原因:
netty中无法使用注入的bean,因为NettyServerHandler是netty启动的时候new出来,并没有交给spring IOC托管
方法1:
想在生成对象时完成某些初始化操作,而这些初始化操作又依赖于注入的bean,因此可以使用@PostConstruct注解一个init方法来完成初始化,该方法会在bean注入完成后被自动调用。
public class NettyServerHandler extends ChannelInboundHandlerAdapter { @Autowired private RedisService redisService; private static NettyServerHandler nettyServerHandler; @PostConstruct public void init() { nettyServerHandler = this; } @Override public void channelActive(ChannelHandlerContext ctx) { nettyServerHandler.redisService.getString() } //。。。。。。。。。以下部分省略 }
方法2:
使用工具类来获取需要的bean,在spring容器外的类调用bean的方法,在需要的地方NettyOperate nettyOperate = SpringUtils.getBean(NettyOperate.class);即可
import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.stereotype.Component; /** - 获取StringBean必须要加入到容器中 */ @Component public class SpringUtils implements ApplicationContextAware { private static ApplicationContext applicationContext; /** - 重写父类方法 - @param applicationContext - @throws BeansException */ @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { if(SpringUtils.applicationContext == null){ SpringUtils.applicationContext = applicationContext; } } public static ApplicationContext getApplicationContext() { return applicationContext; } public static Object getBean(String name){ return getApplicationContext().getBean(name); } public static <T> T getBean(Class<T> clazz){ return getApplicationContext().getBean(clazz); } }