我正在尝试编写自己的自定义 Maven 插件它扩展了 AbstractDependencyMojo。
问题是，在我的插件的代码执行中，所有 AbstractDependencyMojo 组件均为 null。
@goal generate-dependencies
@phase install
@requiresProject false
参见下面的代码，重写方法execute()
public void execute() throws MojoExecutionException {
List<Dependency> dependencies = project.getModel().getDependencies();
for (Dependency dependency : dependencies) {
try {
Artifact a = factory.createArtifact(dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion(), dependency.getScope(), dependency.getType());
resolver.resolve(a, remoteRepos, getLocal());
}
catch (ArtifactResolutionException e) {
throw new MojoExecutionException("Implicit artifact resolution failed", e);
}
catch (ArtifactNotFoundException e) {
// Do nothing
}
}
调试时，项目为空，工厂为空，一切都是..空。
显然，由于某些原因，组件注入(inject)根本不起作用，我不明白为什么......
插件的调用方式如下:
<plugin>
<groupId>com.me.framework</groupId>
<artifactId>plugin-dependency-plugin</artifactId>
<version>0.0.1-SNAPSHOT</version>
<executions>
<execution>
<id>plugin-dependencies</id>
<phase>install</phase>
<goals>
<goal>generate-dependencies</goal>
</goals>
</execution>
</executions>
</plugin>
你有什么想法吗？谢谢
<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.me.framework</groupId>
<artifactId>plugin-dependency-plugin</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>maven-plugin</packaging>
<dependencies>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-model-builder</artifactId>
<version>3.0.4</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-project</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugin-tools</groupId>
<artifactId>maven-plugin-annotations</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<type>maven-plugin</type>
<version>2.5.1</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<versionRange>[3.2,)</versionRange>
<goals>
<goal>descriptor</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
调用插件pom
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>TheArtifact</artifactId>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<executions>
<execution>
<id>clean-generated-sources</id>
<phase>clean</phase>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<!-- Package project as artifact (for apidoc) -->
<execution>
<id>package-project</id>
<phase>prepare-package</phase>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.me.framework</groupId>
<artifactId>plugin-dependency-plugin</artifactId>
<version>0.0.1-SNAPSHOT</version>
<executions>
<execution>
<id>plugin-dependencies</id>
<phase>install</phase>
<goals>
<goal>generate-dependencies</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- Install project resources as artifact (for apidoc) -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<executions>
<execution>
<id>install-project</id>
<phase>prepare-package</phase>
</execution>
</executions>
</plugin>
</plugins>
</build>
最佳答案
首先，基于文档的标记已经过时，最好使用 @Mojo 注释来提供所有插件详细信息:
@Mojo(
name = "generate-dependencies",
defaultPhase = LifecyclePhase.INSTALL,
requiresDependencyResolution = ResolutionScope.COMPILE
// ...
)
其次，我会检查 @requiresProject 是否设置为 false 并尝试设置为 true，这也可能是原因。
关于java - maven插件组件注入(inject)null，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37919180/