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社区首页 >问答首页 >从Plexus获取Maven实例

问从Plexus获取Maven实例
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Stack Overflow用户
提问于 2017-08-26 11:58:46
回答 1查看 1.5K关注 0票数 3

目前，我正试图让PlexusContainer在maven或eclipse执行上下文之外为我提供一个初始化的Maven-instance。

为此目的，我有以下代码(简化)：

代码语言：javascript
复制
PlexusContainer container = null;
try {
    container = new DefaultPlexusContainer();
    container.lookup(MavenResolutionTask.class).run();
    container.dispose();
} catch (Exception e) {
    e.printStackTrace();
}

// --- MavenResolutionTask.java:

@Component(role = MavenResolutionTask.class)
// ResolutionTask is an abstract class 
// implementing Runnable and extending CompletableFuture
public class MavenResolutionTask extends ResolutionTask {

    @Requirement
    private Maven maven;
}

考虑到我的pom.xml中有标准的pom.xml插件执行，我希望它能像这样工作。

不幸的是，运行此代码会产生一个LookupException，原因如下(为了简洁起见，省略了堆栈跟踪)：

代码语言：javascript
复制
WARN Sisu - Error injecting: org.apache.maven.project.DefaultProjectBuildingHelper
com.google.inject.ProvisionException: Guice provision errors:

1) No implementation for org.apache.maven.repository.RepositorySystem was bound.
  while locating org.apache.maven.project.DefaultProjectBuildingHelper

WARN Sisu - Error injecting: org.apache.maven.project.DefaultProjectBuilder
com.google.inject.ProvisionException: Guice provision errors:

1) No implementation for org.apache.maven.repository.RepositorySystem was bound.
  while locating org.apache.maven.project.DefaultProjectBuildingHelper
  at ClassRealm[plexus.core, parent: null]
  at ClassRealm[plexus.core, parent: null]
  while locating org.apache.maven.project.ProjectBuildingHelper
  while locating org.apache.maven.project.DefaultProjectBuilder

...

为了补救缺少的绑定，并防止自己不得不手动注册maven的完整依赖关系图，我尝试将我的依赖项中包含的组件描述符与为我的应用程序生成的组件描述符合并。

为此，我将所有依赖项复制到target/dependency中，并运行一些shell脚本来获取包含components.xml的所有依赖项的列表。

我将这些依赖项传递给dependency:unpack的执行，然后将提取的位置传递给元数据-合并如下：

代码语言：javascript
复制
<plugin>
    <groupId>org.codehaus.plexus</groupId>
    <artifactId>plexus-component-metadata</artifactId>
    <version>1.7.1</version>
    <executions>
        <execution>
            <id>process-classes</id>
            <goals>
                <goal>generate-metadata</goal>
            </goals>
        </execution>
        <execution>
            <id>process-test-classes</id>
            <goals>
                <goal>generate-test-metadata</goal>
            </goals>
        </execution>
        <execution>
            <id>merge-descriptors</id>
            <phase>process-classes</phase>
            <goals>
                <goal>merge-metadata</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <output>${plexus.outputFile}</output>
        <descriptors>
            <descriptor>${plexus.outputFile}</descriptor>
            <!--./aether-transport-wagon-1.1.0.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/aether-transport-wagon/META-INF/plexus/components.xml</descriptor>
            <!--./maven-aether-provider-3.1.0.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-aether-provider/META-INF/plexus/components.xml</descriptor>
            <!--./maven-artifact-manager-2.2.1.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-artifact-manager/META-INF/plexus/components.xml</descriptor>
            <!--./maven-core-3.1.1.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-core/META-INF/plexus/components.xml</descriptor>
            <!--./maven-model-builder-3.1.0.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-model-builder/META-INF/plexus/components.xml</descriptor>
            <!--./maven-plugin-registry-2.2.1.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-plugin-registry/META-INF/plexus/components.xml</descriptor>
            <!--./maven-profile-2.2.1.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-profile/META-INF/plexus/components.xml</descriptor>
            <!--./maven-project-2.2.1.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-project/META-INF/plexus/components.xml</descriptor>
            <!--./maven-settings-builder-3.1.1.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/maven-settings-builder/META-INF/plexus/components.xml</descriptor>
            <!--./org.eclipse.sisu.plexus-0.0.0.M2a.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/sisu-plexus/META-INF/plexus/components.xml</descriptor>
            <!--./plexus-cipher-1.4.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/plexus-cipher/META-INF/plexus/components.xml</descriptor>
            <!--./plexus-interactivity-api-1.0-alpha-6.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/plexus-interactivity-api/META-INF/plexus/components.xml</descriptor>
            <!--./plexus-sec-dispatcher-1.3.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/plexus-sec-dispatcher/META-INF/plexus/components.xml</descriptor>
            <!--./wagon-ssh-1.0.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/wagon-ssh/META-INF/plexus/components.xml</descriptor>
            <!--./wagon-ssh-common-1.0.jar.d/META-INF/plexus/components.xml-->
            <descriptor>${project.build.directory}/extracted-sources/wagon-ssh-common/META-INF/plexus/components.xml</descriptor>
        </descriptors>
    </configuration>
</plugin>

