[jCharts-users] Re: [jCharts-developers] Charts written in JSP's Question

[Nathaniel G. A. <nat...@ya...>]

--- Dan Choi <cho...@ho...> wrote:
> I've noticed that it is possible to create a chart using a JSP and have 
> created one myself that way.  The reason being is I didn't want the chart to 
> appear in a new window (like a Servlet does), but appear in my navigation 
> frame.  This typically works, like in the example you provided in the online 
> guide, but it doesn't work when you have already used a JSP to draw the 
> navigation.  Because my JSP has already called the getWriter() method, when 
> the getOutputStream() method is called by ServletEncoderHelper it throws an 
> IllegalStateException.
> 

yes. Generating charts directly from a JSP is generally not a good idea because of this.  If you
leave a space on the end of a line you will get an error as the outputStream has already been
committed.

A servlet does not have to appear in a new window.  Simply place an <img src="myChartServlet">
where you want your chart to appear.


=====
http://nathaniel-auvil.blog-city.com/

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