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我在过去的3天里阅读了很多教程，但没有成功。Maven多模块项目导入模块
我有一个maven多模块项目。在父pom中，我定义了我的子模块：
...
<groupId>test</groupId>
<artifactId>parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>parent</name>
<packaging>pom</packaging>
<modules>
<module>common</module>
<module>backend</module>
</modules>
通用模块保存公用数据。基本上它提供了谷歌protobuf类，将用于我的后端（以及后来客户端）项目。 所以，我的protobufs正在生成，现在我想在我的后端项目中使用它们。
共同的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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>test</groupId>
<artifactId>parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>common</artifactId>
<name>common</name>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java</artifactId>
<version>2.6.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.xolstice.maven.plugins</groupId>
<artifactId>protobuf-maven-plugin</artifactId>
<version>0.5.0</version>
<configuration>
<protocExecutable>protoc</protocExecutable>
</configuration>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
pom.xml的后端：相关内容部分我定义了常见的项目包括在内。
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>test</groupId>
<artifactId>parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>backend</artifactId>
<name>backend</name>
<packaging>jar</packaging>
<properties>
<jersey.version>2.22.2</jersey.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>test</groupId>
<artifactId>common</artifactId>
<version>${project.parent.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
<version>${jersey.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-grizzly2-http</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.9</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<mainClass>backend.Main</mainClass>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<finalName>jersey-service-${project.version}</finalName>
<archive>
<manifest> <mainClass>de.unidue.inf.is.websail.wsbackend.Main</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals><goal>copy-dependencies</goal></goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
现在，我在父项目上使用mvn install来生成并将jar复制到本地存储库。 （我也试着首先在公共项目上调用该命令）。一切都生成良好，但我不能在后端模块中使用我的protobufs和其他类..
后端模块的依赖关系树甚至不显示我的“test.common”依赖项。这就是为什么我不能包括课程。它非常令人沮丧！我尝试了很多，例如，要使用maven编译器插件在我的共同POM：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals><goal>copy-dependencies</goal></goals>
</execution>
</executions>
</plugin>
但它剧照不起作用。我错过了什么吗？当查看我的本地存储库时，我可以看到“test.common”jar，但后端模块不会导入它。希望您能够帮助我。
* UPDATE *
移动共同依赖关系的依赖部分：
<dependencies>
...
<dependency>
<groupId>test</groupId>
<artifactId>common</artifactId>
<version>${project.parent.version}</version>
<scope>compile</scope>
</dependency>
</dependencies>
问候 扬K.