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為什么我的 maven 項目無法解析私有 sonatype-nexus maven 存儲庫的依賴項？

[英]Why my maven project is not able to resolve dependency from private sonatype-nexus maven repository?

 原文  2023-01-15 12:01:54  7   2    java/ maven/ pom.xml/ nexus/ sonatype

問題描述

我已經在 aws ec2 實例上部署了一個私有 maven 存儲庫。 如圖所示，我能夠成功部署一些人工制品。

Maven 倉庫

Maven 倉庫

我的 settings.xml 如下所示

<settings>
  <mirrors>
    <mirror>
      <!--This sends everything else to /public -->
      <id>nexus</id>
      <mirrorOf>*</mirrorOf>
      <url>http://maven.tarkshala.com:10081/repository/maven-tarkshala-central/</url>
    </mirror>
  </mirrors>
  <profiles>
    <profile>
      <id>nexus</id>
      <!--Enable snapshots for the built in central repo to direct -->
      <!--all requests to nexus via the mirror -->
      <repositories>
        <repository>
          <id>central</id>
          <url>http://central</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </repository>
      </repositories>
     <pluginRepositories>
        <pluginRepository>
          <id>central</id>
          <url>http://central</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
<activeProfiles>
    <!--make the profile active all the time -->
    <activeProfile>nexus</activeProfile>
  </activeProfiles>
  <servers>
    <server>
      <id>nexus</id>
      <username>admin</username>
      <password>tarkshala</password> 
    </server>
  </servers>
</settings>

我的項目 pom 文件看起來像這樣

<?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/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.tarkshala.dhaba</groupId>
    <artifactId>user-service</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>UserService</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <dropwizard.version>2.1.4</dropwizard.version>
        <dropwizard.guicey.version>5.4.1</dropwizard.guicey.version>
        <dropwizard.swagger.version>2.0.16-SNAPSHOT</dropwizard.swagger.version>
        <lombok.version>1.18.24</lombok.version>
        <db.sharding.bundle.version>2.0.28-5</db.sharding.bundle.version>
        <mariadb.version>3.1.0</mariadb.version>

        <mainClass>com.tarkshala.dhaba.UserServiceApplication</mainClass>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.dropwizard</groupId>
                <artifactId>dropwizard-dependencies</artifactId>
                <version>${dropwizard.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>io.dropwizard</groupId>
            <artifactId>dropwizard-core</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>
        <dependency>
            <groupId>jakarta.validation</groupId>
            <artifactId>jakarta.validation-api</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate.validator</groupId>
            <artifactId>hibernate-validator</artifactId>
        </dependency>
        <dependency>
            <groupId>io.dropwizard</groupId>
            <artifactId>dropwizard-hibernate</artifactId>
        </dependency>
        <dependency>
            <groupId>io.dropwizard</groupId>
            <artifactId>dropwizard-db</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
        </dependency>

        <dependency>
            <groupId>com.tarkshala</groupId>
            <artifactId>dropwizard-swagger</artifactId>
            <version>2.0.16-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
        </dependency>

        <dependency>
            <groupId>ru.vyarus</groupId>
            <artifactId>dropwizard-guicey</artifactId>
            <version>${dropwizard.guicey.version}</version>
        </dependency>

        <dependency>
            <groupId>io.appform.dropwizard.sharding</groupId>
            <artifactId>db-sharding-bundle</artifactId>
            <version>${db.sharding.bundle.version}</version>
        </dependency>

        <dependency>
            <groupId>org.mariadb.jdbc</groupId>
            <artifactId>mariadb-java-client</artifactId>
            <version>${mariadb.version}</version>
        </dependency>

        <dependency>
            <groupId>com.tarkshala</groupId>
            <artifactId>tarkshala-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>com.tarkshala.dhaba</groupId>
            <artifactId>userservice-models</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.4.0</version>
                <configuration>
                    <createDependencyReducedPom>true</createDependencyReducedPom>
                    <transformers>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                            <mainClass>${mainClass}</mainClass>
                        </transformer>
                    </transformers>
                    <!-- exclude signed Manifests -->
                    <filters>
                        <filter>
                            <artifact>*:*</artifact>
                            <excludes>
                                <exclude>META-INF/*.SF</exclude>
                                <exclude>META-INF/*.DSA</exclude>
                                <exclude>META-INF/*.RSA</exclude>
                            </excludes>
                        </filter>
                    </filters>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.3.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <mainClass>${mainClass}</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.10.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.22.2</version>
            </plugin>
            <plugin>
                <artifactId>maven-source-plugin</artifactId>
                <version>3.2.1</version>
                <executions>
                    <execution>
                        <id>attach-sources</id>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <artifactId>maven-javadoc-plugin</artifactId>
                <version>3.4.1</version>
                <executions>
                    <execution>
                        <id>attach-javadocs</id>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>9</source><target>9</target></configuration></plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>8</source>
                    <target>8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>9</source>
                    <target>9</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <reporting>
        <plugins>
            <plugin>
                <artifactId>maven-project-info-reports-plugin</artifactId>
                <version>3.4.1</version>
                <configuration>
                    <dependencyLocationsEnabled>false</dependencyLocationsEnabled>
                    <dependencyDetailsEnabled>false</dependencyDetailsEnabled>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-javadoc-plugin</artifactId>
                <version>3.4.1</version>
            </plugin>
        </plugins>
    </reporting>
    <profiles>
        <profile>
            <id>java11+</id>
            <activation>
                <jdk>[11,)</jdk>
            </activation>
            <properties>
                <!--
                Workaround for "javadoc: error - The code being documented uses modules but the packages
                defined in https://docs.oracle.com/javase/8/docs/api/ are in the unnamed module."
                -->
                <maven.javadoc.skip>true</maven.javadoc.skip>
            </properties>
        </profile>
    </profiles>
</project>

