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Java maven反应堆构建学习实践
来源:cnblogs  作者:授客  时间:2022/1/3 0:27:01  对本文有异议

Java maven反应堆构建学习实践

实践环境

Apache Maven 3.0.5 (Red Hat 3.0.5-17)

应用示例

示例项目结构

maven示例项目组织结构如下

maven-study
│  pom.xml
│
├─first-sub-module
│  │  pom.xml
│  │
│  ├─src
│  │  ├─main
│  │  │  └─java
│  │  │      └─com
│  │  │          └─shouke
│  │  │              └─mvnstudy
│  │  │                      HelloMaven.java
│  │  │
│  │  └─test
│  │      └─java
│  │          └─com
│  │              └─shouke
│  │                  └─mvnstudy
│  │                          TestHelloMaven.java
│  │
│  └─sub-sub-module
│      │  pom.xml
│      │
│      └─src
│          ├─main
│          │  └─java
│          │      └─com
│          │          └─shouke
│          │              └─mvnstudy
│          │                      HelloMaven.java
│          │
│          └─test
│              └─java
│                  └─com
│                      └─shouke
│                          └─mvnstudy
│                                  TestHelloMaven.java
│
└─second-sub-module
    │  pom.xml
    │
    └─src
        ├─main
        │  └─java
        │      └─com
        │          └─shouke
        │              └─mvnstudy
        │                      HelloMaven.java
        │
        └─test
            └─java
                └─com
                    └─shouke
                        └─mvnstudy
                                TestHelloMaven.java

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>parent-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    
    <modules>    
        <module>first-sub-module</module>
        <module>second-sub-module</module>
    </modules>
</project>
</xml>

first-sub-module/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>first-sub-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.shouke.mvnstudy</groupId>
            <artifactId>second-sub-module</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.shouke.mvnstudy</groupId>
            <artifactId>sub-sub-module</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <parent>
        <groupId>com.shouke.mvnstudy</groupId>
        <!--父项目id-->
        <artifactId>parent-module</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>

</project>
</xml>

first-sub-module/sub-sub-module/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>sub-sub-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>
</xml>

second-sub-module/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>second-sub-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <parent>
        <groupId>com.shouke.mvnstudy</groupId>
        <!--父项目id-->
        <artifactId>parent-module</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>

</project>
</xml>

学习实践

-pl选项应用

# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module  compile
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building first-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.219s
[INFO] Finished at: Fri Dec 24 11:20:23 CST 2021
[INFO] Final Memory: 17M/1447M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project first-sub-module: Could not resolve dependencies for project com.shouke.mvnstudy:first-sub-module:jar:1.0.0-SNAPSHOT: Could not find artifact com.shouke.mvnstudy:second-sub-module:jar:1.0.0-SNAPSHOT -> [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

-am选项应用

# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module -am compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] parent-module
[INFO] second-sub-module
[INFO] first-sub-module
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building parent-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ parent-module ---
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building second-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
[INFO] Deleting /root/maven-study/second-sub-module/target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building first-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ first-sub-module ---
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ first-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/first-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ first-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/first-sub-module/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] parent-module ..................................... SUCCESS [0.146s]
[INFO] second-sub-module ................................. SUCCESS [0.576s]
[INFO] first-sub-module .................................. SUCCESS [0.346s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.187s
[INFO] Finished at: Fri Dec 24 11:22:06 CST 2021
[INFO] Final Memory: 22M/1096M
[INFO] ------------------------------------------------------------------------

-amd选项应用

对比示例

# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module compile
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building second-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.976s
[INFO] Finished at: Fri Dec 24 11:21:18 CST 2021
[INFO] Final Memory: 23M/1447M
[INFO] ------------------------------------------------------------------------
# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module -am compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] parent-module
[INFO] second-sub-module
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building parent-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ parent-module ---
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building second-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
[INFO] Deleting /root/maven-study/second-sub-module/target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] parent-module ..................................... SUCCESS [0.132s]
[INFO] second-sub-module ................................. SUCCESS [0.536s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.771s
[INFO] Finished at: Fri Dec 24 11:24:13 CST 2021
[INFO] Final Memory: 23M/1447M
[INFO] ------------------------------------------------------------------------

-amd应用示例

# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module -amd compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] second-sub-module
[INFO] first-sub-module
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building second-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
[INFO] Deleting /root/maven-study/second-sub-module/target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building first-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ first-sub-module ---
[INFO] Deleting /root/maven-study/first-sub-module/target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ first-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/first-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ first-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/first-sub-module/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] second-sub-module ................................. SUCCESS [0.652s]
[INFO] first-sub-module .................................. SUCCESS [0.344s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.100s
[INFO] Finished at: Fri Dec 24 11:24:33 CST 2021
[INFO] Final Memory: 24M/1157M
[INFO] ------------------------------------------------------------------------

嵌套子模块构建

# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module/sub-sub-module compile
[INFO] Scanning for projects...
[ERROR] Could not find the selected project in the reactor: first-sub-module/sub-sub-module -> [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/MavenExecutionException

修改first-sub-module/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>first-sub-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.shouke.mvnstudy</groupId>
            <artifactId>second-sub-module</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <parent>
        <groupId>com.shouke.mvnstudy</groupId>
        <!--父项目id-->
        <artifactId>parent-module</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>
    
    <modules>
        <module>sub-sub-module</module>
    </modules>

</project>
</xml>

修改first-sub-module/sub-sub-module/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>sub-sub-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    
    <parent>
        <groupId>com.shouke.mvnstudy</groupId>
        <!--父项目id-->
        <artifactId>first-sub-module</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>
</project>
</xml>
# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module/sub-sub-module -am compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] parent-module
[INFO] second-sub-module
[INFO] first-sub-module
[INFO] sub-sub-module
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building parent-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ parent-module ---
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building second-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
[INFO] Deleting /root/maven-study/second-sub-module/target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building first-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ first-sub-module ---
[INFO] Deleting /root/maven-study/first-sub-module/target
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building sub-sub-module 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ sub-sub-module ---
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ sub-sub-module ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /root/maven-study/first-sub-module/sub-sub-module/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ sub-sub-module ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /root/maven-study/first-sub-module/sub-sub-module/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] parent-module ..................................... SUCCESS [0.148s]
[INFO] second-sub-module ................................. SUCCESS [0.728s]
[INFO] first-sub-module .................................. SUCCESS [0.005s]
[INFO] sub-sub-module .................................... SUCCESS [0.370s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.370s
[INFO] Finished at: Fri Dec 24 11:39:07 CST 2021
[INFO] Final Memory: 22M/1098M
[INFO] ------------------------------------------------------------------------
结论

注意-pl只适用在“父子”结构的项目中,构建子项目

针对以上结论,修改相关pom.xml,再次测试验证

修改pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>parent-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
   
</project>
</xml>

修改second-sub-module/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.shouke.mvnstudy</groupId>
    <artifactId>second-sub-module</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <!-- junit 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>
</xml>
# mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module compile
[INFO] Scanning for projects...
[ERROR] Could not find the selected project in the reactor: second-sub-module -> [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/MavenExecutionException

如上,提示找不到模块。

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原文链接:http://www.cnblogs.com/shouke/p/15758382.html

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