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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

  1. maven-study
  2. │  pom.xml
  3. │
  4. ├─first-sub-module
  5. │  │  pom.xml
  6. │  │
  7. │  ├─src
  8. │  │  ├─main
  9. │  │  │  └─java
  10. │  │  │      └─com
  11. │  │  │          └─shouke
  12. │  │  │              └─mvnstudy
  13. │  │  │                      HelloMaven.java
  14. │  │  │
  15. │  │  └─test
  16. │  │      └─java
  17. │  │          └─com
  18. │  │              └─shouke
  19. │  │                  └─mvnstudy
  20. │  │                          TestHelloMaven.java
  21. │  │
  22. │  └─sub-sub-module
  23. │      │  pom.xml
  24. │      │
  25. │      └─src
  26. │          ├─main
  27. │          │  └─java
  28. │          │      └─com
  29. │          │          └─shouke
  30. │          │              └─mvnstudy
  31. │          │                      HelloMaven.java
  32. │          │
  33. │          └─test
  34. │              └─java
  35. │                  └─com
  36. │                      └─shouke
  37. │                          └─mvnstudy
  38. │                                  TestHelloMaven.java
  39. │
  40. └─second-sub-module
  41.     │  pom.xml
  42.     │
  43.     └─src
  44.         ├─main
  45.         │  └─java
  46.         │      └─com
  47.         │          └─shouke
  48.         │              └─mvnstudy
  49.         │                      HelloMaven.java
  50.         │
  51.         └─test
  52.             └─java
  53.                 └─com
  54.                     └─shouke
  55.                         └─mvnstudy
  56.                                 TestHelloMaven.java

pom.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>parent-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  10.     <packaging>pom</packaging>
  12.     <dependencies>
  13.         <!-- junit 依赖 -->
  14.         <dependency>
  15.             <groupId>junit</groupId>
  16.             <artifactId>junit</artifactId>
  17.             <version>4.10</version>
  18.             <scope>test</scope>
  19.         </dependency>
  20.     </dependencies>
  21.     
  22.     <modules>    
  23.         <module>first-sub-module</module>
  24.         <module>second-sub-module</module>
  25.     </modules>
  26. </project>
  27. </xml>

first-sub-module/pom.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  6.     
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>first-sub-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  11.     <dependencies>
  12.         <!-- junit 依赖 -->
  13.         <dependency>
  14.             <groupId>junit</groupId>
  15.             <artifactId>junit</artifactId>
  16.             <version>4.10</version>
  17.             <scope>test</scope>
  18.         </dependency>
  19.         <dependency>
  20.             <groupId>com.shouke.mvnstudy</groupId>
  21.             <artifactId>second-sub-module</artifactId>
  22.             <version>1.0.0-SNAPSHOT</version>
  23.         </dependency>
  24.         <dependency>
  25.             <groupId>com.shouke.mvnstudy</groupId>
  26.             <artifactId>sub-sub-module</artifactId>
  27.             <version>1.0.0-SNAPSHOT</version>
  28.         </dependency>
  29.     </dependencies>
  31.     <parent>
  32.         <groupId>com.shouke.mvnstudy</groupId>
  33.         <!--父项目id-->
  34.         <artifactId>parent-module</artifactId>
  35.         <version>1.0.0-SNAPSHOT</version>
  36.     </parent>
  38. </project>
  39. </xml>

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

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>sub-sub-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  11.     <dependencies>
  12.         <!-- junit 依赖 -->
  13.         <dependency>
  14.             <groupId>junit</groupId>
  15.             <artifactId>junit</artifactId>
  16.             <version>4.10</version>
  17.             <scope>test</scope>
  18.         </dependency>
  19.     </dependencies>
  20. </project>
  21. </xml>

second-sub-module/pom.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>second-sub-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  11.     <dependencies>
  12.         <!-- junit 依赖 -->
  13.         <dependency>
  14.             <groupId>junit</groupId>
  15.             <artifactId>junit</artifactId>
  16.             <version>4.10</version>
  17.             <scope>test</scope>
  18.         </dependency>
  19.     </dependencies>
  21.     <parent>
  22.         <groupId>com.shouke.mvnstudy</groupId>
  23.         <!--父项目id-->
  24.         <artifactId>parent-module</artifactId>
  25.         <version>1.0.0-SNAPSHOT</version>
  26.     </parent>
  28. </project>
  29. </xml>

