import org.springframework.retry.RetryPolicy; //导入依赖的package包/类
@Bean
@Qualifier("tempo")
public RetryOperations tempoApiRetryPolicy() {
    final RetryPolicy retryPolicy = createRetryPolicy();

    final ExponentialBackOffPolicy backOffPolicy = new ExponentialBackOffPolicy();
    backOffPolicy.setInitialInterval(2000);
    backOffPolicy.setMultiplier(3);

    final RetryTemplate retryTemplate = new RetryTemplate();
    retryTemplate.setRetryPolicy(retryPolicy);
    retryTemplate.setBackOffPolicy(backOffPolicy);
    retryTemplate.setThrowLastExceptionOnExhausted(true);

    return retryTemplate;
}
 

import org.springframework.retry.RetryPolicy; //导入依赖的package包/类
private static RetryPolicy createRetryPolicy() {
    final SimpleRetryPolicy simpleRetryPolicy = new SimpleRetryPolicy();
    simpleRetryPolicy.setMaxAttempts(5);

    final Map<Class<? extends Throwable>, RetryPolicy> policyMap = new HashMap<>();
    policyMap.put(TempoApiException.class, new NeverRetryPolicy());
    policyMap.put(FeignException.class, new NeverRetryPolicy());
    policyMap.put(IOException.class, simpleRetryPolicy);
    policyMap.put(RetryableException.class, simpleRetryPolicy);

    final ExceptionClassifierRetryPolicy retryPolicy = new ExceptionClassifierRetryPolicy();
    retryPolicy.setPolicyMap(policyMap);

    return simpleRetryPolicy;
}
 

import org.springframework.retry.RetryPolicy; //导入依赖的package包/类
@Override
public void afterPropertiesSet() throws Exception {

	ExceptionClassifierRetryPolicy policy = new ExceptionClassifierRetryPolicy();
	policy.setExceptionClassifier(new Classifier<Throwable, RetryPolicy>() {
		@Override
		public RetryPolicy classify(Throwable classifiable) {
			return classifiable instanceof ServiceException ? retryPolicy
					: neverRetryPolicy;
		}
	});

	this.retryPolicy.setTimeout(this.timeout);
	this.template.setRetryPolicy(policy);
}
 

import org.springframework.retry.RetryPolicy; //导入依赖的package包/类
@Bean
public RetryPolicy retryPolicy()
{
	TimeoutRetryPolicy timeoutRetryPolicy = new TimeoutRetryPolicy();
	timeoutRetryPolicy.setTimeout(MAX_CONNECTION_TIMEOUT.toMillis());
	ExceptionClassifierRetryPolicy exceptionClassifierRetryPolicy = new ExceptionClassifierRetryPolicy();
	exceptionClassifierRetryPolicy.setPolicyMap(ImmutableMap.of(MolgenisDataException.class, timeoutRetryPolicy));
	return exceptionClassifierRetryPolicy;
}
 

import org.springframework.retry.RetryPolicy; //导入依赖的package包/类
/**
 * リトライの対象となる例外とリトライ回数を指定し、
 * {@link RetryPolicy}のインスタンスを生成します。
 * @return {@link SimpleRetryPolicy}のインスタンス
 */
protected RetryPolicy retryPolicy() {
    return new SimpleRetryPolicy(retryCount, exceptionMapping(), true);
}
 

import org.springframework.retry.RetryPolicy; //导入依赖的package包/类
/**
 * リトライの対象となる例外とリトライ回数を指定し、
 * {@link RetryPolicy}のインスタンスを生成します。
 * @return {@link SimpleRetryPolicy}のインスタンス
 */
protected RetryPolicy simpleRetryPolicy() {
    return new SimpleRetryPolicy(retryCount, Collections.<Class<? extends Throwable>, Boolean> singletonMap(Exception.class, true));
}