Label显示图片的问题！！！急！！

Question

是不是Label更新的问题啊？？
我的路径不变，就文件不停在变，而且我保证是在刷新Label之前文件就更新了

Answer 1

因为我要不停的生成临时文件来覆盖那个目录下的testout.gif，然后不断调用setIcon方法来显示图片到label上

Answer 2

如何刷新啊，我每次都setIcon怎么都不行

Answer 3

package pinglun;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
class Rect extends JLabel
{
  ImageIcon ima;
  String path = "d://11-5.jpg";
  int tuo_kx=0, tuo_ky=0, panel_x=300, panel_y=225, panel_w=205, panel_h=205;  public Rect()
  {
    addMouseMotionListener(new label_jLabel2_mouseMotionAdapter(this));
    addMouseListener(new label_jLabel2_mouseAdapter(this));
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }  public void repaint(String path){
       this.path=path;
       repaint();
  }
  public void paint(Graphics g) {
   ima=new ImageIcon(path);
    g.drawImage(ima.getImage(),0,0,this.getWidth(),this.getHeight(),Color.BLUE,this);  }   void jLabel2_mousePressed(MouseEvent e) {
       tuo_kx = e.getX();
       tuo_ky = e.getY();
       System.out.println(tuo_kx); }
  void jLabel2_mouseDragged(MouseEvent e) {
    int jx = e.getX();
    int jy = e.getY();
         setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));         if (panel_x + jx - tuo_kx <= 0) {
           panel_x = 0;
         }
         else {
           panel_x -= (tuo_kx - jx);
         }
         if (panel_y + jy - tuo_ky <= 0) {
           panel_y = 0;
         }
         else {
           panel_y -= (tuo_ky - jy);
         }
       setBounds(new Rectangle(panel_x, panel_y, panel_w, panel_h));
  }
  private void jbInit() throws Exception {
    this.setBorder(BorderFactory.createLineBorder(Color.black));
  }}
class label_jLabel2_mouseMotionAdapter extends java.awt.event.MouseMotionAdapter {
  Rect adaptee;  label_jLabel2_mouseMotionAdapter(Rect adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseDragged(MouseEvent e) {
    adaptee.jLabel2_mouseDragged(e);
  }
}class label_jLabel2_mouseAdapter extends java.awt.event.MouseAdapter {
  Rect adaptee;  label_jLabel2_mouseAdapter(Rect adaptee) {
    this.adaptee = adaptee;
  }
  public void mousePressed(MouseEvent e) {
    adaptee.jLabel2_mousePressed(e);
  }
}
将它加到JFrame试试