12 Docker构建SpringBoot

1 新建SpringBoot项目

1.1 项目依赖(pom.xml)

    4.0.0

    com.gp6
    SpringBoot
    1.0-SNAPSHOT

    
    
        org.springframework.boot
        spring-boot-starter-parent
        2.1.0.RELEASE
    

    
        
        
            org.springframework.boot
            spring-boot-starter-web
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

1.2 项目启动类(HelloApplication)

package com.gp6;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * 测试Docker部署SpringBoot
 *
 * @author gp6
 * @date 2020/1/8
 */
@Controller
@SpringBootApplication
@Configuration
public class HelloApplication {

    @RequestMapping("hello")
    @ResponseBody
    public String hello() {
        return "hello world！";
    }

    public static void main(String[] args) {
        // 运行的类必须包含@SpringBootApplication
        SpringApplication.run(HelloApplication.class, args);
    }
}

1.3 启动

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.0.RELEASE)

2020-01-09 09:43:32.120  INFO 6388 --- [           main] com.gp6.HelloApplication                 : Starting HelloApplication on GP6 with PID 6388 (D:\Study\SpringBoot\target\classes started by GP6 in D:\Study\SpringBoot)
2020-01-09 09:43:32.127  INFO 6388 --- [           main] com.gp6.HelloApplication                 : No active profile set, falling back to default profiles: default
2020-01-09 09:43:36.693  INFO 6388 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-01-09 09:43:36.775  INFO 6388 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-01-09 09:43:36.775  INFO 6388 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/9.0.12
2020-01-09 09:43:36.787  INFO 6388 --- [           main] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [D:\SoftWare\Work\Java\jdk1.8.0_161\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Windows\System32\OpenSSH\;D:\SoftWare\Work\Version\Git\cmd;D:\SoftWare\Work\SQL\MySQL5.5\bin;D:\SoftWare\Work\SQL\MySQL\bin;"%M2_HOME%\bin;";%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;D:\SoftWare\Work\Apache\Apache_Maven_3.2.3\bin;;C:\Program Files\NVIDIA Corporation\NVIDIA NvDLISR;C:\Users\wzhx\AppData\Local\Microsoft\WindowsApps;;.]
2020-01-09 09:43:37.086  INFO 6388 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-01-09 09:43:37.087  INFO 6388 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 4664 ms
2020-01-09 09:43:37.167  INFO 6388 --- [           main] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2020-01-09 09:43:37.175  INFO 6388 --- [           main] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2020-01-09 09:43:37.175  INFO 6388 --- [           main] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2020-01-09 09:43:37.176  INFO 6388 --- [           main] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'formContentFilter' to: [/*]
2020-01-09 09:43:37.176  INFO 6388 --- [           main] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2020-01-09 09:43:37.555  INFO 6388 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-01-09 09:43:37.933  INFO 6388 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2020-01-09 09:43:37.941  INFO 6388 --- [           main] com.gp6.HelloApplication                 : Started HelloApplication in 8.239 seconds (JVM running for 10.347)

1.4 测试

测试

1.5 将项目打包

2 Docker部署SpringBoot项目

2.1 编辑 Dockerfile

# 切换到该目录
[root@localhost boot]# pwd
/usr/local/gp6/boot

# 编辑 Dockerfile
[root@localhost boot]# vi Dockerfile 
FROM openjdk:8
MAINTAINER gp6 

# VOLUME 指定了临时文件目录为/tmp。
# 其效果是在主机 /var/lib/docker 目录下创建了一个临时文件，并链接到容器的/tmp
VOLUME /tmp

# 将jar包添加到容器中并更名为docker-boot.jar
ADD SpringBoot-1.0-SNAPSHOT.jar docker-boot.jar

# 运行jar包
RUN bash -c 'touch /docker-boot.jar'
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/docker-boot.jar"]

2.2 将SpringBoot-1.0-SNAPSHOT.jar包传入/usr/local/gp6/boot

2.3 制作镜像

[root@localhost boot]# docker build -t docker-boot .
Sending build context to Docker daemon  16.62MB
Step 1/6 : FROM openjdk:8
 ---> f8146facf376
Step 2/6 : MAINTAINER gp6 
 ---> Using cache
 ---> e484406249b5
Step 3/6 : VOLUME /tmp
 ---> Using cache
 ---> 58957d5a13b8
Step 4/6 : ADD SpringBoot-1.0-SNAPSHOT.jar docker-boot.jar
 ---> Using cache
 ---> 15cc5f40453a
Step 5/6 : RUN bash -c 'touch /docker-boot.jar'
 ---> Using cache
 ---> cddb3c20c4c3
Step 6/6 : ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/docker-boot.jar"]
 ---> Using cache
 ---> 74332039ad49
Successfully built 74332039ad49
Successfully tagged docker-boot:latest

2.4 启动容器

[root@localhost ~]# docker run  -di --name dockerBoot -p 8080:8080 docker-boot
3bdd2dcd86000ed1f335cdbbca3883f502f59204135d7b6b7b2d797b233f10ae

2.5 宿主机测试

# 宿主机测试
[root@localhost ~]# curl 127.0.0.1:8080/hello
hello world！

2.6 浏览器测试

http://宿主机IP:8080/hello

测试