[maven] 如何 release 一個 svn project

第一次從零開始使用 maven。
1. 將設定放入 project 的 pom.xml 中

<!-- 一定會用到的 release plugin -->
<plugin>
    <groupid>org.apache.maven.plugins</groupid>
    <artifactid>maven-release-plugin</artifactid>
    <version>2.5</version>
    <configuration>
        <tagbase>https://.../svn/.../tags</tagbase>
    </configuration>
</plugin>

<!-- 設定 deploy，沒有 server 測試時，可以放本機 -->
<distributionmanagement>
    <repository>
        <id>release</id>
        <name>release</name>
        <url>file://D:/release-jar</url>
    </repository>
</distributionmanagement>

<!-- scm plugin 用到的，check in 及 check out 路徑等等 -->
<scm>
    <url>scm:svn:https://.../svn/.../tags</url>
    <connection>scm:svn:https:/.../svn/.../trunk/</connection>
    <developerconnection>scm:svn:https://.../svn/.../trunk/</developerconnection>
</scm>

2. setting.xml 的設定
檔案請放在 .../.m2/setting.xml

<pre class="brush: xml"><settings xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/SETTINGS/1.0.0" xsi:schemalocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <servers>
        <server>
            <id>release</id>
            <username>hudson</username>
            <password>hudson</password>
        </server>
    </servers>
</settings>

3. maven 指令
username 跟 password 也可以不用指定，指定後要確定該帳號有 svn connection 的權限。
建議先試試: mvn -DdryRun=true release:prepare，如果檔案都沒問題再執行 release 動作。
mvn -Dusername=hudson -Dpassword=hudson release:clean release:prepare release:perform

Reference
Guide to using the release plugin
https://maven.apache.org/guides/mini/guide-releasing.html
Maven release plugin
http://maven.apache.org/maven-release/maven-release-plugin/