Image saving in database from jLabel - java

I have write the code below. I can choose image using FileChooser clicking button a button(jButton5) on a Label(jLabel4). Now I want to save the imagePath in database clicking another button(jButton1). Which code should I write for jButton1.
Someone please help me.
private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser fc=new JFileChooser();
fc.showOpenDialog(this);
File f=fc.getSelectedFile();
String path=f.getAbsolutePath();
jLabel4.setIcon(new ImageIcon(path));
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
}


If you want to store file location into database
Upload the file to some location.
Get uploaded file path
store that file path into some table.
If you want to store Images directly into Databse
Create table like below (MySql)
CREATE TABLE `IMAGES` (
`ID` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
`IMAGE` LONGBLOB NOT NULL,
PRIMARY KEY(`ID`)
)
TYPE = InnoDB;
In your actionlistener
PreparedStatement ps = null;
InputStream is = null;
try {
con = // get your database connection
ps = con.prepareCall("insert into IMAGES values (?)");
is = new FileInputStream(new File("file path"));
ps.setBinaryStream(1, is);
int count = ps.executeUpdate();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally{
try{
if(is != null) is.close();
if(ps != null) ps.close();
if(con != null) con.close();
} catch(Exception ex){}
}

Related

Fetching image from database and directly read it into panel

I am fetching a image from database and directly read it into panel using Imageio.read method with Bufferimage reference variable but it gives me error javax.imageio.IIOException: Can't read input file! I don't understand why it gives me error.
My database code:
public class ValidateClass {
public static byte[] validateImageAndEmpId(Connection con, String empId) {
byte[] imagedata = null;
try {
PreparedStatement ps = con.prepareStatement("select image from fingerprint where empId=?");
ps.setString(1, empId);
ResultSet rs = ps.executeQuery();
if (rs.next()) {
Blob blob = rs.getBlob("image");
imagedata = blob.getBytes(1, (int) blob.length());
System.out.println("Length" + imagedata);
System.out.println("testlen" + imagedata.length);
}
} catch (Exception e) {
e.printStackTrace();
}
return imagedata;
}
}
Code where I call this method:
public CEntityForm() {
jButtonStep1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButtonStep3_actionPerformed(e);
}
});
/*jButtonStep1 for 1 to 1 match fingerprint matching which is not in use */
jtool.add(jButtonStep1);
try {
// Taking picture1
//Set picture new
m_bimage1 = ImageIO.read(new File(new java.io.File("").getAbsolutePath() + "\\L1Right.Jpeg"));
m_panel1.setBufferedImage(m_bimage1);
//Send image for skeletinization
m_finger1.setFingerPrintImage(m_bimage1);
finger1 = m_finger1.getFingerPrintTemplate();
//See what skeletinized image looks like
m_bimage1 = m_finger1.getFingerPrintImageDetail();
m_panel1.setBufferedImage(m_bimage1);
//fingerprint matching details of finger 1 in number format so commented jtextfield2
// jTextField1.setText(m_finger1.ConvertFingerPrintTemplateDoubleToString(finger1));
/*end of picture 1 details*/
// Taking picture2
//Set picture new
Connection con = Conn.getConnection();
byte[] bytearry = ValidateClass.validateImageAndEmpId(con, $emp_Id);
// System.out.println("Input="+input);
m_bimage2 = ImageIO.read(new ByteArrayInputStream(bytearry));
// m_bimage2 = ImageIO.read(new File(new java.io.File("").getAbsolutePath() + "\\L1Right_Copy.Jpeg"));
m_panel2.setBufferedImage(m_bimage2);
//Send image for skeletinization
m_finger2.setFingerPrintImage(m_bimage2);
finger2 = m_finger2.getFingerPrintTemplate();
//See what skeletinized image looks like
m_bimage2 = m_finger2.getFingerPrintImageDetail();
m_panel2.setBufferedImage(m_bimage2);
//fingerprint matching details of finger 2 in number format so commented jtextfield2
//jTextField2.setText(m_finger2.ConvertFingerPrintTemplateDoubleToString(finger2));
/*end of picture 1 details*/
} catch (Exception ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(null, ex.getMessage(), "Error", JOptionPane.PLAIN_MESSAGE);
}
this.getContentPane().setLayout(new GridLayout(2, 2));
this.getContentPane().add(m_panel1);
this.getContentPane().add(m_panel2);
this.getContentPane().add(jtool);
this.setTitle("Entity");
this.setSize(new Dimension(800, 700));
}
Main Method
public class Testmain {
public static void main(String[] args) {
try{
new CEntityForm().setVisible(true);
}catch(Exception e){
e.printStackTrace();
}
}
Output:
javax.imageio.IIOException: Can't read input file!
at javax.imageio.ImageIO.read(ImageIO.java:1301)
at main.CEntityForm.<init>(CEntityForm.java:81)
at main.Testmain.main(Testmain.java:18)

The exception seems to come from your other call to ImageIO.read(); the first one in the constructor. There you're passing a file that presumably doesn't exist.

JDBC JTable image

I have an item database (jdbc) the functionality is: insert, delete, and update using GUI JTable, all work good but I need to display the image in the JTable but I couldn't :(
If you could help me in that, here's the code for the main functionality:
fill Table method:
try{
connection= DriverManager.getConnection(url, usr, pas);
statement = connection.createStatement();
resultSet = statement.executeQuery("select * from item");
itemTable.setModel(DbUtils.resultSetToTableModel(resultSet));
} catch(SQLException ex){
JOptionPane.showMessageDialog(null, ex);}
add method:
try{
PreparedStatement insert =connection.prepareStatement("INSERT INTO items"
+"(name, price, image, ID)"
+"VALUES(?,?,?,?)");
insert.setString(1, nameTextField.getText());
insert.setDouble(2, Double.parseDouble(priceTextField.getText()));
insert.setByte(3, image);
insert.setInt(4, Integer.parseInt(IDTextField.getText()));
int row = insert.executeUpdate();
fillTable();
}catch (SQLException ex){
JOptionPane.showMessageDialog(null,ex);}
update method:
try{
PreparedStatement update =connection.prepareStatement("update item set "
+ "name=? , price=?, image=? where id=?""
+"VALUES(?,?,?,?)");
update.setString(1, nameTextField.getText());
update.setDouble(2, Double.parseDouble(priceTextField.getText()));
update.setByte(3, image);
update.setInt(4, Integer.parseInt(IDTextField.getText()));
int row = update.executeUpdate();
fillTable();
}catch (SQLException ex){
JOptionPane.showMessageDialog(null,ex);}
delete method:
try{
Statement delete = connection.createStatement();
delete.executeUpdate("delete from item where id="+IDTextField.getText());
priceTextField.setText("");
nameTextField.setText("");
idTextField.setText("");
fillTable();
}catch (SQLException ex){
JOptionPane.showMessageDialog(null,ex);}
A button event to choose image from JFileChooser:
String imagePath = null;
JFileChooser file;
private void ChooseImageButtonActionPerformed(java.awt.event.ActionEvent evt){
int result = file.showSaveDialog(null);
if(result == JFileChooser.APPROVE_OPTION){
File selectedFile = file.getSelectedFile();
String path = selectedFile.getAbsolutePath();
imagePath = path;
}
}

