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  • 提升10倍生产力:IDEA远程一键部署SpringBoot到Docker

    作者:陶章好

    juejin.im/post/5d026212f265da1b8608828b

    IDEA是Java开发利器,springboot是Java生态中最流行的微服务框架,docker是时下最火的容器技术,那么它们结合在一起会产生什么化学反应呢?

    一、开发前准备

    1.Docker安装

    可以参考:

    https://docs.docker.com/install/

    2.配置docker远程连接端口

      vi /usr/lib/systemd/system/docker.service
    

    找到 ExecStart,在最后面添加 -H tcp://0.0.0.0:2375,如下图所示

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    3.重启docker

     systemctl daemon-reload
     systemctl start docker
    

    4.开放端口

    firewall-cmd --zone=public --add-port=2375/tcp --permanent  
    

    5.Idea安装插件,重启

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    6.连接远程docker

    1、编辑配置

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    2、填远程docker地址

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    3、连接成功,会列出远程docker容器和镜像

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    二、新建项目

    1.创建springboot项目

    项目结构图

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    1、配置pom文件

    <?xml version="1.0" encoding="UTF-8"?>
    <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">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>docker-demo</groupId>
        <artifactId>com.demo</artifactId>
        <version>1.0-SNAPSHOT</version>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.2.RELEASE</version>
            <relativePath />
        </parent>
    
        <properties>
             <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
             <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
             <docker.image.prefix>com.demo</docker.image.prefix>
             <java.version>1.8</java.version>
        </properties>
        <build>
            <plugins>
              <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
              </plugin>
            <plugin>
               <groupId>com.spotify</groupId>
               <artifactId>docker-maven-plugin</artifactId>
               <version>1.0.0</version>
               <configuration>
                  <dockerDirectory>src/main/docker</dockerDirectory>
                  <resources>
                    <resource>
                        <targetPath>/</targetPath>
                        <directory>${project.build.directory}</directory>
                        <include>${project.build.finalName}.jar</include>
                    </resource>
                  </resources>
               </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-antrun-plugin</artifactId>
                <executions>
                     <execution>
                         <phase>package</phase>
                        <configuration>
                            <tasks>
                                <copy todir="src/main/docker" file="target/${project.artifactId}-${project.version}.${project.packaging}"></copy>
                            </tasks>
                         </configuration>
                        <goals>
                            <goal>run</goal>
                        </goals>
                        </execution>
                </executions>
            </plugin>
    
           </plugins>
        </build>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
      <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
    </dependencies>
    </project>
    

    2、在src/main目录下创建docker目录,并创建Dockerfile文件

    FROM openjdk:8-jdk-alpine
    ADD *.jar app.jar
    ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
    

    3、在resource目录下创建application.properties文件

    logging.config=classpath:logback.xml
    logging.path=/home/developer/app/logs/
    server.port=8990
    

    4、创建DockerApplication文件

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

    5、创建DockerController文件

    @RestController
    public class DockerController {
        static Log log = LogFactory.getLog(DockerController.class);
    
        @RequestMapping("/")
        public String index() {
            log.info("Hello Docker!");
            return "Hello Docker!";
        }
    }
    

    6、增加配置

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    命令解释:

    • Image tag : 指定镜像名称和tag,镜像名称为 docker-demo,tag为1.1

    • Bind ports : 绑定宿主机端口到容器内部端口。格式为[宿主机端口]:[容器内部端口]

    • Bind mounts : 将宿主机目录挂到到容器内部目录中。格式为[宿主机目录]:[容器内部目录]。这个springboot项目会将日志打印在容器 /home/developer/app/logs/ 目录下,将宿主机目录挂载到容器内部目录后,那么日志就会持久化容器外部的宿主机目录中。

    7、Maven打包

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    8、运行

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    先pull基础镜像,然后再打包镜像,并将镜像部署到远程docker运行

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    这里我们可以看到镜像名称为docker-demo:1.1,docker容器为docker-server

    9、运行成功

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    10、浏览器访问

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    11、日志查看

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    自此,通过IDEA 部署springboot项目到docker成功!难以想象,部署一个Javaweb项目竟然如此简单方便!

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  • 原文地址:https://www.cnblogs.com/Java-Road/p/11824620.html
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