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Maven自动化部署

Maven 部署自动化

2023-06-13 09:11:54 时间

以上这些工作通常由多个不同的团队协作完成，例如，项目研发人员负责项目代码的提交，项目管理员负责项目的构建工作，运维人员负责将构建好的应用文件部署到生产环境上等等。任何一个环节出现问题，都由可能导致 bug 甚至生产事故的发生，例如，新版本构建完成后，没有发布到指定的网络位置中，导致运维人员再次将旧版本构件部署到生产环境中。

自动化部署的实现方式

为了避免以上问题的发生，我们通常采用如下的架构来管理项目：

Maven 提供了一个名为 maven-release-plugin 的插件，它可以帮助我们实现 Maven 项目的自动化部署。

maven-release-plugin 提供了很多命令，其中最常用的是以下 4 个：

修改 POM 中的配置，将应用程序的版本从快照版本（SNAPSHOT）修改为正式版本（RLEASE），例如从从 1.0-SNAPSHOT 到 1.0。针对修改后的 POM 进行测试，确保一切正常。提交修改后的 POM。将正式版本的代码提交到 Git，并进行标记。修改 POM 中的配置，将正式版本升级为更高的快照版本（例如从 1.0 升级到 1.1-SNAPSHOT），以便以后继续使用快照版本进行开发。将修改后的 POM 提交到 Git。
从 Git 中检出上面标记的正式版代码，并执行命令 mvn deploy ，将正式版本的构件部署到 Nexus 中。
maven-release-plugin 插件的使用

使用 maven-release-plugin 插件实现项目的自动化部署需要以下步骤。

1. 执行以下 mvn 命令，创建一个名为 mavenAutoDeployDemo 的 Maven 项目，请参考 Maven创建项目。


mvn archetype:generate -DgroupId=net.biancheng.www -DartifactId=mavenAutoDeployDemo -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

2. 将 mavenAutoDeployDemo 上传到 Github 上，由 Git 管理该项目的代码，操作步骤请参考 Git 文档。

3. 修改该项目的 POM 文件，增加 Git 以及 Nexus 的相关配置，如下。


 ?xml version= 1.0 encoding= UTF-8 ? 

 project xmlns= http://maven.apache.org/POM/4.0.0 xmlns:xsi= http://www.w3.org/2001/XMLSchema-instance 

 xsi:schemaLocation= http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd 

 modelVersion 4.0.0 /modelVersion 

 groupId net.biancheng.www /groupId 

 artifactId mavenAutoDeployDemo /artifactId 

 version 1.0-SNAPSHOT /version 

 name mavenAutoDeployDemo /name 

 url http://www.example.com /url 

 !--配置 git 地址-- 

 scm 

 url /url 

 connection scm:git:https://github.com/javmohan/mavenAutoDeployDemo.git /connection 

 developerConnection scm:git:https://github.com/javmohan/mavenAutoDeployDemo.git /developerConnection 

