自己动手写了一个kafka消费实例，但是执行时总是报错：
2018-06-19 15:40:24.146 INFO AbstractCoordinator - [Consumer clientId=consumer-1, groupId=dfp] Marking the coordinator localhost:9092 (id: 2147483647 rack: null) dead
2018-06-19 15:40:25.153 WARN NetworkClient - [Consumer clientId=consumer-1, groupId=dfp] Connection to node 0 could not be established. Broker may not be available.
2018-06-19 15:40:26.206 WARN NetworkClient - [Consumer clientId=consumer-1, groupId=dfp] Connection to node 0 could not be established. Broker may not be available.
2018-06-19 15:40:27.311 WARN NetworkClient - [Consumer clientId=consumer-1, groupId=dfp] Connection to node 0 could not be established. Broker may not be available.
2018-06-19 15:40:28.514 WARN NetworkClient - [Consumer clientId=consumer-1, groupId=dfp] Connection to node 0 could not be established. Broker may not be available.
在kafka的配置文件server.properties中添加设置如下：
listeners=PLAINTEXT://10.100.1.200:9092
即可解决问题。
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