Я пытаюсь настроить поля custon application.properties, работающие в приложении весенней загрузки kotlin.
Моя текущая настройка:
ApplicationProperties.kt:
@Configuration
@ConfigurationProperties("mt")
class ApplicationProperties {
var initDatabase: Boolean? = null
val kafka = Kafka()
class Kafka {
lateinit var host: String
lateinit var port: String
}
}
application.properties:
mt.kafka.host=localhost
mt.kafka.port=9092
mt.init-database=true
И класс, в котором я хочу использовать свое приложение: InitApp.kt
@Component
@EnableTransactionManagement
@EnableConfigurationProperties(ApplicationProperties::class)
class InitApp {
@Autowired
lateinit var conf: ApplicationProperties
@Bean
fun createKafkaConsumer() {
log.info("${conf.kafka.host}")
}
}
К сожалению, это не работает, потому что я получаю:
Caused by: kotlin.UninitializedPropertyAccessException: lateinit property conf has not been initialized
Я следовал этому «руководству» Bootiful Kotlin Себастьена Делеза и Джоша Лонга @ Spring I / O 2018 и я использую следующие версии:
kotlinVersion = '1.2.51'
springBootVersion = '2.0.5.RELEASE'
apply plugin: 'kotlin-kapt'
находится в моем build.gradle, но это не должно связываться с @Autowired
, поскольку, насколько я понял, оно предназначено для автозаполнения в моих application.properties.
Обновление 1:
Я посмотрел на: Создание веб-приложений с использованием Spring Boot и Kotlin и добавил @EnableConfigurationProperties
на уровне приложений.Это также не сработало
Обновление 2:
Полная трассировка стека:
2018-10-10 16:17:53.058 ERROR 23619 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'producerFactory' defined in class path resource [de/mikatiming/de/test/InitApp.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.kafka.core.ProducerFactory]: Factory method 'producerFactory' threw exception; nested exception is kotlin.UninitializedPropertyAccessException: lateinit property applicationProperties has not been initialized
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:590) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1247) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1096) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:535) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:333) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1277) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1265) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at de.mikatiming.de.test.TestApplicationKt.main(TestApplication.kt:15) [main/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_172]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_172]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.5.RELEASE.jar:2.0.5.RELEASE]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.kafka.core.ProducerFactory]: Factory method 'producerFactory' threw exception; nested exception is kotlin.UninitializedPropertyAccessException: lateinit property applicationProperties has not been initialized
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:582) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
... 23 common frames omitted
Caused by: kotlin.UninitializedPropertyAccessException: lateinit property applicationProperties has not been initialized
at de.mikatiming.de.test.InitApp.getApplicationProperties(InitApp.kt:36) ~[main/:na]
at de.mikatiming.de.test.InitApp.producerFactory(InitApp.kt:58) ~[main/:na]
at de.mikatiming.de.test.InitApp$$EnhancerBySpringCGLIB$$c3b698bb.CGLIB$producerFactory$10(<generated>) ~[main/:na]
at de.mikatiming.de.test.InitApp$$EnhancerBySpringCGLIB$$c3b698bb$$FastClassBySpringCGLIB$$b315799f.invoke(<generated>) ~[main/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:365) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
at de.mikatiming.de.test.InitApp$$EnhancerBySpringCGLIB$$c3b698bb.producerFactory(<generated>) ~[main/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_172]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_172]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
... 24 common frames omitted
Обновление 3:
Я только что узнал, что при удаленииконкретный бин из моего InitApp:
@Bean
fun placeHolderConfigurer(): PropertySourcesPlaceholderConfigurer {
return PropertySourcesPlaceholderConfigurer()
}
я получаю другое сообщение об ошибке:
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'de.mikatiming.messageengine.configuration.ApplicationProperties' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Так что похоже, что это проблема с этим бином!