[英]Maven dependency plugin does not resolve manually specified dependencies for a plugin
我遇到了maven-dependency-plugin
(Maven版本3.2.3
, maven-dependency-plugin
版本2.10
)。 我試圖介紹插件依賴項。 我創建了一個簡單的項目:
<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.sze</groupId>
<artifactId>mvn-project</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.2</version>
</plugin>
</plugins>
</build>
</project>
我選擇了maven-antrun-plugin 1.2版,導致這個插件及其依賴項在Maven官方指南配置插件中提到。 然后我運行一個命令來解決它的依賴關系:
mvn dependency:resolve-plugins
輸出:
[INFO] Plugin Resolved: maven-antrun-plugin-1.2.jar
[INFO] Plugin Dependency Resolved: maven-plugin-api-2.0.1.jar
[INFO] Plugin Dependency Resolved: maven-project-2.0.1.jar
[INFO] Plugin Dependency Resolved: ant-launcher-1.6.5.jar
[INFO] Plugin Dependency Resolved: ant-1.6.5.jar
確實,我有ant
和ant-launcher
版本1.6.5
。 現在我想更改這些依賴項的版本並更改我的pom.xml
:
<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.sze</groupId>
<artifactId>mvn-project</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.2</version>
<dependencies>
<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant</artifactId>
<version>1.7.1</version>
</dependency>
<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant-launcher</artifactId>
<version>1.7.1</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
但是當我再次運行mvn dependency:resolve-plugins
,屬於maven-antrun-plugin
的依賴項的版本仍然是1.6.5
:
[INFO] Plugin Resolved: maven-antrun-plugin-1.2.jar
[INFO] Plugin Dependency Resolved: maven-plugin-api-2.0.1.jar
[INFO] Plugin Dependency Resolved: maven-project-2.0.1.jar
[INFO] Plugin Dependency Resolved: ant-launcher-1.6.5.jar
[INFO] Plugin Dependency Resolved: ant-1.6.5.jar
我怎樣才能檢查這些依賴項的版本是否已更改?
出於某種原因, resolve-plugins
目標不會解析自定義插件依賴項。 如果要查看實際使用的插件,則必須在調試模式下運行Maven:
mvn -X antrun:run
這將顯示添加到類路徑的依賴項:
[DEBUG] org.apache.maven.plugins:maven-antrun-plugin:jar:1.2:
[DEBUG] org.apache.ant:ant:jar:1.7.1:runtime
[DEBUG] org.apache.ant:ant-launcher:jar:1.7.1:runtime
[DEBUG] org.apache.maven:maven-plugin-api:jar:2.0.1:compile
[DEBUG] org.apache.maven:maven-project:jar:2.0.1:compile
[DEBUG] org.apache.maven:maven-profile:jar:2.0.1:compile
[DEBUG] org.apache.maven:maven-model:jar:2.0.1:compile
[DEBUG] org.apache.maven:maven-artifact-manager:jar:2.0.1:compile
[DEBUG] org.apache.maven:maven-repository-metadata:jar:2.0.1:compile
[DEBUG] org.codehaus.plexus:plexus-utils:jar:1.0.5:compile
[DEBUG] classworlds:classworlds:jar:1.1-alpha-2:compile
[DEBUG] org.apache.maven:maven-artifact:jar:2.0.1:compile
[DEBUG] org.codehaus.plexus:plexus-container-default:jar:1.0-alpha-9:compile
[DEBUG] junit:junit:jar:3.8.1:compile
[DEBUG] ant:ant-launcher:jar:1.6.5:runtime
[DEBUG] ant:ant:jar:1.6.5:compile
請注意,原始依賴項的組ID 不是 org.apache.ant
而只是ant
。 這將導致Maven同時包含ant:ant:1.6.5
和org.apache.ant:ant:1.7.1
。 但是,自定義依賴項將首先出現在類路徑中,因此您將能夠使用較新的ant版本。
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