1.首先创建一个AppliactionContext的工具类实现ApplicationContextAware接口用于获得appliactionContext对象
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
public class SpringContextUtil implements ApplicationContextAware{
private static ApplicationContext applicationContext;
// 下面的这个方法是继承ApplicationContextAware重写的方法
@Override
public void setApplicationContext(ApplicationContext applicationContext)
throws BeansException {
SpringContextUtil.applicationContext = applicationContext;
}
public static ApplicationContext getApplicationContext() {
return applicationContext;
}
public static Object getBean(String name) throws BeansException {
return applicationContext.getBean(name);
}
public static Object getBean(Class requiredType){
return applicationContext.getBean(requiredType);
}
public static Object getBean(String name, Class requiredType)
throws BeansException {
return applicationContext.getBean(name, requiredType);
}
public static boolean containsBean(String name) {
return applicationContext.containsBean(name);
}
public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
return applicationContext.isSingleton(name);
}
}
**2.在Spring容器中进行注册bean 在applicationContext.xml配置文件中
<bean id="SpringContextUtil" class="com.fx.util.SpringContextUtil" scope="singleton"></bean>
3.在普通类上需要进行标识@Component或者@Service 进行SPring容器的管理
@Component
public class ChineseProverbServerHandler extends SimpleChannelInboundHandler {
**********
}
4.然后在普通类中 获得appliactionContext对象 可以通过.class或者bean的名称获得Service
ApplicationContext applicationContext=SpringContextUtil.getApplicationContext();
IUserService userService=(IUserService) applicationContext.getBean(IUserService.class);