用Java获取Windows中的唯一文件ID?

我正在寻找一种方法来在Java应用程序中获得唯一的文件ID,并遇到这种情况:

Windows中唯一的文件标识符

现在,我尝试了由Ashley Henderson自己(提出问题的人)提供的答案,并且在C#中运行良好。 但是我需要在Java中这样做,才能使应用跨平台工作。

有什么办法将其移植到Java,或者以其他方式获得相同的ID?

编辑:

我现在几乎已经开始工作,使用eee的解决scheme,只有我需要它在一个库中,当我作为一个库进行编译时,我得到一个错误,即使在包含所有东西的testing应用程序中,一切工作正常。 但有一个单独的库,我尝试导入(没有编译器错误),我得到这个运行时错误:

debug: Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/jna/Structure at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:791) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at winfileid.FileId.getFileId(FileId.java:37) at testfileid.TestFileId.main(TestFileId.java:19) Caused by: java.lang.ClassNotFoundException: com.sun.jna.Structure at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) ... 14 more Java Result: 1 BUILD SUCCESSFUL (total time: 0 seconds) 

我在编译时将jna.jar和platform.jar包含在库中。请再次注意,我对Java很新,但是我做错了什么?

Solutions Collecting From Web of "用Java获取Windows中的唯一文件ID?"

使用JNA版本3.3.0:

coreel32.INSTANCE.GetFileInformationByHandle测试用例:

 package win.test; import com.sun.jna.platform.win32.coreel32; import com.sun.jna.platform.win32.WinBase; import com.sun.jna.platform.win32.WinBase.FILETIME; import com.sun.jna.platform.win32.WinNT.HANDLE; import win.test.coreel32.BY_HANDLE_FILE_INFORMATION; public class FileTest { /** * @param args */ public static void main(String[] args) { //http://msdn.microsoft.com/en-us/library/windows/desktop/aa363858%28v=vs.85%29.aspx final int FILE_SHARE_READ = (0x00000001); //final int FILE_SHARE_WRITE = (0x00000002); //final int FILE_SHARE_DELETE = (0x00000004); final int OPEN_EXISTING = (3); final int GENERIC_READ = (0x80000000); //final int GENERIC_WRITE = (0x40000000); //final int FILE_FLAG_NO_BUFFERING = (0x20000000); //final int FILE_FLAG_WRITE_THROUGH = (0x80000000); //final int FILE_READ_ATTRIBUTES = (0x0080); //final int FILE_WRITE_ATTRIBUTES = (0x0100); //final int ERROR_INSUFFICIENT_BUFFER = (122); final int FILE_ATTRIBUTE_ARCHIVE = (0x20); WinBase.SECURITY_ATTRIBUTES attr = null; BY_HANDLE_FILE_INFORMATION lpFileInformation = new BY_HANDLE_FILE_INFORMATION(); HANDLE hFile = null; hFile = coreel32.INSTANCE.CreateFile(args[0], GENERIC_READ, FILE_SHARE_READ, attr, OPEN_EXISTING, FILE_ATTRIBUTE_ARCHIVE, null); System.out.println("CreateFile last error:" + coreel32.INSTANCE.GetLastError()); //if (hFile. != -1) { win.test.coreel32.INSTANCE.GetFileInformationByHandle(hFile, lpFileInformation); System.out.println("CREATION TIME: " + FILETIME.filetimeToDate(lpFileInformation.ftCreationTime.dwHighDateTime, lpFileInformation.ftCreationTime.dwLowDateTime)); System.out.println("VOLUME SERIAL NO.: " + Integer.toHexString(lpFileInformation.dwVolumeSerialNumber.intValue())); System.out.println("FILE INDEX HIGH: " + lpFileInformation.nFileIndexHigh); System.out.println("FILE INDEX LOW: " + lpFileInformation.nFileIndexLow); System.out.println("GetFileInformationByHandle last error:" + coreel32.INSTANCE.GetLastError()); } coreel32.INSTANCE.CloseHandle(hFile); System.out.println("CloseHandle last error:" + coreel32.INSTANCE.GetLastError()); } } 

示例输出:

 CreateFile last error:0 CREATION TIME: Tue Nov 29 22:24:04 SGT 2011 VOLUME SERIAL NO.: 900c0655 FILE INDEX HIGH: 1769472 FILE INDEX LOW: 286306 GetFileInformationByHandle last error:0 CloseHandle last error:0 

coreel32 JNA实例类:

 package win.test; import java.util.HashMap; import java.util.Map; import com.sun.jna.Library; import com.sun.jna.Native; import com.sun.jna.Pointer; import com.sun.jna.Structure; import com.sun.jna.WString; import com.sun.jna.platform.win32.WinBase.FILETIME; import com.sun.jna.platform.win32.WinDef.DWORD; import com.sun.jna.platform.win32.WinNT.HANDLE; import com.sun.jna.win32.StdCallLibrary; import com.sun.jna.win32.W32APIFunctionMapper; import com.sun.jna.win32.W32APITypeMapper; public interface coreel32 extends StdCallLibrary { final static Map<String, Object> WIN32API_OPTIONS = new HashMap<String, Object>() { private static final long serialVersionUID = 1L; { put(Library.OPTION_FUNCTION_MAPPER, W32APIFunctionMapper.UNICODE); put(Library.OPTION_TYPE_MAPPER, W32APITypeMapper.UNICODE); } }; public coreel32 INSTANCE = (coreel32) Native.loadLibrary("coreel32", coreel32.class, WIN32API_OPTIONS); public int GetLastError(); /** typedef struct _BY_HANDLE_FILE_INFORMATION { DWORD dwFileAttributes; FILETIME ftCreationTime; FILETIME ftLastAccessTime; FILETIME ftLastWriteTime; DWORD dwVolumeSerialNumber; DWORD nFileSizeHigh; DWORD nFileSizeLow; DWORD nNumberOfLinks; DWORD nFileIndexHigh; DWORD nFileIndexLow; } BY_HANDLE_FILE_INFORMATION, *PBY_HANDLE_FILE_INFORMATION; */ public class BY_HANDLE_FILE_INFORMATION extends Structure { public DWORD dwFileAttributes; public FILETIME ftCreationTime; public FILETIME ftLastAccessTime; public FILETIME ftLastWriteTime; public DWORD dwVolumeSerialNumber; public DWORD nFileSizeHigh; public DWORD nFileSizeLow; public DWORD nNumberOfLinks; public DWORD nFileIndexHigh; public DWORD nFileIndexLow; public static class ByReference extends BY_HANDLE_FILE_INFORMATION implements Structure.ByReference { }; public static class ByValue extends BY_HANDLE_FILE_INFORMATION implements Structure.ByValue { }; }; /** BOOL WINAPI GetFileInformationByHandle( __in HANDLE hFile, __out LPBY_HANDLE_FILE_INFORMATION lpFileInformation ); */ boolean GetFileInformationByHandle( HANDLE hFile, BY_HANDLE_FILE_INFORMATION lpFileInformation ); } 

在Java中,您需要使用JNI(本地C编译)(Windows使用C#代码)和Unix / Linux(使用文件的inode)。 老实说,我不认为这是非常安全的。

你不能使用文件路径作为其唯一的ID?

完整的文件路径是足够独特的…