spring-boot-starter-web #Autowired isn't working - spring

Question

I asked a similar question and thought it was answered. However, yesterday it stopped working so I am going to ask again, but with my modified classes. I hope that is the right protocol for this....
I have a spring-boot-starter-web that is throwing a null pointer on startup because one of the classes isn't being Autowired. Here is my setup:
package com.company.product
#Configuration
#ComponentScan
#EnableJpaRepositories
#EnableAutoConfiguration
public class OFAC {
public static void main(String[] args) {
ApplicationContext ofac = SpringApplication.run( OFAC.class, args );
}
}
In a subpackage I have:
package com.company.product.configuration
#Configuration
#ComponentScan()
public class OFAConfiguration {
#Autowired
private ConfigurationSettings configurationSettings;
#Bean
public EmbeddedServletContainerFactory servletContainer() {
int port = 9000;
TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory();
if ( configurationSettings.getServerPort()!= null ) {
port = Integer.parseInt( configurationSettings.getServerPort());
}
factory.setPort( port );
factory.setSessionTimeout( 30, TimeUnit.MINUTES );
factory.addErrorPages( new ErrorPage( HttpStatus.NOT_FOUND, "/notfound.html" ) );
return factory;
}
..}
This following class is null when #Autowired, but I can set a breakpoint and see it initialized.
package com.company.product.configuration
#Component
#ConfigurationProperties()
public class ConfigurationSettings {
#Value("${ofac.appName}")
private String appName;
#Value("${ofac.appDescription}")
private String appDescription;
#Value("${ofac.serverPort}")
private String serverPort;
// getters and setters
..
}
This is where a null pointer is thrown because ConfigurationSettings is null:
package com.company.product.service
#Component
public class FileDownloadService {
#Autowired
private ConfigurationSettings configurationSettings;
private List<String> paths = new ArrayList<String>();
public FileDownloadService() {
paths.add( configurationSettings.getFileDownloadSdn() );
paths.add( configurationSettings.getFileDownloadAdd() );
paths.add( configurationSettings.getFilDownloadAlt() );
paths.add( configurationSettings.getFileDownloadXmlHeader() );
}
Here is my log output:
:: Spring Boot :: (v1.0.0.RC4)
2014-03-14 17:59:16.975 INFO 41410 --- [ main] com.company.product.OFAC : Starting OFAC on Edelweiss.local with PID 41410 (/Users/David/projects/cnet/OFAC/out/production/OFAC started by...)
2014-03-14 17:59:16.981 DEBUG 41410 --- [ main] o.s.boot.SpringApplication : Loading source class com.company.product.OFAC
2014-03-14 17:59:17.517 INFO 41410 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext#64de5c64: startup date [Fri Mar 14 17:59:17 MDT 2014]; root of context hierarchy
2014-03-14 17:59:17.522 DEBUG 41410 --- [ main] ationConfigEmbeddedWebApplicationContext : Bean factory for org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext#64de5c64: org.springframework.beans.factory.support.DefaultListableBeanFactory#600f2cb8: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,OFAC]; root of factory hierarchy
2014-03-14 17:59:20.249 DEBUG 41410 --- [ main] ationConfigEmbeddedWebApplicationContext : Using MessageSource [org.springframework.context.support.ReloadableResourceBundleMessageSource: basenames=[classpath:messages/messages,classpath:messages/validation]]
2014-03-14 17:59:20.249 DEBUG 41410 --- [ main] ationConfigEmbeddedWebApplicationContext : Using ApplicationEventMulticaster [org.springframework.context.event.SimpleApplicationEventMulticaster#4e5197fd]
2014-03-14 17:59:25.590 DEBUG 41410 --- [ main] .t.TomcatEmbeddedServletContainerFactory : Code archive: /..gvm/gradle/1.10/bin/caches/modules-2/files-2.1/org.springframework.boot/spring-boot/1.0.0.RC4/b8934d1dcdfd6f454ad86ea7372fd8a6dd2f6e61/spring-boot-1.0.0.RC4.jar
2014-03-14 17:59:25.591 DEBUG 41410 --- [ main] .t.TomcatEmbeddedServletContainerFactory : Code archive: /..gvm/gradle/1.10/bin/caches/modules-2/files-2.1/org.springframework.boot/spring-boot/1.0.0.RC4/b8934d1dcdfd6f454ad86ea7372fd8a6dd2f6e61/spring-boot-1.0.0.RC4.jar
2014-03-14 17:59:25.591 DEBUG 41410 --- [ main] .t.TomcatEmbeddedServletContainerFactory : Document root: /Users/me/projects/cnet/OFAC/src/main/webapp
2014-03-14 17:59:25.642 INFO 41410 --- [ main] .t.TomcatEmbeddedServletContainerFactory : Server initialized with port: 9001
2014-03-14 17:59:26.156 INFO 41410 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2014-03-14 17:59:26.157 INFO 41410 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/7.0.52
2014-03-14 17:59:26.463 INFO 41410 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2014-03-14 17:59:26.464 INFO 41410 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 8954 ms
2014-03-14 17:59:27.348 INFO 41410 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2014-03-14 17:59:27.353 INFO 41410 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2014-03-14 17:59:28.064 INFO 41410 --- [ost-startStop-1] o.a.catalina.util.SessionIdGenerator : Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [203] milliseconds.
