Hi,
I created a JFreeChart, using servlet I am writing it as an image. The problem now is, it is not displayed.
I have included the code
<HTML>
<HEAD>
<TITLE>Teresa Charts</TITLE>
</HEAD>
<BODY background=".\\Images\\bground.jpg">
<FORM METHOD="POST" name="chartform" action="Chart.jsp">
<%
DefaultPieDataset pd = new DefaultPieDataset();
try
{
.....
for(int cnt=1;cnt<alValues.size();cnt++)
{
int val = Integer.parseInt((alValues.get(cnt).toString().trim()));
pd.setValue(alNames.get(cnt).toString().trim(),val);
}
JFreeChart chart=ChartFactory.createPieChart3D("Pie Chart",pd,true,true,true);
request.getSession().setAttribute("PieChart", chart);
request.getSession().setAttribute("contentType", "image/png");
chart.setBackgroundPaint(java.awt.Color.white);
chart.setBorderVisible(false);
}
catch(Exception e)
{
e.printStackTrace();
}
%>
<img src="showChart" border=0>
</FORM>
</BODY>
</HTML>
---------------------------servlet-----------------------------------
public class showChart extends HttpServlet
{
public void service(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException
{
String contentType = (String)req.getSession().getAttribute("contentType");
if (contentType == null || "".equals(contentType))
{
contentType = "image/png"; // default
}
res.reset();
res.setContentType(contentType);
OutputStream sos = res.getOutputStream();
ByteArrayOutputStream baos = (ByteArrayOutputStream)req.getSession().getAttribute("LineChart");
baos.writeTo(sos);
}
}
This is urgent, can anyone tell me whats wrong with the code.
Regards,
Carry.