在jsp文件中直接显示图片.jsp

开源图表组件JFreeChart的入门例程

<%
        MyBarChartDemo cyChart = new MyBarChartDemo();
        CategoryDataset dataset = cyChart.createDataset();
        JFreeChart chart = cyChart.createChart(dataset);
		try{
		OutputStream ostream = response.getOutputStream();
        ChartUtilities.writeChartAsPNG(ostream,chart,500,300);
        ostream.close();
		//File jpFile = new File("D:\\img\\myBarChartDemo.jpg");
		//ChartUtilities.saveChartAsJPEG(jpFile,chart,300,400);
		}
		catch(Exception e){
		}


%>