春季未选择主要实体经理工厂

Question

配置了两个数据源。主要EM工厂：

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
    basePackages = {"com.example.data.postgresql"},
    entityManagerFactoryRef = "postgreSqlEntityManagerFactory",
    transactionManagerRef = "postgreSqlEntityTransactionManager"
)
public class PostgreSqlJpaConfig {
...
@Bean
@Primary
public LocalContainerEntityManagerFactoryBean postgreSqlEntityManagerFactory(
        @Qualifier("postgreSqlDataSource") DataSource dataSource,
        EntityManagerFactoryBuilder builder){
    return builder.dataSource(dataSource).packages("com.example.postgresql").build();
}

辅助EM Factory：

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        basePackages = {"com.example.data.greenplum"},
        entityManagerFactoryRef = "greenPlumEntityManagerFactory",
        transactionManagerRef = "greenPlumEntityTransactionManager"
)
public class GreenPlumJpaConfig {

@Bean
public LocalContainerEntityManagerFactoryBean greenPlumEntityManagerFactory(
        @Qualifier("greenPlumDataSource") DataSource dataSource,
        EntityManagerFactoryBuilder builder){
    return builder.dataSource(dataSource).packages("com.example.greenplum").build();
}

服务在com.example.service中。有时他们会使用实体管理器，而春天不能在两个之间进行选择：

***************************
APPLICATION FAILED TO START
***************************

Description:

Field entityManager in ... required a single bean, but 2 were found:

我可以在每个EM注入中手动添加一个预选赛以使其正常工作，

@Autowired
public void setEntityManager(@Qualifier("postgreSqlEntityManagerFactory") EntityManager entityManager) {
    this.entityManager = entityManager;
}

但是应用程序中有120多个EM注射告诉Spring在未明确指定的所有情况下使用默认主要EM。

Answer 1

问题是过时的春季靴子。升级到2.6.2解决了问题。