如何从 java 代码中获取所有插件，包括默认插件？马文
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【中文标题】如何从 java 代码中获取所有插件，包括默认插件？马文【英文标题】：How can I get all plugins from java code including default plugins? Maven 【发布时间】：2021-11-25 19:51:33 【问题描述】：当我使用 help:effective-pom 构建有效模型时，我会得到这样的插件
<plugins>
<plugin>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>2.15</version>
<configuration>
<configLocation>checkstyle.xml</configLocation>
<includeTests>true</includeTests>
<linkXRef>false</linkXRef>
</configuration>
</plugin>
<plugin>
<artifactId>maven-pmd-plugin</artifactId>
<version>3.6</version>
</plugin>
<plugin>
<groupId>some-group-id</groupId>
<artifactId>build-express</artifactId>
<version>2.2.0</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.8</version>
<dependencies>
<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant</artifactId>
<version>1.7.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>jdom</groupId>
<artifactId>jdom</artifactId>
<version>0.7</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.5.0</version>
<scope>system</scope>
<systemPath>C:\Tools\java\jdk1.8.0_74\jre/../lib/tools.jar</systemPath>
</dependency>
</dependencies>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<archive>
<manifestEntries>
<Built-By>Apache Maven</Built-By>
</manifestEntries>
<addMavenDescriptor>false</addMavenDescriptor>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>xml-maven-plugin</artifactId>
<version>1.0.1</version>
<executions>
<execution>
<goals>
<goal>validate</goal>
</goals>
<configuration>
<validationSets>
<validationSet>
<dir>dish_common/install</dir>
<includes>
<include>**/*.xml</include>
</includes>
</validationSet>
<validationSet>
<dir>dish_common/settings</dir>
<includes>
<include>**/*.xml</include>
</includes>
</validationSet>
</validationSets>
</configuration>
</execution>
</executions>
<inherited>false</inherited>
<configuration>
<validationSets>
<validationSet>
<dir>dish_common/install</dir>
<includes>
<include>**/*.xml</include>
</includes>
</validationSet>
<validationSet>
<dir>dish_common/settings</dir>
<includes>
<include>**/*.xml</include>
</includes>
</validationSet>
</validationSets>
</configuration>
</plugin>
<plugin>
<groupId>some-group-id</groupId>
<artifactId>some-our-plugin</artifactId>
<version>3.7.0</version>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
<executions>
<execution>
<id>default-clean</id>
<phase>clean</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>default-install</id>
<phase>install</phase>
<goals>
<goal>install</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<id>default-deploy</id>
<phase>deploy</phase>
<goals>
<goal>deploy</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.3</version>
<executions>
<execution>
<id>default-site</id>
<phase>site</phase>
<goals>
<goal>site</goal>
</goals>
<configuration>
<outputDirectory>C:\Workspace\Projects\Dish\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</execution>
<execution>
<id>default-deploy</id>
<phase>site-deploy</phase>
<goals>
<goal>deploy</goal>
</goals>
<configuration>
<outputDirectory>C:\Workspace\Projects\Dish\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</execution>
</executions>
<configuration>
<outputDirectory>C:\Workspace\Projects\Dish\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</plugin>
</plugins>
</build>
（将我们插件的 GAV 替换为缩写）
但是当我从 java 代码中获得有效模型时，我没有得到最后 4 个插件。
Java 代码
ModelBuilder modelBuilder = new DefaultModelBuilderFactory().newInstance();
ModelResolver modelResolver = ModelResolverFactory.create(aetherArtifactResolver, remoteRepositoryManager, mavenProject);
DefaultModelBuildingRequest modulebr = new DefaultModelBuildingRequest();
modulebr.setPomFile(projectPom);
modulebr.setModelResolver(modelResolver);
// modulebr.setTwoPhaseBuilding(false);
// modulebr.setProcessPlugins(true); //I try to use these settings but it also not help
modulebr.setUserProperties(props);
Model modelEffectiveModel = modelBuilder.build(modelbr).getEffectiveModel();
List<Plugin> plugins = modelEffectiveModel.getBuild().getPlugins();
public static ModelResolver create(
ArtifactResolver resolver, RemoteRepositoryManager remoteRepositoryManager, MavenProject project)
throws EffectivePomBuildingException
try
ProjectBuildingRequest projectBuildingRequest = project.getProjectBuildingRequest();
Class c = Class.forName("org.apache.maven.repository.internal.DefaultModelResolver");
Constructor ct = c.getDeclaredConstructor(RepositorySystemSession.class
, RequestTrace.class, String.class
, ArtifactResolver.class, VersionRangeResolver.class, RemoteRepositoryManager.class
, List.class);
ct.setAccessible(true);
return (org.apache.maven.model.resolution.ModelResolver) ct.newInstance(
projectBuildingRequest.getRepositorySession()
, null, null, resolver, new DefaultVersionRangeResolver(), remoteRepositoryManager
, project.getRemoteProjectRepositories());
catch (Exception e)
throw new BuildingException("Error instantiating DefaultModelResolver for parsing", e);
请帮忙 为什么使用我没有得到的 getEffectiveModel() 方法：maven-clean-plugin、maven-install-plugin、maven-deploy-plugin、maven-site-plugin。 以及如何从有效的 pom 中获取所有插件？
【问题讨论】：
也许source code for the help plugin 有指向正确方向的线索。 是的，我已经尝试过查看插件代码但是如果我使用 maven-helper-plugin 中的逻辑并使用 Project Builder 构建有效的模型，它也无济于事 看起来你“只是”负责依赖关系的解析器部分......但不是用于启动插件的部分，这些插件成为有效模型的一部分......问题是进入我脑海的是：你为什么喜欢这样做？你想解决什么样的问题？ 【参考方案1】：目标是建立一个有效的模型并将所有用于组装的依赖项、插件（包括所有默认插件）及其传递对象（由 GAV）下载到文件夹中，以便在离线模式下组装项目，大致说话（这里是整个实现的一部分）。
使用模型构建器构建有效模型时，无法获取项目的默认插件（如 maven-install-plugin、maven-clean-plugin 等）。解决方案是使用 ProjectBuilder 通过以下设置更改模型的构造：
ProjectBuildingRequest projectBuildingRequest = new DefaultProjectBuildingRequest(
mavenSession.getProjectBuildingRequest());
projectBuildingRequest.setLocalRepository(mavenSession.getLocalRepository());
projectBuildingRequest.setProject(null);
projectBuildingRequest.setValidationLevel(ModelBuildingRequest.VALIDATION_LEVEL_MINIMAL);
projectBuildingRequest.setResolveDependencies(false);
projectBuildingRequest.setUserProperties(initAndGetProperties(rootProjectPom, mavenProject));
Model modelEffectiveModel = projectBuilder.build(pomModel.getModel().getPomFile(), request)
.getProject().getModel();
List<Plugin> plugins = model.getBuild().getPlugins();
之后就可以拿到项目的所有插件了，包括默认的插件
【讨论】：
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