maven pom.xml tag properties

<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">
  <!-- 指定当前pom的版本 -->
  <modelVersion>4.0.0</modelVersion>
  
  <!-- I. Coordinate information of the project --> 
  < groupId > Reverse company website + project name </ groupId > 
  < artifactId > Project name + module name </ artifactId > 
  <!--
    first o: major version: no.
    Second 0: branch version number
    The third 0: minor version number
    Version type division: 1.SNAPSHOT (snapshot)
                  2.alpha (internal test)
                  3.beta (public beta)
                  4.Release (stable)
                  5.GA (formal)
  --> 
  < version > 0.0.1SNAPSHOT </ version > 
  <!-- maven project packaging method: default: jar, can specify war, zip, pom- --> 
  < packaging ></ packaging > 
  <!-- project description name --> 
  < name ></ name > 
  <!-- Project address --> 
  < url ></ url > 
  <!-- Project description --> 
  < description ></ description > 
  <!-- Developer information --> 
  < developers ></developers>
  <!-- License Information --> 
  < licenses ></ licenses > 
  <!-- Organization Information --> 
  < organization ></ organization >

  <!--二、依赖列表-->
  <dependencies>
      <!--依赖坐标-->
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.10</version>
          <type></type>
          <!-- 依赖范围：test-->
          <scope>test</scope>
          <!--Set whether the dependency is optional: true/false The default is the latter--> 
          < optional > false </ optional > 
          <!-- Exclude dependencies transitive list --> 
          < exclusions > 
              <!-- Exclude some unwanted dependencies --> 
              < exclusion ></ exclusion > 
          </ exclusions > 
      < / dependency > 
  </ dependencies >

  <!--三、依赖的管理:定义父模块的jar包便于子模块的继承-->
  <dependencyManagement>
      <dependencies>
        <dependency></dependency>
      </dependencies>
  </dependencyManagement>

  <!--四、插件列表:需指定插件的坐标-->
  <build>
      <plugin>
          <groupId></groupId>
          <artifactId></artifactId>
          <version></version>
      </plugin>
  </build>

  <!--五、用于子模块对于父模块pom的继承-->
  <parent></parent>

  
  <!--六、指定多个模块，可同时编译等操作-->
  <modules></modules>
</project>