 /scm 

 properties 

 project.build.sourceEncoding UTF-8 /project.build.sourceEncoding 

 maven.compiler.source 1.7 /maven.compiler.source 

 maven.compiler.target 1.7 /maven.compiler.target 

 /properties 

 dependencies 

 dependency 

 groupId junit /groupId 

 artifactId junit /artifactId 

 version 4.11 /version 

 scope test /scope 

 /dependency 

 /dependencies 

 build 

 pluginManagement !-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -- 

 plugins 

 !-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -- 

 plugin 

 artifactId maven-clean-plugin /artifactId 

 version 3.1.0 /version 

 /plugin 

 !-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -- 

 plugin 

 artifactId maven-resources-plugin /artifactId 

 version 3.0.2 /version 

 /plugin 

 plugin 

 artifactId maven-compiler-plugin /artifactId 

 version 3.8.0 /version 

 /plugin 

 plugin 

 artifactId maven-surefire-plugin /artifactId 

 version 2.22.1 /version 

 /plugin 

 plugin 

 artifactId maven-jar-plugin /artifactId 

 version 3.0.2 /version 

 /plugin 

 plugin 

 artifactId maven-install-plugin /artifactId 

 version 2.5.2 /version 

 /plugin 

 plugin 

 artifactId maven-deploy-plugin /artifactId 

 version 2.8.2 /version 

 /plugin 

 !-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -- 

 plugin 

 artifactId maven-site-plugin /artifactId 

 version 3.7.1 /version 

 /plugin 

 plugin 

 artifactId maven-project-info-reports-plugin /artifactId 

 version 3.0.0 /version 

 /plugin 

 /plugins 

 /pluginManagement 

 plugins 

 !--配置 maven-release-plugin 插件-- 

 plugin 

 groupId org.apache.maven.plugins /groupId 

 artifactId maven-release-plugin /artifactId 

 version 2.5.3 /version 

 configuration 

 useReleaseProfile false /useReleaseProfile 

 goals deploy /goals 

 checkModificationExcludes 

 checkModificationExclude .idea /checkModificationExclude 

 /checkModificationExcludes 

 autoVersionSubmodules true /autoVersionSubmodules 

 /configuration 

 /plugin 

 /plugins 

 /build 

 !--配置发布到 Nexus 的地址-- 

 distributionManagement 

 repository 

 id bianchengbang_Release_hosted /id 

 url http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/ /url 

 /repository 

 snapshotRepository 

 id Snapshot /id 

 url http://localhost:8082/nexus/content/repositories/bianchengbang_Snapshot_hosted/ /url 

 /snapshotRepository 

 /distributionManagement 

 /project

4. 配置好之后，执行以下 mvn 命令，提交代码。


mvn scm:checkin -Dmessage= 代码提交日志 #代码提交

命令执行结果如下图。

图1：提交代码

5. 执行以下 mvn 命令。


mvn release:prepare

执行结果如下。


[INFO] Scanning for projects...

[INFO]

[INFO] --------------- net.biancheng.www:mavenAutoDeployDemo ----------------

[INFO] Building mavenAutoDeployDemo 1.0-SNAPSHOT

[INFO] --------------------------------[ jar ]---------------------------------

[INFO]

[INFO] --- maven-release-plugin:2.5.3:prepare (default-cli) @ mavenAutoDeployDemo ---

[INFO] Verifying that there are no local modifications...

[INFO] ignoring changes on: **/pom.xml.next, **/release.properties, **/pom.xml.branch, **/pom.xml.tag, .idea, **/pom.xml.backup, **/pom.xml.releaseBackup

[INFO] Executing: cmd.exe /X /C git rev-parse --show-toplevel 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git status --porcelain . 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[WARNING] Ignoring unrecognized line: ?? release.properties

[INFO] Checking dependencies and plugins for snapshots ...

What is the release version for mavenAutoDeployDemo ? (net.biancheng.www:mavenAutoDeployDemo) 1.0: :

What is SCM release tag or label for mavenAutoDeployDemo ? (net.biancheng.www:mavenAutoDeployDemo) mavenAutoDeployDemo-1.0: :

What is the new development version for mavenAutoDeployDemo ? (net.biancheng.www:mavenAutoDeployDemo) 1.1-SNAPSHOT: :

[INFO] Transforming mavenAutoDeployDemo ...

[INFO] Not generating release POMs

[INFO] Executing goals clean verify ...

[WARNING] Maven will be executed in interactive mode, but no input stream has been configured for this MavenInvoker instance.

[INFO] [INFO] Scanning for projects...

[INFO] [INFO]

[INFO] [INFO] --------------- net.biancheng.www:mavenAutoDeployDemo ----------------

[INFO] [INFO] Building mavenAutoDeployDemo 1.0

[INFO] [INFO] --------------------------------[ jar ]---------------------------------

[INFO] [INFO]

[INFO] [INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ mavenAutoDeployDemo ---

[INFO] [INFO]

[INFO] [INFO] --- maven-resources-plugin:3.0.2:resources (default-resources) @ mavenAutoDeployDemo ---

[INFO] [INFO] Using UTF-8 encoding to copy filtered resources.

[INFO] [INFO] skip non existing resourceDirectory D:/eclipse workSpace 3/mavenAutoDeployDemo/src/main/resources

[INFO] [INFO]

[INFO] [INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ mavenAutoDeployDemo ---

[INFO] [INFO] Changes detected - recompiling the module!

