java.lang.IllegalStateException + struts + JasperPrint

[Rafael Fagundes]

Hi.

First of all, I read the topic http://faq.javaranch.com/view?IllegalStateException. But still in doubt since my scenario goes like this:

#1. Web application, using RAD and Struts (servlets, filters, actions, and so on....)
#2. A request to generate a PDF, after the Action.execute processing, works like this:

			
                        JasperPrint jasprTemp = JasperFillManager.fillReport(arqJasper,
					map, ds);
			byte[] bytes = JasperExportManager.exportReportToPdf(jasprTemp);
			httpRes.setContentType("application/pdf");
			
			ServletOutputStream out = httpRes.getOutputStream();
			out.write(bytes, 0, bytes.length);
			out.flush();  // my problema, I guess
			out.close();

#3. After the execution above, my filter is throwing the exception whit the warning:

WARNING: Cannot set status. Response already committed.
WARNING: Cannot set header. Response already committed.
javax.servlet.ServletException: getOutputStream() has already been called for this response
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:166)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)

What should I do to avoid this cenario?

Regard´s,
Rafael.

[Alexis Ekkehard]

We solved a similar exception related with sendredirect using lady4j. In our case the problem was that we already retrieved the outputstream and we tried to redirect... be careful with that.