spring retry 整理-1

添加必要依赖

<dependency>
    <groupId>org.springframework.retry</groupId>
    <artifactId>spring-retry</artifactId>
    <version>1.1.2.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.8.6</version>
</dependency>

然后在启动类上添加@EnableRetry开启重试功能
然后写一个demoservice

@Service
public class RetryService {
 
   static int i =0;
 
   @Retryable(value= {RetryException.class},maxAttempts = 3,backoff = @Backoff(delay = 5000,multiplier = 1))
   public void retry() {
      synchronized (this) {
         i++;
         System.err.println("第"+i+"次 retry");
      }
      throw new RetryException("测试");
   }
 
   @Recover
   public void buchang(RetryException e) {
      synchronized (this) {
         System.err.println("补偿失败,原因:"+ e.getMessage());
         i = 0;
      }
 
   }
 
 
   class RetryException extends RuntimeException {
      public RetryException() {
         super();
      }
 
      public RetryException(String message) {
         super(message);
      }
 
      public RetryException(String message, Throwable cause) {
         super(message, cause);
      }
 
      public RetryException(Throwable cause) {
         super(cause);
      }
 
      protected RetryException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
         super(message, cause, enableSuppression, writableStackTrace);
      }
   }
}

注解和参数介绍:

@Retryable注解
被注解的方法发生异常时会重试
value:指定发生的异常进行重试
include:和value一样,默认空,当exclude也为空时,所有异常都重试
exclude:指定异常不重试,默认空,当include也为空时,所有异常都重试
maxAttemps:重试次数,默认3
backoff:重试补偿机制,默认没有
@Backoff注解
delay:指定延迟后重试
multiplier:指定延迟的倍数,比如delay=5000l,multiplier=2时,第一次重试为5秒后,第二次为10秒,第三次为20秒
@Recover
当重试到达指定次数时,被注解的方法将被回调,可以在该方法中进行日志处理。需要注意的是发生的异常和入参类型一致时才会回调

然后调用retryService.retry()结果:
spring retry 整理-1