Dubbo: java.lang.NoClassDefFoundError: org/apache/curator/framework/recipes/cache/TreeCacheListener

Dubbo报错：

java.lang.NoClassDefFoundError: org/apache/curator/framework/recipes/cache/TreeCacheListener

解决方案
导入依赖

<!-- https://mvnrepository.com/artifact/org.apache.curator/curator-recipes -->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>4.2.0</version>
        </dependency>