import org.springframework.beans.BeansException; import org.springframework.beans.factory.NoSuchBeanDefinitionException; import org.springframework.beans.factory.config.BeanDefinition; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Component; /** * Copy from https://code.google.com/p/carljavautils/source/browse/trunk/+carljavautils/src/com/hmw/spring/SpringContextUtil.java?r=25 * */ @Component @Scope(value=BeanDefinition.SCOPE_SINGLETON) public class SpringContext implements ApplicationContextAware { /** Spring应用环境上下文 */ private static ApplicationContext applicationContext; /** * 实现ApplicationContextAware接口的回调方法,设置上下文环境 * * @param applicationContext * @throws BeansException */ public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { SpringContext.applicationContext = applicationContext; } /** * @return ApplicationContext */ public static ApplicationContext getApplicationContext() { return applicationContext; } /** * 获取对象 * * @param name * @return 一个以所给名字注册的bean的实例 * @throws BeansException */ public static Object getBean(String name) throws BeansException { return applicationContext.getBean(name); } /** * 获取类型为requiredType的对象 * * @param name * bean注册名 * @param requiredType * 返回对象类型 * @return 返回requiredType类型对象 * @throws BeansException * 如果bean不能被类型转换 */ public static Object getBean(String name, Class<?> requiredType) throws BeansException { return applicationContext.getBean(name, requiredType); } /** * 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 applicationContext.containsBean(name); } /** * 判断以给定名字注册的bean定义是一个singleton还是一个prototype。 * * @param name * @return boolean * @throws NoSuchBeanDefinitionException * 如果与给定名字相应的bean定义没有被找到 */ public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException { return applicationContext.isSingleton(name); } /** * @param name * @return 注册对象的类型 * @throws NoSuchBeanDefinitionException */ public static Class<?> getType(String name) throws NoSuchBeanDefinitionException { return applicationContext.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 applicationContext.getAliases(name); } }