Maven：来自其他模块的不可解析的导入 POM

Question

类似于Maven: Non-resolvable parent POM，但不一样。

我有一个父 pom

<groupId>group</groupId>
<artifactId>parent</artifactId>
<version>SNAPSHOT</version>
<packaging>pom</packaging>

<modules>
    <module>module1</module>
    <module>module2</module>
    <module>module3</module>
</modules>

module1 使用dependencyManagement 定义了一些dependencies

子 pom：module3/pom.xml 正在尝试导入 module1

<parent>
    <artifactId>group</artifactId>
    <groupId>parent</groupId>
    <version>SNAPSHOT</version>
    <relativePath>../</relativePath>
</parent>

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>group</groupId>
      <artifactId>module1</artifactId>
      <version>SNAPSHOT</version>
      <scope>import</scope>
      <type>pom</type>
      <!--
      <systemPath>../module1</systemPath>
      -->
    </dependency>
  </dependencies>
</dependencyManagement>

如果我尝试构建父级，就可以了

mvn validate
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:

... ...

[INFO] parent ............................................ SUCCESS [0.128s]
[INFO] module1 ........................................... SUCCESS [0.011s]
[INFO] module2 ........................................... SUCCESS [0.009s]
[INFO] module3 ........................................... SUCCESS [0.009s]
... ...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS

但如果我在子模块中运行构建，它会失败

mvn validate
[INFO] Scanning for projects...
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project group:module3:SNAPSHOT (/path-tp/project/module3/pom.xml) has 5 errors
[ERROR]     Non-resolvable import POM: Failure to find group:module1:pom:SNAPSHOT in https://repo1.maven.org/maven2/ was cached in the local repository, resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced @ line 22, column 19 -> [Help 2]
... ...
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException

我尝试过的

• 我会尝试使用systemPath，但import 范围不支持它。
• 我会尝试将 import 范围 dependencies 声明从 module3 移动到父模块，但它未能抱怨循环依赖

如何构建/加载单独的子模块module3，或者有没有其他方法可以将大量的dependencyManagements 拆分为多个子模块？

Answer 1

在父级工作时，Maven 能够解决模块之间的依赖关系。

但如果你在模块 3 中工作，它不知道模块 1 是项目的同级模块。

如果你想直接在模块 3 中工作，你需要先安装模块 1。