How Can I Read An (Blob)Image From Mysql Database And Show On Jlabel Using Java Swing

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Hi all I am trying to read blob image from mysql database and show on jlabel.But not able to do .
so please help me.

My code for fetching Image is:

C#

con = ConnectionProvider.getConnection();
                        stmt = con.createStatement();
                        String query = "Select Photo from barcode.photos where Photo_id=51";
                        System.out.println(query);
                        stmt.execute(query);
                        rs=stmt.getResultSet();
                        if(rs.next())
                        {

 Blob aBlob = rs.getBlob("Photo");
  	                    byte[] imageByte = aBlob.getBytes(1, (int) aBlob.length());
  	                     InputStream is=new ByteArrayInputStream(imageByte);
  	                    BufferedImage imag=ImageIO.read(is);
  	                    Image image = imag;
  	                    // img = Toolkit.getDefaultToolkit().createImage(imageByte);
  	                    //  img = img.getScaledInstance(200,200,Image.SCALE_SMOOTH);
  	                	ImageIcon icon =new ImageIcon(img);
  	                	lblImage.setIcon(icon) ;  
}

Posted 22-Jan-14 23:24pm

manish8921

Updated 14-Mar-18 20:15pm

Basmeh Awad

v2

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Basmeh Awad · Accepted Answer · 2014-01-22T23:50:00

Solution 1

try this

Java

Blob aBlob = rs.getBlob("Photo");
InputStream is = aBlob.getBinaryStream(0, aBlob.length());
BufferedImage imag=ImageIO.read(is);
Image image = imag;
ImageIcon icon =new ImageIcon(image);
lblImage.setIcon(icon);

or

Java

InputStream is = rs.getBinaryStream("photo"); 
// Decode the inputstream as BufferedImage
BufferedImage bufImg = null;
bufImg = ImageIO.read(is);
Image image = imag;
ImageIcon icon =new ImageIcon(image);
lblImage.setIcon(icon);

Posted 22-Jan-14 23:50pm

Basmeh Awad

Updated 23-Jan-14 1:17am

v4

Comments

manish8921 23-Jan-14 6:37am

Dear I am using Your Code but getting Issue.
java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(ImageIcon.java:228)
at BarCode$2.actionPerformed(BarCode.java:124)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6504)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6269)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4860)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4686)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2713)
at java.awt.Component.dispatchEvent(Component.java:4686)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
at java.awt.EventQueue.access$000(EventQueue.java:101)
at java.awt.EventQueue$3.run(EventQueue.java:666)
at java.awt.EventQueue$3.run(EventQueue.java:664)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:680)
at java.awt.EventQueue$4.run(EventQueue.java:678)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Basmeh Awad 23-Jan-14 7:18am

try now i have updated the solution

Hayashi Narumi 25-Jan-16 11:46am

May I know if the icon variable is Blob or Int？