“Dependencies.Dependency.version”缺少错误，但版本在父级中管理

Question

父POM：

  <groupId>com.sw.system4</groupId>
  <artifactId>system4-parent</artifactId>
  <version>${system4.version}</version>
  <packaging>pom</packaging>
  <name>System 4 Parent Project</name>
  <modules>
    <module>system4-data</module>
     ...others...
  </modules>
  <properties>
    <system4.version>0.0.1-SNAPSHOT</system4.version>
    <spring.version>3.2.3.RELEASE</spring.version>
    ... others...
  </properties>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
        <scope>runtime</scope>
      </dependency>
    ... lots of others ...
    </dependencies>
  </dependencyManagement>

子POM：

  <parent>
    <groupId>com.sw.system4</groupId>
    <artifactId>system4-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>system4-data</artifactId>
  <dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <scope>runtime</scope>
    </dependency>
    ... lots of others...
  </dependencies>

当我构建时，我得到以下输出：

[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project com.sw.system4:system4-data:0.0.1-SNAPSHOT (C:\work\eclips
e_workspaces\systemiv\system4-parent\system4-data\pom.xml) has 8 errors

[ERROR]     'dependencies.dependency.version' for org.springframework:spring-cor
e:jar is missing. @ line 16, column 16

... others omitted for clarity ...

Answer 1

我想你可以试试：

>

将版本的文字值放入子pom中

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-core</artifactId>
  <version>3.2.3.RELEASE</version>
  <scope>runtime</scope>
</dependency>

清除通常位于C:\users\user.m2\repository的.m2缓存。我会说我在Maven工作时经常这样做。特别是在提交之前,这样我就可以更有信心地运行配置项。您不必每次都使用nuke文件夹，有时只需要您的项目包和.cache文件夹就足够了。

<parent>
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <version>1</version>
 <relativePath>../parent/pom.xml</relativePath>
</parent>