不幸的是，错误消息仍然存在，所以我想我的问题是:如何从Plexus获得一个Maven 实例？

为了完整起见，我目前正在使用以下依赖项：

代码语言：javascript
复制
[INFO] com.github.vogel612:dependency-analyzer:jar:0.0.1
[INFO] +- org.projectlombok:lombok:jar:1.16.16:compile
[INFO] +- commons-cli:commons-cli:jar:1.4:compile
[INFO] +- org.slf4j:slf4j-simple:jar:1.7.16:compile
[INFO] |  \- org.slf4j:slf4j-api:jar:1.7.16:compile
[INFO] +- org.codehaus.plexus:plexus-utils:jar:3.0.24:compile
[INFO] +- org.eclipse.aether:aether-api:jar:1.1.0:compile
[INFO] +- org.eclipse.aether:aether-util:jar:1.1.0:compile
[INFO] +- org.eclipse.aether:aether-impl:jar:1.1.0:compile
[INFO] |  \- org.eclipse.aether:aether-spi:jar:1.1.0:compile
[INFO] +- org.eclipse.aether:aether-connector-basic:jar:1.1.0:compile
[INFO] +- org.eclipse.aether:aether-transport-file:jar:1.1.0:compile
[INFO] +- org.eclipse.aether:aether-transport-http:jar:1.1.0:compile
[INFO] |  +- org.apache.httpcomponents:httpclient:jar:4.3.5:compile
[INFO] |  |  +- org.apache.httpcomponents:httpcore:jar:4.3.2:compile
[INFO] |  |  \- commons-codec:commons-codec:jar:1.6:compile
[INFO] |  \- org.slf4j:jcl-over-slf4j:jar:1.6.2:compile
[INFO] +- org.eclipse.aether:aether-transport-wagon:jar:1.1.0:compile
[INFO] |  \- org.apache.maven.wagon:wagon-provider-api:jar:1.0:compile
[INFO] +- org.apache.maven:maven-aether-provider:jar:3.1.0:compile
[INFO] |  +- org.apache.maven:maven-model:jar:3.1.0:compile
[INFO] |  +- org.apache.maven:maven-model-builder:jar:3.1.0:compile
[INFO] |  +- org.apache.maven:maven-repository-metadata:jar:3.1.0:compile
[INFO] |  +- org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.0.0.M2a:compile
[INFO] |  |  +- javax.enterprise:cdi-api:jar:1.0:compile
[INFO] |  |  |  +- javax.annotation:jsr250-api:jar:1.0:compile
[INFO] |  |  |  \- javax.inject:javax.inject:jar:1:compile
[INFO] |  |  +- com.google.guava:guava:jar:10.0.1:compile
[INFO] |  |  |  \- com.google.code.findbugs:jsr305:jar:1.3.9:compile
[INFO] |  |  +- org.sonatype.sisu:sisu-guice:jar:no_aop:3.1.0:compile
[INFO] |  |  |  \- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  |  \- org.eclipse.sisu:org.eclipse.sisu.inject:jar:0.0.0.M2a:compile
[INFO] |  |     \- asm:asm:jar:3.3.1:compile
[INFO] |  \- org.codehaus.plexus:plexus-component-annotations:jar:1.5.5:compile
[INFO] +- org.apache.maven.wagon:wagon-ssh:jar:1.0:compile
[INFO] |  +- com.jcraft:jsch:jar:0.1.44-1:compile
[INFO] |  \- org.apache.maven.wagon:wagon-ssh-common:jar:1.0:compile
[INFO] |     \- org.codehaus.plexus:plexus-interactivity-api:jar:1.0-alpha-6:compile
[INFO] +- org.apache.maven:maven-core:jar:3.1.1:compile
[INFO] |  +- org.apache.maven:maven-settings:jar:3.1.1:compile
[INFO] |  +- org.apache.maven:maven-settings-builder:jar:3.1.1:compile
[INFO] |  +- org.apache.maven:maven-artifact:jar:3.1.1:compile
[INFO] |  +- org.apache.maven:maven-plugin-api:jar:3.1.1:compile
[INFO] |  +- org.codehaus.plexus:plexus-interpolation:jar:1.19:compile
[INFO] |  +- org.codehaus.plexus:plexus-classworlds:jar:2.5.1:compile
[INFO] |  \- org.sonatype.plexus:plexus-sec-dispatcher:jar:1.3:compile
[INFO] |     \- org.sonatype.plexus:plexus-cipher:jar:1.4:compile
[INFO] \- org.apache.maven:maven-project:jar:2.2.1:compile
[INFO]    +- org.apache.maven:maven-profile:jar:2.2.1:compile
[INFO]    +- org.apache.maven:maven-artifact-manager:jar:2.2.1:compile
[INFO]    |  \- backport-util-concurrent:backport-util-concurrent:jar:3.1:compile
[INFO]    +- org.apache.maven:maven-plugin-registry:jar:2.2.1:compile
[INFO]    \- org.codehaus.plexus:plexus-container-default:jar:1.0-alpha-9-stable-1:compile
[INFO]       +- junit:junit:jar:3.8.1:compile
[INFO]       \- classworlds:classworlds:jar:1.1-alpha-2:compile
java
maven
dependency-injection
plexus
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2017-08-26 16:12:37

