Artifact has not been packaged yet. When used on reactor artifact, unpack should be executed after p
2016-11-21 14:08
477 查看
最初在titan的源码里看到这个错误的。搜了一下这个错是eclipse的插件m2e的问题。不是真正的错误。
这是验证代码。这个验证代码可以让你更加了解多模块工程时maven会智能的决定最先构建哪个模块。每个模块都有自己的构建周期，xml没有写错。
可以用一个<pluginManagement>把插件包住，这样eclipse里就不报错了。但是<pluginManagement>的使用场景是父项目里定义，然后子项目里继承使用。 这里加一个<pluginManagement>只是为了看不到这个错误感觉有点名不正言不顺。 最好的办法就是忽略，不去管他。我试过了，jdk1.7+eclipse mars版本，或者 jdk1.8+eclipse neon.1版本都是会报这个错的。maven的版本都是3.3.9。
下面验证一下这个错误不影响使用。
1.新建一个maven项目叫parentProj.
2.建子模块mod-all,mod-parent,mod-test。其中mod-all包含子模块 mod1,mod2。 mod-parent包含子模块mod-3。（titan的源码里就是个样子的）
3.在mod-parent的pom.xml里加入
然后在mod3里加入
此时在<execution>处就会报
Artifact has not been packaged yet. When used on reactor artifact, unpack should be executed after packaging: see MDEP-98.
4.加入测试代码
mod1里有一个类叫ModA。里面有一个方法printA
mod2里有一个类叫ModB。里面有一个方法printB
printA里调用了ModB的printB方法
mod-test里有一个以Test开头的类。 类里有一个方法调用ModA的printA方法
mod-all
|-- mod1
|-- ModA
|-- mod2
|-- ModB
mod-parent
|--mod3
mod-test
|-- TestModA
5.测试
cd /d D:\WorkSpace3\parentProj
mvn clean install
输出如下：
Microsoft Windows [版本 6.1.7601]
版权所有 (c) 2009 Microsoft Corporation。保留所有权利。
C:\Users\Administrator>cd /d D:\WorkSpace3\parentProj
D:\WorkSpace3\parentProj>mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] parentProj
[INFO] mod2
[INFO] mod1
[INFO] mod-test
[INFO] mod-all
[INFO] mod-parent
[INFO] mod3
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building parentProj 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ parentProj ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ parentProj ---
[INFO] Installing D:\WorkSpace3\parentProj\pom.xml to E:\repo\com\lx\parentProj\0.0.1-SNAPSHOT\parentProj-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod2 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod2 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod2\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\test-classes
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod2 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod2\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.056 sec - in mod2.Mod2Test
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-jar-plugin:2.4:test-jar (pack-test-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod2 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod2\pom.xml to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.pom
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod1 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod1 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod1\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod1\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod1 ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod1 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod1 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod1\pom.xml to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-test 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-test ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-test\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-test\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-test ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-test ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-test ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\pom.xml to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-all 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-all ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-all\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-all ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-all ---
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-all ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\pom.xml to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-parent 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-parent ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-parent ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\pom.xml to E:\repo\com\lx\mod-parent\0.0.1-SNAPSHOT\mod-parent-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod3 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod3 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-parent\mod3\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:build-classpath (generate-cached-classpath) @ mod3 ---
[INFO] Wrote classpath file 'D:\WorkSpace3\parentProj\mod-parent\mod3\target\cached_classpath.txt'.
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:unpack (unpack-common-test-classes) @ mod3 ---
[INFO] Configured Artifact: com.lx:mod2:tests:0.0.1-SNAPSHOT:jar
[INFO] Unpacking D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes with includes "" and excludes ""
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod3 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod-parent\mod3\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.078 sec - in mod2.Mod2Test
Running org.mod3.Mod3Test
mod3 测试..................
