pipIrr-SV.git - Gitblit

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			package com.dy.common.springUtil;

			import org.springframework.beans.BeansException;
			import org.springframework.beans.MutablePropertyValues;
			import org.springframework.beans.factory.support.DefaultListableBeanFactory;
			import org.springframework.beans.factory.support.GenericBeanDefinition;
			import org.springframework.context.ApplicationContext;
			import org.springframework.context.ApplicationContextAware;
			import org.springframework.stereotype.Component;

			import java.util.Map;

			/**
			* 获取Springboot上下文，并通过上下文可以获取配置文件中的配置参数。
			* SpringBoot启动时，发现本类注解了@Component，会加载本类并实例化，
			* 实例化时发现本类实现了接口ApplicationContextAware，则会调用
			* setApplicationContext方法设置Spring上下文对象
			*/
			@Component
			public class SpringContextUtil implements ApplicationContextAware {

			private static ApplicationContext applicationContext = null;

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

			//获取applicationContext
			public static ApplicationContext getApplicationContext() {
			return applicationContext;
			}

			//通过name获取 Bean.
			public static Object getBean(String name) {
			return getApplicationContext().getBean(name);
			}

			//通过class获取Bean.
			public static <T> T getBean(Class<T> clazz) {
			return getApplicationContext().getBean(clazz);
			}

			/**
			* 同步方法注册bean到ApplicationContext中
			*
			* @param beanName
			* @param clazz
			* @param original bean的属性值
			*/
			public static synchronized void setBean(String beanName, Class<?> clazz, Map<String,Object> original) {
			//checkApplicationContext();
			DefaultListableBeanFactory beanFactory = (DefaultListableBeanFactory) applicationContext.getAutowireCapableBeanFactory();
			if(beanFactory.containsBean(beanName)){
			return;
			}
			//BeanDefinition beanDefinition = new RootBeanDefinition(clazz);
			GenericBeanDefinition definition = new GenericBeanDefinition();
			//类class
			definition.setBeanClass(clazz);
			//属性赋值
			definition.setPropertyValues(new MutablePropertyValues(original));
			//注册到spring上下文
			beanFactory.registerBeanDefinition(beanName, definition);
			}

			}