学习实践

-pl选项应用

  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module  compile
  2. [INFO] Scanning for projects...
  3. [INFO]                                                                         
  4. [INFO] ------------------------------------------------------------------------
  5. [INFO] Building first-sub-module 1.0.0-SNAPSHOT
  6. [INFO] ------------------------------------------------------------------------
  7. [INFO] ------------------------------------------------------------------------
  8. [INFO] BUILD FAILURE
  9. [INFO] ------------------------------------------------------------------------
  10. [INFO] Total time: 0.219s
  11. [INFO] Finished at: Fri Dec 24 11:20:23 CST 2021
  12. [INFO] Final Memory: 17M/1447M
  13. [INFO] ------------------------------------------------------------------------
  14. [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]
  15. [ERROR] 
  16. [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
  17. [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  18. [ERROR] 
  19. [ERROR] For more information about the errors and possible solutions, please read the following articles:
  20. [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

-am选项应用

  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module -am compile
  2. [INFO] Scanning for projects...
  3. [INFO] ------------------------------------------------------------------------
  4. [INFO] Reactor Build Order:
  5. [INFO] 
  6. [INFO] parent-module
  7. [INFO] second-sub-module
  8. [INFO] first-sub-module
  9. [INFO]                                                                         
  10. [INFO] ------------------------------------------------------------------------
  11. [INFO] Building parent-module 1.0.0-SNAPSHOT
  12. [INFO] ------------------------------------------------------------------------
  13. [INFO] 
  14. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ parent-module ---
  15. [INFO]                                                                         
  16. [INFO] ------------------------------------------------------------------------
  17. [INFO] Building second-sub-module 1.0.0-SNAPSHOT
  18. [INFO] ------------------------------------------------------------------------
  19. [INFO] 
  20. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
  21. [INFO] Deleting /root/maven-study/second-sub-module/target
  22. [INFO] 
  23. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
  24. [debug] execute contextualize
  25. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  26. [INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
  27. [INFO] 
  28. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
  29. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  30. [INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
  31. [INFO]                                                                         
  32. [INFO] ------------------------------------------------------------------------
  33. [INFO] Building first-sub-module 1.0.0-SNAPSHOT
  34. [INFO] ------------------------------------------------------------------------
  35. [INFO] 
  36. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ first-sub-module ---
  37. [INFO] 
  38. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ first-sub-module ---
  39. [debug] execute contextualize
  40. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  41. [INFO] skip non existing resourceDirectory /root/maven-study/first-sub-module/src/main/resources
  42. [INFO] 
  43. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ first-sub-module ---
  44. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  45. [INFO] Compiling 1 source file to /root/maven-study/first-sub-module/target/classes
  46. [INFO] ------------------------------------------------------------------------
  47. [INFO] Reactor Summary:
  48. [INFO] 
  49. [INFO] parent-module ..................................... SUCCESS [0.146s]
  50. [INFO] second-sub-module ................................. SUCCESS [0.576s]
  51. [INFO] first-sub-module .................................. SUCCESS [0.346s]
  52. [INFO] ------------------------------------------------------------------------
  53. [INFO] BUILD SUCCESS
  54. [INFO] ------------------------------------------------------------------------
  55. [INFO] Total time: 1.187s
  56. [INFO] Finished at: Fri Dec 24 11:22:06 CST 2021
  57. [INFO] Final Memory: 22M/1096M
  58. [INFO] ------------------------------------------------------------------------