2014-03-14 17:59:28.232 INFO 41410 --- [ main] o.s.j.d.e.EmbeddedDatabaseFactory : Creating embedded database 'ofac'
2014-03-14 17:59:28.509 INFO 41410 --- [ main] o.s.j.d.init.ResourceDatabasePopulator : Executing SQL script from class path resource [h2.sql]
2014-03-14 17:59:28.526 INFO 41410 --- [ main] o.s.j.d.init.ResourceDatabasePopulator : Done executing SQL script from class path resource [h2.sql] in 17 ms.
2014-03-14 17:59:28.763 INFO 41410 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2014-03-14 17:59:28.814 INFO 41410 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2014-03-14 17:59:29.117 INFO 41410 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {4.3.1.Final}
2014-03-14 17:59:29.120 INFO 41410 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2014-03-14 17:59:29.123 INFO 41410 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2014-03-14 17:59:29.545 INFO 41410 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {4.0.4.Final}
2014-03-14 17:59:29.684 INFO 41410 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
2014-03-14 17:59:29.846 INFO 41410 --- [ main] o.h.h.i.ast.ASTQueryTranslatorFactory : HHH000397: Using ASTQueryTranslatorFactory
2014-03-14 17:59:30.010 INFO 41410 --- [ main] org.hibernate.tool.hbm2ddl.SchemaUpdate : HHH000228: Running hbm2ddl schema update
2014-03-14 17:59:30.011 INFO 41410 --- [ main] org.hibernate.tool.hbm2ddl.SchemaUpdate : HHH000102: Fetching database metadata
2014-03-14 17:59:30.014 INFO 41410 --- [ main] org.hibernate.tool.hbm2ddl.SchemaUpdate : HHH000396: Updating schema
2014-03-14 17:59:30.015 INFO 41410 --- [ main] org.hibernate.tool.hbm2ddl.SchemaUpdate : HHH000232: Schema update complete
2014-03-14 17:59:39.493 INFO 41410 --- [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2014-03-14 17:59:39.558 INFO 41410 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat
=========================
AUTO-CONFIGURATION REPORT
=========================
Positive matches:
-----------------
PropertyPlaceholderAutoConfiguration#propertySourcesPlaceholderConfigurer
- #ConditionalOnMissingBean (types: org.springframework.context.support.PropertySourcesPlaceholderConfigurer; SearchStrategy: current) found no beans (OnBeanCondition)
AopAutoConfiguration
- #ConditionalOnClass classes found: org.springframework.context.annotation.EnableAspectJAutoProxy,org.aspectj.lang.annotation.Aspect,org.aspectj.lang.reflect.Advice (OnClassCondition)
- SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration: ${spring.aop.auto:true} (OnExpressionCondition)
AopAutoConfiguration.JdkDynamicAutoProxyConfiguration
- SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration$JdkDynamicAutoProxyConfiguration: !${spring.aop.proxyTargetClass:false} (OnExpressionCondition)
JpaRepositoriesAutoConfiguration
- #ConditionalOnClass classes found: org.springframework.data.jpa.repository.JpaRepository (OnClassCondition)
- #ConditionalOnBean (types: javax.sql.DataSource; SearchStrategy: all) found the following [dataSource] #ConditionalOnMissingBean (types: org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean; SearchStrategy: all) found no beans (OnBeanCondition)
JpaRepositoriesAutoConfiguration.JpaWebConfiguration
- found web application StandardServletEnvironment (OnWebApplicationCondition)
- #ConditionalOnMissingBean (types: org.springframework.data.web.PageableHandlerMethodArgumentResolver; SearchStrategy: all) found no beans (OnBeanCondition)
DataSourceAutoConfiguration
- #ConditionalOnClass classes found: org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType (OnClassCondition)
DataSourceAutoConfiguration.JdbcTemplateConfiguration
- existing auto database detected (DataSourceAutoConfiguration.DatabaseCondition)
DataSourceAutoConfiguration.JdbcTemplateConfiguration#jdbcTemplate
- #ConditionalOnMissingBean (types: org.springframework.jdbc.core.JdbcOperations; SearchStrategy: all) found no beans (OnBeanCondition)
DataSourceAutoConfiguration.JdbcTemplateConfiguration#namedParameterJdbcTemplate
- #ConditionalOnMissingBean (types: org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations; SearchStrategy: all) found no beans (OnBeanCondition)
DataSourceTransactionManagerAutoConfiguration
