多线程下@Autowired获取实例为空-java手动获取service实例

BeanContext.java

import org.springframework.beans.BeansException;  
import org.springframework.context.ApplicationContext;  
import org.springframework.context.ApplicationContextAware;  
import org.springframework.stereotype.Component;  
  
@Component  
public class BeanContext implements ApplicationContextAware {  
  
    private static ApplicationContext applicationContext;  
      
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {  
        BeanContext.applicationContext = applicationContext;  
    }  
      
    public static ApplicationContext getApplicationContext(){  
        return applicationContext;  
    }  
      
    @SuppressWarnings("unchecked")  
    public static <T> T getBean(String name) throws BeansException {  
        return (T)applicationContext.getBean(name);  
    }  
      
    public static <T> T getBean(Class<T> clz) throws BeansException {  
        return (T)applicationContext.getBean(clz);  
    }  
} 

keyWordInfoService = BeanContext.getApplicationContext().getBean(KeyWordInfoService.class)