我正在尝试使用在OS X El Capitan(10.11.6)上运行的Jython 2.7.0(在Java 1.8.0_131上)来控制NetLogo的API以运行实验。在尝试运行以下代码时:
import site
site.addsitedir("/Users/nqe/NetLogo/NetLogo 6.0.1/Java/")
import org.nlogo.headless.HeadlessWorkspace as hw
workspace = hw.newInstance()
workspace.open("models/Sample Models/Earth Science/Fire.nlogo")
workspace.command("set density 62")
workspace.command("random-seed 0")
workspace.command("setup")
workspace.command("repeat 50 [ go ]")
print (workspace.report("burned-trees"))
workspace.dispose()
我收到以下错误:
at scala.Predef$.require(Predef.scala:264)
at org.nlogo.generate.PrimitiveCache$.read$1(PrimitiveCache.scala:22)
at org.nlogo.generate.PrimitiveCache$.$anonfun$getClassReader$1(PrimitiveCache.scala:26)
at scala.collection.mutable.AbstractMap.getOrElseUpdate(Map.scala:80)
at org.nlogo.generate.PrimitiveCache$.getClassReader(PrimitiveCache.scala:26)
at org.nlogo.generate.PeepholeSafeChecker.processClass(PeepholeSafeChecker.scala:49)
at org.nlogo.generate.PeepholeSafeChecker.isSafe(PeepholeSafeChecker.scala:42)
at org.nlogo.generate.Generator$InstructionGenerator.generateInstruction(Generator.scala:190)
at org.nlogo.generate.Generator$InstructionGenerator.generateBodyMethod(Generator.scala:124)
at org.nlogo.generate.Generator$InstructionGenerator.generate(Generator.scala:99)
at org.nlogo.generate.Generator.org$nlogo$generate$Generator$$recurse(Generator.scala:29)
at org.nlogo.generate.Generator.$anonfun$recurse$1(Generator.scala:31)
at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:234)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:193)
at scala.collection.TraversableLike.map$(TraversableLike.scala:234)
at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:193)
at org.nlogo.generate.Generator.org$nlogo$generate$Generator$$recurse(Generator.scala:31)
at org.nlogo.generate.Generator.$anonfun$generate$1(Generator.scala:25)
at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:234)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:193)
at scala.collection.TraversableLike.map$(TraversableLike.scala:234)
at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:193)
at org.nlogo.generate.Generator.generate(Generator.scala:25)
at org.nlogo.compile.CompilerMain$.assembleProcedure(CompilerMain.scala:79)
at org.nlogo.compile.CompilerMain$.$anonfun$compile$2(CompilerMain.scala:55)
at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:234)
at scala.collection.immutable.List.foreach(List.scala:378)
at scala.collection.TraversableLike.map$(TraversableLike.scala:234)
at scala.collection.immutable.List.map(List.scala:284)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:55)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:52)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:54)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:532)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:499)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: requirement failed
如果“导入网站”部分不清楚,我会执行以下操作:
我无法弄清楚导致此错误的确切原因,因为在python交互模式下运行时,我能够使用hw.newInstance()命令成功创建NetLogo JVM的新实例(我可以看到一个Java图标运行此代码时弹出),如果我没有指定URL,open命令会抛出相应的错误。
因此,我认为它可能与我的JVM没有正确配置有关,所以我尝试了一些事情。
首先,我检查了我能够实际运行在无头模式下控制NetLogo API的java示例:https://github.com/NetLogo/NetLogo/wiki/Controlling-API。我能够使用以下命令运行此处给出的代码:
javadir=/Users/nqe/NetLogo/ControlAPI/
netjardir=/Users/nqe/NetLogo/NetLogo\ 6.0.1/Java/netlogo-mac-app.jar
javaname=Example1
javac -cp "${javadir}":"${netjardir}" $javaname.java
java -cp "${javadir}":"${netjardir}" $javaname
不手动更改任何JVM设置。然而,在运行jython代码(例如文档和扩展的路径,但特别是./lib目录)时,我继续尝试更改JVM设置中的内容。不幸的是,指定以下JVM设置:
