升级到Spring Boot 2.5.12，并且我收到此错误 - 可能的依赖问题

Question

这是我升级到Spring Boot 2.5.12的POM文件。我需要更新或添加任何其他依赖项吗？

    
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>io.projectreactor</groupId>
            <artifactId>reactor-core</artifactId>
            <version>3.3.22.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-boot-starter</artifactId>
            <version>${swagger.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>io.strati.tunr.utils</groupId>
            <artifactId>strati-af-tunr-utils-client-spring</artifactId>
            <version>${ccm.client.version}</version>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.googlecode.json-simple</groupId>
            <artifactId>json-simple</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-kubernetes-config</artifactId>
            <version>1.1.2.RELEASE</version>
        </dependency>
       
        <dependency>
            <groupId>com.openpojo</groupId>
            <artifactId>openpojo</artifactId>
            <version>0.8.3</version>
            <scope>test</scope>
        </dependency>
        </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>
</project>

运行时遇到此问题

原因：java.lang.ClassNotFoundException：
reactor.util.context.ContextView在
java.base/jdk.internal.loader.BuiltinClassLoader.loadClass（BuiltinClassLoader.java:581）
在
java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass（ClassLoaders.java:178）
在java.base/java.lang.ClassLoader.loadClass（ClassLoader.java:522）

Answer 1

您需要更新此依赖项：

        <dependency>
            <groupId>io.projectreactor</groupId>
            <artifactId>reactor-core</artifactId>
            <version>3.3.22.RELEASE</version>
        </dependency>

到版本3.4.x，因为Spring Boot 2.5.12使用amerack.netty 1.0.18，它依赖于reacter-core 3.4.x（与NoClassDefFoundError相比，用于reasur.util.context.ContextView使用HttpClient与reacter-netty-core和reacher-netty-http #1388），但你强迫Maven使用较旧的Reactor核心版本。