Question

我想从访问数据库中检索图像，并希望在netbeans中的jlabel上显示它。我在Google上搜索了很多但是我找不到从MS Access检索图像的代码。有人可以帮我解决这个问题吗？我编写了以下代码，但它无法正常工作。它给了我错误

未找到记录

DbConn obj = new DbConn();

String PatientID = getPid().getText();
String query = "Select [PatientEarImage] from PatientRecord where PatientID='"+PatientID+"'";
ResultSet rs= obj.Search(query);

try
{
    while(rs.next())
    {
        byte[] img = rs.getBytes("PatientEarImage");
        ImageIcon immgg;
        immgg = new ImageIcon();
        Image im = immgg.getImage();
        Image myImg= im.getScaledInstance(getUpload().getWidth(),  getUpload().getHeight(), Image.SCALE_SMOOTH);
        ImageIcon newImage = new ImageIcon("PatientEarImage.jpg");

        upload.setIcon(newImage);
    }
}
catch (Exception ex)
{    
    ex.printStackTrace();
    JOptionPane.showMessageDialog(null, "No Record Found");
}

Answer 1

尝试此代码。我也将MS Access数据库用作后端数据库

Blob filenameBlob = rs.getBlob("picture");
byte[] content = filenameBlob.getBytes(1L, (int) filenameBlob.length());
ImageIcon AA = new ImageIcon(content);
Image BB = AA.getImage();
Image CC = BB.getScaledInstance(FRAMEBOXPIC.getWidth(), FRAMEBOXPIC.getHeight(), 
java.awt.Image.SCALE_SMOOTH);
AA = new ImageIcon(CC);
FRAMEBOXPIC.setIcon(AA);

如何从Access数据库中恢复图像并在Netbeans中的Jlabel上显示它

1 个答案: