java - 为什么在 JHipster 中创建 Spring Bean 时出现错误？

Question

我刚刚使用 yo jhipster 在一台新机器上从头开始创建了一个项目，在运行 npm install、bower install 等之后，它提供了许多异常。它似乎无法访问 mysql 数据库，但我还没有对它进行任何更改，所以没有理由它不应该工作，因为它应该是开箱即用的。有人知道这个问题的解决办法吗？

错误:

[DEBUG] io.github.jhipster.loaded.instrument.JHipsterLoadtimeInstrumentationPlugin - Patch - Clear cache org.springframework.core.LocalVariableTableParameterNameDiscoverer
[INFO] com.comcast.castit.Application - Starting Application on HQSWL-C006246 with PID 5872 (C:\CastIT\target\classes started by sparri202 in C:\CastIT)
[DEBUG] com.comcast.castit.Application - Running with Spring Boot v1.1.7.RELEASE, Spring v4.0.7.RELEASE
[DEBUG] io.github.jhipster.loaded.instrument.JHipsterLoadtimeInstrumentationPlugin - Patch - Rewrite org.springframework.aop.framework.AdvisedSupport.getInterceptorsAndDynamicInterceptionAdvice() method
[DEBUG] org.jboss.logging - Logging Provider: org.jboss.logging.Slf4jLoggerProvider
[DEBUG] com.comcast.castit.config.AsyncConfiguration - Creating Async Task Executor
[DEBUG] io.github.jhipster.loaded.instrument.JHipsterLoadtimeInstrumentationPlugin - Patch - Rewrite org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory() method
[DEBUG] io.github.jhipster.loaded.instrument.JHipsterLoadtimeInstrumentationPlugin - Patch - Rewrite org.springframework.security.access.method.DelegatingMethodSecurityMetadataSource.getAttributes() method
[DEBUG] com.comcast.castit.config.DatabaseConfiguration - Configuring Datasource
[DEBUG] com.comcast.castit.config.DatabaseConfiguration - Configuring Liquibase
[DEBUG] io.github.jhipster.loaded.instrument.JHipsterLoadtimeInstrumentationPlugin - Patch - Rewrite liquibase.ext.hibernate.snapshot.TableSnapshotGenerator.snapshotObject() method
[WARN] org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.ryantenney.metrics.spring.config.annotation.DelegatingMetricsConfiguration': BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cache.annotation.ProxyCachingConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.util.Collection org.springframework.cache.annotation.AbstractCachingConfiguration.cacheManagerBeans; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in class path resource [com/comcast/castit/config/DatabaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.DatabaseException: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:471) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:370) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1095) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:990) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:232) ~[spring-context-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:620) ~[spring-context-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:467) ~[spring-context-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:109) [spring-boot-1.1.7.RELEASE.jar:1.1.7.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691) [spring-boot-1.1.7.RELEASE.jar:1.1.7.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320) [spring-boot-1.1.7.RELEASE.jar:1.1.7.RELEASE]
    at com.comcast.castit.Application.main(Application.java:59) [classes/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cache.annotation.ProxyCachingConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.util.Collection org.springframework.cache.annotation.AbstractCachingConfiguration.cacheManagerBeans; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in class path resource [com/comcast/castit/config/DatabaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.DatabaseException: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:293) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1186) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:370) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1095) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:990) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:101) ~[spring-aop-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator.findCandidateAdvisors(AnnotationAwareAspectJAutoProxyCreator.java:85) ~[spring-aop-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103) ~[spring-aop-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:289) ~[spring-aop-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:959) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:931) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:465) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    ... 20 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.util.Collection org.springframework.cache.annotation.AbstractCachingConfiguration.cacheManagerBeans; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in class path resource [com/comcast/castit/config/DatabaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.DatabaseException: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:509) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:290) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    ... 44 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in class path resource [com/comcast/castit/config/DatabaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.DatabaseException: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:356) ~[spring-orm-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1186) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:370) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1095) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:990) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1021) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:916) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:862) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:481) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    ... 46 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in class path resource [com/comcast/castit/config/DatabaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.DatabaseException: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1554) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findDefaultEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:549) ~[spring-orm-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:515) ~[spring-orm-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.resolveEntityManager(PersistenceAnnotationBeanPostProcessor.java:682) ~[spring-orm-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.getResourceToInject(PersistenceAnnotationBeanPostProcessor.java:655) ~[spring-orm-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:155) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:353) ~[spring-orm-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    ... 66 common frames omitted
Caused by: liquibase.exception.DatabaseException: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
    at liquibase.integration.spring.SpringLiquibase.afterPropertiesSet(SpringLiquibase.java:301) ~[liquibase-core-3.1.1.jar:na]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1613) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1550) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
    ... 81 common frames omitted
Caused by: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
    at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:192) ~[HikariCP-1.4.0.jar:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:91) ~[HikariCP-1.4.0.jar:na]
    at liquibase.integration.spring.SpringLiquibase.afterPropertiesSet(SpringLiquibase.java:296) ~[liquibase-core-3.1.1.jar:na]
    ... 83 common frames omitted
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
    at sun.reflect.GeneratedConstructorAccessor32.newInstance(Unknown Source) ~[na:na]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.7.0_60]
    at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[na:1.7.0_60]
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrConstructorNewInstance(ReflectiveInterceptor.java:1002) ~[springloaded-1.2.0.RELEASE.jar:1.2.0.RELEASE]
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:408) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1137) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:355) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2490) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2527) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2309) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46) ~[mysql-connector-java-5.1.32.jar:na]
    at sun.reflect.GeneratedConstructorAccessor28.newInstance(Unknown Source) ~[na:na]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.7.0_60]
    at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[na:1.7.0_60]
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrConstructorNewInstance(ReflectiveInterceptor.java:1002) ~[springloaded-1.2.0.RELEASE.jar:1.2.0.RELEASE]
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:408) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:419) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:344) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:441) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:139) ~[mysql-connector-java-5.1.32.jar:na]
    at com.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:109) ~[mysql-connector-java-5.1.32.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.addConnection(HikariPool.java:378) ~[HikariCP-1.4.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.access$400(HikariPool.java:61) ~[HikariCP-1.4.0.jar:na]
    at com.zaxxer.hikari.pool.HikariPool$1AddConnection.run(HikariPool.java:302) ~[HikariCP-1.4.0.jar:na]
...
    Caused by: java.net.ConnectException: Connection refused: connect
...
        at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:258) ~[mysql-connector-java-5.1.32.jar:na]
        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:305) ~[mysql-connector-java-5.1.32.jar:na]
        ... 23 common frames omitted
    [ERROR] org.springframework.boot.SpringApplication - Application startup failed
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.ryantenney.metrics.spring.config.annotation.DelegatingMetricsConfiguration': BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cache.annotation.ProxyCachingConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.util.Collection org.springframework.cache.annotation.AbstractCachingConfiguration.cacheManagerBeans; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheConfiguration': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in class path resource [com/comcast/castit/config/DatabaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.DatabaseException: java.sql.SQLException: Timeout of 30000ms encountered waiting for connection.
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:471) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.7.RELEASE.jar:4.0.7.RELEASE]...