- #ConditionalOnClass classes found: org.springframework.jdbc.core.JdbcTemplate,org.springframework.transaction.PlatformTransactionManager (OnClassCondition)
JmxAutoConfiguration
- #ConditionalOnClass classes found: org.springframework.jmx.export.MBeanExporter (OnClassCondition)
- SpEL expression on org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration: ${spring.jmx.enabled:true} (OnExpressionCondition)
- #ConditionalOnMissingBean (types: org.springframework.jmx.export.MBeanExporter; SearchStrategy: all) found no beans (OnBeanCondition)
HibernateJpaAutoConfiguration
- found HibernateEntityManager class (HibernateJpaAutoConfiguration.HibernateEntityManagerCondition)
- #ConditionalOnClass classes found: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean,org.springframework.transaction.annotation.EnableTransactionManagement,javax.persistence.EntityManager (OnClassCondition)
JpaBaseConfiguration.JpaWebConfiguration
- found web application StandardServletEnvironment (OnWebApplicationCondition)
- SpEL expression on org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration$JpaWebConfiguration: ${spring.jpa.openInView:${spring.jpa.open_in_view:true}} (OnExpressionCondition)
- #ConditionalOnMissingBean (types: org.springframework.orm.jpa.support.OpenEntityManagerInViewInterceptor,org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter; SearchStrategy: all) found no beans (OnBeanCondition)
ThymeleafAutoConfiguration
- #ConditionalOnClass classes found: org.thymeleaf.spring4.SpringTemplateEngine (OnClassCondition)
ThymeleafAutoConfiguration.DefaultTemplateResolverConfiguration
- #ConditionalOnMissingBean (names: defaultTemplateResolver; SearchStrategy: all) found no beans (OnBeanCondition)
ThymeleafAutoConfiguration.ThymeleafDefaultConfiguration
- #ConditionalOnMissingBean (types: org.thymeleaf.spring4.SpringTemplateEngine; SearchStrategy: all) found no beans (OnBeanCondition)
ThymeleafAutoConfiguration.ThymeleafViewResolverConfiguration
- #ConditionalOnClass classes found: javax.servlet.Servlet (OnClassCondition)
com.edelweissco.ofac
ThymeleafAutoConfiguration.ThymeleafViewResolverConfiguration#thymeleafViewResolver
- #ConditionalOnMissingBean (names: thymeleafViewResolver; SearchStrategy: all) found no beans (OnBeanCondition)
DispatcherServletAutoConfiguration
- found web application StandardServletEnvironment (OnWebApplicationCondition)
- #ConditionalOnClass classes found: org.springframework.web.servlet.DispatcherServlet (OnClassCondition)
DispatcherServletAutoConfiguration.DispatcherServletConfiguration
- no DispatcherServlet found (DispatcherServletAutoConfiguration.DefaultDispatcherServletCondition)
- #ConditionalOnClass classes found: javax.servlet.ServletRegistration (OnClassCondition)
EmbeddedServletContainerAutoConfiguration
- found web application StandardServletEnvironment (OnWebApplicationCondition)
HttpMessageConvertersAutoConfiguration
- #ConditionalOnClass classes found: org.springframework.http.converter.HttpMessageConverter (OnClassCondition)
HttpMessageConvertersAutoConfiguration#messageConverters
- #ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.web.HttpMessageConverters; SearchStrategy: all) found no beans (OnBeanCondition)
HttpMessageConvertersAutoConfiguration.ObjectMappers
- #ConditionalOnClass classes found: com.fasterxml.jackson.databind.ObjectMapper (OnClassCondition)
HttpMessageConvertersAutoConfiguration.ObjectMappers#jacksonObjectMapper
- #ConditionalOnMissingBean (types: com.fasterxml.jackson.databind.ObjectMapper; SearchStrategy: all) found no beans (OnBeanCondition)
HttpMessageConvertersAutoConfiguration.ObjectMappers#mappingJackson2HttpMessageConverter
- #ConditionalOnMissingBean (types: org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; SearchStrategy: all) found no beans (OnBeanCondition)
ServerPropertiesAutoConfiguration
- found web application StandardServletEnvironment (OnWebApplicationCondition)
ServerPropertiesAutoConfiguration#serverProperties
- #ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.web.ServerProperties; SearchStrategy: current) found no beans (OnBeanCondition)
WebMvcAutoConfiguration
- found web application StandardServletEnvironment (OnWebApplicationCondition)
- #ConditionalOnClass classes found: javax.servlet.Servlet,org.springframework.web.servlet.DispatcherServlet,org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter (OnClassCondition)
- #ConditionalOnMissingBean (types: org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; SearchStrategy: all) found no beans (OnBeanCondition)
WebMvcAutoConfiguration#hiddenHttpMethodFilter
- #ConditionalOnMissingBean (types: org.springframework.web.filter.HiddenHttpMethodFilter; SearchStrategy: all) found no beans (OnBeanCondition)
WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#defaultViewResolver
- #ConditionalOnMissingBean (types: org.springframework.web.servlet.view.InternalResourceViewResolver; SearchStrategy: all) found no beans (OnBeanCondition)
WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#requestContextListener
- #ConditionalOnMissingBean (types: org.springframework.web.context.request.RequestContextListener; SearchStrategy: all) found no beans (OnBeanCondition)
Negative matches:
-----------------
MessageSourceAutoConfiguration
- #ConditionalOnMissingBean (types: org.springframework.context.MessageSource; SearchStrategy: all) found the following [messageSource] (OnBeanCondition)
RabbitAutoConfiguration
- required #ConditionalOnClass classes not found: org.springframework.amqp.rabbit.core.RabbitTemplate,com.rabbitmq.client.Channel (OnClassCondition)
AopAutoConfiguration.CglibAutoProxyConfiguration
- SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration$CglibAutoProxyConfiguration: ${spring.aop.proxyTargetClass:false} (OnExpressionCondition)
BatchAutoConfiguration
- required #ConditionalOnClass classes not found: org.springframework.batch.core.launch.JobLauncher (OnClassCondition)
MongoRepositoriesAutoConfiguration
- required #ConditionalOnClass classes not found: com.mongodb.Mongo,org.springframework.data.mongodb.repository.MongoRepository (OnClassCondition)
MongoTemplateAutoConfiguration
- required #ConditionalOnClass classes not found: com.mongodb.Mongo,org.springframework.data.mongodb.core.MongoTemplate (OnClassCondition)
DataSourceAutoConfiguration.DbcpConfiguration
- Tomcat DataSource (DataSourceAutoConfiguration.BasicDatabaseCondition)
DataSourceAutoConfiguration.EmbeddedConfiguration
- existing non-embedded database detected (DataSourceAutoConfiguration.EmbeddedDatabaseCondition)
DataSourceAutoConfiguration.TomcatConfiguration
- found database driver org.h2.Driver (DataSourceAutoConfiguration.TomcatDatabaseCondition)
- #ConditionalOnMissingBean (types: javax.sql.DataSource; SearchStrategy: all) found the following [dataSource] (OnBeanCondition)
DataSourceTransactionManagerAutoConfiguration#transactionManager
- #ConditionalOnMissingBean (names: transactionManager; SearchStrategy: all) found the following [transactionManager] (OnBeanCondition)
DataSourceTransactionManagerAutoConfiguration.TransactionManagementConfiguration
- required #ConditionalOnMissing classes found: org.springframework.transaction.annotation.AbstractTransactionManagementConfiguration (OnClassCondition)
JmsTemplateAutoConfiguration
- required #ConditionalOnClass classes not found: org.springframework.jms.core.JmsTemplate,javax.jms.ConnectionFactory (OnClassCondition)
DeviceResolverAutoConfiguration
- required #ConditionalOnClass classes not found: org.springframework.mobile.device.DeviceResolverHandlerInterceptor,org.springframework.mobile.device.DeviceHandlerMethodArgumentResolver (OnClassCondition)
MongoAutoConfiguration
- required #ConditionalOnClass classes not found: com.mongodb.Mongo (OnClassCondition)
JpaBaseConfiguration#entityManagerFactory
- #ConditionalOnMissingBean (names: entityManagerFactory; SearchStrategy: all) found the following [entityManagerFactory] (OnBeanCondition)
JpaBaseConfiguration#jpaVendorAdapter
- #ConditionalOnMissingBean (types: org.springframework.orm.jpa.JpaVendorAdapter; SearchStrategy: all) found the following [jpaVendorAdapter] (OnBeanCondition)
JpaBaseConfiguration#transactionManager
- #ConditionalOnMissingBean (types: org.springframework.transaction.PlatformTransactionManager; SearchStrategy: all) found the following [transactionManager] (OnBeanCondition)
ReactorAutoConfiguration
- required #ConditionalOnClass classes not found: reactor.spring.context.config.EnableReactor (OnClassCondition)
RedisAutoConfiguration
