Spring 5 training (Spring guru) - personal notes

Revision as of 20:36, 8 March 2018 by WikiFreak (talk | contribs)


I recently (2018) subscribe to an online training related to Spring 5 on Udemy. This page is a sum-up of my personal notes related to Spring 5.


Links

  • Spring initializr - to generate a quick start project based on the libraries you choose


Very simple web-application

  • Go to Spring initializr
  • Select
    • web > web
    • SQL > JPA
    • SQL > H2
    • Templates > Thymeleaf
    • Ops > actuator


H2 hint

When using H2 on a web application, don't forget to enable the console! Edit application.properties as follow: 

spring.h2.console.enabled=true
# replace "spring5webapp" by your own application
spring.datasource.url=jdbc:h2:mem:spring5webapp;DB_CLOSE_ON_EXIT=FALSE

Then you can reach the console at http://localhost:8080/h2-console


Hibernate

General notes

Hibernate recommends to implement hashCode() and equals() on all JPA entities. They also recommend to use a particular Business ID when possible, if not then use the ID. Only the key fields should be in these methods.


How to run project

Spring boot provides some out-of-the-box tools.

To run the application: 

# Using the maven installation (outside the project)
mvn spring-boot:run

# Using the embedded tool
./mvnw spring-boot:run


IntelliJ configuration

Useful plugings:

  • File > Settings > Plugins > Browse repositories
    • .ignore
    • Ideolog

Enable toolbars! View > Toolbar

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