我正在自学弹簧启动并尝试做一个web项目，在这种情况下自动发布到url（/ messages）并返回结果。它工作正常，直到我想将数据保存到数据库。有嵌套的Bean创建异常，我无法弄清楚出了什么问题。我从2-3天开始一直在使用spring，并且一直在尝试JPA，DAO hibernate等连接到数据库。我已经在下面上传了我的项目，因此很容易导入和检查。任何有关这方面的帮助都会有很大帮助。任何了解错误和故障排除方法的建议都可以帮助我更好地学习它。我在互联网上搜索资源但无法理解为什么会发生这种情况。
https://drive.google.com/file/d/0ByA5YjrulxrGdk05SjJjNU55LUE/view?usp=sharing
Stack Trace如下：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.3.5.RELEASE)
2016-06-29 07:36:51.479 INFO 2008 --- [ main] starter.MarkableApplication : Starting MarkableApplication on Kranthi with PID 2008 (C:\Users\Kranthi\mars\workspace\Markable\target\classes started by Kranthi in C:\Users\Kranthi\mars\workspace\Markable)
2016-06-29 07:36:51.488 INFO 2008 --- [ main] starter.MarkableApplication : The following profiles are active: base
2016-06-29 07:36:51.632 INFO 2008 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@525b461a: startup date [Wed Jun 29 07:36:51 MST 2016]; root of context hierarchy
2016-06-29 07:36:54.531 INFO 2008 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [class org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$40386111] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2016-06-29 07:36:55.150 INFO 2008 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2016-06-29 07:36:55.169 INFO 2008 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2016-06-29 07:36:55.170 INFO 2008 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.33
2016-06-29 07:36:55.331 INFO 2008 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2016-06-29 07:36:55.332 INFO 2008 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3710 ms
2016-06-29 07:36:55.779 INFO 2008 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2016-06-29 07:36:55.786 INFO 2008 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2016-06-29 07:36:55.787 INFO 2008 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2016-06-29 07:36:55.787 INFO 2008 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2016-06-29 07:36:55.787 INFO 2008 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2016-06-29 07:36:56.147 INFO 2008 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2016-06-29 07:36:56.164 INFO 2008 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2016-06-29 07:36:56.293 INFO 2008 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {4.3.11.Final}
2016-06-29 07:36:56.296 INFO 2008 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2016-06-29 07:36:56.298 INFO 2008 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2016-06-29 07:36:56.583 INFO 2008 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
2016-06-29 07:36:57.066 INFO 2008 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
2016-06-29 07:36:57.115 INFO 2008 --- [ main] o.h.h.i.ast.ASTQueryTranslatorFactory : HHH000397: Using ASTQueryTranslatorFactory
2016-06-29 07:36:57.392 INFO 2008 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000227: Running hbm2ddl schema export
2016-06-29 07:36:57.395 INFO 2008 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete
2016-06-29 07:36:57.480 WARN 2008 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void controller.MessageController.setMessageService(service.MessageService); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void service.MessageService.setMessageRepository(repository.MessageRepository); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [repository.MessageRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
2016-06-29 07:36:57.484 INFO 2008 --- [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2016-06-29 07:36:57.485 INFO 2008 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000227: Running hbm2ddl schema export
2016-06-29 07:36:57.485 INFO 2008 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete
2016-06-29 07:36:57.500 INFO 2008 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat
2016-06-29 07:36:57.517 ERROR 2008 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void controller.MessageController.setMessageService(service.MessageService); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void service.MessageService.setMessageRepository(repository.MessageRepository); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [repository.MessageRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at starter.MarkableApplication.main(MarkableApplication.java:25) [classes/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void controller.MessageController.setMessageService(service.MessageService); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void service.MessageService.setMessageRepository(repository.MessageRepository); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [repository.MessageRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:661) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
... 17 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void service.MessageService.setMessageRepository(repository.MessageRepository); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [repository.MessageRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:618) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
... 19 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void service.MessageService.setMessageRepository(repository.MessageRepository); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [repository.MessageRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:661) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
... 30 common frames omitted
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [repository.MessageRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:618) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
... 32 common frames omitted
