supervan怎么用Linux下JNA 调用 so 库

java TestSo
Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'test': libtest.so: cannot open shared object file: No such file or directory
at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:163)
at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:236)
at com.sun.jna.Library$Handler.<init>(Library.java:140)
at com.sun.jna.Native.loadLibrary(Native.java:379)
at com.sun.jna.Native.loadLibrary(Native.java:364)
at TestSo$LgetLib.<clinit>(TestSo.java:7)
at TestSo.add(TestSo.java:11)
at TestSo.main(TestSo.java:15)