但是當我嘗試使用mvn clean install構建它時，它失敗了，因為無法解決依賴關系並出現以下錯誤：

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.395 s
[INFO] Finished at: 2023-01-15T16:22:06+05:30
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project user-service: Could not resolve dependencies for project com.tarkshala.dhaba:user-service:jar:1.0-SNAPSHOT: The following artifacts could not be resolved: com.tarkshala:dropwizard-swagger:jar:2.0.16-SNAPSHOT, com.tarkshala:tarkshala-common:jar:1.0-SNAPSHOT: com.tarkshala:dropwizard-swagger:jar:2.0.16-SNAPSHOT was not found in http://maven.tarkshala.com:10081/repository/maven-tarkshala-central/ during a previous attempt. This failure was cached in the local repository and resolution is not reattempted until the update interval of nexus has elapsed or updates are forced -> [Help 1]

發生這種情況是因為我的人工制品存在於maven-snapshots而不是maven-tarkshala-central 。

我應該更改什么以解決兩者的依賴關系？

2 個解決方案

解決方案1
 0  2023-01-15 12:24:26

This failure was cached in the local repository and resolution is not reattempted until the update interval of nexus has elapsed or updates are forced

  • Go 到本地 maven 存儲庫~/.mvn/並刪除io.dropwizard文件夾。
  • 然后使用mvn clean install -U構建

解決方案2
 0  2023-01-15 17:35:36

我終於想通了。 基本上，nexus 存儲庫系統有以下三種類型。

  1. 代理，用於制作中間人倉庫以緩存 maven 中央倉庫。 在這個例子中它是maven-tarkshala-central
  2. 托管，用於部署我們的私有工件。 在此示例中，它是maven-snapshots和maven-releases 。

我的 settings.xml 指向代理，因此它能夠解析所有外部依賴項但無法解析私有依賴項。 如果我將它指向托管之一，它會解析為私有但不是中央。

  1. 組，還有第三種類型的存儲庫，有助於處理上述問題。 它充當父存儲庫，並將代理和托管存儲庫作為成員。 因此，所有三個maven-tarkshala-central, maven-snapshots, maven-releases可用的所有依賴項都可用於此 repo，如屏幕截圖所示。

組回購配置

檢查組中可用的成員，注意順序。

更新 settings.xml 以使用組 repo url，如下所示

<settings>
    <mirrors>
      <mirror>
        <!--This sends everything else to /public -->
        <id>nexus</id>
        <mirrorOf>*</mirrorOf>
        <url>http://maven.tarkshala.com:10081/repository/maven-public/</url>
      </mirror>
    </mirrors>
    <profiles>
      <profile>
        <id>nexus</id>
        <!--Enable snapshots for the built in central repo to direct -->
        <!--all requests to nexus via the mirror -->
        <repositories>
          <repository>
            <id>central</id>
            <url>http://central</url>
            <releases><enabled>true</enabled></releases>
            <snapshots><enabled>true</enabled></snapshots>
          </repository>
        </repositories>
       <pluginRepositories>
          <pluginRepository>
            <id>central</id>
            <url>http://central</url>
            <releases><enabled>true</enabled></releases>
            <snapshots><enabled>true</enabled></snapshots>
          </pluginRepository>
        </pluginRepositories>
      </profile>
    </profiles>
  <activeProfiles>
      <!--make the profile active all the time -->
      <activeProfile>nexus</activeProfile>
    </activeProfiles>
    <servers>
      <server>
        <id>nexus</id>
        <username>admin</username>
        <password>tarkshala</password> 
      </server>
    </servers>
  </settings>

現在很高興使用mvn clean install構建 :)

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