记一次自定义管理工厂使用spring自动装载bean

1.核心工厂配置类

@Component
public class HandlerContext {

    private Map<String, AbstractHandler> handlerMap;

    private HandlerContext() {
    }

    private void init(Map<String, AbstractHandler> handlerMap) {
        this.handlerMap = handlerMap;
    }

    public AbstractHandler getInstance(String type) {
        AbstractHandler handler = handlerMap.get(type);
        if (handler == null) {
            System.out.println("没有type为‘" + type + "’的处理器");
            throw new IllegalArgumentException("not found handler for type: " + type);
        }
        return handler;
    }

    //初始化处理器
    @Bean
    private Map<String, AbstractHandler> initHandlerContext(Map<String, AbstractHandler> handlerMap){
        this.init(handlerMap);
        return this.handlerMap;
    }

}

2.抽象处理父类

public abstract class AbstractHandler {

    protected static final Logger log = LoggerFactory.getLogger(AbstractHandler.class);

    @Autowired
    protected HandlerThreadPool handlerThreadPool;
    @Autowired
    protected RedisTemplate redisTemplate;

    public abstract String handler(ChannelHandlerContext ctx, NettyMessage message);

}

3.子类写法 需使用spring的service注解

@Service("base")
public class BaseHandler extends AbstractHandler 

@Service("mls")
public class GameMLSHandler extends AbstractHandler

等等等·····

4. 使用

AbstractHandler handler = handlerContext.getInstance(message.getType());
handler.handler(ctx, message);

5.线程池数组
可根据角标指定哪一个线程去处理，可解决部分多次发送等多线程问题。

@Component
public class HandlerThreadPool {

    //线程池数组
    private static ExecutorService[] handlerThreadPool = new ExecutorService[5];

    public HandlerThreadPool() {
        for (int i = 0; i < handlerThreadPool.length; i++) {
            handlerThreadPool[i] = Executors.newFixedThreadPool(1);
        }
    }

    public ExecutorService getHandlerThread(int index){
        return index > handlerThreadPool.length ? null : handlerThreadPool[index];
    }

    public static int getThreadSize(){
        return handlerThreadPool.length;
    }
}

以上的NettyMessage为自定义消息类，需根据具体业务自行编写