Introduction to spring boot

Santosh Kumar Kar,
Lead Software Engineer, EPAM
skkar.2k2@gmail.com

Before we start
A task for you – time 15 minutes
Develop a web application which reads Employee information from
MySQL DB and print on the screen. You need to use Spring and
Hibenate(JPA). It should run in any web container.

List out the challenges you have faced while setting up the env.
1) Download and set up a server (e.g. Tomcat)
2) Download and install a DB
3) Download required Spring jars
4) Download Hibernate jar compatible with the Spring version
5) Download jar for MySQL driver
6) Setting up web.xml to use spring MVC
7) Anything I left ???
Before we start

Why Spring Boot
• Provides a radically faster and widely accessible ‘getting started’
experience for all Spring development
• No clumsy XML Configuration by developers
• Provide opinionated ‘starter’ POMs to simplify your Maven
configuration
• Uses project management tool such as MAVEN or GRADLE
• Helps fast development and production ready code
• Embed Tomcat, Jetty or Undertow directly (no need to deploy WAR
files)
• In memory DB

Documentation
http://docs.spring.io/spring-boot/docs/current/reference/html/index.html

System Requirement Spring Boot 1.4.2.RELEASE
• Apache Maven
• Java 7 +

http://start.spring.io – a good starting point

Folder Structure to be followed

First Java Program for spring boot

Running the application
> mvn spring-boot:run

Devtools
• Automatic Restart
• LiveReload
• Remote Debug Tunneling
• Remote Update and Restart
Details at:
http://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-devtools.html

Spring Tool Suite (sts)
Download https://spring.io/tools/sts/all

Spring Web & MVC
application.properties
pom.xml

Without application.properties

Runnable war
1) In Main java file:
1.1 extend : org.springframework.boot.web.support.SpringBootServletInitializer
1.2 override the method:
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(MyApplication.class);
}
1.3 No need of main() method.
2) In pom.xml
1.1 Change the packing to war as:
<packaging>war</packaging>
3) Use command: mvn clean package
4) In target, rename the war<context root> as you want, deploy in tomcat and access with <context root>/<request mapping>

MySQL & jdbc
pom.xml
spring.datasource.jndi-name=java:jboss/datasources/customers - For JNDI Datasource

JPA in Spring Boot
Things to learn:
Only interface is enough which inherits to CrudRepository. The implementation will be provided by spring.
To know the other inherited methods, please go through the CrudRepository API.

Code
https://github.com/santoshkar/SpringBoot.git
The code can be downloaded from:

Send to skkar.2k2@gmail.com
Questions ???

Introduction to spring boot

More Related Content

What's hot

What's hot (20)

Viewers also liked

Viewers also liked (19)

Similar to Introduction to spring boot

Similar to Introduction to spring boot (20)

More from Santosh Kumar Kar

More from Santosh Kumar Kar (11)

Recently uploaded

Recently uploaded (20)

Introduction to spring boot