Maven Profile标签

时间：2023-03-09 14:42:02
Maven Profile标签

Maven Profiles标签可以针对不同的环境来使用不同的配置文件

在发布的时候可以用

  1. mvn release -p product
  2. mvn release -p test
  3. mvn release -p dev

默认本地deploy的时候用的是dev的配置 文件

在编译项目的过程中，资源中的占位符${}会被替换成配置文件中的值，如果没有进行替换，则会出现问题。

<profiles>

		<profile>

			<id>product</id>

			<build>

				<filters>

					<filter>src/main/resources/release.properties</filter>

				</filters>

			</build>

		</profile>

		<profile>

			<id>dev</id>

			<activation>

				<activeByDefault>true</activeByDefault>

			</activation>

			<build>

				<filters>

					<filter>src/main/resources/dev.properties</filter>

				</filters>

			</build>

		</profile>

		<profile>

			<id>test</id>

			<build>

				<filters>

					<filter>src/main/resources/test.properties</filter>

				</filters>

			</build>

		</profile>

	</profiles>

如果编译时资源文件中的占位符没有被替换成配置文件中的值，则一般会抛出异常：

Circular placeholder reference 'db.url' in property definitions

        at org.springframework.beans.factory.config.PlaceholderConfigurerSupport.doProcessProperties(PlaceholderConfigurerSupport.java:209)

        at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer.processProperties(PropertyPlaceholderConfigurer.java:220)

        at com.showjoy.core.configure.SecPropertyPlaceholderConfigurer.processProperties(SecPropertyPlaceholderConfigurer.java:50)

        at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:84)

        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)

        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:656)

        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)

        at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)

        at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)

        at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)

        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5003)

        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5517)

        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)

        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)

        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1095)

        at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1960)

        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

        at java.util.concurrent.FutureTask.run(FutureTask.java:266)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

        at java.lang.Thread.run(Thread.java:745)

这时的处理办法是，把target中编译好的文件clean掉，重新用maven build下，确保资源文件中的占位符没有被替换成配置文件中的值

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