场景:Spring Boot 打 jar 包时,文件命名增加编译时间;以及在 application.yml
配置文件中拿到编译时间;
- Apache Maven 3.8.2
- Spring Boot 2.4.1
一、maven.build.timestamp
1、pom.xml
<properties>
<buildTime>${maven.build.timestamp}</buildTime>
<maven.build.timestamp.format>yyyy-MM-dd HH:mm:ss</maven.build.timestamp.format>
</properties>
2、application.yml
app:
version: @project.version@
buildTime: @buildTime@
要在 application.yml
配置中获取到 pom.xml
中的属性,需要添加如下配置
<build>
<!-- jar 包命名格式 -->
<finalName>${project.artifactId}-${version}-${buildTime}</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
不过这种方式获取到的时间有时区问题,拿到的是 UTC 时间,无法指定时区,因此比中国晚 8 小时;为解决时区问题,可使用插件 buildnumber-maven-plugin
或 build-helper-maven-plugin
获取编译时间
二、buildnumber-maven-plugin
1、pom.xml
<build>
<finalName>${project.artifactId}-${version}-${timestamp}</finalName>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>buildnumber-maven-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<timestampFormat>yyyy-MM-dd HH:mm:ss</timestampFormat>
</configuration>
<executions>
<execution>
<goals>
<goal>create-timestamp</goal>
</goals>
</execution>
</executions>
<inherited>false</inherited>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
2、application.yml
app:
version: @project.version@
buildTime: @timestamp@
三、build-helper-maven-plugin
1、pom.xml
<build>
<finalName>${project.artifactId}-${version}-${buildTime}</finalName>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>3.2.0</version>
<executions>
<execution>
<id>timestamp-property</id>
<goals>
<goal>timestamp-property</goal>
</goals>
<configuration>
<name>buildTime</name>
<pattern>yyyyMMddHHmmss</pattern>
<locale>zh_CN</locale>
<timeZone>GMT+8</timeZone>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
2、application.yml
app:
version: @project.version@
buildTime: @buildTime@
⚠️注意:finalName
标签配置的 jar 包名称格式中,如果存在冒号:
时,虽然可以在 IDEA 中点击 Run
按钮启动,但是部署时使用 java -jar ***.jar
无法启动并报错:
找不到或无法加载主类 org.springframework.boot.loader.JarLauncher
上面三种方式通过 maven 打包之后在运行,都可以在 yml 配置中获取到编译的时间值;但是如果没打包,直接点击 Run
按钮启动 Spring Boot 程序;maven.build.timestamp
可以正常获取到时间,buildnumber-maven-plugin
的 timestamp 为空;而 build-helper-maven-plugin
直接报错:
17:55:22.077 [main] ERROR org.springframework.boot.SpringApplication - Application run failed
org.yaml.snakeyaml.scanner.ScannerException: while scanning for the next token
found character '@' that cannot start any token. (Do not use @ for indentation)
in 'reader', line 23, column 14:
buildTime: @buildTime@
^
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