工具类从spring里面获取对象

1. 创建工具类

/**
 * spring容器的相关方法，如根据名称获取spring实例
 *
 * @author 天真热
 * @create 2022-04-28 9:55
 * @desc
 **/

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

@Component
public class SpringContextUtils implements ApplicationContextAware {
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextUtils.applicationContext = applicationContext;
    }

    public static Object getBean(String name) {
        return applicationContext.getBean(name);
    }

    public static  T getBean(Class requiredType) {
        return applicationContext.getBean(requiredType);
    }

    public static  T getBean(String name, Class requiredType) {
        return applicationContext.getBean(name, requiredType);
    }

    public static boolean containsBean(String name) {
        return applicationContext.containsBean(name);
    }

    public static boolean isSingleton(String name) {
        return applicationContext.isSingleton(name);
    }

    public static Class getType(String name) {
        return applicationContext.getType(name);
    }
}

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2.调用
ps：正常我们不指定类注入到spring的名称，默认都是使用“首字母小写的类名”作为名称

 TaskRunKafkaLogService taskRunKafkaLogService = (TaskRunKafkaLogService) SpringContextUtils.getBean("taskRunKafkaLogServiceImpl");
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