如何让maven解决本地依赖的传递依赖

如何让maven解决本地依赖的传递依赖

本文介绍了如何让maven解决本地依赖的传递依赖的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我们有一个项目A,它取决于依赖图书馆C的项目B.A和B是本地项目,而C是maven中央库的公共图书馆。



pom.xml for A:

 < name> ProjA / name> 
...
<依赖关系>
< groupId> com.abc< / groupId>
< artifactId> ProjB< / artifactId>
< version> 1.0< / version>
< / dependency>

pom.xml for B:

 <名称> ProjB /名称> 
...
<依赖关系>
< groupId> org.apache.maven< / groupId>
< artifactId> C< / artifactId>
< version> 2.23.2< / version>
< / dependency>

运行 mvn依赖关系:tree -Dverbose 在A中,它不解决B的依赖性,并且B中使用的这些依赖关系也不在A的Maven Dependencies中显示。这是很好的编译,但是由于NoClassDefFound错误,在运行时会失败。

  [INFO]扫描项目... 
[INFO]
[INFO] -------------------------------------- ----------------------------------
[INFO] Building ProjA 1.0
[INFO ] ------------------------------------------------- -----------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree默认-cli)@ ProjA ---
[INFO] com.abc.projA:jar:1.0
[INFO] + - com.abc.projB:jar:1.0:compile
[信息] ------------------------------------------------ ------------------------
[INFO] BUILD SUCCESS
[INFO] ---------- -------------------------------------------------- ------------
[INFO]总时间:2.326 s
[INFO]完成于:2016-09-15T16:29:49-07:00
[INFO] Final Memory:13M / 309M
[INFO] --------------------------------- ---------------------------------------
有没有办法让maven解决问题我们认为这里的问题是B不存在于本地的回购中。$(

解决方案

c $ c> .m2



您需要为B运行 mvn install 将软件包安装到本地可以由A提取的 .m2 中。



然后运行 mvn依赖关系:树中的Dverbose 不会导致问题


We have a project A which depends on project B which depends on library C. A and B are local projects while C is a public library in maven central repo.

pom.xml for A:

<name>ProjA/name>
...
<dependency>
  <groupId>com.abc</groupId>
  <artifactId>ProjB</artifactId>
  <version>1.0</version>
</dependency>

pom.xml for B:

<name>ProjB/name>
...
<dependency>
    <groupId>org.apache.maven</groupId>
    <artifactId>C</artifactId>
    <version>2.23.2</version>
</dependency>

When run mvn dependency:tree -Dverbose in A, it does not resolve the dependencies of B and such dependencies used in B is not shown in A's Maven Dependencies as well. This is fine for compilation but will fail in runtime because of NoClassDefFound error.

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building ProjA 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ ProjA ---
[INFO] com.abc.projA:jar:1.0
[INFO] +- com.abc.projB:jar:1.0:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.326 s
[INFO] Finished at: 2016-09-15T16:29:49-07:00
[INFO] Final Memory: 13M/309M
[INFO] ------------------------------------------------------------------------

Is there any way to let maven resolve transitive dependency for such local dependency as B?

解决方案

I think the problem here is B does not exist in the local repo .m2

You need to run mvn install for B, to install the package into .m2 which can be picked up by A locally.

Then running mvn dependency:tree -Dverbose in A won't cause problem

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08-06 05:35