Question

我正在尝试将图像文件保存在netbeans的资源文件夹中，但是我遇到了查找资源文件夹路径的问题。

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.");
    }

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

Answer 1

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());
         }
    }
}

如何将图像保存到资源文件夹java swing

1 个答案: