RCP软件退出时，清空工作空间内容

 重载ApplicationWorkbenchWindowAdvisor中的postWindowClose() 方法

@Override
 public void postWindowClose() {
  // TODO Auto-generated method stub
  //super.postWindowClose();
  boolean openConfirm = MessageDialog.openConfirm(null, Messages.ApplicationWorkbenchWindowAdvisor_title, Messages.ApplicationWorkbenchWindowAdvisor_content);
  if(openConfirm)
  {
   Location instanceLocation = Platform.getInstanceLocation();
   URL path = instanceLocation.getURL();
   //关闭数据库连接
   SQLiteDBHelper.getSQLiteInstace().Close();
   File  workspace= new File(path.getPath());//+File.separator+SQLiteDBHelper.DB_FILE_NAME
   //删除程序运行的临时记录
   deleteFile(workspace);
  }
  
 }
 //删除文件夹及文件夹内容
 public void deleteFile(File targetFile)
 {
  if(targetFile.isDirectory())
  {
   File[] list = targetFile.listFiles();
   for (int i = 0; i < list.length; i++) {
    deleteFile(list[i]);
   }
   //
   targetFile.deleteOnExit();
  }
  else
   targetFile.deleteOnExit();
 }