在Spring事务管理中使用自定义超时

Question

我有几个方法与spring @Transactional在我的项目如下:

@Transactional(value = "sys.tx.mngr", propagation = Propagation.REQUIRES_NEW)
public void addMember(InputParam input) 
{
       // do somthing...
}
@Transactional(value = "sys.tx.mngr", propagation = Propagation.REQUIRES_NEW)
public void blockMember(InputBlockParam param) 
{
      // do somthing...
}

然后我为每个方法设置不同的超时，如下所示:

@Transactional(value = "sys.tx.mngr", propagation = Propagation.REQUIRES_NEW,timeout = 40)
public void addMember(InputParam input) 
{
       // do somthing...
}
@Transactional(value = "sys.tx.mngr", propagation = Propagation.REQUIRES_NEW, timeout = 20)
public void blockMember(InputBlockParam param) 
{
     // do somthing...
}

我想在最后一步设置超时为可配置的属性文件，但我不知道什么。是否有任何解决方案设置超时在spring Transactional注释可配置或动态?

编辑:

我在spring上下文文件中定义sys.tx.mngr如下:

<bean id="sys.tx.mngr" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="emf"/>
</bean>
<tx:annotation-driven transaction-manager="sys.tx.mngr" />

或者在每个方法的spring上下文文件中定义超时的替代方法?

Answer 1

可以通过以下方式完成:-

a) Using Reflection.
b) Using Instrumentation.
c) Using TransactionTemplate (Programatically transaction).

For (a) &(b)你可以像这样设置你的类:-

public class Test implements InitializingBean {
@Autowired
private Environment env;
public void afterPropertiesSet() throws Exception {
System.out.println("Sample prop 1 value : "+env.resolvePlaceholders("${prop1.value}"));
//Code to set/modify Transactional annotation "timeout" 
// attribute values for all methods
}
}

如何设置/修改值的链接可以在这里找到

动态修改字段注释值
在运行时修改类定义's注释字符串参数

对于(c)，您可以配置如下:-

public class MemberDaoImpl {
@Autowired
private Environment env;
@Autowired
private TransactionTemplate transactionTemplate;
        public void addMember(InputParam input) {  
  transactionTemplate.setTimeout(Integer.parseInt(env.resolvePlaceholders("${addmember.timeout}")));
               // do somthing...
        }
}
<bean id="memberDao" class="com.xxx.impl.MemberDaoImpl">
    <property name="transactionTemplate">
        <bean class="org.springframework.transaction.support.TransactionTemplate">
            <property name="transactionManager" ref="sys.tx.mngr" />
        </bean>
    </property>
</bean>
<bean id="sys.tx.mngr" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="emf"/>
</bean>