Generating war for spring boot application - spring

Question

I have been following the tutorial provided by spring and cannot seem to understand why my .war file is empty. Click here to see/download the code. The end goal is to download this file, build a .war file and then deploy it to my tomcat server. I've added the following to the build.gradle
apply plugin: "war"
but this only generates a war that contains zero class files.
build.gradle
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle
plugin:1.5.3.RELEASE")
}
}
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'war'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
jar {
baseName = 'gs-spring-boot'
version = '0.1.0'
}
repositories {
mavenCentral()
}
sourceCompatibility = 1.8
targetCompatibility = 1.8
dependencies {
compile("org.springframework.boot:spring-boot-starter-web")
// tag::actuator[]
compile("org.springframework.boot:spring-boot-starter-actuator")
// end::actuator[]
// tag::tests[]
testCompile("org.springframework.boot:spring-boot-starter-test")
// end::tests[]
}

Answer 1

For the tutorial code, you need to do two things:
war plugin for packaging spring-boot ref:
apply plugin: 'war'
war {
baseName = 'gs-spring-boot'
version = '0.1.0'
}
Create a deployable war file spring-boot ref:
#SpringBootApplication
public class Application extends SpringBootServletInitializer {
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Application.class);
}
And also specify the tomcat dependency as provided:
dependencies {
// …
providedRuntime 'org.springframework.boot:spring-boot-starter-tomcat'
// …
}
Here is my commit reference and result: