应用场景：
1 可用在工具类中，
2 spring【Controller,service】环境中，
3 其中的一个方法getAopProxy可获得代理对象，需要将 @EnableAspectJAutoProxy(exposeProxy = true) 允许获取代理对象

import org.springframework.aop.framework.AopContext;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;/*** spring工具类 方便在非spring管理环境中获取bean** @author ruoyi*/
@Component
public final class SpringUtils implements BeanFactoryPostProcessor, ApplicationContextAware {/*** Spring应用上下文环境*/private static ConfigurableListableBeanFactory beanFactory;private static ApplicationContext applicationContext;@Overridepublic void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {SpringUtils.beanFactory = beanFactory;}@Overridepublic void setApplicationContext(ApplicationContext applicationContext) throws BeansException {SpringUtils.applicationContext = applicationContext;}/*** 获取对象** @param name* @return Object 一个以所给名字注册的bean的实例* @throws BeansException*/@SuppressWarnings("unchecked")public static <T> T getBean(String name) throws BeansException {return (T) beanFactory.getBean(name);}/*** 获取类型为requiredType的对象** @param clz* @return* @throws BeansException*/public static <T> T getBean(Class<T> clz) throws BeansException {T result = (T) beanFactory.getBean(clz);return result;}/*** 如果BeanFactory包含一个与所给名称匹配的bean定义，则返回true** @param name* @return boolean*/public static boolean containsBean(String name) {return beanFactory.containsBean(name);}/*** 判断以给定名字注册的bean定义是一个singleton还是一个prototype。 如果与给定名字相应的bean定义没有被找到，将会抛出一个异常（NoSuchBeanDefinitionException）** @param name* @return boolean* @throws NoSuchBeanDefinitionException*/public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {return beanFactory.isSingleton(name);}/*** @param name* @return Class 注册对象的类型* @throws NoSuchBeanDefinitionException*/public static Class<?> getType(String name) throws NoSuchBeanDefinitionException {return beanFactory.getType(name);}/*** 如果给定的bean名字在bean定义中有别名，则返回这些别名** @param name* @return* @throws NoSuchBeanDefinitionException*/public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {return beanFactory.getAliases(name);}/*** 获取aop代理对象** @param invoker* @return*/@SuppressWarnings("unchecked")public static <T> T getAopProxy(T invoker) {return (T) AopContext.currentProxy();}/*** 获取当前的环境配置，无配置返回null** @return 当前的环境配置*/public static String[] getActiveProfiles() {return applicationContext.getEnvironment().getActiveProfiles();}/*** 获取配置文件中的值** @param key 配置文件的key* @return 当前的配置文件的值*/public static String getRequiredProperty(String key) {return applicationContext.getEnvironment().getRequiredProperty(key);}
}