如何使spring @retryable可配置？ [英] How can I make spring @retryable configurable?

问题描述

我有这段代码

@Retryable(maxAttempts = 3, stateful = true, include = ServiceUnavailableException.class,
        exclude = URISyntaxException.class, backoff = @Backoff(delay = 1000, multiplier = 2) )
public void testThatService(String serviceAccountId)
        throws ServiceUnavailableException, URISyntaxException {

//这里的一些实施
}

//some implementation here }

有吗我可以使用@Value配置maxAttempts，延迟和乘数的方法吗？
或者是否有任何其他方法可以使注释中的这些字段可配置？

Is there a way I can make the maxAttempts , delay and multiplier configurable using @Value? Or is there any other approach to make such fields inside annotations configurable?

推荐答案

目前不可能;要连接属性，必须更改注释以获取字符串值，并且注释bean后处理器必须解析占位符和/或SpEL表达式。

It's not currently possible; to wire in properties, the annotation would have to be changed to take String values and the annotation bean post-processor would have to resolve placeholders and/or SpEL expressions.

请参阅此答案替代方案，但目前无法通过注释完成。

See this answer for an alternative, but it can't currently be done via the annotation.

编辑

<bean id="retryAdvice" class="org.springframework.retry.interceptor.RetryOperationsInterceptor">
    <property name="retryOperations">
        <bean class="org.springframework.retry.support.RetryTemplate">
            <property name="retryPolicy">
                <bean class="org.springframework.retry.policy.SimpleRetryPolicy">
                    <property name="maxAttempts" value="${max.attempts}" />
                </bean>
            </property>
            <property name="backOffPolicy">
                <bean class="org.springframework.retry.backoff.ExponentialBackOffPolicy">
                    <property name="initialInterval" value="${delay}" />
                    <property name="multiplier" value="${multiplier}" />
                </bean>
            </property>
        </bean>
    </property>
</bean>

<aop:config>
    <aop:pointcut id="retries"
        expression="execution(* org..EchoService.test(..))" />
    <aop:advisor pointcut-ref="retries" advice-ref="retryAdvice"
        order="-1" />
</aop:config>

其中 EchoService.test 是你的方法想要重试。

Where EchoService.test is the method you want to apply retries to.

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