泊坞窗撰写:Spring Boot到mysql数据库的连接被拒绝
我是Docker的新手,我需要在docker工具箱上使用docker-compose启动Angular / SpringBoot" title="SpringBoot">SpringBoot /
MySQL项目。我将docker yml文件复制到了使用相同技术的项目中,并更改了其中的路径以匹配我的项目。但是,当我尝试docker-
compose时,会引发以下错误:
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure[...] 84 common frames omitted
Caused by: java.net.ConnectException: Connection refused (Connection refused)
docker-compose.yml看起来像:
version: '3'services:
database:
image: mysql
container_name: database
environment:
MYSQL_ROOT_PASSWORD: ****
MYSQL_DATABASE: db_example
MYSQL_USER: springuser
MYSQL_PASSWORD: ****
ports:
- 3306:3306
volumes:
- db_exampleData:/var/lib/mysql
springapi:
image: openjdk:10-jre-slim
container_name: springapi
ports:
- 8443:8443
depends_on:
- database
volumes:
- ./backend/target/backend-0.1.0.jar:/application.jar
command: ["java", "-jar", "application.jar"]
angular:
image: nginx:alpine
container_name: angular
ports:
- 4200:80
depends_on:
- springapi
volumes:
- ./nginx.conf:/etc/nginx/nginx.conf
- ./frontend/my-app/dist/my-app:/usr/share/nginx/html
volumes:
db_exampleData:
application.properties:
spring.jpa.hibernate.ddl-auto=nonespring.jpa.open-in-view=false
spring.datasource.url=jdbc:mysql://localhost:3306/db_example
spring.datasource.username=springuser
spring.datasource.password=****
server.port=8443
任何建议都会有所帮助!
回答:
您需要像这样更改连接:
jdbc:mysql://database:3306/db_example
并将其添加到springapi
服务下的docker-compose中:
links: - database
另一方面,您可以使用wait-for-it.sh通过在springapi
service 下添加命令部分来检查DB是否已启动:
command: ["path/to/wait-for-it.sh", "database:3306", "-t", "6000", "--", "YOUR ACTUAL COMMAND"]
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