我刚开始接触熔断器技术。我尝试使用eureka服务器实现这项技术,但卡在了回退方法的地方。
我的pom.xml文件
<?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>2.2.10.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.microservice</groupId>
<artifactId>inventory-client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>inventory-client</name>
<description>Demo microservice project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
</properties>
<dependencies>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>io.github.resilience4j</groupId>
<artifactId>resilience4j-spring-boot2</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>io.github.resilience4j</groupId>
<artifactId>resilience4j-circuitbreaker</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
我的application.properties文件
spring.application.name=inventory-client-app
server.port=8081
spring.cloud.circuitbreaker.resilience4j.enabled=false
resilience4j.circuitbreaker.instances.itemTypesBreaker.registerHealthIndicator=true
resilience4j.circuitbreaker.instances.itemTypesBreaker.slidingWindowSize=10
resilience4j.circuitbreaker.instances.itemTypesBreaker.permittedNumberOfCallsInHalfOpenState=3
resilience4j.circuitbreaker.instances.itemTypesBreaker.slidingWindowType=TIME_BASED
resilience4j.circuitbreaker.instances.itemTypesBreaker.minimumNumberOfCalls=20
resilience4j.circuitbreaker.instances.itemTypesBreaker.waitDurationInOpenState=50s
resilience4j.circuitbreaker.instances.itemTypesBreaker.failureRateThreshold=50
resilience4j.circuitbreaker.instances.itemTypesBreaker.eventConsumerBufferSize=10
我的控制器
import io.github.resilience4j.circuitbreaker.annotation.CircuitBreaker;
@RestController
@RequestMapping("/inventory-client")
public class ItemTypeController {
@Autowired
RestTemplate restTemplate;
@GetMapping("/item-types")
@ResponseStatus(HttpStatus.OK)
@CircuitBreaker(name="itemTypesBreaker",fallbackMethod = "itemTypesFallBack")
public List<ItemType> getAllItemTypes(){
List<ItemType> itemTypeList = (List<ItemType>) restTemplate.getForObject("http://inventory-catalog-app/inventory-catalog/item-types/", ItemType.class);
return itemTypeList;
}
private String itemTypesFallBack(Throwable t){
return "Item Catalog is down";
}
我不能使用备用方法调用此端点,请问我缺少哪些其他配置?谢谢。