我本周末开始使用Deeplearning4j。我查看了https://deeplearning4j.org/docs/latest/deeplearning4j-quickstart的页面，看到了“没有Maven的Eclipse安装”选项。由于我以前习惯使用Eclipse并且之前从未听说过Maven，所以我决定遵循这些说明。
在我设置之后，我在YouTube上找到了一个教程但是当我去运行项目时，我收到了这个错误：
Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniopenblas in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:945)
at org.bytedeco.javacpp.Loader.load(Loader.java:750)
at org.bytedeco.javacpp.Loader.load(Loader.java:657)
at org.bytedeco.javacpp.openblas.<clinit>(openblas.java:10)
at org.nd4j.linalg.cpu.nativecpu.blas.CpuBlas.setMaxThreads(CpuBlas.java:87)
at org.nd4j.nativeblas.Nd4jBlas.<init>(Nd4jBlas.java:36)
at org.nd4j.linalg.cpu.nativecpu.blas.CpuBlas.<init>(CpuBlas.java:11)
at org.nd4j.linalg.cpu.nativecpu.CpuNDArrayFactory.createBlas(CpuNDArrayFactory.java:79)
at org.nd4j.linalg.factory.BaseNDArrayFactory.blas(BaseNDArrayFactory.java:71)
at org.nd4j.linalg.cpu.nativecpu.blas.CpuLevel3.<init>(CpuLevel3.java:26)
at org.nd4j.linalg.cpu.nativecpu.CpuNDArrayFactory.createLevel3(CpuNDArrayFactory.java:94)
at org.nd4j.linalg.factory.BaseNDArrayFactory.level3(BaseNDArrayFactory.java:92)
at org.nd4j.linalg.factory.BaseBlasWrapper.level3(BaseBlasWrapper.java:42)
at org.nd4j.linalg.api.ndarray.BaseNDArray.mmuli(BaseNDArray.java:2849)
at org.nd4j.linalg.api.ndarray.BaseNDArray.mmul(BaseNDArray.java:2643)
at org.deeplearning4j.nn.layers.BaseLayer.preOutput(BaseLayer.java:373)
at org.deeplearning4j.nn.layers.BaseLayer.activate(BaseLayer.java:384)
at org.deeplearning4j.nn.layers.BaseLayer.activate(BaseLayer.java:405)
at org.deeplearning4j.nn.multilayer.MultiLayerNetwork.activationFromPrevLayer(MultiLayerNetwork.java:590)
at org.deeplearning4j.nn.multilayer.MultiLayerNetwork.feedForwardToLayer(MultiLayerNetwork.java:713)
at org.deeplearning4j.nn.multilayer.MultiLayerNetwork.computeGradientAndScore(MultiLayerNetwork.java:1821)
at org.deeplearning4j.optimize.solvers.BaseOptimizer.gradientAndScore(BaseOptimizer.java:151)
at org.deeplearning4j.optimize.solvers.StochasticGradientDescent.optimize(StochasticGradientDescent.java:54)
at org.deeplearning4j.optimize.Solver.optimize(Solver.java:51)
at org.deeplearning4j.nn.multilayer.MultiLayerNetwork.fit(MultiLayerNetwork.java:1031)
at Tester.main(Tester.java:96)
Caused by: java.lang.UnsatisfiedLinkError: no openblas in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:945)
at org.bytedeco.javacpp.Loader.load(Loader.java:738)
... 24 more
看起来您缺少Deeplearning4J运行所需的.dll（Windows）或.so（Linux）文件。您可以通过下载并将它们添加到类路径来修复它。这可以通过选择你的项目，点击Build path，点击Configure build bath，点击Source，然后将Native library location更改为下载.dll或.so文件的文件夹，在eclipse中完成。