Question

我有一个Spring + Hibernate / Flex应用程序需要在数据库模式之间动态切换。为了实现这一点，我在this文章之后实现了一个AbstractRoutingDataSource。不幸的是，在dataSource之间进行更改是行不通的。有人可以帮帮我吗？

我点了这个链接：Spring + Hibernate SessionFactory + AbstractRoutingDataSource

我的代码是： - ApplicationContext：

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

<bean id="dataSource2"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName">
        <value>${jdbc.driverClassName}</value>
    </property>
    <property name="url">
        <value>${jdbc.url2}</value>
    </property>
    <property name="username">
        <value>${jdbc.username2}</value>
    </property>
    <property name="password">
        <value>${jdbc.password2}</value>
    </property>
</bean>

<bean id="routingDS" class="br.com.cpb.gtf.infra.RoutingDataSource">
   <property name="targetDataSources">
      <map key-type="java.lang.String">
         <entry key="br.com.cpb.gtf.infra.SchemaConstants.TESTE" value-ref="dataSource2"/>
         <entry key="br.com.cpb.gtf.infra.SchemaConstants.PRODUCAO" value-ref="dataSource"/>             
      </map>
   </property>
   <property name="defaultTargetDataSource" ref="dataSource2"/>
</bean>



<bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource" /> 
    <property name="packagesToScan" value="br.com.cpb.*" />

    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">
                org.hibernate.dialect.SQLServerDialect
            </prop>
            <prop key="hibernate.show_sql">true</prop>
            <prop key="hibernate.hbm2ddl.auto">update</prop>

            <prop key="hibernate.query.substitutions">true '1', false '0'" </prop>
        </props>
    </property>
</bean>

<bean id="transactionManager"
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>

-RoutingDataSource：

package br.com.cpb.gtf.infra;

import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;

public class RoutingDataSource extends AbstractRoutingDataSource {

    @Override
    protected Object determineCurrentLookupKey()
    {
        return Globals.getSchema();
    }

}

-SchemaConstants

package br.com.cpb.gtf.infra;

public class SchemaConstants {

    public static final String PRODUCAO = "dataSource";
    public static final String TESTE = "dataSource2";

}

-Globals：

package br.com.cpb.gtf.infra;

public class Globals {
    private static final ThreadLocal<String> schemaHolder = new ThreadLocal<String>();

    public static void setSchema(String schema) {
        schemaHolder.set(schema);
    }

    public static String getSchema() {
        return schemaHolder.get();
    }

    public static void clearCustomerType() {
        schemaHolder.remove();
    }
}

- 服务：

@RemotingInclude
@Transactional(propagation=Propagation.REQUIRED, rollbackFor=Exception.class)
public Adm_Usuario logar(Adm_Usuario user)  {

    Globals.clearCustomerType();
    Globals.setSchema(SchemaConstants.TESTE);


    Adm_UsuarioDao dao = new Adm_UsuarioDao(sessionFactory);
    Adm_Usuario admUsuario  = dao.logar(user);      

    setLoggedUserOnSession(admUsuario); 
    return admUsuario;

}

Answer 1

<bean id="sessionFactory"
 class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />

在属性dataSource中，ref应该是routingDS：

<property name="dataSource" ref="routingDS" />

使用Spring和Hibernate的会话工厂处理多个数据库连接

1 个答案: