option a new window will open select Maven and choose Maven Project then click on Next button as below.

3. Now you'll have a window as below.

Workspace is a directory which stores the project, I’m going to use default workspace location if you want to choose the different directory you can choose any file in your computer by using Browse option then click Next button.

4. You will find all the maven-archetypes that are available & maven-archetype-quickstart is the default one. Click on Next.

5. You'll come up with GroupId and ArtifactId for your project.

Generally, GroupId is your company's web domain in reverse (just like packages), ArtifactId is your project name, then click on the Finish button.

6. Now, the project gets created with the following structure in eclipse IDE.

Spring MVC

As Spring Boot is just a utility for setting up the application. we need some framework to build java web-application. For this project, we are using Spring MVC. Spring MVC is a framework for building java web-applications based on the model-view-controller(MVC) pattern. 

For more details on SpringBoot Learning path please visit our website.

SkillPractical has SpringBoot learning path that helps the user to learn the Java from scratch. If user have any questions on Java SpringBoot while attempting tests, he can post a question in SkillPractical community. They will get an answer from our expert consultants.

Using the spring framework, you can build an enterprise java application. On other hand, spring provides a template for common services like Transaction Management, Garbage collection. So, that developer can focus on writing business logic and the framework can take care of all the common concerns or common functionality. Additionally, Spring provides infrastructure support like DB connectivity.

But Spring framework served its purpose from the last 10 years that too, we need to do a lot of setup and configuration to make the spring framework work the way you want.

Also, Build and Deployment effort could still be high with a Spring framework Application. That’s were spring boot got many eyes.

Using Spring Boot, you can bootstrap or quickly start a Spring Application with minimal configurations.

In this SpringBoot project, we will implement a basic student enrollment project. We will create our page templates using JSP files, using JDBC to access the database, we will be using an MYSQL database in this project. Displaying student records and updating them using the servlet provided by spring boot known as Dispatcher Servlet which allows us to map the URI and perform HTTP methods such as get and post methods.

Prerequisites:

Java 8 or higher

Java IDE (will be using Eclipse in this demo)

A database (will be using MYSQL in this demo). If you don’t have     one, you can use the h2 database provided by Spring Boot

Software to test HTTP methods (will be using chrome extension     POSTMAN in this demo)

Advantages of using Spring Boot:

Removes a lot of boiler coding

Easy to use and implement

Provides a lot of features

Servlets

Servlets are the Java programs that run on the Java-enabled web server or application server. They are used to handle the request obtained from the web server, process the request, produce the response, then send a response back to the web server. In our demo, we will be using the Dispatcher Servlet that is provided by Spring Boot.

JSP

Java Server Pages (JSP) is a technology that helps software developers create dynamically generated web pages based on HTML, XML or other document types. Released in 1999 by Sun Microsystems, JSP is similar to PHP and ASP, but it uses the Java programming language. In our demo, we will explain how to embed JSP into our spring boot app.

JDBC

Java Database Connectivity (JDBC) is an application programming interface (API) for the programming language Java, which defines how a client may access a database. It is a Java-based data access technology used for Java database connectivity. It is part of the Java Standard Edition platform, from Oracle Corporation. It provides methods to query and update data in a database and is oriented towards relational databases. A JDBC-to-ODBC bridge enables connections to any ODBC-accessible data source in the Java virtual machine (JVM) host environment. In our demo, we will be using JDBC Template that is provided by Spring Boot.

For more details on SpringBoot Learning path please visit our website.

SkillPractical has SpringBoot learning path that helps the user to learn the Java from scratch. If user have any questions on Java SpringBoot while attempting tests, he can post a question in SkillPractical community. They will get an answer from our expert consultants.