Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/util/ClassUtils

异常：

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/util/ClassUtils

缺少org.springframework.core包

<!-- https://mvnrepository.com/artifact/org.springframework/org.springframework.core -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>org.springframework.core</artifactId>
                <version>2.5.6.SEC01</version>
            </dependency>