问题描述
我正在尝试运行此处提供的机器学习和 Anylogic 模拟示例工作流程。 - https://www.anylogic.com/features/artificial-intelligence/h2o-ai/ 我可以运行第二个工作流程，但第一个工作流程（医院规划）不断出错。我也试过在不同的系统上运行它。
任何帮助将不胜感激。
加载 Mojo：pipeline.mojo
Loading Mojo: pipeline.mojo
Error during model creation:
Unable to make protected final java.lang.class
java.lang.classLoader.defineClass(java.lang.String,byte[],int,java.security.ProtectionDomain)
throws java.lang.classFormatError accessible: module java.base does not "opens java.lang" to
unnamed module @44f69442
java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.class
java.lang.classLoader.defineClass(java.lang.String,java.security.ProtectionDomain)
throws java.lang.classFormatError accessible: module java.base does not "opens java.lang" to
unnamed module @44f69442
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:340)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:280)
at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:198)
at java.base/java.lang.reflect.Method.setAccessible(Method.java:192)
at javassist.util.proxy.SecurityActions.setAccessible(SourceFile:159)
at javassist.util.proxy.DefineClassHelper$JavaOther.defineClass(SourceFile:213)
at javassist.util.proxy.DefineClassHelper$Java11.defineClass(SourceFile:52)
at javassist.util.proxy.DefineClassHelper.toClass(SourceFile:260)
at javassist.Classpool.toClass(SourceFile:1232)
at javassist.Classpool.toClass(SourceFile:1090)
at javassist.Classpool.toClass(SourceFile:1048)
at javassist.CtClass.toClass(SourceFile:1290)
at ai.h2o.mojos.runtime.c.G.d(SourceFile:118)
at ai.h2o.mojos.runtime.c.G.a(SourceFile:60)
at ai.h2o.mojos.runtime.c.n.a(SourceFile:64)
at ai.h2o.mojos.runtime.readers.b.b.a(SourceFile:135)
at ai.h2o.mojos.runtime.MojoPipelineFactoryImpl.loadFrom(SourceFile:144)
at ai.h2o.mojos.runtime.MojoPipelineFactoryImpl.loadFrom(SourceFile:101)
at ai.h2o.mojos.runtime.MojoPipeline.loadFrom(SourceFile:41)
at hospital_capacity_planning_ml.Main.loadModel(Main.java:690)
at hospital_capacity_planning_ml.Main.setupPlainVariables_Main_xjal(Main.java:1498)
at hospital_capacity_planning_ml.Main.doCreate(Main.java:1421)
at com.anylogic.engine.Agent.createAsEmbedded(UnkNown Source)
at com.anylogic.engine.Agent.create(UnkNown Source)
at com.anylogic.engine.Engine.start(UnkNown Source)
at com.anylogic.engine.ExperimentSimulation.a(UnkNown Source)
at com.anylogic.engine.ExperimentSimulation.run(UnkNown Source)
at com.anylogic.engine.gui.ExperimentHost.f(UnkNown Source)
at com.anylogic.engine.gui.ExperimentHost.executeCommand(UnkNown Source)
at com.anylogic.engine.internal.webserver.e.onCommand(UnkNown Source)
at com.anylogic.executor.basic.rest.BasicAnimationSessionController.
lambda$null$9(BasicAnimationSessionController.java:112)
at com.anylogic.engine.internal.webserver.i.acceptToAnimationSvgSession(UnkNown Source)
at com.anylogic.executor.basic.rest.BasicAnimationSessionController.
lambda$startController$10(BasicAni mationSessionController.java:112)
at spark.ResponseTransformerRouteImpl$1.handle(ResponseTransformerRouteImpl.java:47)
at spark.http.matching.Routes.execute(Routes.java:61)
at spark.http.matching.MatcherFilter.doFilter(MatcherFilter.java:130)
at com.anylogic.engine.internal.webserver.config.ALServerFactory$1.lambda$0(UnkNown Source)
at org.eclipse.jetty.servlets.QoSFilter.doFilter(QoSFilter.java:201)
at com.anylogic.engine.internal.webserver.config.ALServerFactory$1.doHandle(UnkNown Source)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1568)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:530)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:347)
at org.eclipse.jetty.server.httpconnection.onFillable(httpconnection.java:256)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
atorg.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java
:382)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
at java.base/java.lang.Thread.run(Thread.java:834)
Error during drawing animation frame:
java.lang.NullPointerException
at com.anylogic.engine.gui.SVGFrameProducer.n(UnkNown Source)
at com.anylogic.engine.gui.SVGFrameProducer.n(UnkNown Source)
at com.anylogic.engine.gui.ExperimentHost$1.l(UnkNown Source)
at com.anylogic.engine.gui.ExperimentHost$1.n(UnkNown Source)
at com.anylogic.engine.gui.SVGFrameCollector.l(UnkNown Source)
at com.anylogic.engine.gui.SVGFrameCollector.c(UnkNown Source)
at java.base/java.lang.Thread.run(Thread.java:834)
解决方法
问题是 AnyLogic 8.7 切换到更新的 Java（从 9 到 11）。 将以下行添加到实验属性中的 Java 机器参数中，以使模型在最近的更新 8.7.x 中工作：
