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spring - Docker RabbitMQ Spring java.net.UnknownHostException: rabbitmq: Name or service not known

问题描述

我试图在 Docker 上部署 Spring Server。Spring 服务器正在连接到在另一个应用程序中运行的 RabbitMQ 服务器。连接到 rabbitmq 时出现错误。我在 application.properties 中添加了主机，但没有用。比作为环境变量添加到应用程序容器中并且仍然不起作用。我还重建了 jar 并更改了图像版本。

version: '3'

services:
  rabbitmq:
    image: rabbitmq:management
    ports:
      - "5672:5672" #JMS Port
      - "15672:15672" #Management Port - default user:pass = guest:guest

  db:
    image: mysql:5.7.22
    environment:
      MYSQL_ROOT_PASSWORD: "root"
      MYSQL_DATABASE: "hospital"
      MYSQL_PASSWORD: "root"
    ports:
      - "3306:3306"
    networks:
      - mysql_bridge
    restart: always

  springboot-docker-compose-app-container:
    image: app-image
    build:
      context: ./
      dockerfile: Dockerfile
    environment: # Pass environment variables to the service
      SPRING_DATASOURCE_URL: jdbc:mysql://db:3306/hospital?useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false&allowPublicKeyRetrieval=true
      SPRING_DATASOURCE_USERNAME: root
      SPRING_DATASOURCE_PASSWORD: root
      SPRING_RABBITMQ_HOST: rabbitmq
    depends_on:
      - rabbitmq
      - db
    volumes:
      - /data/VerzorgerSOAP
    ports:
      - "8080:8080"
    networks:
      - mysql_bridge
      - rabbiy_mq

networks:
  mysql_bridge:
  rabbiy_mq:

这也是我的 application.properties

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.generate-ddl=true
spring.datasource.url = jdbc:mysql://db:3306/hospital?useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false&allowPublicKeyRetrieval=true
spring.jpa.hibernate.ddl-auto = update
spring.datasource.username = root
spring.datasource.password = root
spring.jackson.serialization.WRITE_DATES_AS_TIMESTAMPS = false

server.ssl.enabled=false

spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.properties.hibernate.globally_quoted_identifiers=true

spring.jpa.properties.hibernate.enable_lazy_load_no_trans=true
spring.rabbitmq.host= rabbitmq

这是我得到的错误

org.springframework.amqp.AmqpIOException: java.net.UnknownHostException: rabbitmq

标签： springspring-bootdockerrabbitmq

解决方案

dockercompose 文件中 rabbitmq 的网络配置丢失：

rabbitmq:
    image: rabbitmq:management
    ports:
      - "5672:5672" #JMS Port
      - "15672:15672" #Management Port - default user:pass = guest:guest
    networks:
      - rabbiy_mq

@david-maze 建议的另一个解决方案是删除所有networks

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