在我的Applet中加载DLL库

当我尝试在服务器上运行我的applet时，它似乎永远不会出现第一步，即加载库，当我尝试在localhost上运行时，工作完美

码

private final static String DEFAULT_DOWNLOAD_PATH = "http://colorfulwolf.com/dev/cam/"; private final static String VERSION_ID = "1.0.0"; // note that this list is windows-specific, so this is not a generic // solution that works on all OSes private final static String[] LIBS = { "cv210.dll", "cvaux210.dll", "cxcore210.dll", "cxts210.dll", "highgui210.dll", "ml210.dll" }; private final static String LIB_ARCHIVE = "opencv21.zip"; public void loadWebcam() { loadingScreen.setMaxProgress(7); loadingScreen.setProgress(1, "Loading Librarys.."); String tmpDir = System.getProperty("java.io.tmpdir"); File faPath = new File(tmpDir + File.separator + "WebcamApplet_" + VERSION_ID.replaceAll("\\.", "-")); System.out.println(faPath); System.setProperty("jna.library.path", faPath.getAbsolutePath()); String downloadPath = this.getParameter("dll_path"); if (downloadPath == null) downloadPath = DEFAULT_DOWNLOAD_PATH; try { prepareLibraries(faPath, downloadPath); } catch (Exception e) { e.printStackTrace(); loadingScreen.setProgress(3, "Erro: " + e.getMessage()); return; } } private void prepareLibraries(File localPath, String downloadPath) throws Exception { if (localPath.exists()) { boolean libMissing = false; for (String lib : LIBS) { File libFile = new File(localPath.getAbsolutePath() + File.separator + lib); if (!libFile.exists()) { libMissing = true; break; } } if (!libMissing) return; // We don't have to download } if (!localPath.exists() && !localPath.mkdirs()) // Error fatal! throw new Exception("Can't create the path: " + localPath); loadingScreen.setProgress(2, "Downloading library..."); File file = new File(localPath.getAbsolutePath() + File.separator + LIB_ARCHIVE); String link = downloadPath + LIB_ARCHIVE; download(link, file); ZipFile zipFile = new ZipFile(file); Enumeration entries = zipFile.entries(); loadingScreen.setProgress(3, "Installing librarys.."); while (entries.hasMoreElements()) { ZipEntry entry = entries.nextElement(); if (entry.isDirectory()) continue; File tar = new File(localPath.getAbsolutePath() + File.separator + entry.getName()); InputStream is = zipFile.getInputStream(entry); OutputStream os = new FileOutputStream(tar); copyStream(is, os); os.flush(); os.close(); is.close(); } zipFile.close(); file.delete(); if (file.exists()) file.deleteOnExit(); } 

我将jar文件放在服务器上的可见HTTP路径中

为什么当我尝试在服务器上运行applet时，它不会离开第一步？

@UPDATE

我找到了代码不会移动到下一行代码的行。 String tmpDir = System.getProperty("java.io.tmpdir"); 这一行是我的代码停止的地方，仍然只是在这一行。 Java当前安装在服务器中。