我想在我的父 pom 的 pluginManagement 中为插件定义不同的执行,然后将特定的执行绑定到子 pom 中的阶段。我看到不一致的行为取决于使用的插件和 pluginManagement 部分的位置。
在第一个示例中,pluginManagement 位于父 pom 中,为编译器插件定义了 2 个执行,为 antrun 插件定义了 2 个执行。
<?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/xsd/maven-4.0.0.xsd">
<name>master-pom</name>
<modelVersion>4.0.0</modelVersion>
<groupId>plugin.test</groupId>
<artifactId>master-pom</artifactId>
<packaging>pom</packaging>
<version>1.0.0-SNAPSHOT</version>
<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<id>execution-1</id>
<phase>none</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.6</source>
<target>1.6</target>
<includes>
<include>**/*</include>
</includes>
</configuration>
</execution>
<execution>
<id>execution-2</id>
<phase>none</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.5</source>
<target>1.5</target>
<includes>
<include>**/*</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>execution-1</id>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>
<echo message="execution 1"/>
</target>
</configuration>
</execution>
<execution>
<id>execution-2</id>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>
<echo message="execution 1"/>
</target>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
还有孩子 pom:
<?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/xsd/maven-4.0.0.xsd">
<name>build</name>
<modelVersion>4.0.0</modelVersion>
<groupId>plugin.test</groupId>
<artifactId>build</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>pom</packaging>
<parent>
<groupId>plugin.test</groupId>
<artifactId>master-pom</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>./master-pom.xml</relativePath>
</parent>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<id>execution-1</id>
<phase>generate-sources</phase>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>execution-1</id>
<phase>generate-sources</phase>
</execution>
</executions>
</plugin>
</plugins>
</build>
在子 pom 上运行 'mvn clean install' 将同时运行编译器插件的执行和 antrun 插件的第一次执行,尽管每个的第一次执行都绑定到一个阶段。
现在将 pluginManagement 移动到子 pom:
<?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/xsd/maven-4.0.0.xsd">
<name>build</name>
<modelVersion>4.0.0</modelVersion>
<groupId>plugin.test</groupId>
<artifactId>build</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>pom</packaging>
<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<id>execution-1</id>
<phase>none</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.6</source>
<target>1.6</target>
<includes>
<include>**/*</include>
</includes>
</configuration>
</execution>
<execution>
<id>execution-2</id>
<phase>none</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.5</source>
<target>1.5</target>
<includes>
<include>**/*</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>execution-1</id>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>
<echo message="execution 1"/>
</target>
</configuration>
</execution>
<execution>
<id>execution-2</id>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>
<echo message="execution 2"/>
</target>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<id>execution-1</id>
<phase>generate-sources</phase>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>execution-1</id>
<phase>generate-sources</phase>
</execution>
</executions>
</plugin>
</plugins>
</build>
这个 pom 给出了所需的行为,它只为每个插件运行第一次执行。编译器插件(和大多数其他插件)仅在 pluginManagement 位于同一个 pom 中并且每次执行都绑定到 phase=none 的情况下才能正常工作(可能是因为它将执行绑定到默认阶段)。antrun 插件在任何情况下都能正常工作。
如何在父 pom 中有 pluginManagement 部分且无需将不需要的执行专门绑定到子 pom 中的 phase=none 时实现这一点?这是 Maven 中的错误还是这种行为在某种程度上是合理的?我已经在 Maven 3.0.4 和 Maven 2.2.1 上尝试过,结果相同。