Springboot 应用程序无法使用 docker-compose 连接到 MongoDB 容器

Posted 2023-02-26

【中文标题】Springboot 应用程序无法使用 docker-compose 连接到 MongoDB 容器

【英文标题】：Springboot app cannot connect to MongoDB container with docker-compose

【发布时间】：2021-10-25 14:56:13

【问题描述】：

老实说，我已经与这个问题作斗争了几个星期，但仍然找不到我做错了什么。

我有一个基本的 springboot 服务应该连接 MongoDB 容器。当我在本地运行服务时（没有 Dockerised），它工作正常，但如果我在容器中运行服务和 MongoDB，我会得到 MongoSocketOpenException 并拒绝连接。

这是我的 Dockerfile

FROM openjdk:14-alpine
RUN addgroup -S spring && adduser -S spring -G spring
USER spring:spring
ARG JAR_FILE=target/*.jar
COPY $JAR_FILE app.jar
ENTRYPOINT ["java","-jar","/app.jar"]

docker-compose.yml

version: '3.8'

services:
 idv-service:
 image: idv-service-img
 container_name: idv-service
 build: .
 hostname: idvservice
 #restart: on-failure
 ports:
  - 8091:8091
 depends_on:
  - mongodb
 networks:
  - gateway

mongodb:
 image: mongo:5.0
 hostname: mongodb
 container_name: idv-mongodb
 restart: unless-stopped
 ports:
  - 27011:27011
 volumes:
  - dbdata:/data/db
 networks:
  - gateway
 command: --bind_ip 0.0.0.0

volumes:
  dbdata:

networks:
  gateway:
  driver: bridge

最后是 application.properties 文件

spring.data.mongodb.host=mongodb
spring.data.mongodb.port=27011
spring.data.mongodb.database=ttm-idv-db

来自容器的日志

idv-service    | 
idv-service    | com.mongodb.MongoSocketOpenException: Exception opening socket
idv-service    |        at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70) ~[mongodb-driver-core-4.2.3.jar!/:na]
idv-service    |        at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:143) ~[mongodb-driver-core-4.2.3.jar!/:na]
idv-service    |        at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.lookupServerDescription(DefaultServerMonitor.java:188) ~[mongodb-driver-core-4.2.3.jar!/:na]
idv-service    |        at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:144) ~[mongodb-driver-core-4.2.3.jar!/:na]
idv-service    |        at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]
idv-service    | Caused by: java.net.ConnectException: Connection refused
idv-service    |        at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
idv-service    |        at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:589) ~[na:na]
idv-service    |        at java.base/sun.nio.ch.NiosocketImpl.timedFinishConnect(NioSocketImpl.java:542) ~[na:na]
idv-service    |        at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[na:na]
idv-service    |        at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:333) ~[na:na]
idv-service    |        at java.base/java.net.Socket.connect(Socket.java:648) ~[na:na]
idv-service    |        at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:107) ~[mongodb-driver-core-4.2.3.jar!/:na]
idv-service    |        at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:79) ~[mongodb-driver-core-4.2.3.jar!/:na]
idv-service    |        at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:65) ~[mongodb-driver-core-4.2.3.jar!/:na]
idv-service    |        ... 4 common frames omitted
idv-service    | 
idv-service    | 2021-08-25 12:38:00.425  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
idv-service    | 2021-08-25 12:38:00.440  INFO 1 --- [           main] c.m.t.a.idv.IdvServiceApplication        : Started IdvServiceApplication in 3.433 seconds (JVM running for 4.093)

关于我可能做错了什么的任何线索？

Docker 引擎：20.10.8 编写：1.29.2

【参考方案1】：

您的端口映射不正确。 Mongo容器默认会监听27017，所以当你在Docker主机上发布27011端口时，需要将27011主机端口映射到27017容器端口，即

ports: 
 - 27011:27017

【参考方案2】：

嗯，看来我找到了解决方法

mongodb:
    image: mongo:5.0
    hostname: mongodb
    container_name: idv-mongodb
    restart: unless-stopped
    #network_mode: "bridge"
   # environment:
    #  MONGO_INITDB_ROOT_USERNAME: root
     # MONGO_INITDB_ROOT_PASSWORD: 1234
    ports:
      - 27011:27011
    volumes:
      - dbdata:/data/db
   # command: --bind_ip 0.0.0.0
    command: mongod --port 27011

最后一行“command: mongod --port 27011”显然强制 MongoDB 开始侦听不同的端口。我的想法是它是由 Docker 容器处理的，以将 mongod 服务绑定映射到 docker-compose 文件中的给定端口，但事实证明这不是真的。