[INFO] [INFO] Compiling 1 source file to D:/eclipse workSpace 3/mavenAutoDeployDemo/target/classes

[INFO] [INFO]

[INFO] [INFO] --- maven-resources-plugin:3.0.2:testResources (default-testResources) @ mavenAutoDeployDemo ---

[INFO] [INFO] Using UTF-8 encoding to copy filtered resources.

[INFO] [INFO] skip non existing resourceDirectory D:/eclipse workSpace 3/mavenAutoDeployDemo/src/test/resources

[INFO] [INFO]

[INFO] [INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ mavenAutoDeployDemo ---

[INFO] [INFO] Changes detected - recompiling the module!

[INFO] [INFO] Compiling 1 source file to D:/eclipse workSpace 3/mavenAutoDeployDemo/target/test-classes

[INFO] [INFO]

[INFO] [INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ mavenAutoDeployDemo ---

[INFO] [INFO]

[INFO] [INFO] -------------------------------------------------------

[INFO] [INFO] T E S T S

[INFO] [INFO] -------------------------------------------------------

[INFO] [INFO] Running net.biancheng.www.AppTest

[INFO] [INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.023 s - in net.biancheng.www.AppTest

[INFO] [INFO]

[INFO] [INFO] Results:

[INFO] [INFO]

[INFO] [INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] [INFO]

[INFO] [INFO]

[INFO] [INFO] --- maven-jar-plugin:3.0.2:jar (default-jar) @ mavenAutoDeployDemo ---

[INFO] [INFO] Building jar: D:/eclipse workSpace 3/mavenAutoDeployDemo/target/mavenAutoDeployDemo-1.0.jar

[INFO] [INFO] ------------------------------------------------------------------------

[INFO] [INFO] BUILD SUCCESS

[INFO] [INFO] ------------------------------------------------------------------------

[INFO] [INFO] Total time: 3.531 s

[INFO] [INFO] Finished at: 2021-04-06T16:39:23+08:00

[INFO] [INFO] ------------------------------------------------------------------------

[INFO] Checking in modified POMs...

[INFO] Executing: cmd.exe /X /C git add -- pom.xml 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git rev-parse --show-toplevel 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git status --porcelain . 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[WARNING] Ignoring unrecognized line: ?? pom.xml.releaseBackup

[WARNING] Ignoring unrecognized line: ?? release.properties

[WARNING] Ignoring unrecognized line: ?? target/

[INFO] Executing: cmd.exe /X /C git commit --verbose -F C:/Users/79330/AppData/Local/Temp/maven-scm-302875220.commit pom.xml 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git symbolic-ref HEAD 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git push https://github.com/javmohan/mavenAutoDeployDemo.git refs/heads/main:refs/heads/main 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Tagging release with the label mavenAutoDeployDemo-1.0...

[INFO] Executing: cmd.exe /X /C git tag -F C:/Users/79330/AppData/Local/Temp/maven-scm-1133489209.commit mavenAutoDeployDemo-1.0 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git push https://github.com/javmohan/mavenAutoDeployDemo.git refs/tags/mavenAutoDeployDemo-1.0 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git ls-files 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Transforming mavenAutoDeployDemo ...

[INFO] Not removing release POMs

[INFO] Checking in modified POMs...

[INFO] Executing: cmd.exe /X /C git add -- pom.xml 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git rev-parse --show-toplevel 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git status --porcelain . 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[WARNING] Ignoring unrecognized line: ?? pom.xml.releaseBackup

[WARNING] Ignoring unrecognized line: ?? release.properties

[WARNING] Ignoring unrecognized line: ?? target/

[INFO] Executing: cmd.exe /X /C git commit --verbose -F C:/Users/79330/AppData/Local/Temp/maven-scm-918010337.commit pom.xml 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git symbolic-ref HEAD 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Executing: cmd.exe /X /C git push https://github.com/javmohan/mavenAutoDeployDemo.git refs/heads/main:refs/heads/main 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo

[INFO] Release preparation complete.

