如何在显示pdf中显示特定消息错误

Question

我正在尝试用spring显示一个报告PDF，我终于得到了它，但是问题出现在我的代码中有一个异常或错误的时候。在这种情况下，我想在我的应用程序中显示特殊的消息。sping控制器返回一个带有文件pdf的ResponseEntity和一个http状态代码。

 <div role="tabpanel" class="tab-pane" id="co_<%= idFacturaF1 %>">
        <object class="pdfObject" data="<%= App.CONTEXT_PATH + '/api/certificadoOrigen/' + idFacturaF1%>#page=1&view=FitH,top" type="application/pdf">
            <param name="wmode" value="transparent">
            <param name="allowfullscreen" value="true" />
            alt : <a href="<%= App.CONTEXT_PATH + '/api/certificadoOrigen/' + idFacturaF1%>">CO.pdf</a>
        </object>
    </div>

    @RequestMapping(value = "/api/certificadoOrigen/{id}", method = RequestMethod.GET, produces = "application/pdf")
public Object getPDFCo(final @PathVariable("id") Long id, final HttpServletRequest request) {

    try {
       // sentences where build the pdf object...

        final HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.put("Content-Type", Arrays.asList(new String[] { "application/pdf;charset=UTF-8" }));
        final ResponseEntity<byte[]> response = new ResponseEntity<byte[]>(pdf, httpHeaders, HttpStatus.OK);
        return response;
    } catch (final Exception e) {
//Here I want to capture the message errors
    }

Answer 1

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