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
- mvn release -p product
- mvn release -p test
- 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)