Spring 升级问题 - ClassNotFoundException

Question

我已将 spring 启动从 2.2.6.RELEASE 升级到 2.7.0。升级后，我在启动应用程序时收到 ClassNotFoundException。我试过 2.6.6 但结果是一样的。

我的 pom 文件看起来像

<dependency>
            <groupId>io.projectreactor.netty</groupId>
            <artifactId>reactor-netty</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webflux</artifactId>
        </dependency>
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
     <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-elasticsearch</artifactId>
        </dependency>

异常：

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'reactiveElasticsearchClient' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ReactiveElasticsearchRestClientAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.data.elasticsearch.client.reactive.DefaultReactiveElasticsearchClient] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@3b192d32]
                   
org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.0.jar:2.7.0]
                  
    Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.springframework.data.elasticsearch.client.reactive.DefaultReactiveElasticsearchClient] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@3b192d32]
                 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.3.20.jar:5.3.20]
                    ... 15 common frames omitted
    Caused by: java.lang.NoClassDefFoundError: org/elasticsearch/xcontent/XContentParser
                .....
                    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:467) ~[spring-core-5.3.20.jar:5.3.20]
                    ... 22 common frames omitted
    Caused by: java.lang.ClassNotFoundException: org.elasticsearch.xcontent.XContentParser
                    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) ~[na:na]
                    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[na:na]
                    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
                    ... 26 common frames omitted

有人可以帮忙吗？

Answer 1

我终于解决了这个问题。在父 pom 中明确给出了弹性搜索版本。一旦我删除给定的版本错误就消失了，应用程序工作正常。

Spring 升级问题 - ClassNotFoundException

Spring upgrade issue - ClassNotFoundException

java

spring

spring-boot

spring-data-elasticsearch