java - java spring注解报错，@OneToMany和@ManyToOne关系报错

Question

关系是这样的：

我的超类（用户）是这样的，在这里我使用@OneToMany 发送与我的子类（雇主）的关系

我的子类（雇主）是这样的，在这里我从超类（用户）获得与@ManyToOne 的关系。

我使用 Dto 将我在数据库中关联的表保存在一个类中。

我创建了一个数据访问对象（DAO）来将我的数据传输到 Dto 类中的字段，并编写了一个这样的查询。

但它给了我一个 id 错误，因为我已经从 User 类中提取了雇主类的 id。

2021-06-02 01:32:59.651  INFO 11760 --- [  restartedMain] kodlamaio.hrms.HrmsApplication           : No active profile set, falling back to default profiles: default
2021-06-02 01:32:59.712  INFO 11760 --- [  restartedMain] o.s.b.devtools.restart.ChangeableUrls    : The Class-Path manifest attribute in D:\web-developeer files\mail.jar referenced one or more files that do not exist: file:/D:/web-developeer%20files/activation.jar
2021-06-02 01:32:59.713  INFO 11760 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2021-06-02 01:32:59.713  INFO 11760 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2021-06-02 01:33:00.596  INFO 11760 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2021-06-02 01:33:00.650  INFO 11760 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 44 ms. Found 1 JPA repository interfaces.
2021-06-02 01:33:01.216  INFO 11760 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8090 (http)
2021-06-02 01:33:01.228  INFO 11760 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2021-06-02 01:33:01.229  INFO 11760 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.45]
2021-06-02 01:33:01.372  INFO 11760 --- [  restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2021-06-02 01:33:01.372  INFO 11760 --- [  restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1658 ms
2021-06-02 01:33:01.519  INFO 11760 --- [  restartedMain] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2021-06-02 01:33:01.573  INFO 11760 --- [  restartedMain] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.4.30.Final
2021-06-02 01:33:01.704  INFO 11760 --- [  restartedMain] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2021-06-02 01:33:01.818  INFO 11760 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2021-06-02 01:33:02.014  INFO 11760 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2021-06-02 01:33:02.034  INFO 11760 --- [  restartedMain] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
2021-06-02 01:33:03.614  INFO 11760 --- [  restartedMain] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2021-06-02 01:33:03.623  INFO 11760 --- [  restartedMain] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2021-06-02 01:33:03.657  INFO 11760 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : LiveReload server is running on port 35729
2021-06-02 01:33:03.841  WARN 11760 --- [  restartedMain] 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
2021-06-02 01:33:03.986  INFO 11760 --- [  restartedMain] pertySourcedRequestMappingHandlerMapping : Mapped URL path [/v2/api-docs] onto method [springfox.documentation.swagger2.web.Swagger2Controller#getDocumentation(String, HttpServletRequest)]
2021-06-02 01:33:04.079  INFO 11760 --- [  restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2021-06-02 01:33:04.416  WARN 11760 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'employerDao' defined in kodlamaio.hrms.dataAccess.abstracts.EmployerDao defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: This class [class kodlamaio.hrms.entities.Employer] does not define an IdClass
2021-06-02 01:33:04.416  INFO 11760 --- [  restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'
2021-06-02 01:33:04.418  INFO 11760 --- [  restartedMain] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2021-06-02 01:33:04.423  INFO 11760 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2021-06-02 01:33:04.427  INFO 11760 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.
2021-06-02 01:33:04.430  INFO 11760 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]

标签： javaspringannotationsone-to-manymany-to-one