java – SEVERE：无法调度事件：Eventbus com.google.common.eventbus.Sub

对于EventBus,我将我的 java Spring应用程序中的代码合并,并完全控制它,但结果没有改变.

当我在Spring sts(javaw)中运行EventBus时,没有问题,但是当我使用java -jar project.jar运行在服务器中时,它给出相同的SEVERE：无法分派事件：错误

下面没有为我工作

package edu.uams.event;

import java.awt.EventQueue;
import java.lang.reflect.InvocationTargetException;
import java.util.concurrent.Executor;

import org.apache.log4j.Logger;

import com.google.common.eventbus.AsyncEventBus;
import com.google.common.eventbus.EventHandler;
import com.google.common.eventbus.SubscriberExceptionHandler;


import edu.uams.domain.TirEvent;
import edu.uams.pacs.IncomingFileMonitor;

public class AysncTraumaEventBus extends AsyncEventBus {

    private final static Logger logger = Logger.getLogger(AysncTraumaEventBus.class);
    private String name = null;

    public AysncTraumaEventBus(Executor executor,SubscriberExceptionHandler subscriberExceptionHandler) {
        super(executor,subscriberExceptionHandler);    

        logger.info("AysncTraumaEventBus created.");
    }

    public AysncTraumaEventBus(String name,Executor executor) {
        super(name,executor);
        this.name=name;
        logger.info("AysncTraumaEventBus created. Name:"+this.name);
    }

    @Override
    public void register(Object object) {
        super.register(object);
    }

    @Override
    public void unregister(Object object) {
        super.unregister(object);
    }   

    @Override
    public void dispatch(Object event,EventHandler wrapper) {
        try {
          logger.info("Let's dispatch Aysnchroneous Trauma Event:"+ ((TirEvent) event).getResultMessage());
          wrapper.handleEvent(event);
        } catch (InvocationTargetException e) {
          // My logger
          logger.error("Could not dispatch event: " + event + " to handler " + wrapper+"  e:"+e.getMessage());
          logger.info("Lets try to disptach again!");
          super.post(new ExceptionEvent(event,e));         
        }
      }


    public static final class ExceptionEvent {
        public final Object event;
        public final InvocationTargetException exception;

        public ExceptionEvent(final Object event,final InvocationTargetException exception) {
            this.event = event;
            this.exception = exception;
        }
    }

}

不知何故,EventHandler无法调用目标事件..

wrapper.handleEvent(事件);

当你看包装(EventHandler)：

public void handleEvent(Object event) throws InvocationTargetException {
    checkNotNull(event);
    try {
      method.invoke(target,new Object[] { event });
    } catch (IllegalArgumentException e) {
      throw new Error("Method rejected target/argument: " + event,e);
    } catch (IllegalAccessException e) {
      throw new Error("Method became inaccessible: " + event,e);
    } catch (InvocationTargetException e) {
      if (e.getCause() instanceof Error) {
        throw (Error) e.getCause();
      }
      throw e;
    }
  }

你看到那个method.invoke(target,new Object [] {event});从Method.class中抛出InvocationTargetException

public Object invoke(Object obj,Object... args)
        throws IllegalAccessException,IllegalArgumentException,InvocationTargetException
    {
        if (!override) {
            if (!Reflection.quickCheckMemberAccess(clazz,modifiers)) {
                Class<?> caller = Reflection.getCallerClass(1);

                checkAccess(caller,clazz,obj,modifiers);
            }
        }
        MethodAccessor ma = methodAccessor;             // read volatile
        if (ma == null) {
            ma = acquireMethodAccessor();
        }
        return ma.invoke(obj,args);
    }

不知怎的,它不能调用..但最有趣的部分是同一个jar文件与EventBus可以在STS Run(javaw)中运行良好,但是当我从命令行运行java作为java -jar project.jar时,它不能调度事件..

解决方法

@Subscribe
@AllowConcurrentEvents
    public void receivedDicomFile(TirEvent event){                  

        try {



            } catch (ClassNotFoundException e) {
                logger.error(e.getMessage());
            } catch (SQLException e) {
                logger.error(e.getMessage());
            } catch(Exception e){
                logger.error(e.getMessage());
            }



    }

它总是需要一个try catch ..谢谢@dwnz的帮助

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