@DataJpaTest 数据库无数据

@DataJpaTest 数据库无数据

先看官方注释：

/**
 * Annotation that can be used in combination with {@code @RunWith(SpringRunner.class)}
 * for a typical JPA test. Can be used when a test focuses only on JPA
 * components.
 * 

 * Using this annotation will disable full auto-configuration and instead apply only
 * configuration relevant to JPA tests.
 * 

 * By default, tests annotated with {@code @DataJpaTest} are transactional and roll back
 * at the end of each test. They also use an embedded in-memory database (replacing any
 * explicit or usually auto-configured DataSource). The
 * {@link AutoConfigureTestDatabase @AutoConfigureTestDatabase} annotation can be used to
 * override these settings.
 * 

 * If you are looking to load your full application configuration, but use an embedded
 * database, you should consider {@link SpringBootTest @SpringBootTest} combined with
 * {@link AutoConfigureTestDatabase @AutoConfigureTestDatabase} rather than this
 * annotation.

 */

原因：默认使用内存数据库，且case具有事务性，会自动回滚插入数据。如果想使用自己配置的数据库，不要使用这个注解。

解决：@DataJpaTest替换为下列注解。

@SpringBootTest
@AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)