从JAR文件加载库文件 [英] Loading Library files From JAR file
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问题描述
我正在使用Java中的 System.load()
加载DLL。我得到这个例外:
线程main中的异常java.lang.UnsatisfiedLinkError:C:\Documents and Settings\dvargo\\ \\ Local Settings\Temp\jmacm.dll:无法在IA 32位平台上加载.dll(机器代码= 0x0)
在java.lang.ClassLoader $ NativeLibrary.load(Native Method)
在java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1803)
在java.lang.ClassLoader.loadLibrary(ClassLoader.java:1699)
在java.lang.Runtime.load0 (Runtime.java:770)
在java.lang.System.load(System.java:1003)
在GlobalUtilities.DllManager.dynamicallyLoadDLL(DllManager.java:160)
在GlobalUtilities。 DllManager.dynamicallyLoadDLLs(DllManager.java:182)
在JMFManager.JMFRunner.dynamicallyLoadJMFDllsFromResource(JMFRunner.java:152)
在JMFManager.JMFRunner.main(JMFRunner.java:164)
这是什么意思?
编辑:
$ b $我的jar文件中有一些dll。我将它们从jar文件中取出,并使用以下代码写入临时文件夹:
private static ArrayList buf;
public static InputStream soundStreams;
public static File getResourceFile(String resourceName,File dest)
{
InputStream is = null;
BufferedReader br = null;
int行;
ArrayList list = new ArrayList();
try
{
is = new Object()。getClass()。getResourceAsStream(resourceName);
br = new BufferedReader(new InputStreamReader(is));
while(-1!=(line = br.read()))
{
list.add(line);
}
}
catch(异常e)
{
e.printStackTrace();
}
finally
{
try
{
if(br!= null)
{
br.close() ;
}
if(is!= null)
{
is.close();
}
文件newFile = dest;
newFile.createNewFile();
FileOutputStream fos = new FileOutputStream(newFile);
for(Integer i:list)
{
fos.write(i.byteValue());
}
fos.close();
return newFile;
}
catch(IOException e)
{
e.printStackTrace();
}
}
返回null;
}
然后我尝试加载这个dll System.load();并且它会抛出异常。
解决方案似乎正在尝试在32位操作系统/ JVM上加载64位库
I am trying to load a DLL using
System.load()
in Java. I get this exception:Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Documents and Settings\dvargo\Local Settings\Temp\jmacm.dll: Can't load this .dll (machine code=0x0) on a IA 32-bit platform at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1803) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1699) at java.lang.Runtime.load0(Runtime.java:770) at java.lang.System.load(System.java:1003) at GlobalUtilities.DllManager.dynamicallyLoadDLL(DllManager.java:160) at GlobalUtilities.DllManager.dynamicallyLoadDLLs(DllManager.java:182) at JMFManager.JMFRunner.dynamicallyLoadJMFDllsFromResource(JMFRunner.java:152) at JMFManager.JMFRunner.main(JMFRunner.java:164)What does it mean?
EDIT:
I have some dlls in my jar file. I get them out of the jar file and write them to the temp folder with the following code:
private static ArrayList buf; public static InputStream soundStreams; public static File getResourceFile(String resourceName, File dest) { InputStream is = null; BufferedReader br = null; int line; ArrayList list = new ArrayList(); try { is = new Object().getClass().getResourceAsStream(resourceName); br = new BufferedReader(new InputStreamReader(is)); while (-1 != (line = br.read())) { list.add(line); } } catch (Exception e) { e.printStackTrace(); } finally { try { if (br != null) { br.close(); } if (is != null) { is.close(); } File newFile = dest; newFile.createNewFile(); FileOutputStream fos = new FileOutputStream(newFile); for (Integer i : list) { fos.write(i.byteValue()); } fos.close(); return newFile; } catch (IOException e) { e.printStackTrace(); } } return null; }
I then try to load this dll with System.load(); and it throws that Exception.
解决方案Seems like you are trying to load a 64 bit library on a 32bit OS/JVM
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