- required #ConditionalOnClass classes not found: org.springframework.data.redis.connection.lettuce.LettuceConnection,org.springframework.data.redis.core.RedisOperations,com.lambdaworks.redis.RedisClient (OnClassCondition)
SecurityAutoConfiguration
- required #ConditionalOnClass classes not found: org.springframework.security.authentication.AuthenticationManager (OnClassCondition)
ThymeleafAutoConfiguration.ThymeleafSecurityDialectConfiguration
- required #ConditionalOnClass classes not found: org.thymeleaf.extras.springsecurity3.dialect.SpringSecurityDialect (OnClassCondition)
ThymeleafAutoConfiguration.ThymeleafWebLayoutConfiguration
- required #ConditionalOnClass classes not found: nz.net.ultraq.thymeleaf.LayoutDialect (OnClassCondition)
EmbeddedServletContainerAutoConfiguration.EmbeddedJetty
- required #ConditionalOnClass classes not found: org.eclipse.jetty.server.Server,org.eclipse.jetty.util.Loader (OnClassCondition)
EmbeddedServletContainerAutoConfiguration.EmbeddedTomcat
- #ConditionalOnClass classes found: javax.servlet.Servlet,org.apache.catalina.startup.Tomcat (OnClassCondition)
- #ConditionalOnMissingBean (types: org.springframework.boot.context.embedded.EmbeddedServletContainerFactory; SearchStrategy: current) found the following [servletContainer] (OnBeanCondition)
MultipartAutoConfiguration
- #ConditionalOnClass classes found: javax.servlet.Servlet,org.springframework.web.multipart.support.StandardServletMultipartResolver (OnClassCondition)
- #ConditionalOnBean (types: javax.servlet.MultipartConfigElement; SearchStrategy: all) found no beans (OnBeanCondition)
WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#beanNameViewResolver
- #ConditionalOnBean (types: org.springframework.web.servlet.View; SearchStrategy: all) found no beans (OnBeanCondition)
WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#viewResolver
- #ConditionalOnBean (types: org.springframework.web.servlet.View; SearchStrategy: all) found no beans (OnBeanCondition)
WebSocketAutoConfiguration
- required #ConditionalOnClass classes not found: org.springframework.web.socket.WebSocketHandler (OnClassCondition)
Here is the stack trace, just a standard NullPointerException. The ConfigurationSetting has been instantiated (according to debugger) prior to this call. But when the FileDownloadService is created, the ConfigurationSetting is null.
Caused by: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'fileDownloadService' defined in file
[.cnet/OFAC/out/production/OFAC/com/company/product/service/FileDownloadService.class]:
Instantiation of bean failed; nested exception is
org.springframework.beans.BeanInstantiationException: Could not
instantiate bean class
[com.company.product.service.FileDownloadService]: Constructor threw
exception; nested exception is java.lang.NullPointerException at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1076)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1021)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1014)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:957)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:855)
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 18 more Caused by:
org.springframework.beans.BeanInstantiationException: Could not
instantiate bean class
[com.company.product.service.FileDownloadService]: Constructor threw
exception; nested exception is java.lang.NullPointerException at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:164)
at
org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1069)
... 29 more Caused by: java.lang.NullPointerException at
com.company.product.service.FileDownloadService.(FileDownloadService.java:29)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method) at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148)
... 31 more
Now I swear after some very good StackOverflow help last week this was all working. However, I cannot run my app now because the null pointer on startup.

Answer 1

Sorry, should have seen this earlier but the stack trace makes it obvious: it's not a spring autowiring error because spring never gets to see an instance of your FileDownloadService - you are using an uninitialized field in its constructor. If you want to refer to an #Autowired field in an initializer, use #PostConstruct not the constructor.