一、注意
运行 Maven 构建命令时，必须进入到含有 pom.xml文件的目录中。如果没有在 pom.xml 所在的目录运行 Maven 的构建命令，就会发生错误：The goal you specified requires a project to execute but there is no POM in this directory
二、🚀清理操作的命令
命令：
mvn clean
效果：
删除 target 目录
（代码为成功效果演示，可忽略…）
D:\maven-workspace\spaceVedio\pro03-maven-parent>mvn clean [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Reactor Build Order: [INFO] [INFO] pro03-maven-parent [pom] [INFO] pro06-maven-module [jar] [INFO] pro05-maven-module [jar] [INFO] pro04-maven-module [jar] [INFO] [INFO] ----------------< cpm.haojin.maven:pro03-maven-parent >----------------- [INFO] Building pro03-maven-parent 1.0-SNAPSHOT [1/4] [INFO] --------------------------------[ pom ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ pro03-maven-parent --- [INFO] [INFO] ----------------< cpm.haojin.maven:pro06-maven-module >----------------- [INFO] Building pro06-maven-module 1.0-SNAPSHOT [2/4] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ pro06-maven-module --- [INFO] Deleting D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\target [INFO] [INFO] ----------------< cpm.haojin.maven:pro05-maven-module >----------------- [INFO] Building pro05-maven-module 1.0-SNAPSHOT [3/4] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ pro05-maven-module --- [INFO] Deleting D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\target [INFO] [INFO] ----------------< com.haojin.maven:pro04-maven-module >----------------- [INFO] Building pro04-maven-module 1.0-SNAPSHOT [4/4] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ pro04-maven-module --- [INFO] Deleting D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\target [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary for pro03-maven-parent 1.0-SNAPSHOT: [INFO] [INFO] pro03-maven-parent ................................. SUCCESS [ 0.104 s] [INFO] pro06-maven-module ................................. SUCCESS [ 0.024 s] [INFO] pro05-maven-module ................................. SUCCESS [ 0.030 s] [INFO] pro04-maven-module ................................. SUCCESS [ 0.030 s] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 0.289 s [INFO] Finished at: 2022-11-27T12:55:29+08:00 [INFO] ------------------------------------------------------------------------
三、🚀编译操作的命令
命令 - 效果：
编译主程序的命令：mvn compile 编译测试程序的命令：mvn test-compile
- 主体程序编译后的结果存放在
target/classes目录下 - 测试程序编译后的结果存放在
target/test-classes目录下
四、🚀测试操作的命令
命令：
mvn test
效果：
对工程中 test目录 下的程序进行测试，测试的报告放在target/surefire-reports目录
五、🚀打包操作的命令
命令：
mvn package
效果：
执行命令的工程会被打包成 —— jar包，得到的jar包被存放在target目录中
六、🚀安装操作的命令
命令：
mvn intall
效果：
将本地构建过程中生成的 jar 包存入 Maven 本地仓库。
（代码为成功效果演示，可忽略… 示例的pro03-maven-parent工程是打包方式为pom的管理子工程的工程，其与其子工程生成的jar包就会被存放到本地仓库的指定路径中去）
D:\maven-workspace\spaceVedio\pro03-maven-parent>mvn install [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Reactor Build Order: [INFO] [INFO] pro03-maven-parent [pom] [INFO] pro06-maven-module [jar] [INFO] pro05-maven-module [jar] [INFO] pro04-maven-module [jar] [INFO] [INFO] ----------------< cpm.haojin.maven:pro03-maven-parent >----------------- [INFO] Building pro03-maven-parent 1.0-SNAPSHOT [1/4] [INFO] --------------------------------[ pom ]--------------------------------- [INFO] [INFO] --- maven-install-plugin:2.4:install (default-install) @ pro03-maven-parent --- [INFO] Installing D:\maven-workspace\spaceVedio\pro03-maven-parent\pom.xml to d:\maven-repository\cpm\haojin\maven\pro03-maven-parent\1.0-SNAPSHOT\pro03-maven-parent-1.0-SNAPSHOT.pom [INFO] [INFO] ----------------< cpm.haojin.maven:pro06-maven-module >----------------- [INFO] Building pro06-maven-module 1.0-SNAPSHOT [2/4] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ pro06-maven-module --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\src\main\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ pro06-maven-module --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\target\classes [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ pro06-maven-module --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\src\test\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ pro06-maven-module --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\target\test-classes [INFO] [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ pro06-maven-module --- [INFO] Surefire report directory: D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\target\surefire-reports ------------------------------------------------------- T E S T S ------------------------------------------------------- Running cpm.haojin.maven.AppTest Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.007 sec Results : Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 [INFO] [INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ pro06-maven-module --- [INFO] Building jar: D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\target\pro06-maven-module-1.0-SNAPSHOT.jar [INFO] [INFO] --- maven-install-plugin:2.4:install (default-install) @ pro06-maven-module --- [INFO] Installing D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\target\pro06-maven-module-1.0-SNAPSHOT.jar to d:\maven-repository\cpm\haojin\maven\pro06-maven-module\1.0-SNAPSHOT\pro06-maven-module-1.0-SNAPSHOT.jar [INFO] Installing D:\maven-workspace\spaceVedio\pro03-maven-parent\pro06-maven-module\pom.xml to d:\maven-repository\cpm\haojin\maven\pro06-maven-module\1.0-SNAPSHOT\pro06-maven-module-1.0-SNAPSHOT.pom [INFO] [INFO] ----------------< cpm.haojin.maven:pro05-maven-module >----------------- [INFO] Building pro05-maven-module 1.0-SNAPSHOT [3/4] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ pro05-maven-module --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\src\main\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ pro05-maven-module --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\target\classes [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ pro05-maven-module --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\src\test\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ pro05-maven-module --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\target\test-classes [INFO] [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ pro05-maven-module --- [INFO] Surefire report directory: D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\target\surefire-reports ------------------------------------------------------- T E S T S ------------------------------------------------------- Running cpm.haojin.maven.AppTest Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.005 sec Results : Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 [INFO] [INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ pro05-maven-module --- [INFO] Building jar: D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\target\pro05-maven-module-1.0-SNAPSHOT.jar [INFO] [INFO] --- maven-install-plugin:2.4:install (default-install) @ pro05-maven-module --- [INFO] Installing D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\target\pro05-maven-module-1.0-SNAPSHOT.jar to d:\maven-repository\cpm\haojin\maven\pro05-maven-module\1.0-SNAPSHOT\pro05-maven-module-1.0-SNAPSHOT.jar [INFO] Installing D:\maven-workspace\spaceVedio\pro03-maven-parent\pro05-maven-module\pom.xml to d:\maven-repository\cpm\haojin\maven\pro05-maven-module\1.0-SNAPSHOT\pro05-maven-module-1.0-SNAPSHOT.pom [INFO] [INFO] ----------------< com.haojin.maven:pro04-maven-module >----------------- [INFO] Building pro04-maven-module 1.0-SNAPSHOT [4/4] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ pro04-maven-module --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\src\main\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ pro04-maven-module --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\target\classes [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ pro04-maven-module --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\src\test\resources [INFO] [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ pro04-maven-module --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\target\test-classes [INFO] [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ pro04-maven-module --- [INFO] Surefire report directory: D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\target\surefire-reports ------------------------------------------------------- T E S T S ------------------------------------------------------- Running com.haojin.maven.AppTest Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.008 sec Results : Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 [INFO] [INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ pro04-maven-module --- [INFO] Building jar: D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\target\pro04-maven-module-1.0-SNAPSHOT.jar [INFO] [INFO] --- maven-install-plugin:2.4:install (default-install) @ pro04-maven-module --- [INFO] Installing D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\target\pro04-maven-module-1.0-SNAPSHOT.jar to d:\maven-repository\com\haojin\maven\pro04-maven-module\1.0-SNAPSHOT\pro04-maven-module-1.0-SNAPSHOT.jar [INFO] Installing D:\maven-workspace\spaceVedio\pro03-maven-parent\pro04-maven-module\pom.xml to d:\maven-repository\com\haojin\maven\pro04-maven-module\1.0-SNAPSHOT\pro04-maven-module-1.0-SNAPSHOT.pom [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary for pro03-maven-parent 1.0-SNAPSHOT: [INFO] [INFO] pro03-maven-parent ................................. SUCCESS [ 0.171 s] [INFO] pro06-maven-module ................................. SUCCESS [ 1.400 s] [INFO] pro05-maven-module ................................. SUCCESS [ 0.370 s] [INFO] pro04-maven-module ................................. SUCCESS [ 0.410 s] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.452 s [INFO] Finished at: 2022-11-27T13:18:56+08:00 [INFO] ------------------------------------------------------------------------
——————————
被存放的 jar 包在 Maven 仓库中的路径是根据它的坐标生成的：
- 某个工程坐标：
<groupId>cpm.haojin.maven</groupId> <artifactId>pro04-maven-module</artifactId> <version>1.0-SNAPSHOT</version>
- 生成的路径：
D:\maven-repository\com\haojin\maven\pro04-maven-module\1.0-SNAPSHOT\pro04-maven-module-1.0-SNAPSHOT.jar
