@PostConstruct +getapplicationcontext.getbean springboot获取getBean

Component
public class SpringContextUtils implements ApplicationContextAware {
public static ApplicationContext applicationContext;

@Override
public void setApplicationContext(ApplicationContext applicationContext)
throws BeansException {
SpringContextUtils.applicationContext = applicationContext;
}

public static Object getBean(String name) {
return applicationContext.getBean(name);
}

public static <T> T getBean(String name, Class<T> requiredType) {
return applicationContext.getBean(name, requiredType);
}

public static boolean containsBean(String name) {
return applicationContext.containsBean(name);
}

public static boolean isSingleton(String name) {
return applicationContext.isSingleton(name);
}

public static Class<? extends Object> getType(String name) {
return applicationContext.getType(name);
}

}

 

 

如果有报ApplicationContext空指针，则可能原因是没加载之前就往下走了，要在要 使用的类 前面加

@DependsOn("springContextUtils")


来源

springboot获取getBean方法以及ApplicationContext空指针问题解决

springboot获取getBean方法以及ApplicationContext空指针问题解决