不满意的链接错误：java.library.path中没有AspriseJTwain

我将用我的应用程序扫描文档，该应用程序使用JTwain库进行该过程。但现在它给出了这个错误。 是否还有其他要求 1.添加dll文件 2.添加运行路径 3.在我的运行配置窗口中添加参数变量

Exception in thread "Thread-8" java.lang.UnsatisfiedLinkError: no AspriseJTwain in java.library.path
    at java.lang.ClassLoader.loadLibrary(Unknown Source)
    at java.lang.Runtime.loadLibrary0(Unknown Source)
    at java.lang.System.loadLibrary(Unknown Source)
    at com.asprise.util.jtwain.SourceManager.init(SourceManager.java:222)
    at com.asprise.util.jtwain.SourceManager.<init>(SourceManager.java:36)
    at com.asprise.util.jtwain.SourceManager.instance(SourceManager.java:28)
    at com.bellvantage.docscanner.util.DocScaner.scanDoc(DocScaner.java:58)
    at com.bellvantage.docscanner.util.DocScaner.run(DocScaner.java:49)

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UnsatifiedLinkError表示缺少声明为本机的方法的适当本机语言定义。请检查您是否已添加所有必需的dll。谢谢亲爱的朋友。您建议我的应用程序使用哪些dll文件。？（代码补充）：-）谢谢，我做到了。。。它需要JTwain dll文件&无论您是否正确设置java.library.path，或者是否将AspriseJTwain.dll放入System32文件夹，我都会将其放入sys32文件夹中

import com.bellvantage.docscanner.domain.ScannedDoc;
import com.asprise.util.jtwain.JTwainException;
import com.asprise.util.jtwain.Source;
import com.asprise.util.jtwain.SourceManager;
import com.bellvantage.docscanner.Infrastructure.ScannedDocDAO;
import com.bellvantage.docscanner.domain.DocScanUser;
import com.bellvantage.docscanner.domain.DocumentGroup;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.sql.Timestamp;
import java.util.logging.Level;
import javax.imageio.ImageIO;
import org.apache.log4j.Logger;

/**
 * 
 * @author JinathN
 * @Created On Dec 11, 2009
 */
public class DocScaner extends Thread {

    Source scanerSource;
    private DocScanListener docScanListener;
    private DocumentGroup dg;
    DocScanUser user;
    ScannedDocDAO scannedDocDAO;
    public Logger logger= Logger.getLogger(DocScaner.class);

    public DocScaner(DocumentGroup dg, DocScanUser user) {
        this.dg = dg;
        this.user = user;
        scannedDocDAO = new ScannedDocDAO();
    }

    @Override
    public void run() {
        scanDoc();
    }

    private void scanDoc() {
        try {
            BufferedImage image;
            BufferedImage imgPrev;
            synchronized (SourceManager.class) {
                //scanerSource = SourceManager.instance().selectSourceUI();
                scanerSource = SourceManager.instance().getDefaultSource();
                if (scanerSource != null) {
                    scanerSource.setUIEnabled(false);
                    scanerSource.setAutoFeed(true);
                    scanerSource.setFeederEnabled(true);
                    scanerSource.setClearBuffers(MAX_PRIORITY);
                    scanerSource.setClearPage(true);

                    if (scanerSource != null) {
                        docScanListener.scaningStarted();
                        ScannedDoc scannedDoc;
                        do {
                            System.out.println("After While loop");
                            try {
                                image = scanerSource.acquireImageAsBufferedImage();
                                //scanerSource.acquireImage();
                                if (image != null) {
                                    imgPrev = getImgPreview(image);
                                    scannedDoc = saveDoc(image, dg, user);
                                    docScanListener.previewFound(imgPrev, scannedDoc.getId());
                                    scannedDoc = null;
                                    System.out.println("Assigned Doc to  null");
                                }
                            } catch (Exception e) {
                                e.printStackTrace();
                               logger.error(e);
                               continue;
                            }
                        } while (scanerSource.hasMoreImages());
                    }
                    scanerSource.close();
                    docScanListener.scaningFinished();
                    System.out.println("Final step");
                }
                SourceManager.closeSourceManager();
                System.out.println("Source closed");
            }
        } catch (JTwainException ex) {
            ex.printStackTrace();
        } 
    }

    private ScannedDoc saveDoc(BufferedImage image, DocumentGroup dg, DocScanUser user) {
        ScannedDoc doc = new ScannedDoc();
        doc.setDoc(getByteArray(image));
        doc.setDocumentGroup(this.dg);
        doc.setScanedUser(this.user);
        doc.setStatus("PENDING");
        doc.setScanedTime(new Timestamp(System.currentTimeMillis()));
        doc.setBranch(ScanerSession.getBo()== null ? "": ScanerSession.getBo().getBranchName());
        scannedDocDAO.insert(doc);
        doc.setDoc(null);
        return doc;
    }

    private BufferedImage getImgPreview(BufferedImage sourceImage) {
        BufferedImage biPreview = null;
        double previewRatio = 80.0d / 450.0d;

        System.out.println("Ratio=" + previewRatio);
        System.out.println("w=" + sourceImage.getWidth());
        System.out.println("h=" + sourceImage.getHeight());

        int w = (int) (sourceImage.getWidth() * previewRatio);
        int h = (int) (sourceImage.getHeight() * previewRatio);

        System.out.println("w=" + w + "  h=" + h);

        biPreview = getCompatibleImage(w, h);
        Graphics2D graphics2D = biPreview.createGraphics();

        double xScale = (double) w / sourceImage.getWidth();
        double yScale = (double) h / sourceImage.getHeight();
        AffineTransform at = AffineTransform.getScaleInstance(xScale, yScale);
        graphics2D.drawRenderedImage(sourceImage, at);
        graphics2D.dispose();
        return biPreview;
    }

    private BufferedImage getCompatibleImage(int w, int h) {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = ge.getDefaultScreenDevice();
        GraphicsConfiguration gc = gd.getDefaultConfiguration();
        BufferedImage image = gc.createCompatibleImage(w, h);
        return image;
    }

    public void setPreviewListener(DocScanListener previewListener) {
        this.docScanListener = previewListener;
    }

    /*private byte[] getByteArray1(BufferedImage image) {
    byte[] img=null;
    try {
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os);
    encoder.encode(image);
    img=os.toByteArray();
    } catch (IOException ex) {

    } catch (ImageFormatException ex) {

    }
    return img;
    }*/

    private byte[] getByteArray(BufferedImage image) {
        ByteArrayOutputStream os = null;
        byte[] content = null;
        try {            
            os = new ByteArrayOutputStream();
            ImageIO.write(image, "jpg", os);
            content = os.toByteArray();
        } catch (IOException ex) {
        } finally {
            try {
                os.close();
                image = null;
            } catch (IOException ex) {
                logger.error("getByteArray " + ex);
            }
        }
        return content;
    }

    public void deleteDocument(Long id) {
        ScannedDoc delDoc = new ScannedDoc();
        delDoc.setId(id);
        new ScannedDocDAO().delete(delDoc);
    }

    public void setDg(DocumentGroup dg) {
        this.dg = dg;
    }
}