SpringBoot中获取spring.profiles.active的值

转载：https://www.cnblogs.com/linzhanfly/p/9056722.html

一、网上很多采用@Profile("dev")的方式获取，但是这个是类级别的

二、开发中可能需要代码级别

1、刚开始我想通过classpath下的文件读取方式，麻烦死了，于是换了个思路。

2、SpringBoot启动日志中有下面这句：

1	15:57:56.128 [restartedMain] INFO  c.d.o.OptplatformApplication - The following profiles are active: test

（1）跟踪代码：SpringApplication.run方法

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public ConfigurableApplicationContext run(String... args) {         StopWatch stopWatch = new StopWatch();         stopWatch.start();         ConfigurableApplicationContext context = null;         FailureAnalyzers analyzers = null;         configureHeadlessProperty();         SpringApplicationRunListeners listeners = getRunListeners(args);         listeners.starting();         try {             ApplicationArguments applicationArguments = new DefaultApplicationArguments(                     args);             ConfigurableEnvironment environment = prepareEnvironment(listeners,                     applicationArguments);             Banner printedBanner = printBanner(environment);             context = createApplicationContext();             analyzers = new FailureAnalyzers(context);             prepareContext(context, environment, listeners, applicationArguments,                     printedBanner);  // 在这里打印了，跟踪进去             refreshContext(context);             afterRefresh(context, applicationArguments);             listeners.finished(context, null);             stopWatch.stop();             if (this.logStartupInfo) {                 new StartupInfoLogger(this.mainApplicationClass)                         .logStarted(getApplicationLog(), stopWatch);             }             return context;         }         catch (Throwable ex) {             handleRunFailure(context, listeners, analyzers, ex);             throw new IllegalStateException(ex);         }     }

（2）跟踪代码：SpringApplication.prepareContext方法

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private void prepareContext(ConfigurableApplicationContext context,       ConfigurableEnvironment environment, SpringApplicationRunListeners listeners,       ApplicationArguments applicationArguments, Banner printedBanner) {    context.setEnvironment(environment);    postProcessApplicationContext(context);    applyInitializers(context);    listeners.contextPrepared(context);    if (this.logStartupInfo) {       logStartupInfo(context.getParent() == null);       logStartupProfileInfo(context);  // 名称很明显，继续跟踪进去    }    ...... }

（3）跟踪代码：SpringApplication.logStartupProfileInfo方法

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protected void logStartupProfileInfo(ConfigurableApplicationContext context) {     Log log = getApplicationLog();    if (log.isInfoEnabled()) {       String[] activeProfiles = context.getEnvironment().getActiveProfiles();       if (ObjectUtils.isEmpty(activeProfiles)) {          String[] defaultProfiles = context.getEnvironment().getDefaultProfiles();          log.info("No active profile set, falling back to default profiles: "                + StringUtils.arrayToCommaDelimitedString(defaultProfiles));        }       else {          log.info("The following profiles are active: "                + StringUtils.arrayToCommaDelimitedString(activeProfiles));  //找到了，很明显用了ApplicationContxt容器，接下来就是写个工具类来获取Application就行啦。        }    } }

　（4）编写SpringContxtUtil工具类

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/**  * 项目名称:  * 类名: SpringContextUtil  * 描述： 获取bean的工具类，可用于在线程里面获取bean  * 创建人: awsm  * 创建时间: Dec 17, 2015 10:46:44 PM  * 修改人：little evil  * 修改时间：May 18, 2018 04:01:34 PM  * 修改备注：添加getActiveProfile方法,获取当前环境  * 版本：1.1  */ @Component public class SpringContextUtil implements ApplicationContextAware {       private static ApplicationContext context = null;       /* (non Javadoc)      * @Title: setApplicationContext      * @Description: spring获取bean工具类      * @param applicationContext      * @throws BeansException      * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)      */     @Override     public void setApplicationContext(ApplicationContext applicationContext)             throws BeansException {         this.context = applicationContext;     }       // 传入线程中     public static <T> T getBean(String beanName) {         return (T) context.getBean(beanName);     }       // 国际化使用     public static String getMessage(String key) {         return context.getMessage(key, null, Locale.getDefault());     }       /// 获取当前环境     public static String getActiveProfile() {         return context.getEnvironment().getActiveProfiles()[0];     } } // 该工具类从网上抄来的，最后添加个获取方法就完成了，这样就能在代码级别通过环境条件来控制方法行为了。