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    <p>There are two problems.</p> <p>The first problem is that the <code>&lt;p:commandButton&gt;</code> sends by default an Ajax request. This request is fired by JavaScript code. However, JavaScript can't do anything with a response which contains a file download. Due to security restrictions JavaScript can't spawn a <em>Save As</em> dialogue or something. The response is basically totally ignored. </p> <p>You need to add <code>ajax="false"</code> to <code>&lt;p:commandButton&gt;</code> to turn ajax off so that the button fires a normal synchronous HTTP request, or you need to replace it by standard <code>&lt;h:commandButton&gt;</code>.</p> <pre class="lang-html prettyprint-override"><code>&lt;p:commandButton ajax="false" ... /&gt; </code></pre> <p>or</p> <pre class="lang-html prettyprint-override"><code>&lt;h:commandButton ... /&gt; </code></pre> <p>The second problem is that your servlet doesn't write the Excel file to the response at all, but instead to a local file which is stored in server's working directory. Basically, the HTTP response contains <em>nothing</em>. You need to pass <code>HttpServletResponse#getOutputStream()</code> to the <code>WorkBook#write()</code> method.</p> <pre><code>workbook.write(response.getOutputStream()); </code></pre> <p>On an unrelated note, I wonder how the servlet is useful here. Do you want to reuse it outside JSF? If not, you don't necessarily need to dispatch to the servlet at all, but just execute the same code in bean's action method. That empty <code>catch</code> block is also not nice. I'd just declare it as <code>throws</code> in method or at least rethrow it as <code>new FacesException(e)</code>.</p> <hr> <p><strong>Update</strong> as per the comments you seem not be interested in the servlet at all. Here's a minor rewrite how you could send the Excel file programmatically in a JSF action method.</p> <pre><code>public void getReportData() throws IOException { HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = workbook.createSheet(); HSSFRow row = sheet.createRow(0); HSSFCell cell = row.createCell(0); cell.setCellValue(0.0); FacesContext facesContext = FacesContext.getCurrentInstance(); ExternalContext externalContext = facesContext.getExternalContext(); externalContext.setResponseContentType("application/vnd.ms-excel"); externalContext.setResponseHeader("Content-Disposition", "attachment; filename=\"my.xls\""); workbook.write(externalContext.getResponseOutputStream()); facesContext.responseComplete(); } </code></pre>
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    1. POExport to Excel JSF and PrimeFaces
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    1. POExport to Excel JSF and PrimeFaces
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    1. COi don't want to use the servlet. thought i had too. defiantly look into changing that after i get this working.
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    2. COIn that case, check the answer update for a rewrite suggestion. The `ExternalContext` has lot of delegating methods. Make use of them. http://download.oracle.com/javaee/6/api/javax/faces/context/ExternalContext.html You ultimately want to end up with **zero** `javax.servlet` imports in your JSF code.
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    3. COjust got it working without the servlet. really appreciate the help.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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