spring retry方法调用失败重试机制示例解析

< dependency >

             < groupId >org.springframework.boot</ groupId >

             < artifactId >spring-boot-starter-aop</ artifactId >

         </ dependency >

         < dependency >

             < groupId >org.springframework.retry</ groupId >

             < artifactId >spring-retry</ artifactId >

</ dependency >

/**

      * @Retryable注解参数说明

      * maxAttempts 重试的次数

      * value 指定异常重试

      * exclude 排除某个异常不重试

      *

      * @Backoff注解参数说明

      * backoff 重试的间隔时间

      */

     @Retryable (maxAttempts= 9 ,exclude = ArrayIndexOutOfBoundsException. class ,value=Exception. class ,backoff= @Backoff (delay = 1000 ))

     public String getResult(String name){

         System.out.println( "尝试调用第" +i+++ "次" );

         name= name.split( "," )[ 1111 ]; //异常测试

         if (i!= 8 ){

             name= name.split( "," )[ 1111 ]; //异常测试

         }

         return name+ ":你好！" ;

     }

@SpringBootApplication

@EnableRetry

public class BootRetryApplication {

     public static void main(String[] args) {

         SpringApplication.run(BootRetryApplication. class , args);

     }

}

public static void main(String[] args) {

         ProxyFactory factory = new ProxyFactory(HelloService. class .getClassLoader());

         factory.setInterfaces(HelloService. class );

         factory.setTarget( new HelloService() {

             @Override

             public String say() {

                 System.err.println( "hello" );

                 if ( 1 == 1 ) throw new SecurityException();

                 return "a" ;

             }

         });

         HelloService service = (HelloService) factory.getProxy();

         JdkRegexpMethodPointcut pointcut = new JdkRegexpMethodPointcut();

         pointcut.setPatterns( ".*say.*" );

         RetryOperationsInterceptor interceptor = new RetryOperationsInterceptor();

         ((Advised) service).addAdvisor( new DefaultPointcutAdvisor(pointcut, interceptor));

         service.say();

     }