Java 连接到docker容器中运行的Kafka时出错

我已经为绑定在部署到

Wildfly

的

EAR

目录下的基于spring boot的库配置了以下Kafka属性。通过从类路径（

WEB-INF/classes

）加载porperty文件，我能够成功启动spring组件

我通过docker compose运行Kafka和zookeeper，容器分别映射到主机端口

12181

和

19092

。发布失败，出现错误

19:37:42,914 ERROR [org.springframework.kafka.support.LoggingProducerListener] (swiftalker-3) Exception thrown when sending a message with key='543507' and payload='com.foo.app.kanban.defect.entity.KanbanDefect@84b13' to topic alm_swift-alm:: org.apache.kafka.common.errors.TimeoutException: Topic alm_swift-alm not present in metadata after 2000 ms.

19:37:43,124 WARN  [org.apache.kafka.clients.NetworkClient] (kafka-producer-network-thread | iris-producer-local-1) [Producer clientId=iris-producer-local-1] Error connecting to node 6be446692a1f:9092 (id: 1001 rack: null): java.net.UnknownHostException: 6be446692a1f
    at java.net.InetAddress.getAllByName0(InetAddress.java:1281)
    at java.net.InetAddress.getAllByName(InetAddress.java:1193)
    at java.net.InetAddress.getAllByName(InetAddress.java:1127)
    at org.apache.kafka.clients.ClientUtils.resolve(ClientUtils.java:110)
    at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.currentAddress(ClusterConnectionStates.java:403)
    at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.access$200(ClusterConnectionStates.java:363)
    at org.apache.kafka.clients.ClusterConnectionStates.currentAddress(ClusterConnectionStates.java:151)
    at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:955)
    at org.apache.kafka.clients.NetworkClient.access$600(NetworkClient.java:73)
    at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:1128)
    at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:1016)
    at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:547)
    at org.apache.kafka.clients.producer.internals.Sender.runOnce(Sender.java:324)
    at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:239)
    at java.lang.Thread.run(Thread.java:748)

现在是在提供了

spring.kafka.producer.bootstrap servers=127.0.0.1:19092

属性之后。有趣的是

CONTAINER ID   NAMES                PORTS                                                                          CREATED          STATUS
2133c81ed51d   mongo                0.0.0.0:23556->27017/tcp, 0.0.0.0:23557->27018/tcp, 0.0.0.0:23558->27019/tcp   29 minutes ago   Up 29 minutes
f18b86d8739e   kafka-ui             0.0.0.0:18080->8080/tcp                                                        29 minutes ago   Up 29 minutes
6be446692a1f   kafka                0.0.0.0:19092->9092/tcp                                                        29 minutes ago   Up 29 minutes
873304e1e6a0   zookeeper            2181/tcp, 2888/tcp, 3888/tcp, 8080/tcp                                         29 minutes ago   Up 29 minutes

Wildfly服务器错误日志显示应用程序实际上通过其容器ID连接到docker容器，即

6be446692a1f   kafka                0.0.0.0:19092->9092/tcp

从

docker ps-a

输出和

Error connecting to node 6be446692a1f:9092 (id: 1001 rack: null): java.net.UnknownHostException: 6be446692a1f

我对spring引导代码感到困惑，尽管config属性通过localhost和映射端口引用服务器

19092

，但它是如何在ID和默认端口上找到docker容器，然后尝试连接到它的？我该如何解决这个问题

更新：docker撰写

version: '3'

networks:
  app-tier:
    driver: bridge

services:
  zookeeper:
    image: 'docker.io/bitnami/zookeeper:3-debian-10'
    container_name: 'zookeeper'
    networks:
      - app-tier
    volumes:
      - 'zookeeper_data:/bitnami'
    environment:
      - ALLOW_ANONYMOUS_LOGIN=yes
  kafka:
    image: 'docker.io/bitnami/kafka:2-debian-10'
    container_name: 'kafka'
    ports:
      - 19092:9092
    networks:
      - app-tier
    volumes:
      - 'kafka_data:/bitnami'
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
      - ALLOW_PLAINTEXT_LISTENER=yes
    depends_on:
      - zookeeper
  database:
    image: 'mongo'
    container_name: 'mongo'
    environment:
      - MONGO_INITDB_DATABASE='swiftalk_db'
    networks:
      - app-tier
    ports:
      - 23556-23558:27017-27019
    depends_on:
      - kafka
  kafka-ui:
    container_name: kafka-ui
    image: provectuslabs/kafka-ui:latest
    ports:
      - 18080:8080
    networks:
      - app-tier
    volumes: 
      - 'mongo_data:/data/db'
    depends_on:
      - kafka
    environment:
      - KAFKA_CLUSTERS_0_NAME=local
      - KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS=kafka:9092
      - KAFKA_CLUSTERS_0_ZOOKEEPER=zookeeper:2181

volumes:
  zookeeper_data:
    driver: local
  kafka_data:
    driver: local
  mongo_data:
    driver: local

---

您尚未共享Docker Compose，因此我无法为您提供具体的修复程序，但实际上您需要正确配置播发的侦听器。这是代理向客户机提供的值，它告诉客户机在进行后续连接时在何处找到它

---

详细信息：

添加了

docker compose.yml

；我没有；I don’我不明白我们所说的广告听众是什么意思。我明白我缺少的是卡夫卡（KAFKA_ADVERTISED_listeners=PLAINTEXT://127.0.0.1:19092阅读博客：）

version: '3'

networks:
  app-tier:
    driver: bridge

services:
  zookeeper:
    image: 'docker.io/bitnami/zookeeper:3-debian-10'
    container_name: 'zookeeper'
    networks:
      - app-tier
    volumes:
      - 'zookeeper_data:/bitnami'
    environment:
      - ALLOW_ANONYMOUS_LOGIN=yes
  kafka:
    image: 'docker.io/bitnami/kafka:2-debian-10'
    container_name: 'kafka'
    ports:
      - 19092:9092
    networks:
      - app-tier
    volumes:
      - 'kafka_data:/bitnami'
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
      - ALLOW_PLAINTEXT_LISTENER=yes
    depends_on:
      - zookeeper
  database:
    image: 'mongo'
    container_name: 'mongo'
    environment:
      - MONGO_INITDB_DATABASE='swiftalk_db'
    networks:
      - app-tier
    ports:
      - 23556-23558:27017-27019
    depends_on:
      - kafka
  kafka-ui:
    container_name: kafka-ui
    image: provectuslabs/kafka-ui:latest
    ports:
      - 18080:8080
    networks:
      - app-tier
    volumes: 
      - 'mongo_data:/data/db'
    depends_on:
      - kafka
    environment:
      - KAFKA_CLUSTERS_0_NAME=local
      - KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS=kafka:9092
      - KAFKA_CLUSTERS_0_ZOOKEEPER=zookeeper:2181

volumes:
  zookeeper_data:
    driver: local
  kafka_data:
    driver: local
  mongo_data:
    driver: local