反射獲取注入到spring中的類物件的工具類
阿新 • • 發佈:2019-02-14
package com.gameqp.common.reflect; 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; /** * * @ClassName: SpringUtils * @Description: spring工具類 * @author duhai * @date 2017年3月7日 下午2:49:34 */ public final class SpringUtils implements BeanFactoryPostProcessor { private static ConfigurableListableBeanFactory beanFactory; // Spring應用上下文環境 @Override public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException { SpringUtils.beanFactory = beanFactory; } /** * 獲取物件 * * @param name * @return Object 一個以所給名字註冊的bean的例項 * @throws BeansException * */ @SuppressWarnings("unchecked") public static <T> T getBean(String name) throws BeansException { return (T) beanFactory.getBean(name); } /** * 獲取型別為requiredType的物件 * * @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包含一個與所給名稱匹配的bean定義,則返回true * * @param name * @return boolean */ public static boolean containsBean(String name) { return beanFactory.containsBean(name); } /** * 判斷以給定名字註冊的bean定義是一個singleton還是一個prototype。 * 如果與給定名字相應的bean定義沒有被找到,將會丟擲一個異常(NoSuchBeanDefinitionException) * * @param name * @return boolean * @throws NoSuchBeanDefinitionException * */ public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException { return beanFactory.isSingleton(name); } /** * @param name * @return Class 註冊物件的型別 * @throws NoSuchBeanDefinitionException * */ public static Class<?> getType(String name) throws NoSuchBeanDefinitionException { return beanFactory.getType(name); } /** * 如果給定的bean名字在bean定義中有別名,則返回這些別名 * * @param name * @return * @throws NoSuchBeanDefinitionException * */ public static String[] getAliases(String name) throws NoSuchBeanDefinitionException { return beanFactory.getAliases(name); } }