@Retryable的使用

<dependency>
            <groupId>org.springframework.retry</groupId>
            <artifactId>spring-retry</artifactId>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
        </dependency>

package com.jun.web.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.retry.annotation.EnableRetry;

@Configuration
@EnableRetry
public class RetryConfig {
}

package com.jun.web.annotation;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.retry.annotation.Backoff;
import org.springframework.retry.annotation.Recover;
import org.springframework.retry.annotation.Retryable;
import org.springframework.stereotype.Service;

import java.time.LocalTime;

@Service
public class PayService {
    private Logger logger = LoggerFactory.getLogger(getClass());

    private final int totalNum = 100000;

    @Retryable(value = Exception.class, maxAttempts = 3, backoff = @Backoff(delay = 2000L, multiplier = 1.5))
    public int minGoodsnum(int num) throws Exception {
        logger.info("减库存开始" + LocalTime.now());
        try {
            int i = 1 / 0;
        } catch (Exception e) {
            logger.error("illegal");
        }
        if (num <= 0) {
            throw new IllegalArgumentException("数量不对");
        }
        logger.info("减库存执行结束" + LocalTime.now());
        return totalNum - num;
    }

    @Recover
    public int recover(Exception e) {
        logger.warn("减库存失败！！！" + LocalTime.now());
        //记日志到数据库
        return totalNum;
    }
}

package com.jun.web.annotation;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class PayController {
    @Autowired
    private PayService payService;

    @GetMapping("/retry")
    public String getNum() throws Exception {
        int i = payService.minGoodsnum(-1);
        System.out.println("===="+i);
        return "succeess";
    }
}

2019-08-23 10:27:46.702 DEBUG 16036 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet        : GET "/retry", parameters={}
2019-08-23 10:27:46.702 DEBUG 16036 --- [nio-8080-exec-5] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to public java.lang.String com.jun.web.annotation.PayController.getNum() throws java.lang.Exception
2019-08-23 10:27:46.703  INFO 16036 --- [nio-8080-exec-5] com.jun.web.annotation.PayService        : 减库存开始10:27:46.703
2019-08-23 10:27:46.703 ERROR 16036 --- [nio-8080-exec-5] com.jun.web.annotation.PayService        : illegal
2019-08-23 10:27:48.703  INFO 16036 --- [nio-8080-exec-5] com.jun.web.annotation.PayService        : 减库存开始10:27:48.703
2019-08-23 10:27:48.703 ERROR 16036 --- [nio-8080-exec-5] com.jun.web.annotation.PayService        : illegal
2019-08-23 10:27:51.704  INFO 16036 --- [nio-8080-exec-5] com.jun.web.annotation.PayService        : 减库存开始10:27:51.704
2019-08-23 10:27:51.704 ERROR 16036 --- [nio-8080-exec-5] com.jun.web.annotation.PayService        : illegal
2019-08-23 10:27:51.704  WARN 16036 --- [nio-8080-exec-5] com.jun.web.annotation.PayService        : 减库存失败！！！10:27:51.704
====100000
2019-08-23 10:27:51.704 DEBUG 16036 --- [nio-8080-exec-5] m.m.a.RequestResponseBodyMethodProcessor : Using ‘text/html‘, given [text/html, application/xhtml+xml, image/webp, image/apng, application/signed-exchange;v=b3, application/xml;q=0.9, */*;q=0.8] and supported [text/plain, */*, text/plain, */*, application/json, application/*+json, application/json, application/*+json]
2019-08-23 10:27:51.704 DEBUG 16036 --- [nio-8080-exec-5] m.m.a.RequestResponseBodyMethodProcessor : Writing ["succeess"]
2019-08-23 10:27:51.705 DEBUG 16036 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet        : Completed 200 OK
2019-08-23 10:27:51.714 DEBUG 16036 --- [nio-8080-exec-6] o.s.web.servlet.DispatcherServlet        : GET "/favicon.ico", parameters={}
2019-08-23 10:27:51.715 DEBUG 16036 --- [nio-8080-exec-6] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler [class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/], class path resource []]
2019-08-23 10:27:51.718 DEBUG 16036 --- [nio-8080-exec-6] o.s.web.servlet.DispatcherServlet        : Completed 200 OK