Update the base Spring Boot version

Upgrading from Spring Boot 2.5 to 2.7

Introduction

5m
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  Preparing to upgrade
  
  15m
  
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  Assess
  
  5m
  
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  Lab: Compile the Application
  
  10m
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  Update the base Spring Boot version
  
  8m
  
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  Lab: Update the base Spring Boot Version
  
  5m
  
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  Update Spring and Spring Boot dependencies
  
  5m
  
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  Lab: Update the Spring/Spring Boot dependencies
  
  6m
  
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  Update non-Spring dependencies
  
  7m
  
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  Lab: Update the Non-Spring Dependencies
  
  10m
  
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  Successful compilation
  
  7m
  
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  Lab: Get the application to successfully compile again
  
  7m
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  Spring Security considerations
  
  15m
  
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  Lab: Update Spring Security version
  
  15m
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  Run local tests
  
  5m
  
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  Lab: Fixing tests and housekeeping
  
  7m
  
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  Migrating from JUnit 4 to JUnit 5 (Jupiter)
  
  5m
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  Deprecated Properties & Runtime Errors
  
  5m
  
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  Lab: Deprecated Properties & Runtime Errors
  
  5m
  
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  Testing for Parity
  
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  Release - Ship It!
  
  5m
Completed

Conclusion

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In this lesson you learned the first thing that should be upgraded is the Spring Boot Starter Parent, and how to do this - even if you have a non-standard Maven POM. You were also introduced to the SCAR process we'll use throughout any upgrade: Small change – Compile – Assess – React, then repeat.