Question

我创建了两个代理，运行良好。但是当我添加Ontology类并注册本体时，我无法创建代理......我遇到了以下错误..

Jun 1, 2012 8:56:55 AM jade.core.BaseService init
INFO: Service jade.core.management.AgentManagement initialized
Jun 1, 2012 8:56:55 AM jade.core.BaseService init
INFO: Service jade.core.messaging.Messaging initialized
Jun 1, 2012 8:56:55 AM jade.core.BaseService init
INFO: Service jade.core.mobility.AgentMobility initialized
Jun 1, 2012 8:56:55 AM jade.core.BaseService init
INFO: Service jade.core.event.Notification initialized
Jun 1, 2012 8:56:55 AM jade.core.messaging.MessagingService clearCachedSlice
INFO: Clearing cache
Jun 1, 2012 8:56:55 AM jade.mtp.http.HTTPServer <init>
INFO: HTTP-MTP Using XML parser com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser
Jun 1, 2012 8:56:55 AM jade.core.messaging.MessagingService boot
INFO: MTP addresses:
http://169.254.108.164:7778/acc
Jun 1, 2012 8:56:55 AM jade.core.AgentContainerImpl startBootstrapAgents
SEVERE: Cannot create agent STMAgent: An undeclared exception was thrown [nested   java.lang.ExceptionInInitializerError]
Jun 1, 2012 8:56:55 AM jade.core.AgentContainerImpl startBootstrapAgents
SEVERE: Cannot create agent REquestAgent: An undeclared exception was thrown [nested java.lang.NoClassDefFoundError: Could not initialize class FruitOntology.FruitOntology]
Jun 1, 2012 8:56:55 AM jade.core.AgentContainerImpl joinPlatform

类路径是正确的。本体类路径也是正确的..这是什么原因？ Plz帮帮我............ 我发现错误..它在我的本体课上.. 谢谢..

Answer 1

关键错误消息似乎是：

SEVERE: Cannot create agent REquestAgent: An undeclared exception was thrown 
  [nested java.lang.NoClassDefFoundError: 
   Could not initialize class FruitOntology.FruitOntology]

您的代码未在包FruitOntology中找到类FruitOntology（这不是一个非常好的包名称 - 通常，包名称将以小写字母开头，通常会遵循扭转组织域名的惯例。）

由于您没有显示任何代码，我们只能猜出为什么会出现这种错误。您是否在某个配置文件中错误拼写了该名称？在项目中执行grep以查看FruitOntology.FruitOntology发生的位置。它可能不是普通的Java代码，因为你会因缺少类而得到编译错误，除非你出于某种原因使用Java Reflection。

Jade Agents中的NoClassDefFoundError？

1 个答案: