下面这段代码是存在一个spring-boot-starter中,引入到其他项目中,启动后获得不到ApplicationContext,原因是启动类中,没有扫描到对应路径:
增加代码:@ComponentScan(value = "com.XXX.common.project")
代码如下
@Service public class SpringContextHolder implements ApplicationContextAware, DisposableBean { private static ApplicationContext applicationContext = null; /** * 取得存储在静态变量中的ApplicationContext. */ public static ApplicationContext getApplicationContext() { return applicationContext; } /** * 实现ApplicationContextAware接口, 注入Context到静态变量中. */ @Override public void setApplicationContext(ApplicationContext applicationContext) { SpringContextHolder.applicationContext = applicationContext; } /** * 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型. */ @SuppressWarnings("unchecked") public static <T> T getBean(String name) { return (T) applicationContext.getBean(name); } /** * 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型. */ public static <T> T getBean(Class<T> requiredType) { return applicationContext.getBean(requiredType); } /** * 清除SpringContextHolder中的ApplicationContext为Null. */ public static void clearHolder() { applicationContext = null; } /** * 发布事件 * * @param event */ public static void publishEvent(ApplicationEvent event) { if (applicationContext == null) { return; } applicationContext.publishEvent(event); } /** * 实现DisposableBean接口, 在Context关闭时清理静态变量. */ @Override @SneakyThrows public void destroy() { SpringContextHolder.clearHolder(); } }
标签:ApplicationContextAware,applicationContext,ApplicationContext,实现,getBean,static, From: https://www.cnblogs.com/use-D/p/17142994.html