还有更多，但我的字符数量有限。相关代码:(application-dev.yml)

server:
    port: 8080

spring:
    profiles: dev

    datasource:
        dataSourceClassName: com.mysql.jdbc.jdbc2.optional.MysqlDataSource
        url: jdbc:mysql://localhost:3306/CastIT
        databaseName: 
        serverName: 
        username: root
        password: 
        cachePrepStmts: true
        prepStmtCacheSize: 250
        prepStmtCacheSqlLimit: 2048
        useServerPrepStmts: true

    jpa:
        database-platform: org.hibernate.dialect.MySQLInnoDBDialect
        database: MYSQL
        openInView: false
        show_sql: true
        generate-ddl: false
        hibernate:
            ddl-auto: none
            naming-strategy: org.hibernate.cfg.EJB3NamingStrategy
        properties:
            hibernate.cache.use_second_level_cache: true
            hibernate.cache.use_query_cache: false
            hibernate.generate_statistics: true
            hibernate.cache.region.factory_class: org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory

    mail:
        baseUrl: http://localhost:8080

    thymeleaf:
        mode: XHTML
        cache: false
        viewNames: error

metrics:
    jmx.enabled: true
    graphite:
        enabled: false
        host: localhost
        port: 2003

cache:
    timeToLiveSeconds: 3600
    ehcache:
        maxBytesLocalHeap: 16M

# You can add as many as folders to watch
# You just need to add a dash + the directory to watch
hotReload:
    enabled: true
    package:
      project: com.comcast.castit
      domain: com.comcast.castit.domain
      restdto: com.comcast.castit.web.rest.dto
    liquibase:
      defaultCatalogName: CastIT
      defaultSchema: CastIT
      excludeTables: T_AUTHORITY,T_PERSISTENT_AUDIT_EVENT,T_PERSISTENT_AUDIT_EVENT_DATA,T_PERSISTENT_TOKEN,T_USER,T_USER_AUTHORITY
    watchdir:
      - target/classes

Answer 1

正如异常(exception)所说:


引起原因:java.net.ConnectException:连接被拒绝:连接


这是因为你的MySQL连接没有打开。也许它没有运行。也许 YAML 文件中的参数不正确:您有“CastIT”数据库吗？用户“root”可以在没有密码的情况下访问它吗？您可以尝试连接MySQL Workbench。