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本篇文章為大家展示了docker怎么在SpringBoot中使用,內容簡明扼要并且容易理解,絕對能使你眼前一亮,通過這篇文章的詳細介紹希望你能有所收獲。
<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,否則構建不會成功 --> <!-- 詳見:https://github.com/spotify/docker-maven-plugin Invalid repository name ... only [a-z0-9-_.] are allowed--> <imageName>spring-boot-docker-start</imageName> <!--相當于from java,本地有使用本地的鏡像,沒有的話從遠程倉庫拉取--> <baseImage>java</baseImage> <exposes> <!--暴露容器內的8080端口--> <expose>8080</expose> </exposes> <!--進入點,執行的命令--> <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。baseImage是基礎鏡像,本地有使用本地的鏡像,沒有的話從遠程倉庫拉取,暴露容器內的8080端口,執行java -jar 命令,啟動微服務。我們知道使用Docker需要制定Dockerfile文件,里面的元素完全通過maven插件的標簽來體現了。還是有前提的,你得先安裝好Docker。講解到這里,我們開始運行
第一步:執行mvn clean package docker:build創建生成鏡像。
第二步:啟動鏡像docker run -it -P spring-boot-docker-start,看下容器內的日志
? 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!
啟動成功。
第三步:輸入docker ps看看容器內的8080端口被映射到了本機的哪個端口
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。
第四步:瀏覽器中輸入http://localhost:32768/hello,看到結果
上述內容就是docker怎么在SpringBoot中使用,你們學到知識或技能了嗎?如果還想學到更多技能或者豐富自己的知識儲備,歡迎關注億速云行業資訊頻道。
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