正如標題所示,即使在映像保存後,我也無法在JSP頁面上顯示3D餅圖。我嘗試了絕對路徑和相對路徑,但它仍然不起作用。有人可以幫助解決這個問題嗎?無法在JSP頁面上顯示3D餅圖
這裏是源代碼:
AnalyzeUserClient.jsp(爪哇碼)
DefaultPieDataset pieDataset = new DefaultPieDataset();
BufferedReader bReader =new BufferedReader(new FileReader("C:/Users/L31207/Desktop/eclipse-jee-juno-win32/eclipse/user.txt"));
String s;
while ((s=bReader.readLine())!=null){
String datavalue [] = s.split("\t");
String category = datavalue[0];
String value = datavalue [1];
pieDataset.setValue(category, Double.parseDouble(value));
}
bReader.close();
JFreeChart chart = ChartFactory.createPieChart3D(
"Percentage of Each Category for User", pieDataset, true, true, true);
PiePlot3D p = (PiePlot3D) chart.getPlot();
p.setLegendLabelGenerator(new StandardPieSectionLabelGenerator("{0}: {2}"));
p.setForegroundAlpha(0.5f);
p.setBackgroundAlpha(0.2f);
chart.setBackgroundPaint(Color.white);
chart.setAntiAlias(true);
chart.setBorderVisible(false);
chart.setTextAntiAlias(true);
try {
ChartUtilities.saveChartAsPNG(new File("C:/Users/L31207/Desktop/eclipse-jee-juno-win32/eclipse/AnalyzeUser.png"), chart, 800, 600);
} catch (IOException e) {
e.printStackTrace();
System.err.println("Problem occurred creating chart.");
}
AnalyzeUserClient.jsp(HTML代碼)
<img src="C:/Users/L31207/Desktop/eclipse-jee-juno-win32/eclipse/AnalyzeUser.png" height="500px" width="500px" usemap="#chart">
請參閱此[備選](http://stackoverflow.com/a/13093044/230513)。 – trashgod