ClassCastException异常 400 请求出错

我在使用JedisCluster的实例,调用它的方法getClusterNodes()然后给一个JedisPool赋值的时候,提示我一个ClassCastException,具体的栈信息如下:

java.lang.ClassCastException: redis.clients.jedis.JedisPool cannot be cast to redis.clients.jedis.JedisPool
	at com.redis.monitor.redis.impl.RedisServiceImpl.ping(RedisServiceImpl.java:537)
	at com.redis.monitor.manager.impl.RedisManagerImpl.ping(RedisManagerImpl.java:190)
	at com.redis.monitor.web.interceptor.ServerInteceptor.preHandle(ServerInteceptor.java:93)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:891)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:533)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1351)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1322)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:473)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:514)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:920)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:403)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:184)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:856)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:114)
	at org.eclipse.jetty.server.Server.handle(Server.java:352)
	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:596)
	at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1049)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:590)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:212)
	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:426)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:510)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.access$000(SelectChannelEndPoint.java:34)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:450)
	at java.lang.Thread.run(Thread.java:722)

public String ping(Redis redis) {
	Jedis jedis = null;
	JedisPool jp = null;
	boolean broken = false;
	try {
		Map<String, JedisPool> poolMap = redis.getJedisCluster().getClusterNodes();
		for(JedisPool jp1:poolMap.values()){
			jedis = jp1.getResource();
			jedis.ping();
		}
	} catch (JedisConnectionException jce) {
		broken = true;
	} catch (Exception e) {
		e.printStackTrace();
	} 
	return "";
}

在for循环赋值给JedisPool的时候会出错.

大家帮忙看看是怎么回事