仔细阅读错误消息可能会有帮助：

缺少的组件是org.apache.maven.repository.RepositorySystem而不是org.eclipse.aether.RepositorySystem。虽然前者已经包括在内，但后者只存在于org.apache.maven:maven-compat中。

将它添加到依赖项(并包括它的组件定义)中，可以解决这里的直接问题。中间结果当前是用于NoClassDefFoundError的Lorg/apache/maven/artifact/transform/ArtifactTransformationManager，它可以通过实际使用依赖项的正确版本来解决。

作为最后一步，现在需要注册一个org.eclipse.aether.RepositorySystem实例和一个org.eclipse.aether.impl.RemoteRepositoryManager实例，这可以使用以下代码来完成：

代码语言：javascript
复制
final ServiceLocator serviceLocator = MavenRepositorySystemUtils.newServiceLocator()
        .addService(RepositoryConnectorFactory.class, BasicRepositoryConnectorFactory.class)
        .addService(TransporterFactory.class, FileTransporterFactory.class)
        .addService(TransporterFactory.class, HttpTransporterFactory.class);

 // ...
container.addComponent(serviceLocator.lookup(RepositorySystem.class)
    , RepositorySystem.class
    , "default");
container.addComponent(serviceLocator.lookup(RemoteRepositoryManager.class)
    , RemoteRepositoryManager.class
    , "default");

现在我们终于可以有一个maven实例了。

票数 5
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页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/45895098

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