Maven中为我们集成了软件配置管理的(SCM:Software Configuration Management)功能,他可以支持我们常用SVN、CVS等,到现在我使用的1.8.1版本,共支持18个命令:
scm:branch - branch the project(创建项目的分支) scm:validate - validate the scm information in the pom(校验SCM的配置信息) scm:add - command to add file(增加一个文件) scm:unedit - command to stop editing the working copy(停止编辑当前COPY) scm:export - command to get a fresh exported copy(拉一个全新的分支) scm:bootstrap - command to checkout and build a project(checkout并编译工程) scm:changelog - command to show the source code revisions(显示源码版本) scm:list - command for get the list of project files(列出工程的文件) scm:checkin - command for commiting changes(提交变更) scm:checkout - command for getting the source code(获取源码) scm:status - command for showing the scm status of the working copy(获取本地项目的状态) scm:update - command for updating the working copy with the latest changes(从服务器获取最新的版本) scm:diff - command for showing the difference of the working copy with the remote one(比较本地与远程服务器的差异) scm:update-subprojects - command for updating all projects in a multi project build(更新子项目) scm:edit - command for starting edit on the working copy(编辑) scm:tag - command for tagging a certain revision(打标签)
常用命令介绍
而我们常用只有以下这两个命令:
Usage
The SCM Plugin maps a lot of commands to a variety of scm implementations. But there are only 2 frequently used commands:
checkin - 提交变更 update - 从服务器上获取最新的版本
配置及使用
其它的SCM都有自己独特的命令来操作提交变更、或从服务器上获取最新的源吗,如SVN及CVS的操作就很不相同,使用Maven担任的SCM机制,就可以使得SCM的操作变得统一,以下是一个SVN配置示例,将以下的示例配置到pom.xml文件中
<project> ... <packaging>jar</packaging> <version>1.0-SNAPSHOT</version> <name>SCM Sample Project</name> <url>http://somecompany.com</url> <scm> <connection>scm:svn:http://somerepository.com/svn_repo/trunk</connection> <developerConnection>scm:svn:https://somerepository.com/svn_repo/trunk</developerConnection> <url>http://somerepository.com/view.cvs</url> </scm> ... </project>
照这样配置好的,现在我们要做提交或者更新,就按如下按行命令
提交:
mvn -Dmessage="<commit_log_here>" scm:checkin
获取最新版本:
mvn scm:update
SCM支持的连接类型
SCM支持两种连接类型:connection 及 developerConnection。
以下是一个连接类型为connection的配置示例:
<project> ... <build> [...] <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-scm-plugin</artifactId> <version>1.8.1</version> <configuration> <connectionType>connection</connectionType> </configuration> </plugin> ... </plugins ... </build> ... </project>
以下是一个连接类型为developerConnection的配置示例:
<project> ... <build> ... <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-scm-plugin</artifactId> <version>1.8.1</version> <configuration> <connectionType>developerConnection</connectionType> </configuration> </plugin> ... </plugins ... </build> ... </project>
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