在 Java 项目中，系统构建编号和版本号管理的当前最佳实践是什么？具体来说:

public final class AppVersion
{
   // SVN should fill this out with the latest tag when it's checked out.

   private static final String APP_SVNURL_RAW = 
     "$HeadURL: svn+ssh://user@host/svnroot/app/trunk/src/AppVersion.java $";
   private static final String APP_SVN_REVISION_RAW = "$Revision: 325 $";  

   private static final Pattern SVNBRANCH_PAT = 
     Pattern.compile("(branches|trunk|releases)\\/([\\w\\.\\-]+)\\/.*");
   private static final String APP_SVNTAIL = 
     APP_SVNURL_RAW.replaceFirst(".*\\/svnroot\\/app\\/", "");

  private static final String APP_BRANCHTAG;
  private static final String APP_BRANCHTAG_NAME;
  private static final String APP_SVNREVISION = 
    APP_SVN_REVISION_RAW.replaceAll("\\$Revision:\\s*","").replaceAll("\\s*\\$", "");


  static {
    Matcher m = SVNBRANCH_PAT.matcher(APP_SVNTAIL);
    if (!m.matches()) {
      APP_BRANCHTAG = "[Broken SVN Info]";
      APP_BRANCHTAG_NAME = "[Broken SVN Info]";
    } else {
      APP_BRANCHTAG = m.group(1);
      if (APP_BRANCHTAG.equals("trunk")) {
        // this isn't necessary in this SO example, but it 
        // is since we don't call it trunk in the real case
        APP_BRANCHTAG_NAME = "trunk";
      } else {
        APP_BRANCHTAG_NAME = m.group(2);
      }
    }
  }

  public static String tagOrBranchName()
  { return APP_BRANCHTAG_NAME; }

  /** Answers a formatter String descriptor for the app version.
   * @return version string */
  public static String longStringVersion()
  { return "app "+tagOrBranchName()+" ("+
    tagOrBranchName()+", svn revision="+svnRevision()+")"; }

  public static String shortStringVersion()
  { return tagOrBranchName(); }

  public static String svnVersion()
  { return APP_SVNURL_RAW; }

  public static String svnRevision()
  { return APP_SVNREVISION; }

  public static String svnBranchId()
  { return APP_BRANCHTAG + "/" + APP_BRANCHTAG_NAME; } 

  public static final String banner()
  {
    StringBuilder sb = new StringBuilder();
    sb.append("\n----------------------------------------------------------------");
    sb.append("\nApplication -- ");
    sb.append(longStringVersion());
    sb.append("\n----------------------------------------------------------------\n");
    return sb.toString();
  }
}

最佳答案

对于我的几个项目，我捕获了 subversion 修订号、时间、运行构建的用户和一些系统信息，将它们填充到包含在应用程序 jar 中的 .properties 文件中，并在运行时读取该 jar。

Ant 代码如下所示:

<!-- software revision number -->
<property name="version" value="1.23"/>

<target name="buildinfo">
    <tstamp>
        <format property="builtat" pattern="MM/dd/yyyy hh:mm aa" timezone="America/New_York"/>
    </tstamp>        
    <exec executable="svnversion" outputproperty="svnversion"/>
    <exec executable="whoami" outputproperty="whoami"/>
    <exec executable="uname" outputproperty="buildsystem"><arg value="-a"/></exec>

    <propertyfile file="path/to/project.properties"
        comment="This file is automatically generated - DO NOT EDIT">        
        <entry key="buildtime" value="${builtat}"/>
        <entry key="build" value="${svnversion}"/>
        <entry key="builder" value="${whoami}"/>
        <entry key="version" value="${version}"/>
        <entry key="system" value="${buildsystem}"/>
    </propertyfile>
</target>

关于java - Java 项目的构建和版本编号(ant、cvs、hudson)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/690419/