kafak producer報bootstrap.servers DNS無法解析錯誤 &hosts文件修改

工程啓動不了： 2017-11-01 09:53:46,704 [RMI TCP Connection(5)-127.0.0.1][IP:|USER:][DEBUG                 org.apache.kafka.clients.consumer.KafkaConsumer] Starting the Kafka consumer - trace-id= 2017-11-01 0

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