Caused by: java.lang.NoClassDefFoundError: rx/Single

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'observableMVCConfiguration' defined in class path resource 

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'singleReturnValueHandler' defined in class path resource 

Caused by: java.lang.NoClassDefFoundError: rx/Single

以zookeeper为注册中心搭建spring cloud环境 ，出现这个错，一般是zk依赖与boot 版本兼容问题。最后，把pom的依赖改动一下，启动就不再报错了。错误如下

这是原来的pom 配置

最后，把pom配置改为一下，启动就没什么问题了。

代码如下：

1.<dependencies>
    <!-- spring-cloud -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-config</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
    </dependency>
</dependencies>

2.<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Camden.SR2</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>