maven - 为什么 Maven(错误地？)将我的 SNAPSHOT 部署到发布存储库和快照存储库？

Question

我当前在尝试设置项目以部署到内部 Nexus 存储库时遇到问题。由于我对 Maven 总体来说还很陌生，所以我希望在如何设置分发管理方面有一些我不太理解的地方。

基本问题是，当我执行“mvn deploy”时， Artifact 已成功部署到快照存储库，但 Maven 也尝试将其部署到发布存储库，但失败了……正如它应该的那样。我对当前配置的理解是，它也不应该将其部署到发布存储库。

我已经在下面包含了各种配置元素，但我想知道我是否真的应该使用配置文件来管理该部分，以便仅定义快照构建，并且仅定义发布构建。

对此的任何帮助/澄清将非常感激。

我的 POM 中有以下内容用于分发管理:

<distributionManagement>
<repository>
  <id>internal-releases</id>
  <name>Internal Releases</name>
  <url>http://localhost:8081/nexus/content/repositories/releases</url>
</repository>
<snapshotRepository>
  <id>internal-snapshots</id>
  <name>Internal Snapshots</name>
  <url>http://localhost:8081/nexus/content/repositories/snapshots</url>
</snapshotRepository>
</distributionManagement>

在 POM 的其他位置，我进行了以下设置以允许使用这些存储库来获取 Artifact :

<repositories>
<repository>
  <id>internal-releases</id>
  <url>http://localhost:8081/nexus/content/repositories/releases</url>
  <snapshots><enabled>false</enabled></snapshots>
</repository>
<repository>
  <id>internal-snapshots</id>
  <url>http://localhost:8081/nexus/content/repositories/snapshots</url>
  <snapshots><enabled>true</enabled></snapshots>
</repository>
<!-- other repos, etc, etc -->
</repositories>

我的 settings.xml 中有正确的设置，以提供能够发布到我的计算机上运行的测试 Nexus 实例的凭据，并且它实际上正在成功部署快照。

问题在于它还尝试将快照部署到发布存储库，该存储库配置为禁止快照。

“mvn deploy”的输出包括以下内容:

[INFO] [deploy:deploy {execution: default-deploy}]
[INFO] Retrieving previous build number from internal-snapshots
Uploading: http://localhost:8081/nexus/content/repositories/snapshots/com/internal/service/1.0.0-SNAPSHOT/service-1.0.0-20101104.170338-8.war
405K uploaded  (service-1.0.0-20101104.170338-8.war)
[INFO] Retrieving previous metadata from internal-snapshots
[INFO] Uploading repository metadata for: 'snapshot com.internal:service:1.0.0-SNAPSHOT'
[INFO] Retrieving previous metadata from internal-snapshots
[INFO] Uploading repository metadata for: 'artifact com.internal:service'
[INFO] Uploading project information for service 1.0.0-20101104.170338-8
[INFO] [deploy:deploy-file {execution: default}]
[INFO] Retrieving previous build number from remote-repository
[INFO] repository metadata for: 'snapshot com.internal:service:1.0.0-SNAPSHOT' could not be found on repository: remote-repository, so will be created
Uploading: http://localhost:8081/nexus/content/repositories/releases/com/internal/service/1.0.0-SNAPSHOT/service-1.0.0-20101104.170338-1.jar
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error deploying artifact: Failed to transfer file: http://localhost:8081/nexus/content/repositories/releases/com/internal/service/1.0.0-SNAPSHOT/service-1.0.0-20101104.170338-1.jar. Return code is: 400

来自 Nexus 的日志包含以下内容(正如我所期望的那样):

jvm 1    | 2010-11-04 13:03:39 INFO  [p-759477796-118] - o.s.n.p.m.m.M2Repos~          - Storing of item releases:/com/internal/service/1.0.0-SNAPSHOT/service-1.0.0-20101104.170338-1.jar is forbidden by Maven Repository policy. Because releases is a RELEASE repository
jvm 1    | 2010-11-04 13:03:39 ERROR [p-759477796-118] - o.s.n.r.ContentPlex~          - Got exception during processing request "PUT http://localhost:8081/nexus/content/repositories/releases/com/internal/service/1.0.0-SNAPSHOT/service-1.0.0-20101104.170338-1.jar": Storing of item releases:/com/internal/service/1.0.0-SNAPSHOT/service-1.0.0-20101104.170338-1.jar is forbidden by Maven Repository policy. Because releases is a RELEASE repository

Answer 1

1. 在 pom 中定义以下属性

   <deployFileUrl>${project.distributionManagement.snapshotRepository.url}</deployFileUrl>
   

2. 按如下方式更改 maven-deploy-plugin 的配置:

   <plugin>
       <groupId>org.apache.maven.plugins</groupId>
       <artifactId>maven-deploy-plugin</artifactId>
       <version>2.5</version>
       <configuration>
           <skip>true</skip>
       </configuration>
       <executions>
           <execution>
               <phase>deploy</phase>
               <configuration>
                   <packaging>jar</packaging>
                   <generatePom>true</generatePom>
                   <url>${deployFileUrl}</url>
                   <artifactId>${project.artifactId}</artifactId>
                   <groupId>${project.groupId}</groupId>
                   <version>${project.version}</version>
                   <file>${project.build.directory}/${project.build.finalName}.jar</file>
               </configuration>
               <goals>
                   <goal>deploy-file</goal>
               </goals>
           </execution>
        </executions>
    </plugin>
   

3. 添加以下配置文件以使用存储库 url 设置deployFileUrl 属性

   <profiles>
       <profile>
           <id>release-mode</id>
           <properties>
               <deployFileUrl>${project.distributionManagement.repository.url}</deployFileUrl>
           </properties>
       </profile>
   </profiles>
   

4. 最后在maven-release-plugin中调用这个配置文件

   <plugin>
       <groupId>org.apache.maven.plugins</groupId>
       <artifactId>maven-release-plugin</artifactId>
       <version>2.0-beta-9</version>
       <configuration>
           <releaseProfiles>release-mode</releaseProfiles>
       </configuration>
    </plugin>