private void findAction(){
		try{
		 MsgHead findMsg=new MsgHead();
		 findMsg.setTotalLen(4+1+4+4);
		 findMsg.setType(IMsgConstance.command_find);
		 findMsg.setSrc(jkNum);
		 findMsg.setDest(IMsgConstance.Server_JK_NUMBER);
		 conn.sendMsg(findMsg);
		}catch(Exception ef){
			ef.printStackTrace();
			javax.swing.JOptionPane.showMessageDialog(this,"ʧ!");
		}
	}