对python操作kafka写入json数据的简单demo分享

安装kafka支持库pip install kafka-python

from kafka import KafkaProducerimport json ''' 生产者demo 向test_lyl2主题中循环写入10条json数据 注意事项：要写入json数据需加上value_serializer参数，如下代码'''producer = KafkaProducer(       value_serializer=lambda v: json.dumps(v).encode('utf-8'),       bootstrap_servers=['192.168.12.101:6667','192.168.12.102:6667','192.168.12.103:6667']       )for i in range(10): data={  "name":"李四",  "age":23,  "gender":"男",  "id":i } producer.send('test_lyl2', data)producer.close()

from kafka import KafkaConsumerimport json ''' 消费者demo 消费test_lyl2主题中的数据 注意事项：如需以json格式读取数据需加上value_deserializer参数'''  consumer = KafkaConsumer('test_lyl2',group_id="lyl-gid1",       bootstrap_servers=['192.168.12.101:6667','192.168.12.102:6667','192.168.12.103:6667'],       auto_offset_reset='earliest',value_deserializer=json.loads       )for message in consumer: print(message.value)