Hai,
I am trying to develop an application that going to display several charts
in 1 page. The coding as below:
public class JFreeChartImage extends Image {
private int width;
private int height;
public JFreeChartImage(String id, JFreeChart chart, int width, int
height){
super(id, new Model(chart));
this.width = width;
this.height = height;
}
@Override
protected Resource getImageResource() {
return new DynamicImageResource(){
@Override
protected byte[] getImageData() {
JFreeChart chart =
(JFreeChart)getModelObject();
return toImageData(chart.createBufferedImage(width,
height));
}
@Override
protected void setHeaders(WebResponse response) {
if (isCacheable()) {
super.setHeaders(response);
} else {
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
}
}
};
}
}
while this i am loading Page A , i failed to load Page B from my application
in different tab , where Page B is also consist of different charts, it
shows page expired or sometimes show broken link icon.
For Page A, coding for Page A will be exeuted, then will get the
JFreeChartImage class to invoke the getImageResource() method but not the
getImageData(). --> Lead to broken link
For Page B, Coding for page B will be executed, then will get the
JFreeChartImage class to invoke the getImageResource()and finally the
getImageData().
Is it because the chart for Page A in getImageResource() that loaded earlier
been override by Charts from Page B, if yes how can I fix this in order to
show the charts for both page?
Is this the nature of getImageData that only will in invoke after loading
all other pages?
Is anyone face this issue before? Pls help..
Thanx alot..
--
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