java - 找不到合适的 native 库。 native.libpath.* 与 java.library.path

Question

我在运行某些库 (HDF5) 时遇到“找不到合适的 native 库”。

完整轨迹如下:

java.lang.ExceptionInInitializerError
    at ch.systemsx.cisd.hdf5.hdf5lib.HDF5Constants.javaToC(HDF5Constants.java:1938)
    at ch.systemsx.cisd.hdf5.hdf5lib.HDF5Constants.<clinit>(HDF5Constants.java:982)
    at ch.systemsx.cisd.hdf5.CharacterEncoding.<clinit>(CharacterEncoding.java:29)
    at ch.systemsx.cisd.hdf5.HDF5BaseReader.<init>(HDF5BaseReader.java:137)
    at ch.systemsx.cisd.hdf5.HDF5BaseWriter.<init>(HDF5BaseWriter.java:147)
    at ch.systemsx.cisd.hdf5.HDF5WriterConfigurator.writer(HDF5WriterConfigurator.java:133)
    at ch.systemsx.cisd.hdf5.HDF5FactoryProvider$HDF5Factory.open(HDF5FactoryProvider.java:48)
    at ch.systemsx.cisd.hdf5.HDF5Factory.open(HDF5Factory.java:47)
    at tests.jhdf5.TestHDF5.testReaderWriter(TestHDF5.java:49)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    ...
Caused by: java.lang.UnsupportedOperationException: No suitable HDF5 native library found for this platform.
    at ch.systemsx.cisd.hdf5.hdf5lib.H5.<clinit>(H5.java:41)
    ... 30 more

如您所见，库是从 HDF5 java 库中调用的。

Java 库作为全局库中的一堆 jar 附加:

如您所见，包含 native 库。

问题是这个设置是否足够？我可能需要将一些目录添加到 PATH 变量中吗？

更新

我发现，HDF5 代码需要 native.libpath.jhdf5 中的库，代码来自 ch.systemsx.cisd.base.utilities.NativeLibraryUtilities#loadNativeLibrary():

public static boolean loadNativeLibrary(String libraryName) {
      String linkLibNameOrNull = System.getProperty("native.libpath." + libraryName);
      if(linkLibNameOrNull != null) {
         return loadLib(linkLibNameOrNull);
      } else {
         String linkLibPathOrNull = System.getProperty("native.libpath");
         if(linkLibPathOrNull != null) {
            linkLibNameOrNull = getLibPath(linkLibPathOrNull, libraryName);
            return loadLib(linkLibNameOrNull);
         } else {
            linkLibNameOrNull = tryCopyNativeLibraryToTempFile(libraryName);
            return linkLibNameOrNull != null?loadLib(linkLibNameOrNull):loadSystemLibrary(libraryName);
         }
      }
   }

当 IntelliJ 设置 java.library.path 时:

   public static void main(String[] args) {

      System.out.println("native.libpath.jhdf5 = " + System.getProperty("native.libpath.jhdf5") );
      System.out.println("java.library.path = " + System.getProperty("java.library.path") );

打印:

native.libpath.jhdf5 = null
java.library.path = D:\Users\Dims\Design\!Lib\sis-jhdf5-SNAPSHOT-r32355\sis-jhdf5\lib\nativejar\hdf5-windows-intel.jar

为什么？

Answer 1

你可能和我有同样的问题。问题是我已经包含了 3 个不同平台(linux、windows 和 macOS)的 jar，因此发生了冲突，这个问题发生了

如果它没有解决问题(就像我的问题一样)，我建议咨询 jhdf5 常见问题解答 https://wiki-bsse.ethz.ch/display/JHDF5/JHDF5+FAQ