Springboot deployment project with docker

Creating springboot project, write a simple hello world controller

The following are results of FIG.

Here is the pom.xml file.

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 2   <modelVersion>4.0.0</modelVersion>
 3   <groupId>com.lmy</groupId>
 4   <artifactId>springboot-docker</artifactId>
 5   <version>0.0.1-SNAPSHOT</version>
 6   
 7     <parent>
 8         <groupId>org.springframework.boot</groupId>
 9         <artifactId>spring-boot-starter-parent</artifactId>
10         <version>1.5.3.RELEASE</version>
11         <relativePath />
12     </parent>
13 
14     <properties>
15         <java.version>1.8</java.version>
16         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
17         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
18     </properties>
19     <dependencies>
20         <dependency>
21             <groupId>org.springframework.boot</groupId>
22             <artifactId>spring-boot-starter-web</artifactId>
23         </dependency>
24         <dependency>
25             <groupId>org.springframework.boot</groupId>
26             <artifactId>spring-boot-starter-test</artifactId>
27             <scope>test</scope>
28         </dependency>
29     </dependencies>
30     <build>
31         <plugins>
32             <plugin>
33                 <groupId>org.springframework.boot</groupId>
34                 <artifactId>spring-boot-maven-plugin</artifactId>
35             </plugin>
36         </plugins>
37     </build>
38 </project>

View Code

Here is the directory structure.

App.java Code

package com.lmy.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App {
    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }
}

HelloController.java Code

package com.lmy.demo.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/hello")
public class HelloController {

    @GetMapping("/hi/{name}")
    public String sayHello(@PathVariable String name){
        return "hi,"+name;
    }
}

The springboot project packaged into jar package.

I joined in pom in a maven build the plugin, right-project, select Run As Select maven build, enter the package in goals

Console appears below the word representing packed success,

This time there has been build out of a jar in the target folder.

This jar package will be copied to the same level directory dockerfile file.

Dockerfile Code

FROM java:8
ENV REFRESHED_AT 2019-07-25
ADD springboot-docker-0.0.1-SNAPSHOT.jar app.jar
RUN sh -c 'touch /app.jar'
ENV JAVA_OPTS=""
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

Run the following command to create a mirror 
sudo docker build -t lmy / springboot_v1. 
Run the following command to create run container, 
sudo Docker RUN -d -p 8085: 8080 LMY / springboot_v1

Below we can see already run successful.

Springboot deployment project with docker

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