不能访问数据库端口

Question

文档：

FROM anapsix/alpine-java:8_server-jre_unlimited
# copy application
COPY server.jar /opt/test/
COPY application.yml /opt/test/

# expose server ports
EXPOSE 8080 18080

# Run via dumb-init
WORKDIR /opt/test
ENTRYPOINT ["java"]
CMD ["-jar", "server.jar"]

停靠-编写文件：

services:
  backend-server:
    image: test.com/server:latest
    build: .
    depends_on:
      - database-server
    ports:
        - "127.0.0.1:8080:8080"
        - "127.0.0.1:18080:18080"
  database-server:
    image: postgres:9.6
    ports:
        - "127.0.0.1:5432:5432"
    environment:
      - POSTGRES_PASSWORD testtest

应用程序属性文件：

spring:
  datasource:
    # use default user/database created by PostgreSQL Docker image upon startup
    url: jdbc:postgresql://localhost/postgres
    username: postgres
    password: testtest
    driver-class-name: org.postgresql.Driver

当我运行对接-组合时，它将创建一个数据库容器和一个连接到数据库容器的应用程序容器。

但是spring应用程序容器在引导过程中遇到了一些错误问题：

org.postgresql.util.PSQLException:连接到本地主机:5432被拒绝。检查主机名和端口是否正确，以及port主机是否接受TCP/IP连接。

docker container ls显示数据库正在运行，如果我直接运行spring应用程序，我可以访问它。

a295bfd16e2c        postgres:9.6        "docker-entrypoint.s…"   About a minute ago   Up About a minute   127.0.0.1:5432->5432/tcp   server_database-server_1

那我搞砸的问题是什么？

解决方案我找到了

services:
  backend-server:
    image: test.com/server:latest
    build: .
    environment:
      - SPRING_DATASOURCE_URL=jdbc:postgresql://database-server/postgres
    depends_on:
      - database-server
    ports:
        - 8080:8080
        - 18080:18080
  database-server:
    image: postgres:9.6
    ports:
        - 5432:5432
    environment:
      - POSTGRES_PASSWORD testtest

但是，我仍然无法从我的计算机的localhost:8080访问应用程序，甚至容器的日志也显示

2018-10-31 15:02:40.881 INFO 1--主o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat从端口启动: 8080 (http)和上下文路径'‘ 2018-10-31 15:02:40.881 INFO 1--主com.test.server.Application :在12.823秒内启动应用程序(JVM运行13.235)

Answer 1

我建议按如下所示修改docker-come.yml文件并测试它

services:


backend-server:
    image: test.com/server:latest
    build: .
    depends_on:
      - database-server
    ports:
        - 8080:8080
        - 18080:18080
  database-server:
    image: postgres:9.6
    ports:
        - 5432:5432
    environment:
      - POSTGRES_PASSWORD testtest

Answer 2

services:
  backend-server:
    image: test.com/server:latest
    build: .
    depends_on:
      - database-server
    ports:
        - "127.0.0.1:8080:8080" #change to 8080:8080 without ""and by default set to local so you dont need add local ip
        - "127.0.0.1:18080:18080"  #change to 18080:18080 without ""and by default set to local so you dont need add local ip
  database-server:
    image: postgres:9.6
    ports:
        - "127.0.0.1:5432:5432" #change to 5432:5432 without ""and by default set to local so you dont need add local ip
    environment:
      - POSTGRES_PASSWORD testtest