@Test
	public void CreatePieTest() throws IOException{
		
		String file_name = Constant.path +"/JFreeChar/pie/PieTest_01.jpg";
		
		File file = new File(file_name);
		
		//jfreechart( ͼ)
		JFreeChart chart=ChartFactory.createPieChart("Title",null,true,true,false);
		
		//ͼ񱨴ָļ
		ChartUtilities.saveChartAsJPEG(file, chart, 400, 300);
	}