Spring Boot plugin doesn't add lib folder in jar - spring-boot

Question

I have the following build.gradle:
group 'as'
version '1.0'
buildscript {
ext {
springVersion = '5.0.4.RELEASE'
springBootVersion = '1.5.6.RELEASE'
springJPAVersion = '2.0.5.RELEASE'
javaxVersion = '1.0.2'
}
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
}
}
apply plugin: 'java'
apply plugin: 'org.springframework.boot'
jar {
baseName = 'reports'
version = '0.0.1'
manifest {
attributes 'Implementation-Title': baseName,
'Implementation-Version': version
}
from {
configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}
}
repositories {
jcenter()
maven { url "https://repo.spring.io/snapshot" }
maven { url "https://repo.spring.io/milestone" }
}
dependencies {
implementation "org.springframework.boot:spring-boot-starter-web:${springBootVersion}"
implementation "org.springframework.boot:spring-boot-starter-data-jpa:${springBootVersion}"
implementation "org.springframework.data:spring-data-jpa:${springJPAVersion}"
implementation "javax.persistence:persistence-api:${javaxVersion}"
implementation "mysql:mysql-connector-java:5.1.43"
testImplementation group: 'junit', name: 'junit', version: '4.11'
}
And gradle creates jar with following structure:
BOOT-INF
classes
META-INF
org
But it seems that the structure must be the following:
BOOT-INF
classes
lib
META-INF
org
with lib folder, which contains dependencies, because now after launch I get error:
Exception ...
Caused by: java.lang.NoClassDefFoundError:
org/springframework/boot/SpringApplication at com.as.reports.Application.main(Application.java:12)

Answer 1

So I know this answer is probably too late to help you, but I stumbled across this question while trying to solve the exact same problem, and was reminded of this.
After half a day of trial and error, I found the solution, so hopefully I can save someone else the pain of finding this unanswered question.
The problem is with using the implementation keyword in your dependencies. The 1.x Spring Boot Gradle plugin doesn't appear recognize that keyword as notating required dependencies for repackaging a fat jar. If you change those back to the older compile keyword, you should get the necessary lib folder.