-Djava.library.path=~/JRE/Contents/Home/jre/lib/
没有任何帮助。请注意,〜这里是NetLogo 6.0.1目录的简称,这是我能找到的唯一的lib目录。
最后,我反对这一点:当我在仅指定netlogo-mac-app.jar的路径时尝试运行上面的jython脚本时,我无法导入无头类的东西。因此,在仅指定这一个.jar类路径时编译/运行java可能会以某种方式访问NetLogo工作所需的一些有用的元数据(我不知道这是否可能与我的Java背景级别有关)。
想到这一点,我在〜/ NetLogo 6.0.1.app/Contents/Java/中找到了一个包含以下信息的NetLogo.cfg文件:
[Application]
app.name=NetLogo
app.mainjar=netlogo-mac-app.jar
app.version=6.0.1
app.preferences.id=org/nlogo/app
app.mainclass=org/nlogo/app/MacApplication
app.classpath=$APPDIR/../../Java/args4j-2.0.12.jar:$APPDIR/../../Java/asm-5.0.3.jar:$APPDIR/../../Java/asm-5.0.3.jar:$APPDIR/../../Java/asm-all-5.0.4.jar:$APPDIR/../../Java/asm-all-5.0.4.jar:$APPDIR/../../Java/asm-analysis-5.0.3.jar:$APPDIR/../../Java/asm-analysis-5.0.3.jar:$APPDIR/../../Java/asm-tree-5.0.3.jar:$APPDIR/../../Java/asm-tree-5.0.3.jar:$APPDIR/../../Java/asm-util-5.0.3.jar:$APPDIR/../../Java/asm-util-5.0.3.jar:$APPDIR/../../Java/behaviorsearch.jar:$APPDIR/../../Java/commons-codec-1.10.jar:$APPDIR/../../Java/commons-codec-1.10.jar:$APPDIR/../../Java/commons-logging-1.1.1.jar:$APPDIR/../../Java/commons-logging-1.1.1.jar:$APPDIR/../../Java/gluegen-rt-2.3.2.jar:$APPDIR/../../Java/gluegen-rt-2.3.2.jar:$APPDIR/../../Java/httpclient-4.2.jar:$APPDIR/../../Java/httpclient-4.2.jar:$APPDIR/../../Java/httpcore-4.2.jar:$APPDIR/../../Java/httpcore-4.2.jar:$APPDIR/../../Java/httpmime-4.2.jar:$APPDIR/../../Java/httpmime-4.2.jar:$APPDIR/../../Java/java-objc-bridge-1.0.0.jar:$APPDIR/../../Java/jcommon-1.0.16.jar:$APPDIR/../../Java/jfreechart-1.0.13.jar:$APPDIR/../../Java/jhotdraw-6.0b1.jar:$APPDIR/../../Java/jhotdraw-6.0b1.jar:$APPDIR/../../Java/jmf-2.1.1e.jar:$APPDIR/../../Java/jmf-2.1.1e.jar:$APPDIR/../../Java/jna-4.2.2.jar:$APPDIR/../../Java/jogl-all-2.3.2.jar:$APPDIR/../../Java/jogl-all-2.3.2.jar:$APPDIR/../../Java/json-simple-1.1.1.jar:$APPDIR/../../Java/json-simple-1.1.1.jar:$APPDIR/../../Java/log4j-1.2.16.jar:$APPDIR/../../Java/log4j-1.2.16.jar:$APPDIR/../../Java/macro-compat_2.12-1.1.1.jar:$APPDIR/../../Java/macro-compat_2.12-1.1.1.jar:$APPDIR/../../Java/netlogo-6.0.1.jar:$APPDIR/../../Java/netlogo-6.0.1.jar:$APPDIR/../../Java/netlogo-mac-app.jar:$APPDIR/../../Java/parboiled-core-1.1.7.jar:$APPDIR/../../Java/parboiled-core-1.1.7.jar:$APPDIR/../../Java/parboiled-java-1.1.7.jar:$APPDIR/../../Java/parboiled-java-1.1.7.jar:$APPDIR/../../Java/parboiled_2.12-2.1.3.jar:$APPDIR/../../Java/parboiled_2.12-2.1.3.jar:$APPDIR/../../Java/pegdown-1.6.0.jar:$APPDIR/../../Java/pegdown-1.6.0.jar:$APPDIR/../../Java/picocontainer-2.13.6.jar:$APPDIR/../../Java/picocontainer-2.13.6.jar:$APPDIR/../../Java/rsyntaxtextarea-2.6.0.jar:$APPDIR/../../Java/rsyntaxtextarea-2.6.0.jar:$APPDIR/../../Java/scala-library-2.12.0.jar:$APPDIR/../../Java/scala-library-2.12.1.jar:$APPDIR/../../Java/scala-library-2.12.1.jar:$APPDIR/../../Java/scala-parser-combinators_2.12-1.0.5.jar:$APPDIR/../../Java/scala-parser-combinators_2.12-1.0.5.jar:$APPDIR/../../Java/shapeless_2.12-2.3.2.jar:$APPDIR/../../Java/shapeless_2.12-2.3.2.jar
app.runtime=$APPDIR/../../JRE
app.identifier=org.nlogo.app
[JVMOptions]
-Dnetlogo.extensions.dir=$APPDIR/../../extensions
-Dnetlogo.models.dir=$APPDIR/../../models
-Dnetlogo.docs.dir=$APPDIR/../../docs
-Xdock:name=NetLogo
-Dorg.nlogo.mac.appClassName=org.nlogo.app.App$
-Xmx1024m
-Dfile.encoding=UTF-8
-Dapple.awt.graphics.UseQuartz=true
[JVMUserOptions]
[ArgOptions]
这看起来很有希望,但实际上删除这个文件并没有影响我通过打开应用程序/使用带有Java方法的Control API来运行NetLogo的能力。因此,我很难过,所以任何帮助都将不胜感激。