弹簧启动2 上的弹性4j - 断路器未打开

Question

按照入门指南(https://resilience4j.readme.io/docs/getting-started-3(和演示项目(https://github.com/resilience4j/resilience4j-spring-boot2-demo(，我想自己创建一个更简单的测试应用程序来测试它。

这是代码：

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class ServiceConfiguration {
@Bean
public RestTemplate restTemplate(){
return new RestTemplate();
}
}

控制器：

@RestController
public class ServiceController {
@Autowired
private  AlbumService albumService;

@GetMapping("/albums")
ResponseEntity<String> getAlbums() {
return albumService.getAlbums();
}
}

和服务类：

@Slf4j
@Service
public class AlbumService {
@Autowired
private  RestTemplate restTemplate;
@CircuitBreaker(name = "albumService", fallbackMethod = "getDefaultAlbumList")
public ResponseEntity<String> getAlbums() {
String url = MockNeat.secure().probabilites(String.class)
.add(0.7, "https://wrong-url.com")
.add(0.3, "https://jsonplaceholder.typicode.com/albums").val();
return new ResponseEntity<>(restTemplate.getForObject(url, String.class), HttpStatus.OK);
}
private ResponseEntity<String> getDefaultAlbumList(Exception ex) throws URISyntaxException, IOException {
log.info("Recovered: " + ex.getMessage());
return new ResponseEntity<>(new String(Files.readAllBytes(Paths.get(getClass().getClassLoader().getResource("fallback-album-list.json").toURI()))), HttpStatus.OK);
}
}

最后这里是应用程序文件：

resilience4j:
circuitbreaker:
configs:
default:
registerHealthIndicator: true
slidingWindowSize: 10
minimumNumberOfCalls: 5
permittedNumberOfCallsInHalfOpenState: 3
automaticTransitionFromOpenToHalfOpenEnabled: true
waitDurationInOpenState: 5s
failureRateThreshold: 50
eventConsumerBufferSize: 10
instances:
albumService:
baseConfig: default
management:
endpoints:
web:
exposure:
include: '*'
endpoint:
health:
show-details: always
metrics:
distribution:
percentiles-histogram:
http:
server:
request: true
resielence4j:
circuitbreaker:
calls: true

我引入了一个概率为 70% 的随机误差来测试断路器。但是，电路永远不会打开，我总是收到错误。 我不知道我错过了什么！有什么帮助吗？

Answer 1

发现问题！ 我忘了将 spring-aop 作为依赖项包括在内！ 这是我的pom.xml以防有人遇到同样的问题：

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>r4j</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>r4j</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<repositories>
<repository>
<id>jcenter</id>
<url>https://jcenter.bintray.com/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>net.andreinc.mockneat</groupId>
<artifactId>mockneat</artifactId>
<version>0.3.9</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>io.github.resilience4j</groupId>
<artifactId>resilience4j-spring-boot2</artifactId>
<version>1.4.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
<version>2.3.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<version>2.3.0.RELEASE</version>
</dependency>
</dependencies>
</project>