One Gradle Thymeleaf project reloads on resource change, the other relaunches - gradle

Question

EDIT: I've narrowed down the behavior a bit, not sure if there's a way to accomplish what I need.
Turns out, my app has the Thymeleaf templates one level down in the source tree:
src/main/resources/tools-server/templates
And I set this in my tools-server.yml file that gets explicitly loaded at application launch. Removing that specification from my configuration, and moving the templates directory up one level to
src/main/resources/templates
Allows spring-boot-devtools to simply reload the template without restarting the app. I think I’ll file a bug with the project, unless there’s a way around it.
I'm still getting the hang of Spring Boot, so bear with me. I've created two projects over the last few months, each starting from different examples found online.
With respect to reloading Thymeleaf templates, the first project does it neatly when they change, issuing two log messages when a template changes, and nothing more. The other does a complete stop and restart of the application, which causes problems because it re-creates the temporary security password, among other things (it also takes longer).
The two gradle.build files are nearly identical, with slightly different dependencies. I'm not sure if those are the differences causing the different behavior.
The working one:
buildscript
{
ext
{
springBootVersion = "1.4.3.RELEASE"
}
repositories
{
mavenCentral()
}
dependencies
{
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
classpath group: "com.layer", name: "gradle-git-repo-plugin", version: "2.0.2"
}
}
apply plugin: "git-repo"
apply plugin: "java"
apply plugin: "maven"
apply plugin: "spring-boot"
jar
{
baseName = "HOA"
version = "0.0.1-SNAPSHOT"
}
sourceCompatibility = 1.8
targetCompatibility = 1.8
repositories
{
mavenCentral()
maven { url "https://maven.atlassian.com/3rdparty/" }
maven { url "https://mvnrepository.com/artifact/" }
maven { url "http://repo.spring.io/snapshot" }
maven { url "http://repo.spring.io/milestone" }
}
dependencies
{
compile group: "org.mindrot", name: "jbcrypt", version: "0.4-atlassian-1"
compile group: "org.eclipse.persistence", name: "javax.persistence", version: "2.1.1"
compile group: "org.springframework.data", name: "spring-data-jpa", version: "1.10.4.RELEASE"
compile group: "org.springframework.hateoas", name: "spring-hateoas", version: "0.21.0.RELEASE"
compile group: "com.h2database", name: "h2", version: "1.4.192"
compile("org.springframework.boot:spring-boot-devtools")
compile("org.springframework.boot:spring-boot-starter-aop")
compile("org.springframework.boot:spring-boot-starter-data-jpa")
compile("org.springframework.boot:spring-boot-starter-groovy-templates")
compile("org.springframework.boot:spring-boot-starter-thymeleaf")
compile("org.springframework.boot:spring-boot-starter-web")
// Automated Testing
testCompile("org.springframework.boot:spring-boot-starter-test")
testCompile("org.springframework.restdocs:spring-restdocs-mockmvc")
}
dependencyManagement
{
imports
{
mavenBom "org.springframework.cloud:spring-cloud-dependencies:Camden.SR1"
}
}
compileJava
{
options.compilerArgs << "-Xlint:all" << "-Xdiags:verbose"
}
bootRepackage
{
mainClass = "com.latencyzero.hoa.Application"
}
bootRun
{
addResources = true
}
The messy one:
buildscript
{
ext
{
springBootVersion = '1.4.3.RELEASE'
}
repositories
{
mavenCentral()
}
dependencies
{
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
}
}
apply plugin: 'java'
apply plugin: 'maven'
apply plugin: 'org.springframework.boot'
sourceCompatibility = 1.8
targetCompatibility = 1.8
archivesBaseName = 'toolcrib'
compileJava
{
options.compilerArgs << "-Xlint:all" << "-Xdiags:verbose"
}
jar
{
manifest
{
attributes 'Implementation-Title': 'ToolCrib',
'Implementation-Version': version
}
}
repositories
{
mavenCentral()
}
dependencyManagement
{
imports
{
mavenBom 'org.springframework.cloud:spring-cloud-dependencies:Camden.SR3'
}
}
dependencies
{
compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.0'
compile('org.springframework.boot:spring-boot-devtools')
compile('org.springframework.boot:spring-boot-starter-data-jpa')
compile('org.springframework.boot:spring-boot-starter-security')
compile('org.springframework.boot:spring-boot-starter-thymeleaf')
runtime('org.postgresql:postgresql')
testCompile('org.springframework.boot:spring-boot-starter-test')
}
springBoot
{
mainClass = "com.latencyzero.toolcrib.services.tools.ToolsServer"
}
bootRun
{
addResources = true
}
Thanks for any insight!

Answer 1

Have you had a look to the documentation
By default changing resources in /META-INF/maven, /META-INF/resources, /resources, /static, /public or /templates will not trigger a restart but will trigger a live reload.
And
If you want to customize these exclusions you can use the spring.devtools.restart.exclude
There is also spring.devtools.restart.additional-exclude to add more excludes and keep the defaults. In your case, you should add the following to your configuration:
spring.devtools.restart.additional-exclude=classpath:/tools-server/templates/