===== maven字段详解 ===== http://blog.csdn.net/yaerfeng/article/details/26448417


maven中有很多语法，这里我们说说一些常用的语法

依赖

<dependency>
	<groupId>org.hibernate</groupId>
	<artifactId>hibernate-core</artifactId>
	<version>4.3.3.Final</version>
</dependency>

屏蔽依赖传递

<dependency>
	<groupId>org.hibernate</groupId>
	<artifactId>hibernate-core</artifactId>
	<version>4.3.3.Final</version>
	<exclusions>
		<groupId>dom4j</groupId>
		<artifactId>dom4j</artifactId><!--无需再声明版本-->
	</exclusions>
</dependency>

构建有效范围

<dependency>
	<groupId>org.hibernate</groupId>
	<artifactId>hibernate-core</artifactId>
	<version>4.3.3.Final</version>
	<scope>test</scope><!--scope标签声明为test，则依赖不会被传递。默认值是之compile，依赖会被传递-->
</dependency>

继承

<parent><!--指明父项目的坐标-->
	<groupId>cn.wp.test</groupId>
	<artifactId>parent</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<relativePath>../parent/pom.xml</relativePath>
</parent>

强制性继承（父pom.xml文件中直接添加依赖）

<dependency>
	<groupId>org.hibernate</groupId>
	<artifactId>hibernate-core</artifactId>
	<version>4.3.3.Final</version>
</dependency>

选择性继承（父pom.xml文件中添加依赖管理，子项目选择继承）

父项目
<dependencyManagement>
	<dependencies>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
			<version>4.3.3.Final</version>
		</dependency>
	</dependencies>
</dependencyManagement>
子项目
<dependency>
	<groupId>org.hibernate</groupId>
	<artifactId>hibernate-core</artifactId><!--无需再声明版本-->
</dependency>

聚合

<modules>
	<module>../main/pom.xml</module><!--指明模块项目的路径-->
	<module>../model1/pom.xml</module><!--指明模块项目的路径-->
</modules>

发布

配置项目pom.xml（声明发布的仓库）

<distributionManagement>
	<repository><!-- 发布版本发布仓库 -->
		<id>wepu-releases</id>
		<name>wepu-releases</name>
		<url>http://192.168.41.191:8081/nexus/content/repositories/releases/</url>
	</repository>
	<snapshotRepository><!-- 快照版本发布仓库 -->
		<id>wepu-snapshots</id>
		<name>wepu-snapshots</name>
		<url>http://192.168.41.191:8081/nexus/content/repositories/snapshots/</url>
	</snapshotRepository>
</distributionManagement>

配置maven 工作区中 settings.xml（发布的权限）

<servers>
	<server>
		<id>wepu-releases</id>
		<username>deployment</username>
		<password>deployment123</password>
	</server>
	<server>
		<id>wepu-snapshots</id>
		<username>deployment</username>
		<password>deployment123</password>
	</server>
</servers>

配置 nexus 镜像

配置maven 工作区中 settings.xml

<mirrors>
	<mirror>
		<id>central</id>
		<mirrorOf>*</mirrorOf> <!-- 对所有仓库镜像 -->
		<name>central mirror</name>
		<url>http://192.168.41.191:8081/nexus/content/groups/public/</url>
	</mirror>
</mirrors>