SpringBoot中获取spring.profiles.active的值
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2022-06-03 22:45:20
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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:
15:57:56.128 [restartedMain] INFO c.d.o.OptplatformApplication - The following profiles are active: test
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
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
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
/**
* 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。