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.003 sec - in org.mod3.Mod3Test
Results :
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod3 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod3 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\pom.xml to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] parentProj ......................................... SUCCESS [ 0.595 s]
[INFO] mod2 ............................................... SUCCESS [ 2.787 s]
[INFO] mod1 ............................................... SUCCESS [ 0.332 s]
[INFO] mod-test ........................................... SUCCESS [ 0.303 s]
[INFO] mod-all ............................................ SUCCESS [ 0.287 s]
[INFO] mod-parent ......................................... SUCCESS [ 0.069 s]
[INFO] mod3 ............................................... SUCCESS [ 1.840 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.730 s
[INFO] Finished at: 2016-10-27T14:32:15+08:00
[INFO] Final Memory: 21M/219M
[INFO] ------------------------------------------------------------------------
以上结果可以看出
①可以看到maven会先分析项目依赖，然后调整编译的顺序，因为mod-test调用了printA， 而printA调用了printB。所以最小构建的是mod2子模块，然后再是mod1子模块。再接着是mod-test...
②maven的phase会在每个子模块里先走完。比如最先构建的是mod2。先在mod2里完整的走一遍maven的几个阶段，走到test阶段的时候会先执行mod2里的测试程序。走到package阶段就会打jar包。上面忘了说了，在mod2的src/main/test里有一个测试的类。有一个方法上加了@Test。
③正因为有了②，所以在build mod2的时候就已经打包好了mod2-0.0.1-SNAPSHOT-tests.jar，所以咱们的 mod3里在构建的时候要解压mod2-0.0.1-SNAPSHOT-tests.jar这个jar包是没问题的。因为人家的确存在呀。 所以这里报jar包不存在只能说是插件有点小瑕疵。不用管他了。
maven在构建的时候有很多阶段。比如下面在mod2中将打包的插件绑定到process-test-classes 阶段也是可以的。因为mod2在mod3之前构建，所以绑定到package或绑定到
process-test-classes 阶段都行。
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
===========================***==================================
下面是mod2中将插件绑定到 process-test-classes 阶段的构建结果，效果是一样的：
===========================***==================================
D:\WorkSpace3\parentProj>mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] parentProj
[INFO] mod2
[INFO] mod1
[INFO] mod-test
[INFO] mod-all
[INFO] mod-parent
[INFO] mod3
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building parentProj 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ parentProj ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ parentProj ---
[INFO] Installing D:\WorkSpace3\parentProj\pom.xml to E:\repo\com\lx\parentProj\0.0.1-SNAPSHOT\parentProj-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod2 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod2 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod2\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\test-classes
[INFO]
[INFO] --- maven-jar-plugin:2.4:test-jar (pack-test-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod2 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod2\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.065 sec - in mod2.Mod2Test
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod2 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod2\pom.xml to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.pom
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod1 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod1 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod1\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod1\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod1 ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod1 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod1 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod1\pom.xml to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-test 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-test ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-test\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-test\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-test ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-test ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-test ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\pom.xml to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-all 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-all ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-all\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-all ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-all ---
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-all ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\pom.xml to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-parent 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-parent ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-parent ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\pom.xml to E:\repo\com\lx\mod-parent\0.0.1-SNAPSHOT\mod-parent-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod3 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod3 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-parent\mod3\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:build-classpath (generate-cached-classpath) @ mod3 ---
[INFO] Wrote classpath file 'D:\WorkSpace3\parentProj\mod-parent\mod3\target\cached_classpath.txt'.
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:unpack (unpack-common-test-classes) @ mod3 ---
[INFO] Configured Artifact: com.lx:mod2:tests:0.0.1-SNAPSHOT:jar
[INFO] Unpacking D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes with includes "" and excludes ""
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod3 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod-parent\mod3\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.074 sec - in mod2.Mod2Test
Running org.mod3.Mod3Test
mod3 测试..................
