This is my first Spring Boot code. Unfortunately, it always shuts down. I was expecting it to run continuously so that my web client can get some data from the browser.
package hello;
import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;
@Controller
@EnableAutoConfiguration
public class SampleController {
@RequestMapping("/")
@ResponseBody
String home() {
return "Hello World!";
}
public static void main(String[] args) throws Exception {
SpringApplication.run(SampleController.class, args);
}
}
[@localhost initial]$ java -jar build/libs/gs-spring-boot-0.1.0.jar
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.0.0.RC4)
2014-03-13 09:20:24.805 INFO 14650 --- [ main] hello.SampleController : Starting SampleController on localhost.localdomain with PID 14650 (/home/xxx/dev/gs-spring-boot/initial/build/libs/gs-spring-boot-0.1.0.jar started by xxx)
2014-03-13 09:20:25.002 INFO 14650 --- [ main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@b9eec: startup date [Thu Mar 13 09:20:24 EDT 2014]; root of context hierarchy
2014-03-13 09:20:28.833 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Registering beans for JMX exposure on startup
2014-03-13 09:20:30.148 INFO 14650 --- [ main] o.s.c.support.DefaultLifecycleProcessor : Starting beans in phase 0
2014-03-13 09:20:30.154 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'requestMappingEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=requestMappingEndpoint]
2014-03-13 09:20:30.316 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'environmentEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=environmentEndpoint]
2014-03-13 09:20:30.335 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'healthEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=healthEndpoint]
2014-03-13 09:20:30.351 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'beansEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=beansEndpoint]
2014-03-13 09:20:30.376 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'infoEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=infoEndpoint]
2014-03-13 09:20:30.400 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'metricsEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=metricsEndpoint]
2014-03-13 09:20:30.413 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'traceEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=traceEndpoint]
2014-03-13 09:20:30.428 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'dumpEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=dumpEndpoint]
2014-03-13 09:20:30.450 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'autoConfigurationAuditEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=autoConfigurationAuditEndpoint]
2014-03-13 09:20:30.465 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'shutdownEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=shutdownEndpoint]
2014-03-13 09:20:30.548 INFO 14650 --- [ main] o.s.b.a.e.jmx.EndpointMBeanExporter : Located managed bean 'configurationPropertiesReportEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=configurationPropertiesReportEndpoint]
2014-03-13 09:20:30.589 INFO 14650 --- [ main] hello.SampleController : Started SampleController in 7.396 seconds (JVM running for 9.569)
2014-03-13 09:20:30.608 INFO 14650 --- [ Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@b9eec: startup date [Thu Mar 13 09:20:24 EDT 2014]; root of context hierarchy
2014-03-13 09:20:30.610 INFO 14650 --- [ Thread-2] o.s.c.support.DefaultLifecycleProcessor : Stopping beans in phase 0
2014-03-13 09:20:30.624 INFO 14650 --- [ Thread-2] o.s.b.a.e.jmx.EndpointMBeanExporter : Unregistering JMX-exposed beans on shutdown
Please advise.
Thanks
P.S. build.gradle is the fault.
dependencies {
// tag::jetty[]
compile("org.springframework.boot:spring-boot-starter-web") {
**exclude module: "spring-boot-starter-tomcat"**
}
Once I took off the above line in bold, everything works. My application context now is correct. Thanks Dave
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.0.0.RC4)
2014-03-13 13:58:08.965 INFO 7307 --- [ main] hello.Application : Starting
Application on with PID 7307 (/ladev/home/xxx/dev/gs-spring-boot/initial/build/libs/gs-spring-boo
t-0.1.0.jar started by xxx)
2014-03-13 13:58:09.021 INFO 7307 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshi
ng org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@45490eb5: startup
date [Thu Mar 13 13:58:09 MDT 2014]; root of context hierarchy
2014-03-13 13:58:09.653 INFO 7307 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overridi
ng bean definition for bean 'beanNameViewResolver': replacing [Root bean: class [null]; scope=; abstract=fal
se; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanNam
e=org.springframework.boot.actuate.autoconfigure.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration;
factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class
path resource [org/springframework/boot/actuate/autoconfigure/ErrorMvcAutoConfiguration$WhitelabelErrorView
Configuration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3;
dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconf
igure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; in
itMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/au
toconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]]
Resolution: the app is not a webapp because it doesn't have an embedded container (e.g. Tomcat) on the classpath. Adding one fixed it. If you are using Maven, then add this in pom.xml
:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
For Gradle (build.gradle
) it looks like
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
}
OLD: For older versions of Gradle (build.gradle
) it would be
dependencies {
compile 'org.springframework.boot:spring-boot-starter-web'
}