引入maven打包插件

<build><plugins><!-- 打包时生成打包时间 --><plugin><groupId>org.codehaus.mojo</groupId><artifactId>buildnumber-maven-plugin</artifactId><version>3.2.0</version><configuration><timestampFormat>yyyy-MM-dd HH:mm:ss</timestampFormat></configuration><executions><execution><goals><goal>create-timestamp</goal></goals></execution></executions><inherited>false</inherited></plugin></plugins><!-- maven打包时包含静态资源文件 --><resources><resource><directory>src/main/resources</directory><includes><include>**/*.properties</include><include>**/*.yaml</include><include>META-INF/**</include><include>**/*.xml</include></includes><!-- true表示maven会对文件进行过滤，将@project.version@替换为该属性的值 --><filtering>true</filtering></resource><resource><directory>src/main/java</directory><includes><include>**/*.properties</include><include>**/*.xml</include></includes><filtering>true</filtering></resource></resources>
</build>

2. application.properties内引用

#获取build时的时间
app.buildTime=@timestamp@
#获取项目版本
app.version=@project.version@