когда я добавляю эту строку кода в мои application.properties "spring.jpa.hibernate.ddl-auto = create" таблица создается, но в таблицу ничего не записывается.
Ни я не вижу нет ни ошибки в консоли, ни данных подтверждения, записанных в таблицу. посмотрите:
2020-04-29 13:14:45.443 INFO 5096 --- [ main] c.m.j.d.ThirdJpaMysqlConnectApplication : Starting ThirdJpaMysqlConnectApplication on LAPTOP-RL0JPU7P with PID 5096 (D:\28MINUTES\third-jpa-mysql-connect\target\classes started by j in D:\28MINUTES\third-jpa-mysql-connect)
2020-04-29 13:14:45.452 INFO 5096 --- [ main] c.m.j.d.ThirdJpaMysqlConnectApplication : No active profile set, falling back to default profiles: default
2020-04-29 13:14:47.210 INFO 5096 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2020-04-29 13:14:47.213 INFO 5096 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JDBC repositories in DEFAULT mode.
2020-04-29 13:14:47.250 INFO 5096 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 27ms. Found 0 JDBC repository interfaces.
2020-04-29 13:14:47.322 INFO 5096 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2020-04-29 13:14:47.325 INFO 5096 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-04-29 13:14:47.339 INFO 5096 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 4ms. Found 0 JPA repository interfaces.
2020-04-29 13:14:49.262 INFO 5096 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-04-29 13:14:49.288 INFO 5096 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-04-29 13:14:49.289 INFO 5096 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.33]
2020-04-29 13:14:49.591 INFO 5096 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-04-29 13:14:49.591 INFO 5096 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3956 ms
2020-04-29 13:14:49.977 INFO 5096 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-04-29 13:14:50.109 INFO 5096 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.12.Final
2020-04-29 13:14:50.395 INFO 5096 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-04-29 13:14:50.650 INFO 5096 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-04-29 13:14:51.654 INFO 5096 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-04-29 13:14:51.705 INFO 5096 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
2020-04-29 13:14:56.356 INFO 5096 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2020-04-29 13:14:56.369 INFO 5096 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2020-04-29 13:14:56.661 WARN 5096 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : 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
2020-04-29 13:14:57.006 INFO 5096 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-04-29 13:14:57.875 INFO 5096 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2020-04-29 13:14:57.882 INFO 5096 --- [ main] c.m.j.d.ThirdJpaMysqlConnectApplication : Started ThirdJpaMysqlConnectApplication in 13.571 seconds (JVM running for 14.863)
2020-04-29 13:14:58.506 INFO 5096 --- [ main] ication$$EnhancerBySpringCGLIB$$c686db47 : ****course 1001 --->null****
NEXT TO 1001--> I SHOULD SEE THE DATA INSTEAD OF "NULL".