spring boot:普通类调用spring bean对象

package com.roger.util;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
 * 普通类使用Spring Bean对象
 */
public class  implements ApplicationContextAware {
    private static ApplicationContext ctx = null;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (ctx == null){
            ctx = applicationContext;
        }
    }
    
     * 获取ApplicationContext
     * @return
     */
    public static ApplicationContext getApplicationContext(){
        return ctx;
    }
    
     * 通过Bean name获取Bean
     * @param name
     * @return
     */
    public static Object getBean(String name){
        return ctx.getBean(name);
    }
    
     * 通过Bean class获取Bean
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz){
        return ctx.getBean(clazz);
    }
    
     * 通过Bean name以及Class返回指定的Bean
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String name, Class<T> clazz){
        return ctx.getBean(name, clazz);
    }
}