我已经在STS中创建了一个EurekaServer，但是当我试图以SpringBootApplication的形式运行它时，它就给了UnsupportedClassVersionError

Question

这是pom.xml

4.0.0 2022.0.0-RC2 spring-启动器-父程序3.0.0 com.vipul EurekaServer 0.0.1-快照EurekaServer Eureka服务器17 com.vipul org.springframework.cloud spring-starter com.vipul EurekaServer-eureka服务器

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

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>
<repositories>
    <repository>
        <id>netflix-candidates</id>
        <name>Netflix Candidates</name>
        <url>https://artifactory-oss.prod.netflix.net/artifactory/maven-oss-candidates</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
    <repository>
        <id>spring-milestones</id>
        <name>Spring Milestones</name>
        <url>https://repo.spring.io/milestone</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
</repositories>

运行EurekaServerApplication时会收到此错误

线程"main“java.lang.UnsupportedClassVersionError: org/springframework/boot/SpringApplication中的异常已由Java的最新版本(类文件版本61.0)编译。这个版本的java.base只识别高达60.0的类文件版本(在java.base/java.lang.ClassLoader.defineClass1(Native方法中))在java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1010)，在java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)，在java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:855)，在java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:753)，在java.base/jdk.inside.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:676) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:634) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519) at com.vipul.EurekaServerApplication.main(EurekaServerApplication.java:12)

Answer 1

看起来您正在使用Spring 3，它需要运行JDK17 (https://spring.io/blog/2022/11/24/spring-boot-3-0-goes-ga)。请将项目和启动配置为使用Java 17。