无法建立Hibernate SessionFactory没有明显原因

Question

我真的在弹簧靴和冬眠的问题上挣扎。我收到此错误：

AnnotationConfigServletWebServerApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory

我以为该应用程序无法连接到mysql数据库，但事实并非如此，因为flyway能够连接并运行迁移脚本。

[INFO ] 2020-01-21_11:18:39.293 [main] VersionPrinter - Flyway Community Edition 5.0.7 by Boxfuse
[INFO ] 2020-01-21_11:18:39.304 [main] HikariDataSource - HikariPool-1 - Starting...
[INFO ] 2020-01-21_11:18:39.534 [main] HikariDataSource - HikariPool-1 - Start completed.
[INFO ] 2020-01-21_11:18:39.548 [main] DatabaseFactory - Database: jdbc:mysql://someIpHere:3306/someDatabaseNameHere (MySQL 5.6)
[INFO ] 2020-01-21_11:18:40.357 [main] DbValidate - Successfully validated 354 migrations (execution time 00:00.729s)
[INFO ] 2020-01-21_11:18:40.434 [main] DbMigrate - Current version of schema `someDatabaseNameHere `: 339
[WARN ] 2020-01-21_11:18:40.434 [main] DbMigrate - outOfOrder mode is active. Migration of schema `someDatabaseNameHere` may not be reproducible.
[INFO ] 2020-01-21_11:18:40.438 [main] DbMigrate - Schema `someDatabaseNameHere ` is up to date. No migration necessary.
[INFO ] 2020-01-21_11:18:40.622 [main] LocalContainerEntityManagerFactoryBean - Building JPA container EntityManagerFactory for persistence unit 'default'
[INFO ] 2020-01-21_11:18:40.640 [main] LogHelper - HHH000204: Processing PersistenceUnitInfo [
    name: default

奇怪的是，如果我在另一台机器上运行完全相同的jar，它将起作用。日志看起来一样，直到我得到错误。

错误日志：

[INFO ] 2020-01-21_11:18:40.622 [main] LocalContainerEntityManagerFactoryBean - Building JPA container EntityManagerFactory for persistence unit 'default'
[INFO ] 2020-01-21_11:18:40.640 [main] LogHelper - HHH000204: Processing PersistenceUnitInfo [
    name: default
    ...]
[INFO ] 2020-01-21_11:18:40.718 [main] Version - HHH000412: Hibernate Core {5.2.14.Final}
[INFO ] 2020-01-21_11:18:40.720 [main] Environment - HHH000206: hibernate.properties not found
[INFO ] 2020-01-21_11:18:40.764 [main] Version - HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
[INFO ] 2020-01-21_11:18:41.242 [main] Dialect - HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
[WARN ] 2020-01-21_11:18:42.253 [main] AnnotationConfigServletWebServerApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
[INFO ] 2020-01-21_11:18:42.254 [main] HikariDataSource - HikariPool-1 - Shutdown initiated...
[INFO ] 2020-01-21_11:18:42.264 [main] HikariDataSource - HikariPool-1 - Shutdown completed.
[INFO ] 2020-01-21_11:18:42.266 [main] StandardService - Stopping service [Tomcat]

没有错误日志：

[INFO ] 2020-01-21_12:19:31.394 [main] LocalContainerEntityManagerFactoryBean - Building JPA container EntityManagerFactory for persistence unit 'default'
[INFO ] 2020-01-21_12:19:31.417 [main] LogHelper - HHH000204: Processing PersistenceUnitInfo [
    name: default
    ...]
[INFO ] 2020-01-21_12:19:31.510 [main] Version - HHH000412: Hibernate Core {5.2.14.Final}
[INFO ] 2020-01-21_12:19:31.512 [main] Environment - HHH000206: hibernate.properties not found
[INFO ] 2020-01-21_12:19:31.564 [main] Version - HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
[INFO ] 2020-01-21_12:19:31.986 [main] Dialect - HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
[INFO ] 2020-01-21_12:19:34.093 [main] LocalContainerEntityManagerFactoryBean - Initialized JPA EntityManagerFactory for persistence unit 'default'
[INFO ] 2020-01-21_12:19:34.499 [main] cluster - Cluster created with settings {hosts=[someHost:27017, someHost:27017, someHost:27017, someHost:27017, someHost:27017], mode=MULTIPLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
[INFO ] 2020-01-21_12:19:34.500 [main] cluster - Adding discovered server someHost:27017 to client view of cluster

我真的很坚持。即使在以日志记录级别TRACE运行时，也找不到PersistenceException的实际原因。同样，我在Internet上的任何地方都找不到这种确切的异常行为，大多数情况下，这与错误的配置有关，并且日志提供了其他详细信息。它必须与机器有关，但是我无法弄清楚什么，也无法从日志中获取更多信息。

Answer 1

如果在外部服务器上运行它，则下载最新版本的Tomcat。它的版本可能不匹配。this might help you