极狐gitlab maven packages 仓库使用

官方文档：Maven packages in the Package Repository | GitLab

极狐gitlab版本：gitlab-jh v15.0.2 旗舰版

1. 创建 maven 项目

1.1 创建 p1 项目

创建 leffss/p1 项目，添加以下文件：

src/main/java/com/mycompany/app/App.java

package com.mycompany.app;

/**
 * Hello world!
 */
public class App
{

    private final String message = "Hello World!";

    public App() {}

    public static void main(String[] args) {
        System.out.println(new App().getMessage());
    }

    private final String getMessage() {
        return message;
    }

}

src/test/java/com/mycompany/app/AppTest.java

package com.mycompany.app;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import org.junit.Before;
import org.junit.Test;
import org.junit.After;
import static org.junit.Assert.*;

/**
 * Unit test for simple App.
 */
public class AppTest
{

    private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();

    @Before
    public void setUpStreams() {
        System.setOut(new PrintStream(outContent));
    }

    @Test
    public void testAppConstructor() {
        try {
            new App();
        } catch (Exception e) {
            fail("Construction failed.");
        }
    }

    @Test
    public void testAppMain()
    {
        App.main(null);
        try {
            assertEquals("Hello World!" + System.getProperty("line.separator"), outContent.toString());
        } catch (AssertionError e) {
            fail("\"message\" is not \"Hello World!\"");
        }
    }

    @After
    public void cleanUpStreams() {
        System.setOut(null);
    }

}

pom.xml

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-app</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.2</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.1</version>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>
        <!-- Build an executable JAR -->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <version>3.2.0</version>
        <configuration>
          <archive>
            <manifest>
              <addClasspath>true</addClasspath>
              <classpathPrefix>lib/</classpathPrefix>
              <mainClass>com.mycompany.app.App</mainClass>
            </manifest>
          </archive>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>3.0.0-M3</version>
        <executions>
          <execution>
            <id>enforce-maven</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireMavenVersion>
                  <version>[3.5.4,)</version>
                </requireMavenVersion>
              </rules>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

1.2 创建 p2 项目

创建 leffss/p2 项目，添加以下文件：

src/main/java/com/mycompany/app2/App.java

package com.mycompany.app2;

/**
 * Hello world!
 */
public class App
{

    private final String message = "Hello World!";

    public App() {}

    public static void main(String[] args) {
        System.out.println(new App().getMessage());
    }

    private final String getMessage() {
        return message;
    }

}

src/test/java/com/mycompany/app2/AppTest.java

package com.mycompany.app2;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import org.junit.Before;
import org.junit.Test;
import org.junit.After;
import static org.junit.Assert.*;

/**
 * Unit test for simple App.
 */
public class AppTest
{

    private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();

    @Before
    public void setUpStreams() {
        System.setOut(new PrintStream(outContent));
    }

    @Test
    public void testAppConstructor() {
        try {
            new App();
        } catch (Exception e) {
            fail("Construction failed.");
        }
    }

    @Test
    public void testAppMain()
    {
        App.main(null);
        try {
            assertEquals("Hello World!" + System.getProperty("line.separator"), outContent.toString());
        } catch (AssertionError e) {
            fail("\"message\" is not \"Hello World!\"");
        }
    }

    @After
    public void cleanUpStreams() {
        System.setOut(null);
    }

}

pom.xml

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mycompany.app2</groupId>
  <artifactId>my-app2</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-app2</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.2</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.1</version>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>
        <!-- Build an executable JAR -->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <version>3.2.0</version>
        <configuration>
          <archive>
            <manifest>
              <addClasspath>true</addClasspath>
              <classpathPrefix>lib/</classpathPrefix>
              <mainClass>com.mycompany.app2.App</mainClass>
            </manifest>
          </archive>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>3.0.0-M3</version>
        <executions>
          <execution>
            <id>enforce-maven</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireMavenVersion>
                  <version>[3.5.4,)</version>
                </requireMavenVersion>
              </rules>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

2. 上传到 package 仓库

在 leffss/p1 项目中操作

2.1 上传 package

项目根目录创建 maven 配置文件 ci_settings.xml：

<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
  <servers>
    <server>
      <id>gitlab-maven</id>
      <configuration>
        <httpHeaders>
          <property>
            <name>Job-Token</name>
            <value>${CI_JOB_TOKEN}</value>
          </property>
        </httpHeaders>
      </configuration>
    </server>
  </servers>
</settings>

pom.xml 新增 repositories 与 distributionManagement 配置：

...
  <url>http://maven.apache.org</url>
  <repositories>
    <repository>
      <id>gitlab-maven</id>
      <url>${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/maven</url>
    </repository>
  </repositories>
  <distributionManagement>
    <repository>
      <id>gitlab-maven</id>
      <url>${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/maven</url>
    </repository>
    <snapshotRepository>
      <id>gitlab-maven</id>
      <url>${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/maven</url>
    </snapshotRepository>
  </distributionManagement>
  <dependencies>
...

项目根目录创建新增 .gitlab-ci.yml

stages:
  - deploy

deploy:
  stage: deploy
  image: maven:3.8.5-jdk-11
  script:
    - 'mvn deploy -s ci_settings.xml'
  artifacts:
    paths:
      - target/
  only:
    - tags

给项目添加一个 tag 就会触发 pipeline：

打包并上传成功：

2.2 查看 package

项目 > Packages & Registries > Package Registry

多次上传相同版本不会覆盖，因为 gitlab 会为每次提交的 pom 和 jar 文件添加一个时间与序号

其中 maven-metadata.xml 记录了最新的提交信息

<?xml version="1.0" encoding="UTF-8"?>
<metadata modelVersion="1.1.0">
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <versioning>
    <lastUpdated>20220609085206</lastUpdated>
    <snapshot>
      <timestamp>20220609.085206</timestamp>
      <buildNumber>2</buildNumber>
    </snapshot>
    <snapshotVersions>
      <snapshotVersion>
        <extension>jar</extension>
        <value>1.0-20220609.085206-2</value>
        <updated>20220609085206</updated>
      </snapshotVersion>
      <snapshotVersion>
        <extension>pom</extension>
        <value>1.0-20220609.085206-2</value>
        <updated>20220609085206</updated>
      </snapshotVersion>
    </snapshotVersions>
  </versioning>
  <version>1.0-SNAPSHOT</version>
</metadata>

注意：上传到项目仓库时，组仓库也是可以看到并使用的

提交多版本时：

3. 使用 package

在 leffss/p2 项目中操作，方法是使用 mvn dependency:get 测试是否能够正常下载刚才上传的 maven 包。

项目根目录创建 maven 配置文件 ci_settings.xml：

<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
  <servers>
    <server>
      <id>gitlab-maven</id>
      <configuration>
        <httpHeaders>
          <property>
            <name>Job-Token</name>
            <value>${CI_JOB_TOKEN}</value>
          </property>
        </httpHeaders>
      </configuration>
    </server>
  </servers>
</settings>

pom.xml 新增 repositories 、 distributionManagement 与 dependency 配置：

...
  <url>http://maven.apache.org</url>
  <repositories>
    <repository>
      <id>gitlab-maven</id>
      <url>http://gitlab.example.com/api/v4/projects/3/packages/maven</url>
    </repository>
  </repositories>
  <distributionManagement>
    <repository>
      <id>gitlab-maven</id>
      <url>http://gitlab.example.com/api/v4/projects/3/packages/maven</url>
    </repository>
    <snapshotRepository>
      <id>gitlab-maven</id>
      <url>http://gitlab.example.com/api/v4/projects/3/packages/maven</url>
    </snapshotRepository>
  </distributionManagement>
  <dependencies>
    <dependency>
      <groupId>com.mycompany.app</groupId>
      <artifactId>my-app</artifactId>
      <version>1.0-SNAPSHOT</version>
    </dependency>
    <dependency>
...

http://gitlab.example.com/api/v4/projects/3/packages/maven 中的 3 为 leffss/p1 的项目 id

项目根目录创建新增 .gitlab-ci.yml

stages:
  - test

test:
  stage: test
  image: maven:3.8.5-jdk-11
  script:
    - 'mvn -s ci_settings.xml dependency:get -Dartifact=com.mycompany.app:my-app:1.0-SNAPSHOT'

运行 pipeline 发现报错：

...
Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-container-default/1.0-alpha-9-stable-1/plexus-container-default-1.0-alpha-9-stable-1.jar (194 kB at 23 kB/s)
[INFO] Resolving com.mycompany.app:my-app:jar:1.0-SNAPSHOT with transitive dependencies
Downloading from maven-default-http-blocker: http://0.0.0.0/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml
[WARNING] Could not transfer metadata com.mycompany.app:my-app:1.0-SNAPSHOT/maven-metadata.xml from/to maven-default-http-blocker (http://0.0.0.0/): transfer failed for http://0.0.0.0/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  02:31 min
[INFO] Finished at: 2022-06-09T12:17:38Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.8:get (default-cli) on project my-app2: Couldn't download artifact: Unable to get dependency information for com.mycompany.app:my-app:jar:1.0-SNAPSHOT: Failed to retrieve POM for com.mycompany.app:my-app:jar:1.0-SNAPSHOT: Could not transfer artifact com.mycompany.app:my-app:pom:1.0-SNAPSHOT from/to maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for repositories: [gitlab-maven (http://gitlab.example.com/api/v4/projects/3/packages/maven, default, releases+snapshots)]
[ERROR]   com.mycompany.app:my-app:jar:1.0-SNAPSHOT
[ERROR] 
[ERROR] from the specified remote repositories:
[ERROR]   maven-default-http-blocker (http://0.0.0.0/, releases=true, snapshots=true),
[ERROR]   central (https://repo.maven.apache.org/maven2, releases=true, snapshots=false)
[ERROR] Path to dependency: 
[ERROR] 	1) org.apache.maven.plugins:maven-downloader-plugin:jar:1.0
[ERROR] 
[ERROR] 
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
ERROR: Job failed: command terminated with exit code 1

原因是 maven 从3.8.1版本开始，禁止了从 http 协议的仓库地址下载依赖

解决方法一：使用低版本 maven

stages:
  - test

test:
  stage: test
  image: maven:3.6.3-jdk-11
  script:
    - 'mvn -s ci_settings.xml dependency:get -Dartifact=com.mycompany.app:my-app:1.0-SNAPSHOT'

运行 pipeline 成功：

...
Downloaded from central: https://repo.maven.apache.org/maven2/classworlds/classworlds/1.1/classworlds-1.1.jar (38 kB at 4.3 kB/s)
Progress (2): 98/284 kB | 98/575 kB
Progress (2): 163/284 kB | 163/575 kB
Progress (2): 212/284 kB | 229/575 kB
Progress (2): 278/284 kB | 311/575 kB
Downloaded from central: https://repo.maven.apache.org/maven2/commons-lang/commons-lang/2.6/commons-lang-2.6.jar (284 kB at 26 kB/s)
Progress (1): 360/575 kB
Progress (1): 442/575 kB
Progress (1): 507/575 kB
Progress (1): 575 kB    
Downloaded from central: https://repo.maven.apache.org/maven2/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar (575 kB at 45 kB/s)
[INFO] Resolving com.mycompany.app:my-app:jar:1.0-SNAPSHOT with transitive dependencies
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml
Downloaded from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml (767 B at 7.0 kB/s)
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0-20220609.085206-2.pom
Downloaded from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0-20220609.085206-2.pom (2.7 kB at 30 kB/s)
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/junit/junit/4.13.2/junit-4.13.2.pom
Downloading from central: https://repo.maven.apache.org/maven2/junit/junit/4.13.2/junit-4.13.2.pom
Progress (1): 16/27 kB
Downloaded from central: https://repo.maven.apache.org/maven2/junit/junit/4.13.2/junit-4.13.2.pom (27 kB at 44 kB/s)
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.pom
Downloading from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.pom
Progress (1): 766 B
Downloaded from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.pom (766 B at 1.9 kB/s)
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/org/hamcrest/hamcrest-parent/1.3/hamcrest-parent-1.3.pom
Downloading from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-parent/1.3/hamcrest-parent-1.3.pom
Progress (1): 2.0 kB
Downloaded from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-parent/1.3/hamcrest-parent-1.3.pom (2.0 kB at 4.9 kB/s)
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/junit/junit/4.13.2/junit-4.13.2.jar
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0-20220609.085206-2.jar
Downloading from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar
Downloading from central: https://repo.maven.apache.org/maven2/junit/junit/4.13.2/junit-4.13.2.jar
Downloaded from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0-20220609.085206-2.jar (2.8 kB at 29 kB/s)
Progress (2): 16/385 kB | 16/45 kB
Downloaded from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar (45 kB at 56 kB/s)
Progress (1): 163/385 kB
Progress (1): 245/385 kB
Progress (1): 311/385 kB
Progress (1): 376/385 kB
Downloaded from central: https://repo.maven.apache.org/maven2/junit/junit/4.13.2/junit-4.13.2.jar (385 kB at 122 kB/s)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  02:30 min
[INFO] Finished at: 2022-06-09T13:03:06Z
[INFO] ------------------------------------------------------------------------
Job succeeded

解决方法二：参考 How to disable maven blocking external HTTP repositories? - Stack Overflow

ci_settings.xml 新增 mirrors 配置：

<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
  <servers>
    <server>
      <id>gitlab-maven</id>
      <configuration>
        <httpHeaders>
          <property>
            <name>Job-Token</name>
            <value>${CI_JOB_TOKEN}</value>
          </property>
        </httpHeaders>
      </configuration>
    </server>
  </servers>
  <mirrors>
    <mirror>
      <id>maven-default-http-blocker</id>
      <mirrorOf>external:http:*</mirrorOf>
      <name>Pseudo repository to mirror external repositories initially using HTTP.</name>
      <url>http://gitlab.example.com/api/v4/projects/3/packages/maven/</url>
    </mirror>
  </mirrors>
</settings>

经过测试，pipeline 还是失败：

...
Progress (1): 575 kB    
Downloaded from central: https://repo.maven.apache.org/maven2/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar (575 kB at 21 kB/s)
[INFO] Resolving com.mycompany.app:my-app:jar:1.0-SNAPSHOT with transitive dependencies
Downloading from maven-default-http-blocker: http://0.0.0.0/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml
[WARNING] Could not transfer metadata com.mycompany.app:my-app:1.0-SNAPSHOT/maven-metadata.xml from/to maven-default-http-blocker (http://0.0.0.0/): transfer failed for http://0.0.0.0/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  03:04 min
[INFO] Finished at: 2022-06-09T13:57:11Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.8:get (default-cli) on project my-app2: Couldn't download artifact: Unable to get dependency information for com.mycompany.app:my-app:jar:1.0-SNAPSHOT: Failed to retrieve POM for com.mycompany.app:my-app:jar:1.0-SNAPSHOT: Could not transfer artifact com.mycompany.app:my-app:pom:1.0-SNAPSHOT from/to maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for repositories: [gitlab-maven (http://gitlab.example.com/api/v4/projects/3/packages/maven, default, releases+snapshots)]
[ERROR]   com.mycompany.app:my-app:jar:1.0-SNAPSHOT
[ERROR] 
[ERROR] from the specified remote repositories:
[ERROR]   maven-default-http-blocker (http://0.0.0.0/, releases=true, snapshots=true),
[ERROR]   central (https://repo.maven.apache.org/maven2, releases=true, snapshots=false)
[ERROR] Path to dependency: 
[ERROR] 	1) org.apache.maven.plugins:maven-downloader-plugin:jar:1.0
[ERROR] 
[ERROR] 
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
ERROR: Job failed: command terminated with exit code 1

