时间戳

首页 > 解决方案 > 初始化 SpringBoot 应用程序时出错。我有一个 SpringBoot 应用程序。2.1.5.RELEASE 使用Kakfa

spring - 初始化 SpringBoot 应用程序时出错。我有一个 SpringBoot 应用程序。2.1.5.RELEASE 使用Kakfa

问题描述

我有一个 SpringBoot 应用程序。2.1.5.RELEASE 使用 Spring for Apache Kafka（基于 Kafka 的消息传递解决方案），使用 IntelliJ IDEA 我创建了这个服务：

public class KafkaProducerService {

    private static final String TOPIC = "bendiciones";

    private final KafkaTemplate<String,String> kafkaTemplate;

    public KafkaProducerService(KafkaTemplate<String, String> kafkaTemplate) {
        this.kafkaTemplate = kafkaTemplate;
    }

    public void sendMessage(String message){
        log.info(String.format("$$ -> Producing message --> %s",message));
        this.kafkaTemplate.send(TOPIC,message);
    }
}

但是当我启动应用程序时。我收到了这个错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.kafka.config.internalKafkaListenerAnnotationProcessor': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.kafka.annotation.KafkaListenerAnnotationBeanPostProcessor]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/core/log/LogAccessor
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1303)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1197)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:228)
    at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:721)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:534)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
    at com.bendiciones.buenas.noches.Application.main(Application.java:38)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.kafka.annotation.KafkaListenerAnnotationBeanPostProcessor]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/core/log/LogAccessor
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:184)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1295)
    ... 15 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/core/log/LogAccessor

这些是我在 po 文件中的依赖项：

       <dependency>
                    <groupId>org.springframework.kafka</groupId>
                    <artifactId>spring-kafka</artifactId>
                    <version>2.3.3.RELEASE</version>
                </dependency>

    <dependency>
                <groupId>com.fasterxml.jackson.datatype</groupId>
                <artifactId>jackson-datatype-jsr310</artifactId>
            </dependency>
<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
    </parent>

标签： springspring-bootspring-mvcapache-kafka

解决方案

这类错误通常来自于混合来自不同版本框架的 jar。它们都应该匹配，否则你会遇到这类问题。

查看您的依赖关系，您正在使用依赖于 Spring Framework 5.1.x 的 Spring Boot 2.1.x。您还想使用 Kafka，其中包括 Spring Kafka 2.3.3，但是此版本使用/预期 Spring 5.2。Spring 5.1 和 5.2 不兼容，因此您遇到了问题。

从 Spring Kafka 依赖项中删除<version>标签。Spring Boot 会自动为您管理对适当兼容版本的依赖关系。

推荐阅读