Java-Maven（六）：Eclipse中Maven插件的命令操作

　　之前几个章节学习了maven的概念，及maven插件安装后如何创建工程，那么maven工程中是如何使用maven命令呢？本章节将会学习这个话题。

在pom.xml中配置maven命令插件

如果向在maven工程中使用maven命令，就必须在pom.xml文件中配置maven命令插件。接下来基于上一章文章（《Java-Maven（五）：Eclipse&Maven下创建java工程&web工程》）中创建的java web maven工程之上，进行pom.xml下配置安装maven命令插件。

配置之前pom.xml内容如下：

 <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/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.dx</groupId>
   <artifactId>maven-web-project01</artifactId>
   <packaging>war</packaging>
   <version>0.0.1-SNAPSHOT</version>
   <name>maven-web-project01 Maven Webapp</name>
   <url>http://maven.apache.org</url>
   <dependencies>
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <version>3.8.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
   <build>
     <finalName>maven-web-project01</finalName>
   </build>
 </project>

配置之后pom.xml内容如下：

 <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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.dx</groupId>
     <artifactId>maven-web-project01</artifactId>
     <packaging>war</packaging>
     <version>0.0.1-SNAPSHOT</version>
     <name>maven-web-project01 Maven Webapp</name>
     <url>http://maven.apache.org</url>
     <dependencies>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>3.8.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
     <build>
         <finalName>maven-web-project01</finalName>
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <!-- 不设置采用最新的插件版本 ，也可以去http://maven.apache.org/components/plugins/maven-compiler-plugin/找自己需要的版本号 -->
                 <version>3.1</version>
                 <configuration>
                     <!-- 源代码使用的开发版本 -->
                     <source>1.8</source>
                     <!-- 需要生成的目标class文件的编译版本 -->
                     <target>1.8</target>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>
         </plugins>
     </build>
 </project>

配置之后，如果在pom.xml上右键-》Run As下包含如下截图内容，就说明安装成功。

在maven工程中执行maven命令：

我们可以基于上边的安装后maven命令插件后，测试体验下Maven install的作用，点击后控制台会打印信息：

 [INFO] Scanning for projects...
 [INFO]
 [INFO] ------------------------------------------------------------------------
 [INFO] Building maven-web-project01 Maven Webapp 0.0.-SNAPSHOT
 [INFO] ------------------------------------------------------------------------
 [INFO]
 [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ maven-web-project01 ---
 [WARNING] Using platform encoding (UTF- actually) to copy filtered resources, i.e. build is platform dependent!
 [INFO] Copying  resource
 [INFO]
 [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ maven-web-project01 ---
 [INFO] Changes detected - recompiling the module!
 [INFO] Compiling  source file to D:\workspace4\maven-web-project01\target\classes
 [INFO]
 [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ maven-web-project01 ---
 [WARNING] Using platform encoding (UTF- actually) to copy filtered resources, i.e. build is platform dependent!
 [INFO] skip non existing resourceDirectory D:\workspace4\maven-web-project01\src\test\resources
 [INFO]
 [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ maven-web-project01 ---
 [INFO] Nothing to compile - all classes are up to date
 [INFO]
 [INFO] --- maven-surefire-plugin:2.12.:test (default-test) @ maven-web-project01 ---
 [INFO]
 [INFO] --- maven-war-plugin:2.2:war (default-war) @ maven-web-project01 ---
 [INFO] Packaging webapp
 [INFO] Assembling webapp [maven-web-project01] in [D:\workspace4\maven-web-project01\target\maven-web-project01]
 [INFO] Processing war project
 [INFO] Copying webapp resources [D:\workspace4\maven-web-project01\src\main\webapp]
 [INFO] Webapp assembled in [ msecs]
 [INFO] Building war: D:\workspace4\maven-web-project01\target\maven-web-project01.war
 [INFO] WEB-INF\web.xml already added, skipping
 [INFO]
 [INFO] --- maven-install-plugin:2.4:install (default-install) @ maven-web-project01 ---
 [INFO] Installing D:\workspace4\maven-web-project01\target\maven-web-project01.war to C:\Users\Administrator\.m2\repository\com\dx\maven-web-project01\0.0.-SNAPSHOT\maven-web-project01-0.0.-SNAPSHOT.war
 [INFO] Installing D:\workspace4\maven-web-project01\pom.xml to C:\Users\Administrator\.m2\repository\com\dx\maven-web-project01\0.0.-SNAPSHOT\maven-web-project01-0.0.-SNAPSHOT.pom
 [INFO] ------------------------------------------------------------------------
 [INFO] BUILD SUCCESS
 [INFO] ------------------------------------------------------------------------
 [INFO] Total time: 3.263 s
 [INFO] Finished at: --28T02::+:
 [INFO] Final Memory: 18M/201M
 [INFO] ------------------------------------------------------------------------