-amd选项应用

对比示例

  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module compile
  2. [INFO] Scanning for projects...
  3. [INFO]                                                                         
  4. [INFO] ------------------------------------------------------------------------
  5. [INFO] Building second-sub-module 1.0.0-SNAPSHOT
  6. [INFO] ------------------------------------------------------------------------
  7. [INFO] 
  8. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
  9. [INFO] 
  10. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
  11. [debug] execute contextualize
  12. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  13. [INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
  14. [INFO] 
  15. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
  16. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  17. [INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
  18. [INFO] ------------------------------------------------------------------------
  19. [INFO] BUILD SUCCESS
  20. [INFO] ------------------------------------------------------------------------
  21. [INFO] Total time: 0.976s
  22. [INFO] Finished at: Fri Dec 24 11:21:18 CST 2021
  23. [INFO] Final Memory: 23M/1447M
  24. [INFO] ------------------------------------------------------------------------
  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module -am compile
  2. [INFO] Scanning for projects...
  3. [INFO] ------------------------------------------------------------------------
  4. [INFO] Reactor Build Order:
  5. [INFO] 
  6. [INFO] parent-module
  7. [INFO] second-sub-module
  8. [INFO]                                                                         
  9. [INFO] ------------------------------------------------------------------------
  10. [INFO] Building parent-module 1.0.0-SNAPSHOT
  11. [INFO] ------------------------------------------------------------------------
  12. [INFO] 
  13. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ parent-module ---
  14. [INFO]                                                                         
  15. [INFO] ------------------------------------------------------------------------
  16. [INFO] Building second-sub-module 1.0.0-SNAPSHOT
  17. [INFO] ------------------------------------------------------------------------
  18. [INFO] 
  19. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
  20. [INFO] Deleting /root/maven-study/second-sub-module/target
  21. [INFO] 
  22. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
  23. [debug] execute contextualize
  24. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  25. [INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
  26. [INFO] 
  27. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
  28. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  29. [INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
  30. [INFO] ------------------------------------------------------------------------
  31. [INFO] Reactor Summary:
  32. [INFO] 
  33. [INFO] parent-module ..................................... SUCCESS [0.132s]
  34. [INFO] second-sub-module ................................. SUCCESS [0.536s]
  35. [INFO] ------------------------------------------------------------------------
  36. [INFO] BUILD SUCCESS
  37. [INFO] ------------------------------------------------------------------------
  38. [INFO] Total time: 0.771s
  39. [INFO] Finished at: Fri Dec 24 11:24:13 CST 2021
  40. [INFO] Final Memory: 23M/1447M
  41. [INFO] ------------------------------------------------------------------------

-amd应用示例

  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module -amd compile
  2. [INFO] Scanning for projects...
  3. [INFO] ------------------------------------------------------------------------
  4. [INFO] Reactor Build Order:
  5. [INFO] 
  6. [INFO] second-sub-module
  7. [INFO] first-sub-module
  8. [INFO]                                                                         
  9. [INFO] ------------------------------------------------------------------------
  10. [INFO] Building second-sub-module 1.0.0-SNAPSHOT
  11. [INFO] ------------------------------------------------------------------------
  12. [INFO] 
  13. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
  14. [INFO] Deleting /root/maven-study/second-sub-module/target
  15. [INFO] 
  16. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
  17. [debug] execute contextualize
  18. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  19. [INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
  20. [INFO] 
  21. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
  22. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  23. [INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
  24. [INFO]                                                                         
  25. [INFO] ------------------------------------------------------------------------
  26. [INFO] Building first-sub-module 1.0.0-SNAPSHOT
  27. [INFO] ------------------------------------------------------------------------
  28. [INFO] 
  29. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ first-sub-module ---
  30. [INFO] Deleting /root/maven-study/first-sub-module/target
  31. [INFO] 
  32. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ first-sub-module ---
  33. [debug] execute contextualize
  34. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  35. [INFO] skip non existing resourceDirectory /root/maven-study/first-sub-module/src/main/resources
  36. [INFO] 
  37. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ first-sub-module ---
  38. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  39. [INFO] Compiling 1 source file to /root/maven-study/first-sub-module/target/classes
  40. [INFO] ------------------------------------------------------------------------
  41. [INFO] Reactor Summary:
  42. [INFO] 
  43. [INFO] second-sub-module ................................. SUCCESS [0.652s]
  44. [INFO] first-sub-module .................................. SUCCESS [0.344s]
  45. [INFO] ------------------------------------------------------------------------
  46. [INFO] BUILD SUCCESS
  47. [INFO] ------------------------------------------------------------------------
  48. [INFO] Total time: 1.100s
  49. [INFO] Finished at: Fri Dec 24 11:24:33 CST 2021
  50. [INFO] Final Memory: 24M/1157M
  51. [INFO] ------------------------------------------------------------------------

