Question

我用数据源路由创建了一个 spring-boot 应用程序。我已经使用 javax.persistence.EntityManager 使用存储过程从数据库中检索数据。重新启动sql server之后，EntityManager无法使用存储过程从数据库检索数据。我同时使用了属性 TestOnBorrow 和 ValidationQuery 。

RoutingDataSourceCode

<meta-data android:name="com.google.firebase.messaging.default_notification_icon"  android:resource="@drawable/ic_notification" />

}

使用存储过程从数据库获取数据。

public class MessagingChildDataSourceConfig{
private static final Logger LOG = LoggerFactory.getLogger(MessagingChildDataSourceConfig.class);


@Autowired
protected MessagingDataSourceUtil util;

@Autowired
protected JPAProperties jpaProperties;

@Bean(name = "messageDatasource")
@PostConstruct
public DataSource messageDatasource() throws SQLException {

    Map<Object, Object> datasourceMap = new HashMap<>();

    DataSource msgChildDataSources = DataSourceBuilder.create()
    .url("URL")
    .username("USER")
    .password("PASS")
    .build();

    datasourceMap.put("testDataSOurce", msgChildDataSources);

    MessagingRoutingDataSource datasource = new MessagingRoutingDataSource();
    DataSource msgDefaultDataSource = util.defaultDataSource();
    util.setTypeSpecificProperties(msgDefaultDataSource);
    datasource.setDefaultTargetDataSource(msgDefaultDataSource);
    datasource.setTargetDataSources(datasourceMap);

    datasource.afterPropertiesSet();
    return datasource;
}

@Bean(name = "messageEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean messageEntityManagerFactory(EntityManagerFactoryBuilder builder,
        @Qualifier("messageDatasource") DataSource childDatasource) {
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    LocalContainerEntityManagerFactoryBean factory = builder.dataSource(childDatasource)
            .packages(getPackages()) // for entity package
            .persistenceUnit("messagesdbTest").properties(CommonUtil.getJPAProperties(jpaProperties)).build();
    factory.setJpaVendorAdapter(vendorAdapter);
    return factory;
}

@Bean(name = "messageTransactionManager")
public PlatformTransactionManager messageTransactionManager(
        @Qualifier("messageEntityManagerFactory") EntityManagerFactory childEntityManagerFactory) {
    return new JpaTransactionManager(childEntityManagerFactory);
}

@Bean(name = "channelEntityManager")
public EntityManager entityManager(@Qualifier("messageEntityManagerFactory") LocalContainerEntityManagerFactoryBean factory){
    return factory.getNativeEntityManagerFactory().createEntityManager();
}

public  String[] getPackages(){
    return new String[]{"com.asite.abc.data.entity"};
}

}

属性：

public class ChannelService {


@Qualifier("channelEntityManager")
@Autowired
private EntityManager entityManager;


@Transactional(propagation = Propagation.REQUIRES_NEW, readOnly = true, isolation = Isolation.READ_UNCOMMITTED, transactionManager = MessagingStringPool.CHANNEL_TRANSACTION_MANAGER)
public void getUserAccessibleDCs(Long channelId, Long projectId) {

    StoredProcedureQuery query = this.entityManager.createNamedStoredProcedureQuery("channelUserAccessibleDCs");
    this.entityManager.setFlushMode(FlushModeType.AUTO);
    query.setParameter("channel_id", channelId);
    query.execute(); //**Error from this line**

}

使用EntityManager执行存储过程查询时，出现

ERROR ，重新启动sql server之后。错误日志

spring.datasource.password=Pass
spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.testOnBorrow=true 
spring.datasource.username=Username
spring.datasource.validationQuery=SELECT 1

spring.jpa.hibernate.ddl-auto=none
spring.jpa.hibernate.naming-strategy=org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.SQLServer2008Dialect
spring.jpa.database=default
spring.jpa.properties.hibernate.enable_lazy_load_no_trans=true

SQL Server重新启动后，EntityManager无法在Springboot中与数据源重新连接

0 个答案: