最近一段時(shí)間霍弹，容器化成為了一種趨勢(shì)。一臺(tái)服務(wù)器可以虛擬成多個(gè)容器娃弓，同時(shí)提供服務(wù)典格，共享硬件資源，節(jié)約成本台丛，容器化的翹楚就是Docker耍缴，我司的所有微服務(wù)的發(fā)布都已經(jīng)容器化。spring boot 也緊跟潮流挽霉，加入了Docker的maven插件防嗡，可以通過執(zhí)行命令來制作鏡像。
本節(jié)的主要內(nèi)容不是講代碼侠坎，而是講這個(gè)Docker插件蚁趁。廢話不多說，上pom
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>0.4.12</version>
<configuration>
<!-- 注意imageName一定要是符合正則[a-z0-9-_.]的实胸，否則構(gòu)建不會(huì)成功 -->
<!-- 詳見：https://github.com/spotify/docker-maven-plugin Invalid repository name ... only [a-z0-9-_.] are allowed-->
<imageName>spring-boot-docker-start</imageName>
<!--相當(dāng)于from java,本地有使用本地的鏡像他嫡，沒有的話從遠(yuǎn)程倉庫拉取-->
<baseImage>java</baseImage>
<exposes>
<!--暴露容器內(nèi)的8080端口-->
<expose>8080</expose>
</exposes>
<!--進(jìn)入點(diǎn)，執(zhí)行的命令-->
<entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
<resources>
<resource>
<targetPath>/</targetPath>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
imageName就是鏡像的名稱庐完。baseImage是基礎(chǔ)鏡像涮瞻，本地有使用本地的鏡像，沒有的話從遠(yuǎn)程倉庫拉取假褪，暴露容器內(nèi)的8080端口署咽，執(zhí)行java -jar 命令，啟動(dòng)微服務(wù)生音。我們知道使用Docker需要制定Dockerfile文件宁否，里面的元素完全通過maven插件的標(biāo)簽來體現(xiàn)了。還是有前提的缀遍，你得先安裝好Docker慕匠。講解到這里，我們開始運(yùn)行
第一步：執(zhí)行mvn clean package docker:build創(chuàng)建生成鏡像域醇。
第二步：?jiǎn)?dòng)鏡像docker run -it -P spring-boot-docker-start,看下容器內(nèi)的日志
? spring-boot-docker-start git:(master) docker run -it -P spring-boot-docker-start
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.3.5.RELEASE)
2018-03-25 08:41:56.274 INFO 1 --- [ main] com.shuqi.ApplicationMain : Starting ApplicationMain on 075543f8f5b6 with PID 1 (/spring-boot-docker-start.jar started by root in /)
2018-03-25 08:41:56.287 INFO 1 --- [ main] com.shuqi.ApplicationMain : No active profile set, falling back to default profiles: default
2018-03-25 08:41:56.406 INFO 1 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@126d28d3: startup date [Sun Mar 25 08:41:56 UTC 2018]; root of context hierarchy
2018-03-25 08:41:58.356 INFO 1 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2018-03-25 08:41:58.382 INFO 1 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2018-03-25 08:41:58.384 INFO 1 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.33
2018-03-25 08:41:58.512 INFO 1 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-03-25 08:41:58.512 INFO 1 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2113 ms
2018-03-25 08:41:58.920 INFO 1 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2018-03-25 08:41:58.928 INFO 1 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-03-25 08:41:58.937 INFO 1 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-03-25 08:41:58.937 INFO 1 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-03-25 08:41:58.938 INFO 1 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2018-03-25 08:41:59.406 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@126d28d3: startup date [Sun Mar 25 08:41:56 UTC 2018]; root of context hierarchy
2018-03-25 08:41:59.516 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hello],methods=[GET]}" onto public java.lang.String com.shuqi.controller.HelloController.hello()
2018-03-25 08:41:59.523 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-03-25 08:41:59.524 INFO 1 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-03-25 08:41:59.584 INFO 1 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-25 08:41:59.585 INFO 1 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-25 08:41:59.645 INFO 1 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-25 08:41:59.754 INFO 1 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-03-25 08:41:59.834 INFO 1 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2018-03-25 08:41:59.838 INFO 1 --- [ main] com.shuqi.ApplicationMain : Started ApplicationMain in 4.084 seconds (JVM running for 5.012)
[2018-03-25 08:41:59] server started!
啟動(dòng)成功台谊。
第三步：輸入docker ps看看容器內(nèi)的8080端口被映射到了本機(jī)的哪個(gè)端口
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
075543f8f5b6 spring-boot-docker-start "java -jar /spring..." About a minute ago Up About a minute 0.0.0.0:32768->8080/tcp trusting_noether
確定是32768端口蓉媳。
第四步：瀏覽器中輸入http://localhost:32768/hello,看到結(jié)果
image.png
說明我們?cè)L問容器內(nèi)的程序成功了！
下節(jié)將的內(nèi)容是：SpringBoot基礎(chǔ)教程(十七)——與日志的結(jié)合
