Spring boot Download Upload File

source: bezkoder

Postgres run on docker

docker run -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=mysecretpassword -e POSTGRES_DB=file_db -p 5432:5432 library/postgres:13-alpine

Blob

Store the file into Postgres with Blob. https://www.baeldung.com/hibernate-lob

Testing

BDD Source: https://www.baeldung.com/cucumber-spring-integration https://krushna-dash.medium.com/spring-boot-cucumber-bdd-c077666c9c68

• must be on option create, so the H2 (database for the testing) create a fresh database every unit test
• if hibernate.ddl-auto change into option update, the H2 get the data from actual database, not create a fresh db

spring.jpa.hibernate.ddl-auto=create

• Implementation Scenario and Tagged Hooks JVM Hook

    @Before("@files")

• we can either use Cucumber Expressions or regular expressions inside the annotations
• right now we use regex

    Regular Express/Regex:
    @Then("^the client receives status code of (\\d+)$")

    Cucumber Express:
    @Then("the client receives status code of {int}")

• feature where the feature located

    @CucumberOptions(features = "src/test/resources/feature")

• Base Class or in this project (SpringIntegrationTest), we can use that class to implement the logic

• @CucumberContextConfiguration location https://stackoverflow.com/questions/71790142/cucumberbackendexception-no-qualifying-bean-of-type