如何解决 Maven 依赖项“无法在项目上执行目标”的问题

Question

我在我的 maven 项目的 Eclipse 中有以下结构：

MainMavenProject
---MyProject
---MProject-client
---MProject-xyz
---MProject-web
...

在 Eclipse 中，我使用 JBoss 7.1 来运行 MProject-web：

现在，我想在另一个项目中运行 Jetty。从目录 /MainMavenProject/MyProject 我运行一个命令

mvn -Djetty:port=8081 jetty:run

它已经完成了一个错误：

[ERROR] Failed to execute goal on project MyProject: Could not resolve dependencies for project ***.*****.MyProject:MyProject:war:0.0.1-SNAPSHOT: The following artifacts could not be resolved: ***.*****.********:MyProject-client:jar:1.0.
1-SNAPSHOT, com.*****.********:MProject-xyz:jar:1.0.1-SNAPSHOT: Failure to find ***.*****.********:MyProject-client:jar:1.0.1-SNAPSHOT in https://*********.*****.com/nexus/content/groups/development was cached in the local repository, resolutio
n will not be reattempted until the update interval of *****-central has elapsed or updates are forced -> [Help 1]
[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/DependencyResolutionException

在 MyProject 中，我使用其他依赖项：

<dependency>
    <groupId>com.*****.********</groupId>
    <artifactId>MyProject-client/artifactId>
    <version>1.0.1-SNAPSHOT</version>
</dependency>

<dependency>
    <groupId>com.*****.********</groupId>
    <artifactId>MProject-xyz</artifactId>
    <version>1.0.1-SNAPSHOT</version>
</dependency>

我如何检查，究竟发生了什么，之后如何解决？

提前谢谢你

Answer 1

先尝试在主项目上运行mvn install。

您的项目缺少其他模块，这些模块可能从未安装到本地存储库。

并不是每次运行jetty:run之前都必须运行安装。

另一种方法是使用 eclipse，右键单击 MyProject -> Run as -> Maven build...，在目标字段中输入 -Djetty:port=8081 jetty:run 并选中“Resolve workspace artifacts”。