import java.awt.FlowLayout;
import java.io.File;
import java.io.FileNotFoundException;
 
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.filechooser.FileSystemView;
 
 
public class GetFileIcon {
 
 /**
	 * @param args
	 */
 public static void main(String[] args) {
  String filePath = "D:/luckystar2008/works/QDII/SR/SR_PA02897156-QDII后台估值核算规则优化_任务分配.xlsx";
  File f = new File(filePath);
  JFrame frm = new JFrame();
  frm.setSize(300, 200);
  frm.setLocationRelativeTo(null);
  frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frm.setVisible(true);
  frm.setLayout(new FlowLayout(10,10,FlowLayout.LEADING));
  
  JLabel sl = new JLabel("小图标");
  frm.add(sl);
  JLabel bl = new JLabel("大图标");
  frm.add(bl);
  
  sl.setIcon(getSmallIcon(f));
  bl.setIcon(getBigIcon(f));
 }
 
 /**
	 * 获取小图标
	 * @param f
	 * @return
	 */
 private static Icon getSmallIcon(File f) {
  if (f != null && f.exists()) {
   FileSystemView fsv = FileSystemView.getFileSystemView();
   return fsv.getSystemIcon(f);
  }
  return null;
 }
 
 /**
	 * 获取大图标
	 * @param f
	 * @return
	 */
 private static Icon getBigIcon(File f) {
  if (f!=null && f.exists()) {
   try {
    sun.awt.shell.ShellFolder sf = sun.awt.shell.ShellFolder.getShellFolder(f);
    return new ImageIcon(sf.getIcon(true));
   } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  return null;
 }
}