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如何将图像保存到资源文件夹java swing中

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我试图将图像文件保存在netbeans的资源文件夹中，但我有问题找到资源文件夹的路径 .

我的代码如下：

JFileChooser fileChooser = new JFileChooser();
    FileNameExtensionFilter filter = new FileNameExtensionFilter("*.Images", "jpg", "gif", "png", "jpeg");
    fileChooser.addChoosableFileFilter(filter);
    int result = fileChooser.showSaveDialog(null);
    if (result == JFileChooser.APPROVE_OPTION) {
        path = fileChooser.getSelectedFile().getAbsolutePath();
        filename = fileChooser.getSelectedFile().getName();
         String fullPath = getClass().getResource("/resource").toString();
                                        System.out.println(fullPath);
        System.out.println(filename);
        System.out.println(path);
        Image img = null;
        try {
            img = ImageIO.read(fileChooser.getSelectedFile());

        } catch (IOException ex) {
            Logger.getLogger(AddItems.class.getName()).log(Level.SEVERE, null, ex);
        }
        ImageIcon image = new ImageIcon(img.getScaledInstance(208, 104, 208),path);

        jlblImage.setIcon(image);

    } else {
        JOptionPane.showMessageDialog(null, "No file selected.");
    }

com.aurav.auctionhouse.view.view.AdcessItems.access $ 000（AddItems）中的com.gaurav.auctionhouse.view.AddItems.jImageBtnActionPerformed（AddItems.java:213）中的线程“AWT-EventQueue-0”java.lang.NullPointerException中的异常.java：29）at com.gaurav.auctionhouse.view.AddItems $ 1.actionPerformed（AddItems.java:99）at javax.swing.AbstractButton.fireActionPerformed（AbstractButton.java:2022）at javax.swing.AbstractButton $ Handler.actionPerformed （AbstractButton.java:2348）位于javax.swing.plaf.basic.BasicButtonListener.mouseReleased的javax.swing.DefaultButtonModel.setPressed（DefaultButtonModel.java:259）的javax.swing.DefaultButtonModel.fireActionPerformed（DefaultButtonModel.java:402） Basic.ButtonListener.java:252）java.awt.Component.processMouseEvent（Component.java：6533）at java.awt.Component.processEvent（Component.java:6298）javax.swing.JComponent.processMouseEvent（JComponent.java:3324） ）java.awt.Component上的java.awt.Container.processEvent（Container.java:2237）java.awt.Component.dispatchEventImpl（Component.java） ：4889）java.awt.Container.dispatchEventImpl（Container.java:2295）at java.awt.Component.dispatchEvent（Component.java:4711）at java.awt.LightweightDispatcher.retargetMouseEvent（Container.java:4889）at java .awt.LightweightDispatcher.processMouseEvent（Container.java:4526）位于java.awt.Window的java.awt.LightweightDispatcher.dispatchEvent（Container.java:4467）java.awt.Container.dispatchEventImpl（Container.java:2281） . dispatchEventImpl（Window.java:2746）位于java.awt.EventQueue.access上的java.awt.Component.dispatchEvent（Component.java:4711）java.awt.EventQueue.dispatchEventImpl（EventQueue.java:758）$ 500（EventQueue . java：97 . java.awt.EventQueue $ 3.run（EventQueue.java:709）java.awt.EventQueue $ 3.run（EventQueue.java:703）at java.security.AccessController.doPrivileged（Native Method）at java .security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:80）at java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.jav a：90）java.awt.EventQueue $ 4.run（EventQueue.java:731）at java.awt.EventQueue $ 4.run（EventQueue.java:729）at java.security.AccessController.doPrivileged（Native Method）

java netbeans

1 回答

  • 4
    private void jbtnSubmitActionPerformed(java.awt.event.ActionEvent evt) {                                           
    // TODO add your handling code here:
    String itemname = jtxtItemName.getText();
    String category = jcboCategory.getSelectedItem().toString();
    String description = jtxtAreaDescription.getText();
    String reservedPrice = jtxtReservedPrice.getText();
    String image =filename;

    if (itemname.isEmpty() || category.isEmpty() || description.isEmpty() || reservedPrice.isEmpty() || image.isEmpty()) {
        JOptionPane.showMessageDialog(null, "All fields are required.");
    }  else {
        Item item = new Item(category, description, reservedPrice, itemname, image);
         try {
             int i = itemdao.createItem(item);
             if(i> 0 ){
                 File sourceFile = new File(path);
                 File destinationFile = new File("resources/Image/"+ filename);
                 BufferedReader reader;
                 PrintWriter writer;
                 try {
                     reader = new BufferedReader(new FileReader(sourceFile));
                     writer = new PrintWriter(new FileWriter(destinationFile));
                     reader.close();
                     writer.close();
                 } catch (Exception e) {
                     JOptionPane.showMessageDialog(null, "Failed to save Image");
                 }
                 //Paths.get(resource.toURI()).toFile();
                    JOptionPane.showMessageDialog(null, "Successfully saved item");
             }
         } catch (SQLException ex) {
             JOptionPane.showMessageDialog(null, ex.getMessage());
         }
    }
}
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