Spring boot2 抱怨 CircuitBreakerConfigurationOnMissingBean

Question

我在 Spring Boot 版本 2.0.6 上运行了 Spring Boot 应用程序。我添加了resilience4j 以具有断路器功能，但应用程序抱怨CircuitBreakerConfigurationOnMissingBean。

Caused by: java.lang.IllegalStateException: Failed to introspect Class [io.github.resilience4j.circuitbreaker.autoconfigure.CircuitBreakerConfigurationOnMissingBean] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@1b9e1916

尝试添加所有必需的依赖项。 POM sn-p

       <dependency>
            <groupId>io.github.resilience4j</groupId>
            <artifactId>resilience4j-spring-boot2</artifactId>
            <version>0.17.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-web</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-aop</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-actuator</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>io.github.resilience4j</groupId>
            <artifactId>resilience4j-rxjava2</artifactId>
            <version>0.17.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

Answer 1

你需要使用spring boot 2.1.0版本，因为CircuitBreakerConfigurationOnMissingBean有一个依赖，只有2.1.0或以上版本才有。