danvega/fcc-spring-boot-3

Building web applications in Java with Spring Boot 3

Building web applications in Java with Spring Boot 3

This course is a beginner's step-by-step guide to developing web applications using Spring Boot, the most popular framework for building Java applications. You'll learn about Spring Boot 3 and its role in enabling developers to deliver enterprise-grade applications. We'll dive into Spring's fundamentals by creating a REST API that communicates with a database and is supported by a comprehensive suite of tests. By the end of this course you will have learned what you need to start building your own web applications with Spring Boot 3.

Agenda

• Module 1: Course Introduction
  • Who am I?
  • Outcomes
  • Prerequisites
  • What is Spring?
• Module 2: Create the project
  • start.spring.io
    • Java Build Tools (Maven + Gradle)
  • How to organize your code
    • Where your code should go (create a simple class)
    • No default package
  • How to run your application (IDE/Maven/Command Line)
  • Model
    • Run + Location Class
    • Records
  • Logging
  • Spring Boot DevTools
• Module 3: Web Application (REST API)
  • Spring MVC
  • CRUD (in-memory)
  • @Component / Controller / RestController / Service / Repository
  • REST API Testing
    • Postman
    • Http Client (IntelliJ)
    • curl / HTTPie
  • Dependency Injection
  • Data Validation
  • Configuration
  • Error Handling
• Module 4: Database
  • H2 Database
  • JDBC Client (Keep it simple)
  • Command Line Runner
    • Loading JSON data
  • Docker Compose & PostgreSQL
  • Spring Data
• Module 5: REST Client
  • What is a client
    • Rest Template
    • WebClient
    • GraphQL Client
    • Rest Client
    • Http Interfaces
• Module 6: Testing
  • Spring Boot Testing Toolkit
    • No need to opt in to testing
    • contextLoads() test
    • @SpringBootTest annotation
    • Documentation
  • Writing Tests
    • InMemoryRunRepositoryTest
    • RunControllerTest
    • RunControllerIntTest
  • Spring Boot Slice Tests
    • JDBCRunRepositoryTest
  • Spring Rest Client Test
    • UserRestClientTest
• Resources

Who am I?

• Husband + Father (2 daughters) #girldad
• Cleveland, OH
• Spring Developer Advocate @Broadcom
• Java Champion
• Spring Academy Instructor
• 23+ years of Software Development Experience

Prerequisites

• Java Fundamentals (Beginner - Intermediate)
• JDK 17+
  • Check current version java --version
  • SDKMAN
• Java Build Tools (Maven / Gradle)
• IDE / Text Editor
  • IntelliJ IDEA
  • Spring Tools
    • Visual Studio Code
    • Eclipse
• API Testing Tool
  • Postman
  • Http Client (IntelliJ)
  • cURL / HTTPie
• Docker Desktop

Outcomes

• "Learn Spring"
  • What Spring is and what it can do
  • How to build a web application with Spring Boot
  • How to test a Spring Boot application
  • How to use Spring Data to interact with a database
• What are you going to build?
  • A fitness application that allows you to track runs through a REST API

The important part here is to take what you learn and apply it to your own projects.

What is Spring?

• What / Why Spring?

Resources

This is a list of resources I recommend you check out to continue your learning.

Dan Vega

• Website
• YouTube
• Twitter

Spring

• Spring Academy
• Spring I/O
• Spring Blog
• SpringOne at VMware Explore

Documentation

• Spring Framework Reference
• Spring Framework API
• Spring Boot Reference
• Spring Boot API
• Spring Boot Guides

Books

• Spring Boot Up and Running - Mark Heckler
• Learning Spring Boot 3.0 - Greg Turnquist
• Spring Boot in Action - Craig Walls

Podcasts

• Bootiful Podcast - Josh Long
• Spring Office Hours

YouTube

• Spring Developer
• Josh Long
• DaShaun Carter
• Spring Boot Learning
• Spring Tips
• Amigoscode
• Java Brains
• Daily Code Buffer

fcc-spring-boot-3's Issues

Corrected RunControllerTest::shouldDeleteRun test case

In the RunControllerTest.java, you have a failing test which was meant to mock deleting of run. You omit mocking the repository's findById method as seen below:

    @Test
    void shouldDeleteRun() throws Exception {
        var run = new Run(null, "Test", LocalDateTime.now(), LocalDateTime.now().plusMinutes(1), 1, Location.OUTDOOR,
                null);
        when(repository.findById(ArgumentMatchers.anyInt())).thenReturn(Optional.of(run));
        mvc.perform(delete("/api/runs/1"))
                .andExpect(status().isNoContent());
    }