Spring Boot创建可执行jar包的实例教程

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。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。