JSF Erro JasperRerport export to PDF enconding[RESOLVIDO]

public String imprimir() throws Exception {
		byte[] bytes = null;
		try {
			URL relatorioURL = this.getCurrentClassLoader().getResource("reports/relprodutos.jasper");
     		JasperReport relatorioJasper = (JasperReport) JRLoader.loadObject(relatorioURL);
	     	bytes = JasperRunManager.runReportToPdf(relatorioJasper, null);

		} catch (JRException e) {
			e.printStackTrace();
		}
		super.setBytes(bytes, "application/pdf");
		return null;
	}

public void setBytes(byte[] bytes, String mimeType) {
		
		HttpServletResponse servletResponse = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();
		
		if (bytes != null && bytes.length > 0) {
			// envia o relatório em formato PDF para o browser
			servletResponse.setContentType(mimeType);
			servletResponse.setContentLength(bytes.length);
			servletResponse.setHeader("Content-disposition", "attachment; filename=\"" + "relatorio" + ".pdf\"");			
			ServletOutputStream ouputStream;	
			try {
				ouputStream = servletResponse.getOutputStream();
				ouputStream.write(bytes, 0, bytes.length);
				ouputStream.flush();
				ouputStream.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		
		FacesContext.getCurrentInstance().responseComplete(); 
	}