SpringUtil代码下沉@20210308

ipu-rest-scaffold/src/main/java/com/ai/ipu/server/util/SpringUtil.java

package com.ai.ipu.server.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;
@Component
@Lazy(false)
public class SpringUtil implements ApplicationContextAware {
	private static final Logger log = LoggerFactory.getLogger(SpringUtil.class);
	private static ApplicationContext applicationContext;
	private static void initApplicationContext(ApplicationContext applicationContext) {
		if(SpringUtil.applicationContext == null) {
			SpringUtil.applicationContext = applicationContext;
        }
	}
	
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        initApplicationContext(applicationContext);
        log.debug("---------------------------------------------------------------------");
        log.debug("ApplicationContext配置成功：");
        log.debug("可以通过调用SpringUtils.getAppContext()获取applicationContext对象");
        log.debug("applicationContext=" + SpringUtil.applicationContext);
        log.debug("---------------------------------------------------------------------");
    }
    //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);
    }
}