嵌套子模块构建

  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module/sub-sub-module compile
  2. [INFO] Scanning for projects...
  3. [ERROR] Could not find the selected project in the reactor: first-sub-module/sub-sub-module -> [Help 1]
  4. [ERROR] 
  5. [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
  6. [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  7. [ERROR] 
  8. [ERROR] For more information about the errors and possible solutions, please read the following articles:
  9. [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MavenExecutionException

修改first-sub-module/pom.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  6.     
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>first-sub-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  10.     <packaging>pom</packaging>
  12.     <dependencies>
  13.         <!-- junit 依赖 -->
  14.         <dependency>
  15.             <groupId>junit</groupId>
  16.             <artifactId>junit</artifactId>
  17.             <version>4.10</version>
  18.             <scope>test</scope>
  19.         </dependency>
  20.         <dependency>
  21.             <groupId>com.shouke.mvnstudy</groupId>
  22.             <artifactId>second-sub-module</artifactId>
  23.             <version>1.0.0-SNAPSHOT</version>
  24.         </dependency>
  25.     </dependencies>
  27.     <parent>
  28.         <groupId>com.shouke.mvnstudy</groupId>
  29.         <!--父项目id-->
  30.         <artifactId>parent-module</artifactId>
  31.         <version>1.0.0-SNAPSHOT</version>
  32.     </parent>
  33.     
  34.     <modules>
  35.         <module>sub-sub-module</module>
  36.     </modules>
  38. </project>
  39. </xml>