2016-06-29 07:36:57.520 INFO 2008 --- [ main] .b.l.ClasspathLoggingApplicationListener : Application failed to start with classpath: [file:/C:/Users/Kranthi/mars/workspace/Markable/target/classes/, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter-web/1.3.5.RELEASE/spring-boot-starter-web-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter/1.3.5.RELEASE/spring-boot-starter-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot/1.3.5.RELEASE/spring-boot-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/1.3.5.RELEASE/spring-boot-autoconfigure-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter-logging/1.3.5.RELEASE/spring-boot-starter-logging-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/ch/qos/logback/logback-classic/1.1.7/logback-classic-1.1.7.jar, file:/C:/Users/Kranthi/.m2/repository/ch/qos/logback/logback-core/1.1.7/logback-core-1.1.7.jar, file:/C:/Users/Kranthi/.m2/repository/org/slf4j/jul-to-slf4j/1.7.21/jul-to-slf4j-1.7.21.jar, file:/C:/Users/Kranthi/.m2/repository/org/slf4j/log4j-over-slf4j/1.7.21/log4j-over-slf4j-1.7.21.jar, file:/C:/Users/Kranthi/.m2/repository/org/yaml/snakeyaml/1.16/snakeyaml-1.16.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/1.3.5.RELEASE/spring-boot-starter-tomcat-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.0.33/tomcat-embed-core-8.0.33.jar, file:/C:/Users/Kranthi/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/8.0.33/tomcat-embed-el-8.0.33.jar, file:/C:/Users/Kranthi/.m2/repository/org/apache/tomcat/embed/tomcat-embed-logging-juli/8.0.33/tomcat-embed-logging-juli-8.0.33.jar, file:/C:/Users/Kranthi/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/8.0.33/tomcat-embed-websocket-8.0.33.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter-validation/1.3.5.RELEASE/spring-boot-starter-validation-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/hibernate/hibernate-validator/5.2.4.Final/hibernate-validator-5.2.4.Final.jar, file:/C:/Users/Kranthi/.m2/repository/javax/validation/validation-api/1.1.0.Final/validation-api-1.1.0.Final.jar, file:/C:/Users/Kranthi/.m2/repository/com/fasterxml/classmate/1.1.0/classmate-1.1.0.jar, file:/C:/Users/Kranthi/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.6.6/jackson-databind-2.6.6.jar, file:/C:/Users/Kranthi/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.6.6/jackson-annotations-2.6.6.jar, file:/C:/Users/Kranthi/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.6.6/jackson-core-2.6.6.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-web/4.2.6.RELEASE/spring-web-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-aop/4.2.6.RELEASE/spring-aop-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-beans/4.2.6.RELEASE/spring-beans-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-context/4.2.6.RELEASE/spring-context-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-webmvc/4.2.6.RELEASE/spring-webmvc-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-expression/4.2.6.RELEASE/spring-expression-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-core/4.2.6.RELEASE/spring-core-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/mysql/mysql-connector-java/5.1.38/mysql-connector-java-5.1.38.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter-data-jpa/1.3.5.RELEASE/spring-boot-starter-data-jpa-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter-aop/1.3.5.RELEASE/spring-boot-starter-aop-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/aspectj/aspectjweaver/1.8.9/aspectjweaver-1.8.9.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/boot/spring-boot-starter-jdbc/1.3.5.RELEASE/spring-boot-starter-jdbc-1.3.5.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/apache/tomcat/tomcat-jdbc/8.0.33/tomcat-jdbc-8.0.33.jar, file:/C:/Users/Kranthi/.m2/repository/org/apache/tomcat/tomcat-juli/8.0.33/tomcat-juli-8.0.33.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-jdbc/4.2.6.RELEASE/spring-jdbc-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/hibernate/hibernate-entitymanager/4.3.11.Final/hibernate-entitymanager-4.3.11.Final.jar, file:/C:/Users/Kranthi/.m2/repository/org/jboss/logging/jboss-logging/3.3.0.Final/jboss-logging-3.3.0.Final.jar, file:/C:/Users/Kranthi/.m2/repository/org/jboss/logging/jboss-logging-annotations/1.2.0.Beta1/jboss-logging-annotations-1.2.0.Beta1.jar, file:/C:/Users/Kranthi/.m2/repository/org/hibernate/hibernate-core/4.3.11.Final/hibernate-core-4.3.11.Final.jar, file:/C:/Users/Kranthi/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar, file:/C:/Users/Kranthi/.m2/repository/org/jboss/jandex/1.1.0.Final/jandex-1.1.0.Final.jar, file:/C:/Users/Kranthi/.m2/repository/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar, file:/C:/Users/Kranthi/.m2/repository/xml-apis/xml-apis/1.0.b2/xml-apis-1.0.b2.jar, file:/C:/Users/Kranthi/.m2/repository/org/hibernate/common/hibernate-commons-annotations/4.0.5.Final/hibernate-commons-annotations-4.0.5.Final.jar, file:/C:/Users/Kranthi/.m2/repository/org/hibernate/javax/persistence/hibernate-jpa-2.1-api/1.0.0.Final/hibernate-jpa-2.1-api-1.0.0.Final.jar, file:/C:/Users/Kranthi/.m2/repository/org/javassist/javassist/3.18.1-GA/javassist-3.18.1-GA.jar, file:/C:/Users/Kranthi/.m2/repository/javax/transaction/javax.transaction-api/1.2/javax.transaction-api-1.2.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/data/spring-data-jpa/1.9.4.RELEASE/spring-data-jpa-1.9.4.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/data/spring-data-commons/1.11.4.RELEASE/spring-data-commons-1.11.4.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-orm/4.2.6.RELEASE/spring-orm-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-tx/4.2.6.RELEASE/spring-tx-4.2.6.RELEASE.jar, file:/C:/Users/Kranthi/.m2/repository/org/slf4j/slf4j-api/1.7.21/slf4j-api-1.7.21.jar, file:/C:/Users/Kranthi/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.21/jcl-over-slf4j-1.7.21.jar, file:/C:/Users/Kranthi/.m2/repository/org/springframework/spring-aspects/4.2.6.RELEASE/spring-aspects-4.2.6.RELEASE.jar]
Application.properties：
spring.datasource.url= jdbc:mysql://localhost:3306/messages
spring.datasource.username=root
spring.datasource.password=X9pgptjaud6@
spring.jpa.hibernate.ddl-auto=create-drop
spring.profiles.active=base
答案 0 :(得分：0)
@Componentscan包列表中缺少您的存储库包。此外，您的MessageRepository课程缺少@Repository注释。
但有一个建议是，为所有其他软件包提供一个通用软件包，例如com.demo.service，com.demo.repository等。现在您可以使用@Componentscan(basePackages = "com.demo")。所以，你不会“意外”忘记任何包裹。但是，请将您的应用程序类保留在公共包（ com.demo ）本身。这样的事情。
package com.demo;
@SpringBootApplication
@EnableScheduling
@ComponentScan(basePackages = "com.demo")
public class MarkableApplication {
public static void main(String[] args) {
....
}
我不确定，为什么这是必要的。但我过去也遇到麻烦Application.class在单独的包装中。在我搬到普通包装后，我能够建立。
另外，将@Autowired添加到MessageService类的字段中，然后摆脱setter方法。
@Autorwired
private MessageRepository messagerepository;