Spring boot doesn't wait for request - spring

Question

Yesterday I got very strange spring boot behaviour
For example: i'm trying to start server using ./gradlew bootRun:
...
:findMainClass
:bootRun
:: Spring Boot :: (v1.3.1.RELEASE)
2016-01-19 16:37:15.315 INFO 6118 --- [ main] c.e.server.Application$Companion : Starting Application.Companion on fake with PID 6118 (/home/user/code/xproject/server/build/classes/main started by user in /home/user/code/xproject/server)
2016-01-19 16:37:15.320 INFO 6118 --- [ main] c.e.server.Application$Companion : No active profile set, falling back to default profiles: default
2016-01-19 16:37:15.400 INFO 6118 --- [ main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext#a3ec6b: startup date [Tue Jan 19 16:37:15 GMT 2016]; root of context hierarchy
2016-01-19 16:37:17.908 INFO 6118 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2016-01-19 16:37:17.923 INFO 6118 --- [ main] c.e.server.Application$Companion : Started Application.Companion in 3.048 seconds (JVM running for 3.421)
2016-01-19 16:37:17.924 INFO 6118 --- [ Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext#a3ec6b: startup date [Tue Jan 19 16:37:15 GMT 2016]; root of context hierarchy
2016-01-19 16:37:17.930 INFO 6118 --- [ Thread-2] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
BUILD SUCCESSFUL
Total time: 23.756 secs
So it doesn't wait for requests as it always did. I thought there are some problems with classpath, so I put few annotated methods as #PostConstruct in Controllers and Services and can confirm that they are called and all dependencies are injected at that point.
Here is my gradle.build:
buildscript {
ext.kotlin_version = '1.0.0-beta-4584'
repositories {
mavenCentral()
jcenter()
}
dependencies {
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.3.1.RELEASE")
}
}
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'spring-boot'
apply plugin: 'kotlin'
jar {
baseName = 'xproject'
version = '0.1.0'
}
repositories {
mavenCentral()
jcenter()
}
dependencies {
compile("org.springframework.boot:spring-boot-starter-web")
compile("org.springframework.boot:spring-boot-starter-tomcat")
compile("org.springframework.boot:spring-boot-devtools")
compile 'org.springframework.data:spring-data-mongodb:1.8.2.RELEASE'
compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
compile "com.restfb:restfb:1.18.1"
testCompile("junit:junit")
testCompile("org.springframework.boot:spring-boot-starter-test")
}
sourceSets {
main {
java.srcDirs += ['java', 'kotlin']
}
test {
java.srcDirs += 'test'
}
}
UPD#1
Here is Application class(I haven't touch it from the beginning).
#SpringBootApplication
open class Application {
companion object {
#JvmStatic fun main(args: Array<String>) {
SpringApplication.run(Application::class.java, *args)
}
}
}
UPD#2
Small self-contained code
#RestController
#SpringBootApplication
#ComponentScan
public class GreetingController {
public static void main(String[] a) {
SpringApplication.run(GreetingController.class, a);
}
#PostConstruct
public void postConstruct() {
System.out.println("!! Post construct called");
}
private static final String template = "Hello, %s!";
private final AtomicLong counter = new AtomicLong();
#RequestMapping("/greeting")
public Greeting greeting(#RequestParam(value="name", defaultValue="World") String name) {
return new Greeting(counter.incrementAndGet(),
String.format(template, name));
}
}
Gives me almost the same result
:: Spring Boot :: (v1.3.1.RELEASE)
2016-01-19 17:18:19.790 INFO 8230 --- [ restartedMain] hello.GreetingController : Starting GreetingController on fake with PID 8230 (/home/user/code/xproject/server/build/classes/main started by user in /home/user/code/xproject/server)
2016-01-19 17:18:19.814 INFO 8230 --- [ restartedMain] hello.GreetingController : No active profile set, falling back to default profiles: default
2016-01-19 17:18:19.918 INFO 8230 --- [ restartedMain] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext#71ceb8: startup date [Tue Jan 19 17:18:19 GMT 2016]; root of context hierarchy
!! Post construct called
2016-01-19 17:18:22.860 INFO 8230 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2016-01-19 17:18:22.905 INFO 8230 --- [ restartedMain] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2016-01-19 17:18:22.922 INFO 8230 --- [ restartedMain] hello.GreetingController : Started GreetingController in 4.022 seconds (JVM running for 4.949)
2016-01-19 17:18:22.924 INFO 8230 --- [ Thread-8] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext#71ceb8: startup date [Tue Jan 19 17:18:19 GMT 2016]; root of context hierarchy
2016-01-19 17:18:22.930 INFO 8230 --- [ Thread-8] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
Process finished with exit code 1

Answer 1

I was having exactly the same issue you just described and in my case, I had forgotten to add spring-boot-starter-web as dependency. I had copy/pasted the dependencies from a basic example just having spring-boot-starter and I misread it.
Once I added it, the container was started normally and I got a regular web app listening at the 8080 port.
It is my first very basic test so it just has spring-boot-starter-web, kotlin-stdlib and kotlin-reflect as dependencies and class that looks like this:
#SpringBootApplication
class Application {
private val log = LoggerFactory.getLogger(Application::class.java)
}
fun main(args: Array<String>) {
SpringApplication.run(Application::class.java, *args)
}
From what I see in your code, the only thing I can think of is that you might require kotlin-reflect as well. I got the idea of including it from this blog post and this sample project also uses it so...
Good luck!