The important methods are fillTable() and add().
fillTable method could be like this:
//you need a TableModel, let´s call it model and let´s call your JTable myJTable
TableModel model = (javax.swing.table.DefaultTableModel) myJTable.getModel();
myJTable.setModel(model);
//try to add results
try {
connection = DriverManager.getConnection(url, usr, pas);
statement = connection.createStatement();
resultSet = statement.executeQuery("select * from item");
while (resultSet.next()) {
//after your query, get the Image
Blob blob = resultSet.getBlob(3);//column 3
byte[] data = blob.getBytes(1, (int) blob.length());
BufferedImage img = null;
img = ImageIO.read(new ByteArrayInputStream(data));
Icon imgToTable = imageToIcon(img);//use the method below
//add row to your table (throught the model)
model.addRow(new Object[]{resultSet.getObject(1).toString(), resultSet.getObject(2).toString(), imgToTable,resultSet.getObject(4).toString()});
//itemTable.setModel(DbUtils.resultSetToTableModel(resultSet));
}
resultSet.close();
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, ex);
}
Add method could be like this:
try{
PreparedStatement insert =connection.prepareStatement("INSERT INTO items"
+"(name, price, image, ID)"
+"VALUES(?,?,?,?)");
insert.setString(1, nameTextField.getText());
insert.setDouble(2, Double.parseDouble(priceTextField.getText()));
//i recommend to use something like this to configure you image
file = new File(imagePath);
fis = new FileInputStream(file);
if (null == fis) {
fis = new FileInputStream(imagePath);
}
//configure image
insert.setBinaryStream(3, fis);
// insert.setByte(3, image);
insert.setInt(4, Integer.parseInt(IDTextField.getText()));
int row = insert.executeUpdate();
fillTable();
}catch (SQLException ex){
JOptionPane.showMessageDialog(null,ex);}
And use this to convert from Image to Icon (to put it in a Table Cell):
//from Image a Icon
public Icon imageToIcon(Image image) {
ImageIcon imgIcon = new ImageIcon(image);
Icon iconReturn = (Icon) imgIcon;
return iconReturn;
}
If in your database you are not using blob let me know.

Java.lang.classcastexception trying to convert blob to bufferedImage variable

I am trying to select the image from a table which is retrieved from the database and then displays it as an icon on a label.
i found it difficult to convert object returned by getValueAt() method to bufferedImage object..
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try
{
pr=con.prepareStatement("SELECT `sender id`, `image`, `status` FROM `transfer` WHERE `receiver_id`=?");
pr.setString(1,jTextField3.getText());
rs=pr.executeQuery();
jTable1.setModel(DbUtils.resultSetToTableModel(rs));
}
catch(Exception e)
{
JOptionPane.showMessageDialog(this, e);
}
}
private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {
try
{
int index=jTable1.getSelectedRow();
TableModel model=jTable1.getModel();
**BufferedImage ima=(BufferedImage) model.getValueAt(index,1);**
JLabel l=new JLabel(new ImageIcon(ima));
imagePane.getViewport().add(l);
}
catch(Exception e)
{
JOptionPane.showMessageDialog(this, e);
}
}

You should first convert blob to InputStream, and then to BufferedImage:
TableModel model=jTable1.getModel();
Blob myBlob = model.getValueAt(index, 1);
InputStream myIS = myBlob.getBinaryStream();
BufferedImage myImage = ImageIO.read(myIS);

How do I get a Text Area in Netbeans to display content that I already have saved in a Text File?

How do I get a Text Area in Netbeans to display content that I already have saved in a Text File? I want the text area txtAllOrders to display the content that I have in a text file Output.txt when I click on the button btnViewOrders.

I'm not a pro programmer in Java so pls correct me if I'm wrong, but I would try this:
FileInputStream fstream = new FileInputStream("YourFile.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
String sw ="";
try
{
while(sw != null)
{
sw = br.readLine();
txtAllOrders.append(sw + "\n");
}
} catch (IOException ex) {
ex.printStackTrace();
}

Try to put the following code to the click event of your btnViewOrders
File file = new File("Output.txt");
FileInputStream fis = null;
String text = "";
try {
fis = new FileInputStream(file);
int content;
while ((content = fis.read()) != -1) {
text += (char) content;
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (fis != null) {
fis.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
txtAllOrders.setText(text);

Java delete database update panel

Everytime I delete something from my JButton it deletes in the database but my jpanel wont update...
I wonder if there is an easy fix for this?
private void DeleteActionPerformed(java.awt.event.ActionEvent evt) {
infLabel.setText(inform[2]);
Connection connection = FlatFinder.getConnection();
Statement selectStmt = null;
try {
selectStmt = connection.createStatement();
Flat activeFlat = (Flat) AdminAll.getSelectedValue();
String sql = String.format(
"DELETE FROM `flats` WHERE flat_id = %d",
activeFlat.getId()
);
selectStmt.executeUpdate(sql);
} catch (SQLException ex) {
Logger.getLogger(MainPanel.class.getName()).log(Level.SEVERE, null, ex);
}
this.repaint();
}
This is my current code. Is there any easy solution to update the jpanel when I press the delete button?

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