Spring Boot 2执行器空指针异常[InMemoryAuditEventRepository bean为空]

我有一个springboot项目，它具有以下依赖项

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-config</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>
    <dependency>
        <groupId>net.rakugakibox.spring.boot</groupId>
        <artifactId>logback-access-spring-boot-starter</artifactId>
        <version>2.7.1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-logging</artifactId>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.8.0</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.8.0</version>
    </dependency>
    <dependency>
        <groupId>org.audit4j</groupId>
        <artifactId>audit4j-core</artifactId>
        <version>2.4.1</version>
        <exclusions>
            <exclusion>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>io.micrometer</groupId>
        <artifactId>micrometer-registry-prometheus</artifactId>
        <version>${micrometer.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.audit4j</groupId>
        <artifactId>audit4j-db</artifactId>
        <version>2.4.1</version>
    </dependency>
    <dependency>
        <groupId>org.audit4j</groupId>
        <artifactId>audit4j-spring</artifactId>
        <version>2.4.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.5</version>
    </dependency>
    <dependency>
        <groupId>ical4j</groupId>
        <artifactId>ical4j</artifactId>
        <version>0.9.20</version>
        <exclusions>
            <exclusion>
                <groupId>org.scala-lang</groupId>
                <artifactId>scala-library</artifactId>
            </exclusion>
            <exclusion>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.jasypt</groupId>
        <artifactId>jasypt-spring31</artifactId>
        <version>1.9.2</version>
        <exclusions>
            <exclusion>
                <groupId>org.scala-lang</groupId>
                <artifactId>scala-library</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-aop</artifactId>
    </dependency>
    <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-transport-native-epoll</artifactId>
        <version>4.1.24.Final</version>
        <classifier>linux-x86_64</classifier>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-web</artifactId>
        <version>5.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
        <version>5.0.6.RELEASE</version>
    </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


    <dependency>
        <groupId>org.jmockit</groupId>
        <artifactId>jmockit</artifactId>
        <version>${jmockit.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-api</artifactId>
        <version>${junit-jupiter-api.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-engine</artifactId>
        <version>${junit-jupiter-engine.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.vintage</groupId>
        <artifactId>junit-vintage-engine</artifactId>
        <version>${junit-vintage-engine.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.platform</groupId>
        <artifactId>junit-platform-launcher</artifactId>
        <version>${junit-platform-launcher.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.platform</groupId>
        <artifactId>junit-platform-runner</artifactId>
        <version>${junit-platform-runner.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.platform</groupId>
        <artifactId>junit-platform-surefire-provider</artifactId>
        <version>${junit-platform-surefire-provider.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-params</artifactId>
        <version>${junit-jupiter-params.version}</version>
        <scope>test</scope>
    </dependency>

    </dependencies>

进一步查看spring代码，这里会出现错误

public class AuditListener extends AbstractAuditListener {

    private static final Log logger = LogFactory.getLog(AuditListener.class);

    private final AuditEventRepository auditEventRepository;

    public AuditListener(AuditEventRepository auditEventRepository) {
        this.auditEventRepository = auditEventRepository;
    }

    @Override
    protected void onAuditEvent(AuditEvent event) {
        if (logger.isDebugEnabled()) {
            logger.debug(event);
        }
        this.auditEventRepository.add(event);
    }

}

似乎有人认为，

auditEventRepository

是空的。我认为应该在MemoryAuditeVentrepository中用

初始化它

什么可能导致此问题？我应该在哪里调查？
缺少的部分没有配置
AbstractAuditListener

@Component
public class AuditApplicationEventListener extends AbstractAuditListener {

private static final Logger log = LoggerFactory.getLogger(AuditApplicationEventListener.class);

@Override
protected void onAuditEvent(AuditEvent event) {
    log.info("On audit event: timestamp: {}, principal: {}, type: {}, data: {}",
            event.getTimestamp(),
            event.getPrincipal(),
            event.getType(),
            event.getData()
    );
}

}

本教程非常有用。以上代码取自本教程

@Component
public class AuditApplicationEventListener extends AbstractAuditListener {

private static final Logger log = LoggerFactory.getLogger(AuditApplicationEventListener.class);

@Override
protected void onAuditEvent(AuditEvent event) {
    log.info("On audit event: timestamp: {}, principal: {}, type: {}, data: {}",
            event.getTimestamp(),
            event.getPrincipal(),
            event.getType(),
            event.getData()
    );
}