Java 使用spring在一个应用程序中维护两个数据库

我有一个用例，我必须在远程数据库中保留一些数据，但是我会在本地

entercode here

db中引用数据，插入在远程数据库中正确发生，但是当我试图从远程数据库访问数据时，我无法获取数据，在这里我指定了我的几个代码片段

persistence.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">

<bean id="myDataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="${db.url}" />
    <property name="username" value="${db.username}" />
    <property name="password" value="${db.password}" />

    <!-- Added this additional line to share the connection Pool -->
    <!-- <property name="initialSize" value="1000" /> <property name="maxActive" 
        value="1000" /> <property name="maxIdle" value="10" /> -->
</bean>

<!-- This is the new Properties for the new DB of aadhaar vault -->
<bean id="myDataSource1"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="${db1.url}" />
    <property name="username" value="${db1.username}" />
    <property name="password" value="${db1.password}" />

    <!-- Added this additional line to share the connection Pool -->
    <!-- <property name="initialSize" value="1000" /> <property name="maxActive" 
        value="1000" /> <property name="maxIdle" value="10" /> -->
</bean>

<!-- This is the new DB table, which is being initialized for the aadhaar 
    vault -->

<bean id="mySessionFactory1"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="myDataSource1" />
    <property name="configLocation" value="classpath:hibernateNew.cfg.xml" />
    <property name="namingStrategy" ref="namingStrategy" />
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.show_sql">false</prop>
            <prop key="hibernate.hbm2ddl.auto">create</prop>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
            <!-- Specify session context -->
            <!-- <prop key="hibernate.current_session_context_class">org.hibernate.context.internal.ThreadLocalSessionContext</prop> -->

        </props>
    </property>
</bean>



<!-- This is the new DB table, which is being initialized for the  
    remote , ends here -->


<bean id="mySessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="myDataSource" />
    <property name="configLocation" value="classpath:hibernate.cfg.xml" />
    <property name="namingStrategy" ref="namingStrategy" />
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.show_sql">false</prop>
            <prop key="hibernate.hbm2ddl.auto">update</prop>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
            <!-- Specify session context -->
            <!-- <prop key="hibernate.current_session_context_class">org.hibernate.context.internal.ThreadLocalSessionContext</prop> -->

        </props>
    </property>
</bean>

<tx:annotation-driven />

<bean id="transactionManager"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="mySessionFactory" />
</bean>
<bean id="transactionManagerNew"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="mySessionFactory1" />
</bean>

<bean id="namingStrategy" class="org.hibernate.cfg.ImprovedNamingStrategy" />

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://www.jboss.org/dtd/hibernate/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <mapping class="com.abc.def.model.User"></mapping>

    </session-factory>
</hibernate-configuration>

  <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://www.jboss.org/dtd/hibernate/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <mapping class="com.abc.def.model.User1"></mapping>
    </session-factory>
</hibernate-configuration>

ABCService.Java

 @Service
public class ABCServiceImpl implements ABCService {

    @Autowired
    ABCDao abcDao;
    @Override
    @Transactional("transactionManagerNew")
    public ABC getByForeignKey(Long refid,Long customerEntityId) {

        return abcDao.getByForeignKey(refid,customerEntityId);
    }

@Repository
public class ABCDaoImpl implements ABCDao {

    @Autowired
    @Qualifier("mySessionFactory1")
    protected SessionFactory sessionFactory;
    @SuppressWarnings("unchecked")
    @Override
    public ABC getByForeignKey(Long refId,Long customerEntityId) {
        Query query = sessionFactory.getCurrentSession().createQuery(" from ABC where RefId = " + refId + " and customerEntityId = "+customerEntityId);
        List<ABC> abcs = query.list();
        if(abcs.size()>0) {
            return abcs.get(0);
        }

        return null;
    }
}

ABCDaoImpl.java

 @Service
public class ABCServiceImpl implements ABCService {

    @Autowired
    ABCDao abcDao;
    @Override
    @Transactional("transactionManagerNew")
    public ABC getByForeignKey(Long refid,Long customerEntityId) {

        return abcDao.getByForeignKey(refid,customerEntityId);
    }

@Repository
public class ABCDaoImpl implements ABCDao {

    @Autowired
    @Qualifier("mySessionFactory1")
    protected SessionFactory sessionFactory;
    @SuppressWarnings("unchecked")
    @Override
    public ABC getByForeignKey(Long refId,Long customerEntityId) {
        Query query = sessionFactory.getCurrentSession().createQuery(" from ABC where RefId = " + refId + " and customerEntityId = "+customerEntityId);
        List<ABC> abcs = query.list();
        if(abcs.size()>0) {
            return abcs.get(0);
        }

        return null;
    }
}

@存储库
公共类ABCDaoImpl实现ABCDao{
@自动连线
@限定词（“mySessionFactory1”）
受保护的SessionFactory SessionFactory；
@抑制警告（“未选中”）
@凌驾
公共ABC getByForeignKey（长refId、长customerEntityId）{
Query Query=sessionFactory.getCurrentSession（）.createQuery（“来自ABC，其中RefId=“+RefId+”和customerEntityId=“+customerEntityId”）；
List abcs=query.List（）；
如果（abcs.size（）>0）{
返回abcs.get（0）；
}
返回null；
}
}

这里我尝试从新的_db访问值，它总是返回空值，

---

任何帮助都将不胜感激。我正在处理这从过去2天还没有找到任何解决方案，请让我知道，如果一些更多的片段是必要的

select在哪里？@YCF\L我正在使用hibernate，所以它本身管理您正在使用的rdbms？您是否在rdbms中测试了查询？@YCF_L我正在使用MySql，但是我的查询在我的db环境中正常运行。您确定

refId

和

customerEntityId

不为空吗？