 
        
        
        记录一次问题
一位开发遇到了一个问题:如果此处<distributionManagement><repository><id>不存在于settings.xml将会发生错误。
    <!-- 用于上传远程maven私服的配置 -->
    <distributionManagement>
        <repository>
            <id>releases</id>
            <url>http://url/repository/releases/</url>
        </repository>
        <snapshotRepository>
            <id>snapshots</id>
            <url>http://url/repository/snapshots/</url>
        </snapshotRepository>
    </distributionManagement>
   <!-- settings.xml -->
    <server>
        <id>releases</id>
        <username>user</username>
        <password>pwd</password>
    </server>  
    <server>
        <id>snapshots</id>
        <username>user</username>
        <password>pwd</password>
    </server>
解决方法有两种:
<distributionManagement><repository><id><distributionManagement>配置
-DaltSnapshotDeploymentRepository和-DaltReleaseDeploymentRepository)当我走第二种方案时,但是未解决问题并出现一下提示。
 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project demo-project: Deployment failed: repository element was not specified in the POM inside distributionManagement element or in -DaltDeploymentRepository=id::layout::url parameter -> [Help 1]
原因:maven-deploy-plugin.version = 2.7不支持该参数。使用2.8+即可。
-am 参数使用mvn  deploy -am