Maven - 复制项目的所有依赖项和传递依赖项

Question

我是 Maven 新手。 （我已经搜索了几个小时的答案，但没有运气。mvn dependency:copy-dependencies 不能解决我的问题） 我需要复制项目的所有依赖项（以 jar 的形式），如果我的一个 jar 依赖于另一个工件，则也复制该工件。

示例项目1 pom.xml：

<?xml version="1.0"?>
<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>

    <groupId>project1</groupId>
    <artifactId> project1.utils</artifactId>
    <version>1.0</version>
    <name> project1. utils </name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>project2</groupId>
            <artifactId>project2.artifact</artifactId>
            <version>2.0</version>
        </dependency>
    </dependencies>

<build>
<plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <archive>
                        <index>true</index>
                        <manifestEntries>
                            <Build-Number>${buildNumber}</Build-Number>
                            <Revision>${Revision}</Revision>
                        </manifestEntries>
                    </archive>
                </configuration>
            </plugin>
</plugins>

</build>
</project>

“project1”具有 project2.artifact.jar 的依赖项。当我使用“mvn dependency:copy-dependencies”时，我得到 project2.artifact.jar 但我没有得到 project3.artifact.jar 这是“project2”的依赖项。

我没有project2的pom，但它安装在我的本地仓库中。

如何获取项目 1 的所有依赖项，包括第二个 jar（“project3.artifact.jar”）？

project2 的 Pom 看起来像这样，但我去客户那里时没有它。所以我使用“mvn install”手动安装project2.artifact.jar、project3.artifact.jar。

Project2 pom.xml：

<?xml version="1.0"?>
<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>

    <groupId>project2</groupId>
    <artifactId>project2.artifact</artifactId>
    <version>2.0</version>
    <name>project2.artifact</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>project3</groupId>
            <artifactId>project3.artifact</artifactId>
            <version>3.0</version>
        </dependency>
    </dependencies>

<build>
<plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <archive>
                        <index>true</index>
                        <manifestEntries>
                            <Build-Number>${buildNumber}</Build-Number>
                            <Revision>${Revision}</Revision>
                        </manifestEntries>
                    </archive>
                </configuration>
            </plugin>
</plugins>

</build>
</project>

Answer 1

请使用最新版本的依赖插件：

mvn org.apache.maven.plugins:maven-dependency-plugin:2.10:copy-dependencies

如果不行，请检查：

mvn org.apache.maven.plugins:maven-dependency-plugin:2.10:tree
mvn org.apache.maven.plugins:maven-dependency-plugin:2.10:list

copy-dependency 目标复制由tree 和list 目标解析和显示的相同工件。

为了测试我准备了project3 pom.xml：

<?xml version="1.0"?>
<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>

    <groupId>project3</groupId>
    <artifactId>project3.artifact</artifactId>
    <version>3.0</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
</project>

我有这样的目录结构：

pr1
   pom.xml - from question

pr2
   pom.xml - from question

pr3
   pom.xml - as shown above

现在我做：

cd pr3
mvn clean innstall

cd ../pr2
mvn clean innstall
mvn dependency:tree

dependency:tree 输出：

[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ project2.artifact ---
[INFO] project2:project2.artifact:jar:2.0
[INFO] \- project3:project3.artifact:jar:3.0:compile

所以 project2 依赖于 project3 下一个：

cd ../pr1
mvn clean install
mvn dependency:tree

dependency:tree 在 project1 输出中：

[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ project1.utils ---
[INFO] project1:project1.utils:jar:1.0
[INFO] \- project2:project2.artifact:jar:2.0:compile
[INFO]    \- project3:project3.artifact:jar:3.0:compile

这样也行。

现在复制：

mvn dependency:copy-dependencies

结果：

[INFO] --- maven-dependency-plugin:2.8:copy-dependencies (default-cli) @ project1.utils ---
[INFO] Copying project3.artifact-3.0.jar to ...\pr1\target\dependency\project3.artifact-3.0.jar
[INFO] Copying project2.artifact-2.0.jar to ...\pr1\target\dependency\project2.artifact-2.0.jar

如果您还想复制 project1 工件，请将其添加到 project1 pom.xml 中的依赖项

...
<dependencies>
    <dependency>
        <groupId>project2</groupId>
        <artifactId>project2.artifact</artifactId>
        <version>2.0</version>
    </dependency>
    <dependency>
        <groupId>project1</groupId>
        <artifactId>project1.utils</artifactId>
        <version>1.0</version>
    </dependency>
</dependencies>
...

现在：

mvn clean dependency:copy-dependencies 我们有：

[INFO] --- maven-dependency-plugin:2.8:copy-dependencies (default-cli) @ project1.utils ---
[INFO] Copying project3.artifact-3.0.jar to ...\pr1\target\dependency\project3.artifact-3.0.jar
[INFO] Copying project2.artifact-2.0.jar to ...\pr1\target\dependency\project2.artifact-2.0.jar
[INFO] Copying project1.utils-1.0.jar to ...\pr1\target\dependency\project1.utils-1.0.jar