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.004 sec - in org.mod3.Mod3Test
Results :
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod3 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod3 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\pom.xml to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] parentProj ......................................... SUCCESS [ 0.444 s]
[INFO] mod2 ............................................... SUCCESS [ 2.601 s]
[INFO] mod1 ............................................... SUCCESS [ 0.285 s]
[INFO] mod-test ........................................... SUCCESS [ 0.272 s]
[INFO] mod-all ............................................ SUCCESS [ 0.204 s]
[INFO] mod-parent ......................................... SUCCESS [ 0.055 s]
[INFO] mod3 ............................................... SUCCESS [ 1.846 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.959 s
[INFO] Finished at: 2016-10-27T14:13:42+08:00
[INFO] Final Memory: 22M/213M
[INFO] ------------------------------------------------------------------------
这是验证代码。这个验证代码可以让你更加了解多模块工程时maven会智能的决定最先构建哪个模块。每个模块都有自己的构建周期，xml没有写错。
可以用一个<pluginManagement>把插件包住，这样eclipse里就不报错了。但是<pluginManagement>的使用场景是父项目里定义，然后子项目里继承使用。 这里加一个<pluginManagement>只是为了看不到这个错误感觉有点名不正言不顺。 最好的办法就是忽略，不去管他。我试过了，jdk1.7+eclipse mars版本，或者 jdk1.8+eclipse neon.1版本都是会报这个错的。maven的版本都是3.3.9。
下面验证一下这个错误不影响使用。
1.新建一个maven项目叫parentProj.
2.建子模块mod-all,mod-parent,mod-test。其中mod-all包含子模块 mod1,mod2。 mod-parent包含子模块mod-3。（titan的源码里就是个样子的）
3.在mod-parent的pom.xml里加入
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>generate-cached-classpath</id>
<phase>generate-test-resources</phase>
<goals>
<goal>build-classpath</goal>
</goals>
<configuration>
<outputFile>${project.basedir}/target/cached_classpath.txt</outputFile>
</configuration>
</execution>
<execution>
<id>unpack-common-test-classes</id>
<phase>process-test-classes</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>${project.groupId}</groupId>
<artifactId>mod2</artifactId>
<version>${project.version}</version>
<classifier>tests</classifier>
<outputDirectory>${project.build.directory}/test-classes</outputDirectory>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<versionRange>[2.2.1,)</versionRange>
<goals>
<goal>build-classpath</goal>
<goal>unpack</goal>
</goals>
</pluginExecutionFilter>
<action>
<execute />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>然后在mod3里加入
<plugin> <artifactId>maven-dependency-plugin</artifactId> <executions> <execution> <id>generate-cached-classpath</id> </execution> <!-- 为什么此处可以解压mod2-tests.jar? 因为maven构建一开始的时候就已经reorder了。可以看到mod2是最先执行的，构建完mod2之后才开始构建mod3的 --> <execution> <id>unpack-common-test-classes</id> </execution> </executions> </plugin>
此时在<execution>处就会报
Artifact has not been packaged yet. When used on reactor artifact, unpack should be executed after packaging: see MDEP-98.
