spring retry注解

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com</groupId>
  <artifactId>test</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>test</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

<parent>  
        <groupId>org.springframework.boot</groupId>  
        <artifactId>spring-boot-starter-parent</artifactId>  
        <version>1.5.9.RELEASE</version>  
        <relativePath/> 
  </parent>  
    
    
  <dependencies>
     <dependency>  
            <groupId>org.springframework.boot</groupId>  
            <artifactId>spring-boot-starter-web</artifactId>  
     </dependency>  
       
    <dependency>
    <groupId>org.springframework.retry</groupId>
    <artifactId>spring-retry</artifactId>
</dependency>

<dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
     </dependency>
 </dependencies>
  
   <!-- Package as an executable jar -->  
    <build>  
        <plugins>  
        <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
            <plugin>  
                <groupId>org.springframework.boot</groupId>  
                <artifactId>spring-boot-maven-plugin</artifactId>  
            </plugin>  
        </plugins>  
    </build>  
  
</project>

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.retry.annotation.EnableRetry;

@SpringBootApplication
@EnableRetry
public class Application {


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

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


@RestController
public class TestController {

  @Autowired
  private RemoteService remoteService;

  @RequestMapping("/show")
  public String show() {
    try {
      remoteService.call();
    } catch (Exception e) {
      // TODO Auto-generated catch block
      System.out.println("Exception Occur" + e.getMessage());
    }
    return "Hello World";
    }
}

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 RemoteService {

  private final int MAXATTEMPTS = 2;
  private final long DELAY = 1000L;

  @Retryable(value = {NullPointerException.class, ArithmeticException.class},
      maxAttempts = MAXATTEMPTS, backoff = @Backoff(delay = DELAY, multiplier = 1))
  public void call() throws Exception {
    System.out.println("do something...");
    int a = 5 / 0;
    String.valueOf(null);
    // throw new NullPointerException("RPC调用异常");
  }

  @Recover
  public void recover(Exception e) {
    e.printStackTrace();
  }
}