Spring: Core Training

Outline

Introduction to Spring

• Java configuration and the Spring application context
• @Configuration and @Bean annotations
• @Import: working with multiple configuration files
• Defining bean scopes
• Launching a Spring Application and obtaining Beans

Spring JAVA Configuration: A Deeper Look

• External properties & Property sources
• Environment abstraction
• Using bean profiles
• Spring Expression Language (SpEL)

Annotation-based Dependency Injection

• Component scanning
• Autowiring using @Autowired
• Java configuration versus annotations, mixing.
• Lifecycle annotations: @PostConstruct and @PreDestroy
• Stereotypes and meta-annotations

Factory Pattern in Spring

• Using Spring FactoryBeans

Advanced Spring: How Does Spring Work Internally?

• The Spring Bean Lifecycle
• The BeanFactoryPostProcessor interception point
• The BeanPostProcessor interception point
• Spring Bean Proxies
• @Bean method return types

Aspect-oriented programming

• What problems does AOP solve?
• Defining pointcut expressions
• Implementing various types of advice

Testing a Spring-based Application

• Spring and Test-Driven Development
• Spring 5 integration testing with JUnit 5
• Application context caching and the @DirtiesContext annotation
• Profile selection with @ActiveProfiles
• Easy test data setup with @Sql

Data Access and JDBC with Spring

• How Spring integrates with existing data access technologies
• DataAccessException hierarchy
• Spring‘s JdbcTemplate

Database Transactions with Spring

• Transactions overview
• Transaction management with Spring
• Transaction propagation and rollback rules
• Transactions and integration testing

Spring Boot Introduction

• Introduction to Spring Boot Features
• Value Proposition of Spring Boot
• Creating a simple Boot application using Spring Initializer website

Spring Boot Dependencies, Auto-configuration, and Runtime

• Dependency management using Spring Boot starters
• How auto-configuration works
• Configuration properties
• Overriding auto-configuration
• Using CommandLineRunner

JPA with Spring and Spring Data

• Quick introduction to ORM with JPA
• Benefits of using Spring with JPA
• JPA configuration in Spring
• Configuring Spring JPA using Spring Boot
• Spring Data JPA dynamic repositories

Spring MVC Architecture and Overview

• Introduction to Spring MVC and request processing
• Controller method signatures
• Using @Controller, @RestController and @GetMapping annotations
• Configuring Spring MVC with Spring Boot
• Spring Boot packaging options, JAR or WAR

Rest with Spring MVC

• An introduction to the REST architectural style
• Controlling HTTP response codes with @ResponseStatus
• Implementing REST with Spring MVC, @RequestMapping, @RequestBody and @ResponseBody
• Spring MVC’s HttpMessageConverters and automatic content negotiation

Spring Security

• What problems does Spring Security solve?
• Configuring authentication
• Implementing authorization by intercepting URLs
• Authorization at the Java method level
• Understanding the Spring Security filter chain
• Spring security testing

Actuators, Metrics and Health Indicators

• Exposing Spring Boot Actuator endpoints
• Custom Metrics
• Health Indicators
• Creating custom Health Indicators
• External monitoring systems

Spring Boot Testing Enhancements

• Spring Boot testing overview
• Integration testing using @SpringBootTest
• Web slice testing with MockMvc framework
• Slices to test different layers of the application

Spring Security Oauth (Optional Topic)

• OAuth 2 Overview
• Implementing OAuth 2 using Spring Security OAuth

Reactive Applications with Spring (Optional Topic)

• Overview of Reactive Programming concepts
• Reactive Programming support in Spring
• Using Spring’s reactive WebClient