4.加入测试代码
mod1里有一个类叫ModA。里面有一个方法printA
mod2里有一个类叫ModB。里面有一个方法printB
printA里调用了ModB的printB方法
mod-test里有一个以Test开头的类。 类里有一个方法调用ModA的printA方法
mod-all
|-- mod1
|-- ModA
|-- mod2
|-- ModB
mod-parent
|--mod3
mod-test
|-- TestModA
5.测试
cd /d D:\WorkSpace3\parentProj
mvn clean install
输出如下：
Microsoft Windows [版本 6.1.7601]
版权所有 (c) 2009 Microsoft Corporation。保留所有权利。
C:\Users\Administrator>cd /d D:\WorkSpace3\parentProj
D:\WorkSpace3\parentProj>mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] parentProj
[INFO] mod2
[INFO] mod1
[INFO] mod-test
[INFO] mod-all
[INFO] mod-parent
[INFO] mod3
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building parentProj 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ parentProj ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ parentProj ---
[INFO] Installing D:\WorkSpace3\parentProj\pom.xml to E:\repo\com\lx\parentProj\0.0.1-SNAPSHOT\parentProj-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod2 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod2 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod2\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\test-classes
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod2 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod2\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.056 sec - in mod2.Mod2Test
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-jar-plugin:2.4:test-jar (pack-test-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod2 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod2\pom.xml to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.pom
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod1 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod1 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod1\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod1\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod1 ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod1 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod1 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod1\pom.xml to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-test 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-test ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-test\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-test\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-test ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-test ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-test ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\pom.xml to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-all 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-all ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-all\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-all ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-all ---
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-all ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\pom.xml to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-parent 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-parent ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-parent ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\pom.xml to E:\repo\com\lx\mod-parent\0.0.1-SNAPSHOT\mod-parent-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod3 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod3 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-parent\mod3\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:build-classpath (generate-cached-classpath) @ mod3 ---
[INFO] Wrote classpath file 'D:\WorkSpace3\parentProj\mod-parent\mod3\target\cached_classpath.txt'.
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:unpack (unpack-common-test-classes) @ mod3 ---
[INFO] Configured Artifact: com.lx:mod2:tests:0.0.1-SNAPSHOT:jar
[INFO] Unpacking D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes with includes "" and excludes ""
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod3 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod-parent\mod3\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.078 sec - in mod2.Mod2Test
Running org.mod3.Mod3Test
mod3 测试..................
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.003 sec - in org.mod3.Mod3Test
Results :
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod3 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod3 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\pom.xml to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] parentProj ......................................... SUCCESS [ 0.595 s]
[INFO] mod2 ............................................... SUCCESS [ 2.787 s]
[INFO] mod1 ............................................... SUCCESS [ 0.332 s]
[INFO] mod-test ........................................... SUCCESS [ 0.303 s]
[INFO] mod-all ............................................ SUCCESS [ 0.287 s]
[INFO] mod-parent ......................................... SUCCESS [ 0.069 s]
[INFO] mod3 ............................................... SUCCESS [ 1.840 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.730 s
[INFO] Finished at: 2016-10-27T14:32:15+08:00
[INFO] Final Memory: 21M/219M
[INFO] ------------------------------------------------------------------------
以上结果可以看出
①可以看到maven会先分析项目依赖，然后调整编译的顺序，因为mod-test调用了printA， 而printA调用了printB。所以最小构建的是mod2子模块，然后再是mod1子模块。再接着是mod-test...
②maven的phase会在每个子模块里先走完。比如最先构建的是mod2。先在mod2里完整的走一遍maven的几个阶段，走到test阶段的时候会先执行mod2里的测试程序。走到package阶段就会打jar包。上面忘了说了，在mod2的src/main/test里有一个测试的类。有一个方法上加了@Test。
③正因为有了②，所以在build mod2的时候就已经打包好了mod2-0.0.1-SNAPSHOT-tests.jar，所以咱们的 mod3里在构建的时候要解压mod2-0.0.1-SNAPSHOT-tests.jar这个jar包是没问题的。因为人家的确存在呀。 所以这里报jar包不存在只能说是插件有点小瑕疵。不用管他了。
maven在构建的时候有很多阶段。比如下面在mod2中将打包的插件绑定到process-test-classes 阶段也是可以的。因为mod2在mod3之前构建，所以绑定到package或绑定到
process-test-classes 阶段都行。
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
===========================***==================================
下面是mod2中将插件绑定到 process-test-classes 阶段的构建结果，效果是一样的：
===========================***==================================
D:\WorkSpace3\parentProj>mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] parentProj
[INFO] mod2
[INFO] mod1
[INFO] mod-test
[INFO] mod-all
[INFO] mod-parent
[INFO] mod3
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building parentProj 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ parentProj ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ parentProj ---
[INFO] Installing D:\WorkSpace3\parentProj\pom.xml to E:\repo\com\lx\parentProj\0.0.1-SNAPSHOT\parentProj-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod2 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod2 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod2\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod2 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod2 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod2\target\test-classes
[INFO]
[INFO] --- maven-jar-plugin:2.4:test-jar (pack-test-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod2 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod2\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.065 sec - in mod2.Mod2Test
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod2 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod2 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod2\pom.xml to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT.pom
[INFO] Installing D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to E:\repo\com\lx\mod2\0.0.1-SNAPSHOT\mod2-0.0.1-SNAPSHOT-tests.jar
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod1 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod1 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod1\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod1\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod1 ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod1 ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod1 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod1 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod1\target\mod1-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod1\pom.xml to E:\repo\com\lx\mod1\0.0.1-SNAPSHOT\mod1-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-test 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-test ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-test\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-test\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-test ---
[INFO] Changes detected - recompiling the module!
