我正在制作一个java rmi based application
我从服务器传递和接收 ImageIcon 对象的地方......(图像存储在服务器中的单独 URL 中)
该功能涉及以下......
1. Getting the image from the server at first....(on button press A)
2. Replacing it with a image file in the client[optional]....(on button press B)
3. Remove the image with a default image[optional]....(on button press C)
4. Sending it back to the Server....................(On button press D).....
这里的图像显示在一个jlabel
叫做img_label
我使用的代码如下......
使用的变量
java.awt.Image img;
javax.swing.ImageIcon CurrentImageIcon;
javax.swing.ImageIcon DefaultImageIcon;
// CurrentImageIcon contains the image to be displayed in the img_label....
// img is used for copying as well for scaling......
// DefaultImageIcon holds the default Image......
开启按钮按下 A
img = temp.getImage();
CurrentImageIcon = new ImageIcon(img);
// Assuming temp holds the ImageIcon taken from the server.......
img=img.getScaledInstance(83,85 , Image.SCALE_DEFAULT);
img_label.setIcon(new ImageIcon(img));
img_label.revalidate();
img_label.repaint();
开启按钮按下 B
String url_text = jTextField.getText(); // taking the url frm the field.....
CurrentImageIcon = new ImageIcon(url_text);
img=CurrentImageIcon.getImage();
img=img.getScaledInstance(83,85 , Image.SCALE_DEFAULT);
img_label.setIcon(new ImageIcon(img));
img_label.revalidate();
img_label.repaint();
开按钮 按 C
img = DefaultImageIcon.getImage();
CurrentImageIcon = new ImageIcon(img);
img=img.getScaledInstance(83,85 , Image.SCALE_DEFAULT);
img_label.setIcon(new ImageIcon(img));
img_label.revalidate();
img_label.repaint();
开按钮 按 D
// ImagetoSend is an ImageIcon to be sent to the Server.....
ImagetoSend = CurrentImageIcon;
CurrentImageIcon = null;
现在我遇到的问题是一个奇怪的问题...... 当我点击这个按钮时,图像正在嵌入,因为我想要重新绘制......
But when i download the recently uploaded image next time on Button press A....it is displayed either magnified or reduced to size even though i included the getScaledInstance method....
像这样...
我正在处理的图像是 jpg 图像......我什至检查了服务器目录中的图像......从客户端上传到服务器的那个文件没有发生大小变化。但是当它被下载并嵌入到 jlabel 中时会观察到变化...... 任何人都可以帮我解决这个问题......??