參考 ：https://blog.csdn.net/top_code/article/details/78570047

附上pom的 profiles配置

	<build>
		<finalName>${project.artifactId}</finalName>
		<resources>
			<resource>
				<directory>src/main/resources/</directory>
				<filtering>true</filtering>
 

			</resource>

		</resources>


		<plugins>

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<encoding>utf-8</encoding>
					<source>1.8</source
 
>
					<target>1.8</target>
				</configuration>
			</plugin>
		</plugins>
	</build>



	<profiles>
		<profile>
			<id>dev</id>
			<activation>
				<activeByDefault>true</activeByDefault>
			</activation>

			<properties
 
>
				<profilesActive>dev</profilesActive>
			</properties>

		</profile>
		<profile>
			<id>test</id>
			<properties>
				<profilesActive>test</profilesActive>
			</properties>
		</profile>
		<profile>
			<id>prod</id>
			<properties>
				<profilesActive>prod</profilesActive>
			</properties>
			<build>
				<filters>
					<filter>/Users/xxx/Desktop/prod.properties</filter>
				</filters>
			</build>

		</profile>
	</profiles>

如果使用的是 application-prod.yml 檔案; 裡面的佔位符會被prod.properties替換掉
佔位符用 兩個@@ 例如:@[email protected]