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 01:06 min

[INFO] Finished at: 2021-04-06T16:39:40+08:00

[INFO] ------------------------------------------------------------------------

mvn release:prepare 命令执行时，需要我们输入以下信息。


What is the release version for mavenAutoDeployDemo ? (net.biancheng.www:mavenAutoDeployDemo) 1.0: :

询问 mavenAutoDeployDemo 项目的发布版本是什么？默认值是 1.0，此处我们直接回车使用默认值。


What is SCM release tag or label for mavenAutoDeployDemo ? (net.biancheng.www:mavenAutoDeployDemo) mavenAutoDeployDemo-1.0: :

询问 mavenAutoDeployDemo 项目的 SCM 发布标签是什么？默认值是 mavenAutoDeployDemo-1.0，此处我们直接回车使用默认值。


What is the new development version for mavenAutoDeployDemo ? (net.biancheng.www:mavenAutoDeployDemo) 1.1-SNAPSHOT: :

询问 mavenAutoDeployDemo 项目新的开发版本是什么？默认值是1.1-SNAPSHOT，此处我们直接回车使用默认值。

命令执行完成后，查看该项目的 pom.xml，发现其版本号已经更新为 1.1-SNAPSHOT，如图 2 所示。

图2：更新版本号

6. 执行以下 mvn 命令，将正式版本的构件发布到 Nexus 中。


mvn release:perform

执行结果如下。


[INFO] Scanning for projects...

[INFO]

[INFO] --------------- net.biancheng.www:mavenAutoDeployDemo ----------------

[INFO] Building mavenAutoDeployDemo 1.1-SNAPSHOT

[INFO] --------------------------------[ jar ]---------------------------------

[INFO]

[INFO] --- maven-release-plugin:2.5.3:perform (default-cli) @ mavenAutoDeployDemo ---

[INFO] Checking out the project to perform the release ...

[INFO] Executing: cmd.exe /X /C git clone --branch mavenAutoDeployDemo-1.0 https://github.com/javmohan/mavenAutoDeployDemo.git D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo/target

[INFO] Executing: cmd.exe /X /C git ls-remote https://github.com/javmohan/mavenAutoDeployDemo.git 

[INFO] Working directory: C:/Users/79330/AppData/Local/Temp

[INFO] Executing: cmd.exe /X /C git fetch https://github.com/javmohan/mavenAutoDeployDemo.git 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout

[INFO] Executing: cmd.exe /X /C git checkout mavenAutoDeployDemo-1.0 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout

[INFO] Executing: cmd.exe /X /C git ls-files 

[INFO] Working directory: D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout

[INFO] Invoking perform goals in directory D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout

[INFO] Executing goals deploy ...

[WARNING] Maven will be executed in interactive mode, but no input stream has been configured for this MavenInvoker instance.

[INFO] [INFO] Scanning for projects...

[INFO] [INFO]

[INFO] [INFO] --------------- net.biancheng.www:mavenAutoDeployDemo ----------------

[INFO] [INFO] Building mavenAutoDeployDemo 1.0

[INFO] [INFO] --------------------------------[ jar ]---------------------------------

[INFO] [INFO]

[INFO] [INFO] --- maven-resources-plugin:3.0.2:resources (default-resources) @ mavenAutoDeployDemo ---

[INFO] [INFO] Using UTF-8 encoding to copy filtered resources.

[INFO] [INFO] skip non existing resourceDirectory D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout/src/main/resources

[INFO] [INFO]

[INFO] [INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ mavenAutoDeployDemo ---

[INFO] [INFO] Changes detected - recompiling the module!

[INFO] [INFO] Compiling 1 source file to D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout/target/classes

[INFO] [INFO]

[INFO] [INFO] --- maven-resources-plugin:3.0.2:testResources (default-testResources) @ mavenAutoDeployDemo ---

[INFO] [INFO] Using UTF-8 encoding to copy filtered resources.

[INFO] [INFO] skip non existing resourceDirectory D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout/src/test/resources

[INFO] [INFO]

[INFO] [INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ mavenAutoDeployDemo ---

[INFO] [INFO] Changes detected - recompiling the module!

[INFO] [INFO] Compiling 1 source file to D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout/target/test-classes

[INFO] [INFO]

[INFO] [INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ mavenAutoDeployDemo ---

[INFO] [INFO]

[INFO] [INFO] -------------------------------------------------------

[INFO] [INFO] T E S T S

[INFO] [INFO] -------------------------------------------------------

[INFO] [INFO] Running net.biancheng.www.AppTest

[INFO] [INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.019 s - in net.biancheng.www.AppTest

[INFO] [INFO]

[INFO] [INFO] Results:

[INFO] [INFO]

[INFO] [INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] [INFO]

[INFO] [INFO]

[INFO] [INFO] --- maven-jar-plugin:3.0.2:jar (default-jar) @ mavenAutoDeployDemo ---

[INFO] [INFO] Building jar: D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout/target/mavenAutoDeployDemo-1.0.jar

[INFO] [INFO]

[INFO] [INFO] --- maven-install-plugin:2.5.2:install (default-install) @ mavenAutoDeployDemo ---

[INFO] [INFO] Installing D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout/target/mavenAutoDeployDemo-1.0.jar to D:/myRepository/repository/net/biancheng/www/mavenAutoDeployDemo/1.0/mavenAutoDeployDemo-1.0.jar

[INFO] [INFO] Installing D:/eclipse workSpace 3/mavenAutoDeployDemo/target/checkout/pom.xml to D:/myRepository/repository/net/biancheng/www/mavenAutoDeployDemo/1.0/mavenAutoDeployDemo-1.0.pom

[INFO] [INFO]

[INFO] [INFO] --- maven-deploy-plugin:2.8.2:deploy (default-deploy) @ mavenAutoDeployDemo ---

[INFO] Uploading to bianchengbang_Release_hosted: http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/net/biancheng/www/mavenAutoDeployDemo/1.0/mavenAutoDeployDemo-1.0.jar

[INFO] Progress (1): 3.2 kB

[INFO] 

[INFO] Uploaded to bianchengbang_Release_hosted: http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/net/biancheng/www/mavenAutoDeployDemo/1.0/mavenAutoDeployDemo-1.0.jar (3.2 kB at 15 kB/s)

[INFO] Uploading to bianchengbang_Release_hosted: http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/net/biancheng/www/mavenAutoDeployDemo/1.0/mavenAutoDeployDemo-1.0.pom

[INFO] Progress (1): 4.1/4.7 kB

[INFO] Progress (1): 4.7 kB 

[INFO] 

[INFO] Uploaded to bianchengbang_Release_hosted: http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/net/biancheng/www/mavenAutoDeployDemo/1.0/mavenAutoDeployDemo-1.0.pom (4.7 kB at 42 kB/s)

[INFO] Downloading from bianchengbang_Release_hosted: http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/net/biancheng/www/mavenAutoDeployDemo/maven-metadata.xml

[INFO] Uploading to bianchengbang_Release_hosted: http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/net/biancheng/www/mavenAutoDeployDemo/maven-metadata.xml

[INFO] Progress (1): 312 B

[INFO] 

[INFO] Uploaded to bianchengbang_Release_hosted: http://localhost:8082/nexus/content/repositories/bianchengbang_Release_hosted/net/biancheng/www/mavenAutoDeployDemo/maven-metadata.xml (312 B at 5.2 kB/s)

[INFO] [INFO] ------------------------------------------------------------------------

[INFO] [INFO] BUILD SUCCESS

[INFO] [INFO] ------------------------------------------------------------------------

[INFO] [INFO] Total time: 4.080 s

[INFO] [INFO] Finished at: 2021-04-06T17:09:00+08:00

[INFO] [INFO] ------------------------------------------------------------------------

[INFO] Cleaning up after release...

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 18.437 s

[INFO] Finished at: 2021-04-06T17:09:00+08:00

[INFO] ------------------------------------------------------------------------

7. 访问 Nexus 用户界面，查看仓库列表，选中名称为 bianchengbang_Release_hosted 的宿主仓库，点击 Browse Index 选项卡，查看该仓库中的构件。我们会发现 mavenAutoDeployDemo-1.0.jar 已经被部署到 Nexus 仓库中，如下图。

图3：Nexus 仓库中查看构件

注意：
运行命令前，一定要将所有代码都提交到 Git，不然会报错。
当发布完成后，项目的版本号会自动更新，并且将正式版发布到指定的 Release 库中。

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