spring配置文件加载后applicationContext 为null

阅读更多

今天遇到一个问题：

通过ApplicationContext获取spring容器中的bean时，报ApplicationContext为null,代码如下：

public class ServiceBeanUtils implements ApplicationContextAware {

    protected static ApplicationContext staticContext;
	
	protected ServiceBeanUtils() {
		
    }

    public void setApplicationContext(ApplicationContext context) throws BeansException {
        staticContext = context;
    }

    public static Object getBean(String strBeanName) {
    	try {
    		return staticContext.getBean(strBeanName);
		} catch (Exception e) {
			e.printStackTrace();
		}
    	return null;
    }

    public static IBaseService getServiceBean(String strBeanName){
    	return (IBaseService)getBean(strBeanName);
    }

}

 查找原因：xml文件的加载顺序不正确，ServiceBeanUtils还没有加载， ApplicationContext还没有初始化，而服务启动时就有个类通过调用ApplicationContext去取bean进行初始化了

解决方案：先加载ServiceBeanUtils类，去初始化ApplicationContext，然后再加载要调用ApplicationContext的类去初始化此类

如下：