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

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>sub-sub-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  11.     <dependencies>
  12.         <!-- junit 依赖 -->
  13.         <dependency>
  14.             <groupId>junit</groupId>
  15.             <artifactId>junit</artifactId>
  16.             <version>4.10</version>
  17.             <scope>test</scope>
  18.         </dependency>
  19.     </dependencies>
  20.     
  21.     <parent>
  22.         <groupId>com.shouke.mvnstudy</groupId>
  23.         <!--父项目id-->
  24.         <artifactId>first-sub-module</artifactId>
  25.         <version>1.0.0-SNAPSHOT</version>
  26.     </parent>
  27. </project>
  28. </xml>
  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl first-sub-module/sub-sub-module -am compile
  2. [INFO] Scanning for projects...
  3. [INFO] ------------------------------------------------------------------------
  4. [INFO] Reactor Build Order:
  5. [INFO] 
  6. [INFO] parent-module
  7. [INFO] second-sub-module
  8. [INFO] first-sub-module
  9. [INFO] sub-sub-module
  10. [INFO]                                                                         
  11. [INFO] ------------------------------------------------------------------------
  12. [INFO] Building parent-module 1.0.0-SNAPSHOT
  13. [INFO] ------------------------------------------------------------------------
  14. [INFO] 
  15. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ parent-module ---
  16. [INFO]                                                                         
  17. [INFO] ------------------------------------------------------------------------
  18. [INFO] Building second-sub-module 1.0.0-SNAPSHOT
  19. [INFO] ------------------------------------------------------------------------
  20. [INFO] 
  21. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ second-sub-module ---
  22. [INFO] Deleting /root/maven-study/second-sub-module/target
  23. [INFO] 
  24. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ second-sub-module ---
  25. [debug] execute contextualize
  26. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  27. [INFO] skip non existing resourceDirectory /root/maven-study/second-sub-module/src/main/resources
  28. [INFO] 
  29. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ second-sub-module ---
  30. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  31. [INFO] Compiling 1 source file to /root/maven-study/second-sub-module/target/classes
  32. [INFO]                                                                         
  33. [INFO] ------------------------------------------------------------------------
  34. [INFO] Building first-sub-module 1.0.0-SNAPSHOT
  35. [INFO] ------------------------------------------------------------------------
  36. [INFO] 
  37. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ first-sub-module ---
  38. [INFO] Deleting /root/maven-study/first-sub-module/target
  39. [INFO]                                                                         
  40. [INFO] ------------------------------------------------------------------------
  41. [INFO] Building sub-sub-module 1.0.0-SNAPSHOT
  42. [INFO] ------------------------------------------------------------------------
  43. [INFO] 
  44. [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ sub-sub-module ---
  45. [INFO] 
  46. [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ sub-sub-module ---
  47. [debug] execute contextualize
  48. [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
  49. [INFO] skip non existing resourceDirectory /root/maven-study/first-sub-module/sub-sub-module/src/main/resources
  50. [INFO] 
  51. [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ sub-sub-module ---
  52. [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
  53. [INFO] Compiling 1 source file to /root/maven-study/first-sub-module/sub-sub-module/target/classes
  54. [INFO] ------------------------------------------------------------------------
  55. [INFO] Reactor Summary:
  56. [INFO] 
  57. [INFO] parent-module ..................................... SUCCESS [0.148s]
  58. [INFO] second-sub-module ................................. SUCCESS [0.728s]
  59. [INFO] first-sub-module .................................. SUCCESS [0.005s]
  60. [INFO] sub-sub-module .................................... SUCCESS [0.370s]
  61. [INFO] ------------------------------------------------------------------------
  62. [INFO] BUILD SUCCESS
  63. [INFO] ------------------------------------------------------------------------
  64. [INFO] Total time: 1.370s
  65. [INFO] Finished at: Fri Dec 24 11:39:07 CST 2021
  66. [INFO] Final Memory: 22M/1098M
  67. [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

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>parent-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  11.     <dependencies>
  12.         <!-- junit 依赖 -->
  13.         <dependency>
  14.             <groupId>junit</groupId>
  15.             <artifactId>junit</artifactId>
  16.             <version>4.10</version>
  17.             <scope>test</scope>
  18.         </dependency>
  19.     </dependencies>
  20.    
  21. </project>
  22. </xml>

修改second-sub-module/pom.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.shouke.mvnstudy</groupId>
  8.     <artifactId>second-sub-module</artifactId>
  9.     <version>1.0.0-SNAPSHOT</version>
  11.     <dependencies>
  12.         <!-- junit 依赖 -->
  13.         <dependency>
  14.             <groupId>junit</groupId>
  15.             <artifactId>junit</artifactId>
  16.             <version>4.10</version>
  17.             <scope>test</scope>
  18.         </dependency>
  19.     </dependencies>
  21. </project>
  22. </xml>
  1. # mvn clean -Dautoconfig.skip=true -Dmaven.test.skip=true -pl second-sub-module compile
  2. [INFO] Scanning for projects...
  3. [ERROR] Could not find the selected project in the reactor: second-sub-module -> [Help 1]
  4. [ERROR] 
  5. [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
  6. [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  7. [ERROR] 
  8. [ERROR] For more information about the errors and possible solutions, please read the following articles:
  9. [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MavenExecutionException

如上，提示找不到模块。

-------------------------------文字太少，占位符---------------------------------

-------------------------------文字太少，占位符---------------------------------

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

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