对比了一下正常情况下，下载请求为：

http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml
http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0-20220609.085206-2.pom
http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0-20220609.085206-2.jar

首先获取 maven-metadata.xml ，然后再从中获取到后面 pom 和 jar 的正确名称

但是使用 mirror 方式下，下载请求为：

http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/maven-metadata.xml
http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0-SNAPSHOT.pom
http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/1.0-SNAPSHOT/my-app-1.0.jar

这样子就无法下载到 pom 与 jar 了。由于对 maven 不是太熟悉，原因未知。

解决方法三：搭建 gitlab 时开启 https（强烈建议使用有效证书）

4. 使用 api 直接上传 package

参考：Maven API | GitLab

4.1 添加项目 Deploy tokens

项目 > settings > Repository > Deploy tokens，权限选择：read_package_registry、write_package_registry

4.2 api 上传 package

上传命令：

curl --request PUT \
     --upload-file my-app-3.0.pom \
     --header "Deploy-Token: t42PhRv6ighShpChNZSD" \
     "http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/3.0-SNAPSHOT/my-app-3.0-SNAPSHOT.pom"

curl --request PUT \
     --upload-file my-app-3.0.jar \
     --header "Deploy-Token: t42PhRv6ighShpChNZSD" \
     "http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/3.0-SNAPSHOT/my-app-3.0-SNAPSHOT.jar"

如果 token 是个人token，则将 Deploy-Token 改为 Private-Token 即可

4.3 查看 api 上传的 package

结果：

可以看到上传的文件名称和在 ci/cd 任务上传有区别的（未添加时间和序号），然后也没有 maven-metadata.xml 文件

4.4 测试 api 上传的 package 可用性

在 leffss/p2 中测试 3.0 版本：

修改 pom.xml 文件：

...
  <dependencies>
    <dependency>
      <groupId>com.mycompany.app</groupId>
      <artifactId>my-app</artifactId>
      <version>3.0-SNAPSHOT</version>
    </dependency>
    <dependency>
...

修改 .gitlab-ci.yml 文件：

stages:
  - test

test:
  stage: test
  image: maven:3.6.3-jdk-11
  script:
    - 'mvn -s ci_settings.xml dependency:get -Dartifact=com.mycompany.app:my-app:3.0-SNAPSHOT'

pipeline 运行成功：

...
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/3.0-SNAPSHOT/my-app-3.0-SNAPSHOT.jar
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/junit/junit/4.13.2/junit-4.13.2.jar
Downloading from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar
Downloading from central: https://repo.maven.apache.org/maven2/junit/junit/4.13.2/junit-4.13.2.jar
Downloading from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar
Downloaded from gitlab-maven: http://gitlab.example.com/api/v4/projects/3/packages/maven/com/mycompany/app/my-app/3.0-SNAPSHOT/my-app-3.0-SNAPSHOT.jar (2.8 kB at 29 kB/s)
Progress (1): 45 kB   
Downloaded from central: https://repo.maven.apache.org/maven2/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar (45 kB at 113 kB/s)
Downloaded from central: https://repo.maven.apache.org/maven2/junit/junit/4.13.2/junit-4.13.2.jar (385 kB at 811 kB/s)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  01:55 min
[INFO] Finished at: 2022-06-10T00:42:03Z
[INFO] ------------------------------------------------------------------------
Job succeeded

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原文地址：https://www.cnblogs.com/leffss/p/16476298.html