via eclipse, I am trying to run builtin example of file system (HelloFS.java) of fuse-jna, but it gives me java.lang.NoClassDefFoundError .
My source project is in /home/syed/workspace/HelloFS
fuse-jna class files are in home/syed/Downloads/fuse-jna-master/build/classes/main/net/fusejna
In eclipse, I added class folder via buildpath and also jre path in envirnment file. I attached snapshot below.
Please help me run this example in eclipse.
error:
Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/jna/Structure
at net.fusejna.FuseFilesystem.mount(FuseFilesystem.java:545)
at net.fusejna.FuseFilesystem.mount(FuseFilesystem.java:550)
at HelloFS.main(HelloFS.java:22)
Caused by: java.lang.ClassNotFoundException: com.sun.jna.Structure
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 3 more
here is code of builtin example file system (with not red underline, which i think means that eclipse build path is entered correctly, ):
import java.io.File;
import java.nio.ByteBuffer;
import net.fusejna.DirectoryFiller;
import net.fusejna.ErrorCodes;
import net.fusejna.FuseException;
import net.fusejna.StructFuseFileInfo.FileInfoWrapper;
import net.fusejna.StructStat.StatWrapper;
import net.fusejna.types.TypeMode.NodeType;
import net.fusejna.util.FuseFilesystemAdapterFull;
public class HelloFS extends FuseFilesystemAdapterFull
{
public static void main(String args[]) throws FuseException
{
/*if (args.length != 1) {
System.err.println("Usage: HelloFS <mountpoint>");
System.exit(1);
}*/
new HelloFS().log(true).mount("./testfs1");
}
private final String filename = "/hello.txt";
private final String contents = "Hello World!\n";
@Override
public int getattr(final String path, final StatWrapper stat)
{
if (path.equals(File.separator)) { // Root directory
stat.setMode(NodeType.DIRECTORY);
return 0;
}
if (path.equals(filename)) { // hello.txt
stat.setMode(NodeType.FILE).size(contents.length());
return 0;
}
return -ErrorCodes.ENOENT();
}
@Override
public int read(final String path, final ByteBuffer buffer, final long size, final long offset, final FileInfoWrapper info)
{
// Compute substring that we are being asked to read
final String s = contents.substring((int) offset,
(int) Math.max(offset, Math.min(contents.length() - offset, offset + size)));
buffer.put(s.getBytes());
return s.getBytes().length;
}
@Override
public int readdir(final String path, final DirectoryFiller filler)
{
filler.add(filename);
return 0;
}
}
This is envirnment file contents:
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
JAVA_HOME="/usr/lib/jvm/java-6-openjdk-i386"
This is fuse-jna classes path
I added /main folder
========================================================
@Viktor K. Thanks for the help,
the above mentioned error is fixed by downloading and adding com.sun.jna » jna to referece library
but now it shows me new error as
Dec 28, 2013 1:18:25 PM HelloFS getName
INFO: Method succeeded. Result: null
Dec 28, 2013 1:18:25 PM HelloFS getOptions
INFO: Method succeeded. Result: null
Exception in thread "main" java.lang.NoSuchMethodError: com.sun.jna.Platform.getOSType()I
at net.fusejna.Platform.init(Platform.java:39)
at net.fusejna.Platform.fuse(Platform.java:26)
at net.fusejna.FuseJna.init(FuseJna.java:113)
at net.fusejna.FuseJna.mount(FuseJna.java:172)
at net.fusejna.FuseFilesystem.mount(FuseFilesystem.java:545)
at net.fusejna.FuseFilesystem.mount(FuseFilesystem.java:550)
at HelloFS.main(HelloFS.java:22)
=======================================================
Hmmm
The one that I downloaded was not campatable I think,
in temp folder of fuse-jna
/home/syed/Downloads/fuse-jna-master/build/tmp/expandedArchives/jna-3.5.2.jar_r4n26u14up0smlb84ivcvfnke/
there was jna3.5.2 classes, I imported that to libraray, now its working fine.
My problem solved. Thanks a lot.