我有两个实例RabbitMQ由IBM提供：

String uri1 = "amqps://admin:password@host1:31281/virtualhost";
String uri2 = "amqps://admin:password@host2:31281/virtualhost";

要连接RabbitMQ，有两个选项：

备选案文1：

ConnectionFactory factory = new ConnectionFactory();
factory.setUri(uri1);
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();

备选案文2：

ConnectionFactory factory = new ConnectionFactory();
factory.setUsername("admin");
factory.setPassword("password");
factory.setHost("host1");
factory.setPort(31281);
factory.setVirtualHost("virtualhost");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();

由于任何原因，我都不能用这个选项连接到rabbitmq。此选项将获得以下错误：

Exception in thread "main" java.util.concurrent.TimeoutException
    at com.rabbitmq.utility.BlockingCell.get(BlockingCell.java:77)
    at com.rabbitmq.utility.BlockingCell.uninterruptibleGet(BlockingCell.java:120)
    at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:36)
    at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:372)
    at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:297)
    at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection(RecoveryAwareAMQConnectionFactory.java:62)
    at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.init(AutorecoveringConnection.java:99)
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:900)
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:859)
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:817)
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:954)

连接到集群rabbitmq的一种方法是：

List<AddressType> addressesList = ......;//Read from xml and load
Connection connection = factory.newConnection(addressesList);

但是我不知道如何用许多URI连接到一个集群rabbitmq，因为选项2不起作用。拜托，有什么建议吗？