Question

我为SpringBoot应用程序设置了以下内容：

数据库1-TransactionManagerDatabase1

数据库2-TransactionManagerDatabase2

Transactional(value = "TransactionManagerDatabase1", readOnly = true)
 public void getResults() {
   // select a row from table in Database1
   // select a row from table in Database2

 DataSource dataSourceDB2 = SpringContextProvider.getApplicationContext().getBean("TransactionManagerDatabase2", DataSource.class);       
 dataSourceDB2.getPool().getActive(); //This is returning an active connection with Database2

}

在将@Transactional应用于 Database1 时， Database2 如何仍保持活动连接??

Answer 1

据此：Transaction management for multiple database Using Spring & Hibernate

您可以这样指定多个TM：

<bean>
  <bean id="transactionManager1"
    class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory1" />
    <qualifier value="account"/>
</bean>

<bean id="transactionManager2"
    class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory2" />
    <qualifier value="businessData"/>
</bean>

然后，您可以执行此操作以指定所需的TM：

public class TransactionalService {

  @Transactional("account")
  public void setSomethingInAccount() { ... }

  @Transactional("businessData")
  public void doSomethingInBusinessData() { ... }
}

public class TransactionalService {

      @Transactional("businessData")
      public void doSomethingInBusinessData(
      @Transactional
      ("account") -> {...}) 
      {...}
    }

@Transactional与多个事务管理器和多个数据库

1 个答案: