使用Maven2过滤添加当前日期

Question

我有一个Maven2项目,我需要在属性文件中添加当前版本和当前日期.

对于当前版本,我已经使用过${project.version},它可以正常工作.

我的问题是如何在我的属性文件中设置当前日期(即Maven2完成构建的日期):

client.version=Version ${project.version}
client.build=???

(另外,如果我可以指定日期的格式,那将非常棒)

Answer 1

功能不适用于maven 2.2.1资源过滤.

请参阅:https://issues.apache.org/jira/browse/MRESOURCES-99

但您可以在父pom中创建自定义属性:

<properties>
    <maven.build.timestamp.format>yyMMdd_HHmm</maven.build.timestamp.format>
    <buildNumber>${maven.build.timestamp}</buildNumber>
</properties>

其中buildNumber是可以过滤到资源的新属性.

Answer 2

您可以使用Maven Buildnumber插件:

<build>
  <plugins>
    <plugin>
      <groupId>org.codehaus.mojo</groupId>
      <artifactId>buildnumber-maven-plugin</artifactId>
      <executions>
        <execution>
          <phase>initialize</phase>
          <goals>
            <goal>create</goal>
          </goals>
        </execution>
      </executions>
      <configuration>
        <doCheck>false</doCheck>
        <doUpdate>false</doUpdate>
        <timestampFormat>{0,date,yyyy-MM-dd HH:mm:ss}</timestampFormat>
      </configuration>
    </plugin>
  </plugins>
</build>

然后可以在属性$ {buildNumber}中找到该日期.

Answer 3

从Maven 2.1 M1开始,您现在可以${maven.build.timestamp}为您提供定义${maven.build.timestamp.format}

<properties>
    ...
    <maven.build.timestamp.format>yyyyMMdd-HHmm</maven.build.timestamp.format>
    ...
</properties>

Answer 4

Thomas Marti的答案是向正确的方向迈出的一步,但是有一种更简单的方法,不需要<scm>在POM中进行虚拟声明.使用buildnumber-maven-plugin,但使用create-timestamp目标.文件不清楚; 这是在YYYY-MM-DD格式中获取日期并将其放入build.date属性中的样子:

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>buildnumber-maven-plugin</artifactId>
    <version>1.2</version>
    <executions>
        <execution>
            <phase>validate</phase>
            <goals>
                <goal>create-timestamp</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <timestampFormat>yyyy-MM-dd</timestampFormat>
        <timestampPropertyName>build.date</timestampPropertyName>
    </configuration>
</plugin>

开箱即用,这在使用m2e的Eclipse中不起作用,因此您必须在POM <build>部分中添加以下内容:

<pluginManagement>
    <plugins>
        <plugin>
            <groupId>org.eclipse.m2e</groupId>
            <artifactId>lifecycle-mapping</artifactId>
            <version>1.0.0</version>
            <configuration>
                <lifecycleMappingMetadata>
                    <pluginExecutions>
                        <pluginExecution>
                            <pluginExecutionFilter>
                                <groupId>org.codehaus.mojo</groupId>
                                <artifactId>buildnumber-maven-plugin</artifactId>
                                <versionRange>[1.2,)</versionRange>
                                <goals>
                                    <goal>create-timestamp</goal>
                                </goals>
                            </pluginExecutionFilter>
                            <action>
                                <execute>
                                    <runOnConfiguration>true</runOnConfiguration>
                                    <runOnIncremental>true</runOnIncremental>
                                </execute>
                            </action>
                        </pluginExecution>
                    </pluginExecutions>
                </lifecycleMappingMetadata>
            </configuration>
        </plugin>
    </plugins>
</pluginManagement>

这告诉m2e你希望它在Eclipse中构建时继续运行插件.

现在,当您在Eclipse内部或外部构建时,正确生成时间戳并使用资源过滤!

令人遗憾的是,功能如此简单必须如此艰难......

Answer 5

另一个解决方案是在pom.xml中使用Groovy(可能不像Thomas Marti提出的解决方案那样合适):

   <build>
      <resources>
         <resource>
            <directory>src/main/resources</directory>
            <filtering>true</filtering>
         </resource>
      </resources>
      <plugins>
         <plugin>
            <groupId>org.codehaus.groovy.maven</groupId>
            <artifactId>gmaven-plugin</artifactId>
            <executions>
               <execution>
                  <phase>validate</phase>
                  <goals>
                     <goal>execute</goal>
                  </goals>
                  <configuration>
                     <source>
                     import java.util.Date 
                     import java.text.MessageFormat 
                     def vartimestamp = MessageFormat.format("{0,date,yyyyMMdd-HH:mm:ss}", new Date()) 
                     project.properties['buildtimestamp'] = vartimestamp
                     </source>
                  </configuration>
               </execution>
            </executions>
         </plugin>
      </plugins>
   </build>

然后使用该buildtimestamp属性:

client.version=${pom.version}
client.build=${buildtimestamp}

Answer 6

这对我有用.我想要的只是时间戳.

在pom ...

<properties>
    <maven.build.timestamp.format>yyyyMMdd-HHmm</maven.build.timestamp.format>
    <dev.build.timestamp>${maven.build.timestamp}</dev.build.timestamp>
</properties>
...
<overlay>
   <groupId>mystuff</groupId>
   <artifactId>mystuff.web</artifactId>
   <filtered>true</filtered>
</overlay>

并在JSP文件中......

<div>Built: ${dev.build.timestamp}</div>

示例结果是......

<div>Built: 20130419-0835</div>

Answer 7

粘贴${build.time}在属性文件和以下内容中pom.xml:

<build>
   <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>buildnumber-maven-plugin</artifactId>
        <version>1.3</version>
        <configuration>
          <timestampFormat>yyyy-MM-dd HH:mm:ss</timestampFormat>
          <timestampPropertyName>build.time</timestampPropertyName>
        </configuration>
        <executions>
          <execution>
            <phase>initialize</phase>
            <goals>
              <goal>create-timestamp</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
   </plugins>
</build>

另请参阅buildnumber-maven-plugin文档.

(其他答案让我特别关注Garret Wilson,但他的日食配置对我来说不是必需的,这让我忽略了他的答案,所以我发布了对我有用的东西.)

如果你想获得一个日期和一个时间的两个属性作为奖励,这就是你如何做到这一点:

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>buildnumber-maven-plugin</artifactId>
  <version>1.3</version>
  <executions>
    <execution>
      <id>build.date</id>
      <phase>initialize</phase>
      <goals>
        <goal>create-timestamp</goal>
      </goals>
      <configuration>
        <timestampFormat>yyyy-MM-dd</timestampFormat>
        <timestampPropertyName>build.date</timestampPropertyName>
      </configuration>
    </execution>
    <execution>
      <id>build.time</id>
      <phase>initialize</phase>
      <goals>
        <goal>create-timestamp</goal>
      </goals>
      <configuration>
        <timestampFormat>yyyy-MM-dd HH:mm:ss</timestampFormat>
        <timestampPropertyName>build.time</timestampPropertyName>
      </configuration>
    </execution>
  </executions>
</plugin>

Answer 8

它在maven 2.1.0对我有用

$ {} maven.build.timestamp