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-test ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-test ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-test ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\target\mod-test-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-test\pom.xml to E:\repo\com\lx\mod-test\0.0.1-SNAPSHOT\mod-test-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-all 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-all ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-all\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod-all ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-all\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod-all ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod-all ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod-all ---
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-all ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\target\mod-all-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-all\pom.xml to E:\repo\com\lx\mod-all\0.0.1-SNAPSHOT\mod-all-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod-parent 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod-parent ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod-parent ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\pom.xml to E:\repo\com\lx\mod-parent\0.0.1-SNAPSHOT\mod-parent-0.0.1-SNAPSHOT.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mod3 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ mod3 ---
[INFO] Deleting D:\WorkSpace3\parentProj\mod-parent\mod3\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:build-classpath (generate-cached-classpath) @ mod3 ---
[INFO] Wrote classpath file 'D:\WorkSpace3\parentProj\mod-parent\mod3\target\cached_classpath.txt'.
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ mod3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\WorkSpace3\parentProj\mod-parent\mod3\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ mod3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes
[INFO]
[INFO] --- maven-dependency-plugin:2.8:unpack (unpack-common-test-classes) @ mod3 ---
[INFO] Configured Artifact: com.lx:mod2:tests:0.0.1-SNAPSHOT:jar
[INFO] Unpacking D:\WorkSpace3\parentProj\mod2\target\mod2-0.0.1-SNAPSHOT-tests.jar to D:\WorkSpace3\parentProj\mod-parent\mod3\target\test-classes with includes "" and excludes ""
[INFO]
[INFO] --- maven-surefire-plugin:2.15:test (default-test) @ mod3 ---
[INFO] Surefire report directory: D:\WorkSpace3\parentProj\mod-parent\mod3\target\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running mod2.Mod2Test
mod2 测试............
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.074 sec - in mod2.Mod2Test
Running org.mod3.Mod3Test
mod3 测试..................
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.004 sec - in org.mod3.Mod3Test
Results :
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ mod3 ---
[INFO] Building jar: D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ mod3 ---
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\target\mod3-0.0.1-SNAPSHOT.jar to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\WorkSpace3\parentProj\mod-parent\mod3\pom.xml to E:\repo\com\lx\mod3\0.0.1-SNAPSHOT\mod3-0.0.1-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] parentProj ......................................... SUCCESS [ 0.444 s]
[INFO] mod2 ............................................... SUCCESS [ 2.601 s]
[INFO] mod1 ............................................... SUCCESS [ 0.285 s]
[INFO] mod-test ........................................... SUCCESS [ 0.272 s]
[INFO] mod-all ............................................ SUCCESS [ 0.204 s]
[INFO] mod-parent ......................................... SUCCESS [ 0.055 s]
[INFO] mod3 ............................................... SUCCESS [ 1.846 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.959 s
[INFO] Finished at: 2016-10-27T14:13:42+08:00
[INFO] Final Memory: 22M/213M
[INFO] ------------------------------------------------------------------------
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