Question

我在应用程序中使用spring boot和spring data jpa。当我使用由jpa提供的自动配置的entityManagerFactoryBean时，出现正在生成的查询的同时出现以下错误。

  select
        simentity0_.simid as simid1_3_,
        simentity0_.service_number as service_number2_3_,
        simentity0_.sim_number as sim_number3_3_,
        simentity0_.sim_status as sim_status4_3_ 
    from
        sim simentity0_ 
    where
        simentity0_.sim_number=? 
        and simentity0_.service_number=?
2018-11-16 14:26:40.824  WARN 10784 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 904, SQLState: 42000
2018-11-16 14:26:40.824 ERROR 10784 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : ORA-00904: "SIMENTITY0_"."SERVICE_NUMBER": invalid identifier

但是当我使用以下Java配置为entityManagerFactoryBean提供显式配置时，效果很好。

@Bean
public LocalContainerEntityManagerFactoryBean getEntityManager() {
        LocalContainerEntityManagerFactoryBean bean = new 

    LocalContainerEntityManagerFactoryBean();
            bean.setPackagesToScan("com.mypackage.entity");
            bean.setDataSource(getDataSource());
            bean.setJpaVendorAdapter(getJpaVendor());
            return bean;
        }

下面是在工作时生成的查询。

 select simentity0_.simID as simID1_3_,
    simentity0_.serviceNumber as serviceN2_3_, 
    simentity0_.simNumber as simNumbe3_3_, 
    simentity0_.simStatus as simStatu4_3_ 
   from SIM 
    simentity0_ 
   where 
    simentity0_.simNumber=? 
    and simentity0_.serviceNumber=?

这是Entity Bean和应用程序属性文件。

Application.properties

spring.datasource.url=jdbc:oracle:thin:@localhost:1521:XE
spring.jpa.show-sql=true
spring.datasource.username=nawnit.sen
spring.datasource.password=pass

SimEntity .java

@Entity
@Table(name = "SIM")
public class SimEntity {
    @Id
    private Integer simID;
    private Long serviceNumber;
    private Long simNumber;
    private String simStatus;

query.sql

create table SIM (
    simID integer primary key,
    serviceNumber integer not null,
    simNumber integer not null,
    simStatus varchar2(10) not null
);

在第一个查询中查看列名中的_。我不明白为什么它会出现在查询中。可能是因为我没有在第一种情况下（使用autoConfiguredBean的情况下）在属性文件中提供packageToScan属性。

Answer 1

原因是Spring Boot自动配置使用SpringPhysicalNamingStrategy，但是默认的Hibernate是PhysicalNamingStrategyStandardImpl

您可以通过属性指定要使用的命名策略，例如spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl属性

Spring Data JPA不适用于自动配置的entityManagerFactory

1 个答案: