maven nexus deploy方式以及相关注意事项

以前公司都是配管负责管理jar的，现在没有专职配管了，得自己部署到deploy上供使用。总的来说，jar部署到nexus上有两种方式：

1、直接登录nexus控制台进行上传，如下：

但是，某些仓库可能被设置了禁止控制台上传，如下：

这种情况下，只能通过mvn:deploy进行部署了。

2、命令行方式上传。使用mvn:deploy部署前需要在settings.xml中配置server节点，指定仓库编号和用户名密码，如下所示：

<server>
<id>snapshots</id>
<username>admin</username>
<password>admin123</password>
</server>

这里的id应该需要和命令行中的repositoryId相同，否则会报401没有权限。

mvn deploy:deploy-file -DgroupId=com.ld.net.spider -DartifactId=com.ld.net.spider.ext -Dversion=1.0.0-SNAPSHOT -Dpackaging=jar -Dfile=C:\新建文件夹\com.ld.net.spider.ext-1.0.0-SNAPSHOT.jar -Durl=http://172.18.30.181:8081/nexus/content/repositories/snapshots -DrepositoryId=snapshots
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building com.ld.net.spider.parent 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-deploy-plugin:2.7:deploy-file (default-cli) @ com.ld.net.spider.parent ---
Downloading: http://xxx:8081/nexus/content/repositories/snapshots/com/ld/net/spider/com.ld.net.spider.ext/maven-metadata.xml
Uploading: http://xxx:8081/nexus/content/repositories/snapshots/com/ld/net/spider/com.ld.net.spider.ext/1.0.0-SNAPSHOT/maven-metadata.xml
Uploaded: http://xxx:8081/nexus/content/repositories/snapshots/com/ld/net/spider/com.ld.net.spider.ext/1.0.0-SNAPSHOT/maven-metadata.xml (788 B at 26.5 KB/sec)
Uploading: http://xxx:8081/nexus/content/repositories/snapshots/com/ld/net/spider/com.ld.net.spider.ext/maven-metadata.xml
Uploaded: http://xxx:8081/nexus/content/repositories/snapshots/com/ld/net/spider/com.ld.net.spider.ext/maven-metadata.xml (298 B at 10.8 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.028 s
[INFO] Finished at: 2016-09-27T18:32:32+08:00
[INFO] Final Memory: 6M/16M
[INFO] ------------------------------------------------------------------------

还需要一点注意的就是要部署的jar/pom不能位于本地仓库所在的目录：否则会出错，如下所示：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy-file (default-cli) on project com.ld.net.spider.parent: Cannot deploy artifact from the local repository: C:\apache-maven-3.3.9\repo\com\ld\net\spider\com.ld.net.spider.parent\1.0.0-SNAPSHOT\com.ld.net.spider.parent-1.0.0-SNAPSHOT.pom -> [Help 1]

注意上述事项后，应该是没有问题的。

完整的mvn deploy使用指南见http://maven.apache.org/plugins/maven-deploy-plugin/usage.html。

常见错误

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy-file (default-cli) on project standalone-pom: Failed to deploy artifacts: Could not find artifact com.ld.net.spider:com.ld.net.spider:jar:1.0.1-20161008.032827-1 in snapshots (http://172.18.30.181:8081/nexus/content/groups/snapshots) -> [Help 1]

仓库http://172.18.30.181:8081/nexus/content/groups/snapshots所指向的地址不存在。

maven settings.xml的完整配置可参考http://maven.apache.org/settings.html，pom.xml的完整配置可参考https://maven.apache.org/pom.html。