我建议使用Servlet创建Chart。
JSP主要用于表示（视图）。
创建一个servlet，该servlet创建图表并将其作为响应发送回去。
import javax.imageio.ImageIO;
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
OutputStream out = response.getOutputStream(); /* Get the output stream from the response object */
response.setContentType("image/png"); /* Set the HTTP Response Type */
ChartCreator chart = new ChartCreator(); // Create chart
chart.createCategoryChart();
ChartUtilities.writeChartAsPNG(out, chart, 400, 300);/* Write the data to the output stream */
}
从JSP调用Servlet。
<img src="/drawChartServlet?type=myDesiredChart&width=..and other processed parameters" ..>
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