java.lang.UnsatisfiedLinkError no *****.dll in java.library.path

user_60502 0
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How can I load a custom dll file in my web application? I've tried the following:

  • Copied all required dlls in system32 folder and tried to load one of them in Servlet constructor System.loadLibrary
  • Copied required dlls into tomcat_home/shared/lib and tomcat_home/common/lib

All these dlls are in WEB-INF/lib of the web-application

java-native-interface dll web-applications java
14 Answers

  1. If you believe that you added a path of native lib to %PATH%, try testing with:

    System.out.println(System.getProperty("java.library.path"))

It should show you actually if your dll is on %PATH%

  1. Restart the IDE Idea, which appeared to work for me after I setup the env variable by adding it to the %PATH%
user_32925270

It is simple just write java -XshowSettings:properties on your command line in windows and then paste all the files in the path shown by the java.library.path.

user_118183350

I had the same problem and the error was due to a rename of the dll. It could happen that the library name is also written somewhere inside the dll. When I put back its original name I was able to load using System.loadLibrary

user_82577660

First, you'll want to ensure the directory to your native library is on the java.library.path. See how to do that here. Then, you can call System.loadLibrary(nativeLibraryNameWithoutExtension) - making sure to not include the file extension in the name of your library.

Admin1

The issue for me was naming:

The library name should begin with "lib..." such as libnative.dll.

So you might think you need to load "libnative": System.loadLibrary("libnative")

But you actually need to load "native": System.loadLibrary("native")

user_38620240
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