记一次spring.profiles.active引用环境未生效问题

yml配置：

spring:
  profiles:
    active: @activatedProperties@

pom.xml环境：

<profiles>
    <!-- 本地环境 -->
    <profile>
        <id>dev</id>
        <activation>
            <!-- 默认激活dev -->
            <activeByDefault>true</activeByDefault>
        </activation>
        <properties>
            <activatedProperties>dev</activatedProperties>
            <jar.name>xxxxx</jar.name>
        </properties>
    </profile>
    <!-- 生产环境 -->
    <profile>
        <id>pro</id>
        <properties>
            <activatedProperties>pro</activatedProperties>
            <jar.name>xxxxx</jar.name>
        </properties>
    </profile>
</profiles>

现象及错误解决：

项目启动时报错说不能使用‘@’符号，根据网上的步骤将@activatedProperties@使用单引号括起来

spring:
  profiles:
    active: '@activatedProperties@'

结果：被当成字符串处理，引用未生效

springboot在启动的时候会识别当前环境，用引号之后识别的是一串字符串"@activatedProperties@",而下面才是我们需要的"dev"

Activated activeProfiles dev

2020-01-08 16:34:19.803 DEBUG 4256 --- [           main] .c.l.ClasspathLoggingApplicationListener : Application started with classpath: [file:/C:/Java/jdk1.8.0_141/jre/lib/charsets.jar......

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.1.RELEASE)

2020-01-08 16:34:19.848  INFO 4256 --- [           main] Application     : Starting ArgusServerApplication on XD021NB1911015a with PID 4256......
2020-01-08 16:34:19.848  INFO 4256 --- [           main] Application     : The following profiles are active: dev
2020-01-08 16:34:19.849 DEBUG 4256 --- [           main] o.s.boot.SpringApplication               : Loading source class Application
2020-01-08 16:34:19.878 DEBUG 4256 --- [           main] o.s.b.c.c.ConfigFileApplicationListener  : Activated activeProfiles dev

原因发现：

springboot项目如果没有直接继承SpringBoot即定义parent关系,pom.xml如下代码

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.1.RELEASE</version>
</parent>

而是如下方式

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-dependencies</artifactId>
    <version>${spring.boot.version}</version>
    <type>pom</type>
    <scope>import</scope>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>${spring.boot.version}</version>
</dependency>

则不能暴露配置，需要在build标签内添加如下配置即可

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-resources-plugin</artifactId>
    <version>2.7</version>
    <configuration>
        <delimiters>
            <delimiter>@</delimiter>
        </delimiters>
        <useDefaultDelimiters>false</useDefaultDelimiters>
    </configuration>
</plugin>

<resources>
    <resource>
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
        <includes>
            <include>application-${activatedProperties}.yml</include>
            <include>application.yml</include>
        </includes>
    </resource>
</resources>