Spring中的自定义RetryPolicy不重试

Question

我有以下配置类：

@Configuration
public class MyAppConfig {
@Value("${retry.backoff}")
private String retryBackoff;

@Bean
public RetryTemplate retryTemplate() {
    RetryTemplate retryTemplate = new RetryTemplate();

    FixedBackOffPolicy fixedBackOffPolicy = new FixedBackOffPolicy();
    fixedBackOffPolicy.setBackOffPeriod(Long.parseLong(retryBackoff));
    retryTemplate.setBackOffPolicy(fixedBackOffPolicy);

    retryTemplate.setRetryPolicy(new CustomRetryPolicy());

    return retryTemplate;
  } 
}

下面是我为自定义重试策略创建的组件。此策略的目的是改进它，使其仅在发生某些HttpClientErrorExceptions时重试。

@Component
public class CustomRetryPolicy extends ExceptionClassifierRetryPolicy {

public void CustomRetryPolicy() {
    final SimpleRetryPolicy simpleRetryPolicy = new SimpleRetryPolicy();

    simpleRetryPolicy.setMaxAttempts(5);

    this.setExceptionClassifier(new Classifier<Throwable, RetryPolicy>() {
        @Override
        public RetryPolicy classify(Throwable classifiable) {
            if (classifiable instanceof HttpClientErrorException) {

                return simpleRetryPolicy;
            }               
            return simpleRetryPolicy;
        }
    });
  }
}

此问题没有错误日志，并且不会重试。我怎样才能解决这个问题？