我在eclipse中基于mariadb,hibernate,spring-boot和其他常见库编写了一个Spring小型项目。当我正常运行应用程序时,它会在大约十秒钟内完成启动:
2019-11-07 19:53:47.539 INFO 2887 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.3.11.Final}
2019-11-07 19:53:47.541 INFO 2887 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-11-07 19:53:47.687 INFO 2887 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
2019-11-07 19:53:47.799 INFO 2887 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MariaDB103Dialect
2019-11-07 19:53:55.078 INFO 2887 --- [ main] o.h.t.schema.internal.SchemaCreatorImpl : HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptsourceInputNonExistentImpl@3400d6fa'
2019-11-07 19:53:55.083 INFO 2887 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2019-11-07 19:53:55.336 INFO 2887 --- [ main] o.h.h.i.QueryTranslatorFactoryInitiator : HHH000397: Using ASTQueryTranslatorFactory
2019-11-07 19:53:55.681 INFO 2887 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2019-11-07 19:53:55.706 WARN 2887 --- [ main] aWebConfiguration$JpaWebMvcConfiguration : spring.jpa.open-in-view is enabled by default. Therefore,database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2019-11-07 19:53:55.893 INFO 2887 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2019-11-07 19:53:55.897 INFO 2887 --- [ main] petmenu.Application : Started Application in 10.373 seconds (JVM running for 11.18)
当我在“调试”模式下启动它时,它需要十倍的时间。
2019-11-07 19:36:40.265 INFO 2108 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.3.11.Final}
2019-11-07 19:36:40.267 INFO 2108 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-11-07 19:36:40.615 INFO 2108 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
2019-11-07 19:36:40.792 INFO 2108 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MariaDB103Dialect
2019-11-07 19:36:48.625 INFO 2108 --- [ main] o.h.t.schema.internal.SchemaCreatorImpl : HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptsourceInputNonExistentImpl@57afe44b'
2019-11-07 19:36:48.628 INFO 2108 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2019-11-07 19:36:48.972 INFO 2108 --- [ main] o.h.h.i.QueryTranslatorFactoryInitiator : HHH000397: Using ASTQueryTranslatorFactory
2019-11-07 19:37:44.033 INFO 2108 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2019-11-07 19:37:51.931 WARN 2108 --- [ main] aWebConfiguration$JpaWebMvcConfiguration : spring.jpa.open-in-view is enabled by default. Therefore,database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2019-11-07 19:38:19.658 INFO 2108 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2019-11-07 19:38:19.722 INFO 2108 --- [ main] petmenu.Application : Started Application in 103.693 seconds (JVM running for 105.206)
我注意到该任务特别耗时近一分钟,而在正常启动时是瞬时的。
2019-11-07 19:36:48.972 INFO 2108 --- [ main] o.h.h.i.QueryTranslatorFactoryInitiator : HHH000397: Using ASTQueryTranslatorFactory