为什么我的Servlet输出的图片总是小红叉 ??????
public void service(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
res.setContentType("image/jpeg");
DefaultPieDataset data = getDataSet();
JFreeChart chart = ChartFactory.createPieChart3D("水果产量图",
data,
true,
false,
false
);
ChartUtilities.writeChartAsJPEG(res.getOutputStream(),
0.5f,chart,400,300,null);控制台没提示任何错误
public void service(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
res.setContentType("image/jpeg");
DefaultPieDataset data = getDataSet();
JFreeChart chart = ChartFactory.createPieChart3D("水果产量图",
data,
true,
false,
false
);
ChartUtilities.writeChartAsJPEG(res.getOutputStream(),
0.5f,chart,400,300,null);控制台没提示任何错误
流写图片.
0.5f,chart,400,300,null); 这里估计有问题,仔细检查下呢
谢谢 Java2000_net 看见你的例子了。