background: the backend courses covered
- using h2 database (in-memory, relational database) -- only need to import the dependency in pom.xml.
- how to init mysql in docker container -- docker-compose up.
target: using mongodb with spring boot application.
Problem A
The first problem is the same as that of connecting docker-contained mysql, even though mongodb has been successfully initiated (see <docker-compse up>).
image.png
The problem is
- that the one cannot use localhost or 192.0.0.1 to access a container, nor can one use
- nor can one access a container with the container's ip.
- one MUST use the docker machine's IP to access the docker container.
the detailed solution may refer to <connecting mysql with spring boot application>
Problem B
The second one is how to config the application.yml or application.properties under /resources directory. After some trial and error I found the following concise solution application.properties:
server.port=9001
spring.application.name=supply-location-service
spring.data.mongodb.uri=mongodb://192.168.99.100:27017/test
NOTE: a important experience is that:
error occurs if you don't explicitly assign the DATABASE NAME (here istest)
P.S. The docker-compose.yml
mongodb:
image: mongo:3.4.4
ports:
- "27017:27017"
extra resources on writing
application.properties: https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html
e.g. the part that covers MongoDB
image.png
Problem starting docker-quick-start terminal
The problem is similar to https://github.com/docker/toolbox/issues/317
solution: 移除docker-machine，新建docker-machine.
I'd highly suggest removing the machine and starting over from scratch (make sure to use the latest version of Docker Machine).
docker-machine rm -f default&&docker-machine create -d virtualbox default
see https://github.com/docker/machine/issues/2740
Now it is fine:
