import org.springframework.beans.BeansException; import org.springframework.beans.factory.NoSuchBeanDefinitionException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.stereotype.Component; @Component public class SpringContextUtil implements ApplicationContextAware { // Spring应用上下文环境 private static ApplicationContext applicationContext; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { SpringContextUtil.applicationContext = applicationContext; } /** * @return ApplicationContext */ public static ApplicationContext getApplicationContext() { return applicationContext; } /** * 获取对象 * @param name * @return Object 一个以所给名字注册的bean的实例 * @throws org.springframework.beans.BeansException */ @SuppressWarnings("unchecked") public static <T> T getBean(String name) throws BeansException { return (T) applicationContext.getBean(name); } /** * 获取类型为requiredType的对象 * @param clz * @return * @throws org.springframework.beans.BeansException */ public static <T> T getBean(Class<T> clz) throws BeansException { return (T) applicationContext.getBean(clz); } /** * 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 org.springframework.beans.factory.NoSuchBeanDefinitionException */ public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException { return applicationContext.isSingleton(name); } /** * 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); } /** * @param name * @return Class 注册对象的类型 * @throws org.springframework.beans.factory.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 org.springframework.beans.factory.NoSuchBeanDefinitionException */ public static String[] getAliases(String name) throws NoSuchBeanDefinitionException { return applicationContext.getAliases(name); } }
SpringContextUtil工具类
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转载自jaesonchen.iteye.com/blog/2287135
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