引入maven依賴

<dependency>
    <groupId>org.springframework.retry</groupId>
    <artifactId>spring-retry</artifactId>
    <version>1.3.1.RELEASE</version>
</dependency>

添加@Retryable和@Recover注解

package com.test;

import org.springframework.remoting.RemoteAccessException;
import org.springframework.retry.annotation.Backoff;
import org.springframework.retry.annotation.Recover;
import org.springframework.retry.annotation.Retryable;
import org.springframework.stereotype.Service;

@Service
public class TestService {

    @Retryable(value= {Exception.class},
    maxAttempts = 3,
    backoff = @Backoff(delay = 5000l,multiplier = 1))
    public void something() throws Exception {
        System.out.println("do something...");
        throw new Exception("調(diào)用異常");
    }

    @Recover
    public void recover(Exception e) {
        System.out.println(e.getMessage());
    }

}

• @Retryable注解
  被注解的方法發(fā)生異常時(shí)會(huì)重試
  value:指定發(fā)生的異常進(jìn)行重試
  include:和value一樣，默認(rèn)空，當(dāng)exclude也為空時(shí)，所有異常都重試
  exclude:指定異常不重試，默認(rèn)空，當(dāng)include也為空時(shí)，所有異常都重試
  maxAttemps:重試次數(shù)，默認(rèn)3
  backoff:重試補(bǔ)償機(jī)制，默認(rèn)沒有
• @Backoff注解
  delay:指定延遲后重試
  multiplier:指定延遲的倍數(shù)，比如delay=5000l,multiplier=2時(shí)，第一次重試為5秒后，第二次為10秒，第三次為20秒
• @Recover
  當(dāng)重試到達(dá)指定次數(shù)時(shí)，被注解的方法將被回調(diào)，可以在該方法中進(jìn)行日志處理。需要注意的是發(fā)生的異常和入?yún)㈩愋鸵恢聲r(shí)才會(huì)回調(diào)

SpringBoot啟動(dòng)測(cè)試

package com.test;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.retry.annotation.EnableRetry;

@SpringBootApplication
@EnableRetry
public class TestApplication {
    
    @Autowired
    private TestService testService;
    
    @RequestMapping("/test")
    public String test() {
        testService.something();
        return "200";
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(TestApplication.class, args);
    }
    
}