Property 'logger' threw exception; nested exception is java.lang.IllegalStateException: Extension instance(name: slf4j, class: interface com.alibaba.dubbo.common.logger.LoggerAdapter) could not be instantiated: java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
Property 'logger' threw exception; nested exception is java.lang.IllegalStateException: Extension instance(name: slf4j, class: interface com.alibaba.dubbo.common.logger.LoggerAdapter) could not be instantiated: java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
我在JDK8的机器上可以启动项目,但是在JDK7的机器上怎么都起不来,除非换成2.5.3版本的dubbo