python kafka 发送/接收 消息

首先有安装好的 kafka 环境，点我查看安装教程

环境安装

pip install kafka-python -i https://pypi.tuna.tsinghua.edu.cn/simple/

生产者

import json
import traceback
from kafka import KafkaProducer
from kafka.errors import kafka_errors


def producer_demo():
    producer = KafkaProducer(
        bootstrap_servers=['localhost:9092'], 
        key_serializer=lambda k: json.dumps(k).encode(),
        value_serializer=lambda v: json.dumps(v).encode())
    
    future = producer.send(
        'mykafka',
        key='creater',  # 同一个key值，会被送至同一个分区
        value="{'creater':'zhangsan', 'date':'2023-04-04'}",
        partition=0)  # 向分区1发送消息
    future.get(timeout=100)

if __name__ == "__main__":
    producer_demo()

消费者

import json
import time
import traceback
from kafka import KafkaConsumer
from kafka.errors import kafka_errors

def consumer_demo():
    consumer = KafkaConsumer(
        'mykafka',
        bootstrap_servers="127.0.0.1:9092",
        auto_offset_reset='earliest'
    )

    for message in consumer:
        print(message)
        print(json.loads(message.value))
        # print(a)

if __name__ == "__main__":
    while True:
        consumer_demo()
        time.sleep(1)