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copied!<p>Had the same problem (<a href="https://stackoverflow.com/questions/15004325/file-resolver-in-jasper-reports-5-0-1/15023748#15023748">File resolver in Jasper Reports 5.0.1</a>) and after many hours I found the answer in the JasperReports sources.</p> <pre><code>LocalJasperReportsContext ctx = new LocalJasperReportsContext(DefaultJasperReportsContext.getInstance()); ctx.setClassLoader(getClass().getClassLoader()); ctx.setFileResolver(new FileResolver() { @Override public File resolveFile(String s) { return new File(s); } }); JasperReport jasperReport = (JasperReport) JRLoader.loadObject(jasperfile); JasperFillManager fillmgr = JasperFillManager.getInstance(ctx); JasperExportManager exmgr = JasperExportManager.getInstance(ctx); </code></pre> <p><strong>Edit:</strong> The proper solution would include reporting the problem to the plugin's project ticketing system and maybe propose a patch for the resolver implementation.</p> <p>While waiting for the patch to get accepted, you can extend the <code>JasperReportsResult</code> class and just override the <code>doExecute()</code> method, using the code above, with something like this:</p> <pre><code>protected void doExecute(String finalLocation, ActionInvocation invocation) throws Exception { // Will throw a runtime exception if no "datasource" property. TODO Best place for that is...? initializeProperties(invocation); LOG.debug("Creating JasperReport for dataSource = {}, format = {}", dataSource, format); HttpServletRequest request = (HttpServletRequest) invocation.getInvocationContext().get(ServletActionContext.HTTP_REQUEST); HttpServletResponse response = (HttpServletResponse) invocation.getInvocationContext().get(ServletActionContext.HTTP_RESPONSE); // Handle IE special case: it sends a "contype" request first. // TODO Set content type to config settings? if ("contype".equals(request.getHeader("User-Agent"))) { try (OutputStream outputStream = response.getOutputStream()) { response.setContentType("application/pdf"); response.setContentLength(0); } catch (IOException e) { LOG.error("Error writing report output", e); throw new ServletException(e.getMessage(), e); } return; } // Construct the data source for the report. ValueStack stack = invocation.getStack(); ValueStackDataSource stackDataSource = null; Connection conn = (Connection) stack.findValue(connection); if (conn == null) stackDataSource = new ValueStackDataSource(stack, dataSource, wrapField); if ("https".equalsIgnoreCase(request.getScheme())) { // set the the HTTP Header to work around IE SSL weirdness response.setHeader("CACHE-CONTROL", "PRIVATE"); response.setHeader("Cache-Control", "maxage=3600"); response.setHeader("Pragma", "public"); response.setHeader("Accept-Ranges", "none"); } // Determine the directory that the report file is in and set the reportDirectory parameter // For WW 2.1.7: // ServletContext servletContext = ((ServletConfig) invocation.getInvocationContext().get(ServletActionContext.SERVLET_CONFIG)).getServletContext(); ServletContext servletContext = (ServletContext) invocation.getInvocationContext().get(ServletActionContext.SERVLET_CONTEXT); String systemId = servletContext.getRealPath(finalLocation); Map parameters = new ValueStackShadowMap(stack); File directory = new File(systemId.substring(0, systemId.lastIndexOf(File.separator))); parameters.put("reportDirectory", directory); parameters.put(JRParameter.REPORT_LOCALE, invocation.getInvocationContext().getLocale()); // put timezone in jasper report parameter if (timeZone != null) { timeZone = conditionalParse(timeZone, invocation); final TimeZone tz = TimeZone.getTimeZone(timeZone); if (tz != null) { // put the report time zone parameters.put(JRParameter.REPORT_TIME_ZONE, tz); } } // Add any report parameters from action to param map. Map reportParams = (Map) stack.findValue(reportParameters); if (reportParams != null) { LOG.debug("Found report parameters; adding to parameters..."); parameters.putAll(reportParams); } ByteArrayOutputStream output; JasperPrint jasperPrint; LocalJasperReportsContext ctx = new LocalJasperReportsContext(DefaultJasperReportsContext.getInstance()); ctx.setClassLoader(getClass().getClassLoader()); ctx.setFileResolver(parameters.get()); JasperReport jasperReport = (JasperReport) JRLoader.loadObject(jasperfile); JasperFillManager fillmgr = JasperFillManager.getInstance(ctx); JasperExportManager exmgr = JasperExportManager.getInstance(ctx); // Fill the report and produce a print object try { JasperReport jasperReport = (JasperReport) JRLoader.loadObject(new File(systemId)); if (conn == null) { jasperPrint = fillmgr.fillReport(jasperReport, parameters, stackDataSource); } else { jasperPrint = fillmgr.fillReport(jasperReport, parameters, conn); } } catch (JRException e) { LOG.error("Error building report for uri {}", systemId, e); throw new ServletException(e.getMessage(), e); } // Export the print object to the desired output format try { if (contentDisposition != null || documentName != null) { final StringBuffer tmp = new StringBuffer(); tmp.append((contentDisposition == null) ? "inline" : contentDisposition); if (documentName != null) { tmp.append("; filename="); tmp.append(documentName); tmp.append("."); tmp.append(format.toLowerCase()); } response.setHeader("Content-disposition", tmp.toString()); } JRExporter exporter; if (format.equals(FORMAT_PDF)) { response.setContentType("application/pdf"); exporter = new JRPdfExporter(ctx); } else if (format.equals(FORMAT_CSV)) { response.setContentType("text/csv"); exporter = new JRCsvExporter(ctx); } else if (format.equals(FORMAT_HTML)) { response.setContentType("text/html"); // IMAGES_MAPS seems to be only supported as "backward compatible" from JasperReports 1.1.0 Map imagesMap = new HashMap(); request.getSession(true).setAttribute("IMAGES_MAP", imagesMap); exporter = new JRHtmlExporter(ctx); exporter.setParameter(JRHtmlExporterParameter.IMAGES_MAP, imagesMap); exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, request.getContextPath() + imageServletUrl); // Needed to support chart images: exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint); request.getSession().setAttribute("net.sf.jasperreports.j2ee.jasper_print", jasperPrint); } else if (format.equals(FORMAT_XLS)) { response.setContentType("application/vnd.ms-excel"); exporter = new JRXlsExporter(ctx); } else if (format.equals(FORMAT_XML)) { response.setContentType("text/xml"); exporter = new JRXmlExporter(ctx); } else if (format.equals(FORMAT_RTF)) { response.setContentType("application/rtf"); exporter = new JRRtfExporter(ctx); } else { throw new ServletException("Unknown report format: " + format); } Map exportParams = (Map) stack.findValue(exportParameters); if (exportParams != null) { LOG.debug("Found export parameters; adding to exporter parameters..."); exporter.getParameters().putAll(exportParams); } output = exportReportToBytes(jasperPrint, exporter); } catch (JRException e) { LOG.error("Error producing {} report for uri {}", format, systemId, e); throw new ServletException(e.getMessage(), e); } finally { try { conn.close(); } catch (Exception e) { LOG.warn("Could not close db connection properly", e); } } response.setContentLength(output.size()); // Will throw ServletException on IOException. writeReport(response, output); } </code></pre> <p>and than use the new extension as the <strong>Result</strong> in Struts. Please test if the method is implemented correctly.</p> <p>The final solution should include the use of a context instance setter on the Result object, or maybe a global static context instance accessible from the Result object.</p>

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