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jspを使用してjFreeChartを表示しようとしています。チャートは生成されますが、ブラウザーで表示することはできません。ブラウザに空のフレームが表示されます。実行されるべき他の設定がありますか？jFreeChartがブラウザに表示されていません
JSPページ：
%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ page import="java.awt.*" %>
<%@ page import="java.io.*" %>
<%@ page import="org.jfree.chart.*" %>
<%@ page import="org.jfree.chart.axis.*" %>
<%@ page import="org.jfree.chart.entity.*" %>
<%@ page import="org.jfree.chart.labels.*" %>
<%@ page import="org.jfree.chart.plot.*" %>
<%@ page import="org.jfree.chart.renderer.category.*" %>
<%@ page import="org.jfree.chart.urls.*" %>
<%@ page import="org.jfree.data.category.*" %>
<%@ page import="org.jfree.data.general.*" %>
<%
final double[][] data = new double[][]{
{210, 300, 320, 265, 299},
{200, 304, 201, 201, 340}
};
final CategoryDataset dataset = DatasetUtilities.createCategoryDataset(
"Team ", "", data);
JFreeChart chart = null;
BarRenderer renderer = null;
CategoryPlot plot = null;
final CategoryAxis categoryAxis = new CategoryAxis("Match");
final ValueAxis valueAxis = new NumberAxis("Run");
renderer = new BarRenderer();
plot = new CategoryPlot(dataset, categoryAxis, valueAxis, renderer);
plot.setOrientation(PlotOrientation.VERTICAL);
chart = new JFreeChart("Srore Bord", JFreeChart.DEFAULT_TITLE_FONT, plot, true);
chart.setBackgroundPaint(new Color(249, 231, 236));
Paint p1 = new GradientPaint(
0.0f, 0.0f, new Color(16, 89, 172), 0.0f, 0.0f, new Color(201, 201, 244));
renderer.setSeriesPaint(1, p1);
Paint p2 = new GradientPaint(
0.0f, 0.0f, new Color(255, 35, 35), 0.0f, 0.0f, new Color(255, 180, 180));
renderer.setSeriesPaint(2, p2);
plot.setRenderer(renderer);
try {
final ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
final File file1 = new File("D:/barchart.png");
ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);
} catch (Exception e) {
out.println(e);
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" >
<!meta http-equiv="refresh" content="1">
<title>JSP Page</title>
</head>
<body>
<IMG SRC="barchart.png" WIDTH="600" HEIGHT="400" BORDER="0" USEMAP="#chart">
</body>
</html>