Spring Boot实例教程 - 创建可执行jar包


传统的spring项目,可能大部分都要部署到web容器中,如Tomcat。Spring Boot提供了一种超级简单的部署方式,就是直接将应用打成jar包,在生产上只需要执行java -jar就可以运行了。

本篇文章就介绍如何创建可执行jar包,以及如何部署、运行和停止。

第一步,我们需要在pom.xml添加spring-boot-maven-plugin,添加在dependecies部分下面:

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

第二步,保存pom.xml并运行mvn package命令打包:

localhost:spring-boot-tutorial-executable majunwei$ mvn package -Dmaven.test.skip=true
[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for com.majunwei:spring-boot-tutorial-executable:jar:0.0.1-SNAPSHOT
[WARNING] 'parent.relativePath' of POM com.majunwei:spring-boot-tutorial-executable:0.0.1-SNAPSHOT (/Users/majunwei/Documents/work/spring-boot-tutorial/spring-boot-tutorial-executable/pom.xml) points at com.majunwei:spring-boot-tutorial instead of org.springframework.boot:spring-boot-starter-parent, please verify your project structure @ line 6, column 10
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building spring-boot-tutorial-executable 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ spring-boot-tutorial-executable ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /Users/majunwei/Documents/work/spring-boot-tutorial/spring-boot-tutorial-executable/src/main/resources
[INFO] skip non existing resourceDirectory /Users/majunwei/Documents/work/spring-boot-tutorial/spring-boot-tutorial-executable/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ spring-boot-tutorial-executable ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ spring-boot-tutorial-executable ---
[INFO] Not copying test resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ spring-boot-tutorial-executable ---
[INFO] Not compiling test sources
[INFO] 
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ spring-boot-tutorial-executable ---
[INFO] Tests are skipped.
[INFO] 
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ spring-boot-tutorial-executable ---
[INFO] 
[INFO] --- spring-boot-maven-plugin:1.5.6.RELEASE:repackage (default) @ spring-boot-tutorial-executable ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.380 s
[INFO] Finished at: 2017-08-04T12:01:52+08:00
[INFO] Final Memory: 21M/227M
[INFO] ------------------------------------------------------------------------

这样就完成了打包操作,大好的包保存在target目录里。应该在10MB左右。

localhost:target majunwei$ ls -lh
total 28232
drwxr-xr-x  4 majunwei  staff   136B  8  4 11:12 classes
drwxr-xr-x  3 majunwei  staff   102B  8  4 11:14 generated-sources
drwxr-xr-x  3 majunwei  staff   102B  8  4 11:14 maven-archiver
drwxr-xr-x  3 majunwei  staff   102B  8  4 11:14 maven-status
-rw-r--r--  1 majunwei  staff    14M  8  4 11:14 spring-boot-tutorial-executable-0.0.1-SNAPSHOT.jar
-rw-r--r--  1 majunwei  staff   3.2K  8  4 11:14 spring-boot-tutorial-executable-0.0.1-SNAPSHOT.jar.original
drwxr-xr-x  3 majunwei  staff   102B  8  4 11:12 test-classes

这个包里包含了依赖的jar包、classes等信息,如果你想仔细查看这个jar包等内容,你可以使用jar tvf命令,或解压出来看:

$ jar tvf spring-boot-tutorial-executable-0.0.1-SNAPSHOT.jar

target目录里还有个非常小的myproject-0.0.1-SNAPSHOT.jar.original文件。这个是Spring Boot打包之前Maven创建的原始jar文件。

第三步,使用java -jar命令,运行应用:

localhost:target majunwei$ java -jar spring-boot-tutorial-executable-0.0.1-SNAPSHOT.jar

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.6.RELEASE)

2017-08-04 12:05:58.917  INFO 909 --- [           main] o.s.b.tutorial.executable.Application    : Starting Application v0.0.1-SNAPSHOT on localhost with PID 909 (/Users/majunwei/Documents/work/spring-boot-tutorial/spring-boot-tutorial-executable/target/spring-boot-tutorial-executable-0.0.1-SNAPSHOT.jar started by majunwei in /Users/majunwei/Documents/work/spring-boot-tutorial/spring-boot-tutorial-executable/target)
2017-08-04 12:05:58.926  INFO 909 --- [           main] o.s.b.tutorial.executable.Application    : No active profile set, falling back to default profiles: default
2017-08-04 12:05:59.039  INFO 909 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@27f8302d: startup date [Fri Aug 04 12:05:59 CST 2017]; root of context hierarchy
2017-08-04 12:06:01.030  INFO 909 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-08-04 12:06:01.050  INFO 909 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2017-08-04 12:06:01.053  INFO 909 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.16
2017-08-04 12:06:01.224  INFO 909 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2017-08-04 12:06:01.225  INFO 909 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2199 ms
2017-08-04 12:06:01.430  INFO 909 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2017-08-04 12:06:01.437  INFO 909 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-08-04 12:06:01.437  INFO 909 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-08-04 12:06:01.438  INFO 909 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-08-04 12:06:01.439  INFO 909 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2017-08-04 12:06:01.890  INFO 909 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@27f8302d: startup date [Fri Aug 04 12:05:59 CST 2017]; root of context hierarchy
2017-08-04 12:06:02.019  INFO 909 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String org.spring.boot.tutorial.executable.Application.home()
2017-08-04 12:06:02.024  INFO 909 --- [           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)
2017-08-04 12:06:02.024  INFO 909 --- [           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)
2017-08-04 12:06:02.062  INFO 909 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-08-04 12:06:02.062  INFO 909 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-08-04 12:06:02.129  INFO 909 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-08-04 12:06:02.344  INFO 909 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2017-08-04 12:06:02.448  INFO 909 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-08-04 12:06:02.458  INFO 909 --- [           main] o.s.b.tutorial.executable.Application    : Started Application in 4.054 seconds (JVM running for 4.622)

第四步,跟之前一样,想要退出应用,按ctrl-c就可以了。

下载本教程的源代码

马军伟
关于作者 马军伟
写的不错,支持一下

先给自己定个小目标,日更一新。