The method of deploying spring-boot maven applications using Docker

This article introduces the deployment of spring-boot maven applications using Docker and shares them with you. The details are as follows:

The deployment process is divided into the following steps:

Create a simple spring-boot application package run application containerization application add docker support to create docker image run docker container view running container startup / shutdown / restart / delete docker container

1. Create a simple spring-boot application

In IntelliJ IDEA, File- > New- > Project:

Then click Next- > Finish.

two。 Package and run the application

Add dependencies to pom.xml:

Org.springframework.boot spring-boot-starter-web

Add a controller:

Controllerpublic class HelloWorld {@ GetMapping ("/ hello") public void helloworld (HttpServletResponse response) throws IOException {response.getWriter () .write ("Hello Spring-boot");}}

Run the project, visit: http://localhost:8080/hello, if present: Hello Spring-boot step 2 completed.

3. Containerized application

Create a Dockerfile file in the project directory: src/main/docker/Dockerfile (no suffix), as follows:

FROM frolvlad/alpine-oraclejdk8:slimVOLUME / tmpADD demo-0.0.1-SNAPSHOT.jar app.jarRUN sh-c 'touch / app.jar'ENV JAVA_OPTS= "" ENTRYPOINT ["sh", "- c", "java $JAVA_OPTS-Djava.security.egd=file:/dev/./urandom-jar / app.jar"]

Where demo-0.0.1-SNAPSHOT.jar is the file name in the packaged / target/ of the project

4. Add docker support to pom files

Ramer com.spotify docker-maven-plugin 0.4.11 ${docker.image.prefix} / ${project.artifactId} src/main/docker / ${project.build.directory} ${project.build.finalName} .jar

5. Create a docker image

Cmd goes to the current directory:

Cd Z:/Desktop/springboot-demo

Package and create an image:

Mvn package-Dmaven.test.skip=true docker:build

Note: please make sure that maven has been added to path; and that docker is installed, if not, visit: https://www.docker.com/community-edition#/download to download the appropriate version.

6. Run the docker container

# # it's best to add-- name parameter docker run-- name=springboot-docker-demo-p 808080 name=springboot-docker-demo 8080-t ramer/demo

Visit from the browser: http://localhost:8080/hello

7. View running containers

Cmd: docker ps

8. Start / shut down / restart / delete the docker container

Cmd: docker start/stop/restart/rm CONTAINER_ID/NAME

Where:

CONTAINER_ID: container id, which can be viewed by executing docker ps

NAME: is the name of the container, which is the name after docker run-name

The above is the whole content of this article, I hope it will be helpful to your study, and I also hope that you will support it.