如何让maven解决本地依赖的传递依赖 [英] How to let maven resolve transitive dependency for local dependency

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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