Maven懶人包（觀念）

前言

Apache Maven is a software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting and documentation from a central piece of infomation.
Apache Maven是一種軟體專案管理和解析工具。根據專案物件模型模型（POM）的概念，Maven可以管理專案從構建到報告和文件。

觀念

Maven Lifecycle and phase and goal

執行maven的示範

mvn org.apache.maven.plugins:maven-clean-plugin:2.5:clean

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/usr/share/maven/lib/guice.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[INFO] Scanning for projects...
[INFO]
[INFO] ---------------------< tw.com.jack:SpringBootDemo >---------------------
[INFO] Building SpringBootDemo 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-cli) @ SpringBootDemo ---
[INFO] Deleting /home/jackchen/download/SpringBootDemo/target
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.646 s
[INFO] Finished at: 2022-07-29T15:21:46+08:00
[INFO] ------------------------------------------------------------------------

mvn clean

ex 0: 想要掠過testCase

ex 1:  清除跟編譯JAR檔，jar 檔放在/home/xxxx/download/SpringBootDemo/target

mvn clean package

ex2:  清除跟編譯JAR檔跟執行，跟intelliJ run application 有同等效果

mvn clean package spring-boot:run
....
.   ____          _            __ _ _
/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/  ___)| |_)| | | | | || (_| |  ) ) ) )
'  |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot ::                (v2.7.2)
......
[  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
.....
^C[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  44.548 s
[INFO] Finished at: 2022-07-29T15:31:10+08:00
[INFO] ------------------------------------------------------------------------

ex3: 透過maven 上版到測試機，一定會出錯，因為我沒有在pom.xml 指定deploy的對象

mvn site:deploy

ex4: 透過maven 安裝到本機

mvn install

ex5: 透過maven 安裝到nexus

mvn deploy:deploy-file
-Durl="https:///repository/privatehosted"
-DgroupId=tw.com.jack
-DartifactId=SpringBootDemo
-Dversion=1.7
-Dpackaging=jar
-DgeneratePom=true
-DrepositoryId=
#先在Setting指定帳號密碼
-s settings.xml -DUSERNAME_VAR=JACK -DPASSWORD_VAR=SuperJack

ex6: 不想要每次都線上下載dependency jar

mvn -o <指令>

ex7: 分析專案dependency jar 有哪些依存性

mvn dependency:tree

ex8: 檢查Repositories清單

mvn dependency:list-repositories

ex9: 檢查maven執行時的settings參數

mvn help:effective-settings

ex10: 檢查maven執行時的系統變數

mvn help:system

ex11: 啟動SpringBoot並特別指定SpringBoot yml參數

mvn spring-boot:run –Dspring-boot.run.jvmArguments="-Dserver.port=9092"

ex12: 尋找最新的專案依存Jar的版次並更新版次

mvn versions:update-child-modules

ex13: 指定profile

mvn -P<profileName>

後述