获取SpringBean工具类

SpringBeanUtil代码如下:

package com.meeno.wzq.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @description: SpringBeanUtil
 * @author: Wzq
 * @create: 2019-10-08 16:24
 */
@Component
//实现Spring Bean生命周期接口ApplicationContextAware
public class SpringBeanUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if(SpringBeanUtil.applicationContext == null) {
            SpringBeanUtil.applicationContext = applicationContext;
        }
        System.out.println("---------------------------------------------------------------------");
        System.out.println("========ApplicationContext配置成功,在普通类可以通过调用SpringUtils.getAppContext()获取applicationContext对象,applicationContext="+SpringBeanUtil.applicationContext+"========");
        System.out.println("---------------------------------------------------------------------");
    }

    //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);
    }

    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }
}

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