[英]Spring Boot container cannot connect to My SQL container
I have read all questions related the issue and controlled all points.我已阅读与该问题相关的所有问题并控制了所有要点。 It seems everything is ok with my codes but it doesn't connect anyway.我的代码似乎一切正常,但无论如何都无法连接。 I got CONNECTION REFUSED error when I try to connect from container.尝试从容器连接时出现 CONNECTION REFUSED 错误。 (BTW. Everything is fine when I change URL and try to connect from localhost) (顺便说一句。当我更改 URL 并尝试从 localhost 连接时,一切都很好)
My java project我的java项目
spring:
datasource:
url: jdbc:mysql://mysqldb:3306/bootdb
username: root
password: root
jpa:
properties:
hibernate:
dialect: org.hibernate.dialect.MySQL5InnoDBDialect
hibernate:
ddl-auto: update
database-platform: org.hibernate.dialect.MySQL5Dialect
generate-ddl: true
My docker-compose file我的 docker-compose 文件
version: "3"
services:
mysqldb:
image: mysql
ports:
- "3306:3306"
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: bootdb
networks:
- testnetwork
employee-jdbc:
image: bago1/student:latest
restart: always
build: .
ports:
- 8080:8080
networks:
- testnetwork
depends_on:
- mysqldb
links:
- mysqldb
networks:
testnetwork:
It successfully connects from my local host machine when I edit URL as当我将 URL 编辑为
url: jdbc:mysql://mysqldb:3306/bootdb
Add the hostname
field in your docker compose like this:在 docker compose 中添加hostname
段,如下所示:
version: "3"
services:
mysqldb:
image: mysql
hostname: mysqldb
ports:
- "3306:3306"
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: bootdb
employee-jdbc:
image: bago1/student:latest
restart: always
build: .
ports:
- 8080:8080
depends_on:
- mysqldb
links:
- mysqldb
(Ps: don't need the add the networks
field, the use of docker-compose creates automatically a network for your services) (ps:不需要添加networks
字段,使用 docker-compose 会自动为您的服务创建网络)
(PS2: it's a good practice to use tag when using images (instead of using mysql:latest) ) (PS2:使用图像时使用标签是一个好习惯(而不是使用 mysql:latest))
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