Example usage for org.apache.http.client.methods CloseableHttpResponse getHeaders

Introduction

In this page you can find the example usage for org.apache.http.client.methods CloseableHttpResponse getHeaders.

Prototype

Header[] getHeaders(String str);

Source Link

Usage

From source file:org.flowable.admin.service.engine.FlowableClientService.java

public AttachmentResponseInfo executeDownloadRequest(HttpUriRequest request, String userName, String password,
        Integer... expectedStatusCodes) {
    FlowableServiceException exception = null;
    CloseableHttpClient client = getHttpClient(userName, password);
    try {/*from   ww  w .  ja  v  a 2  s.  co  m*/
        CloseableHttpResponse response = client.execute(request);

        try {
            int statusCode = -1;
            if (response.getStatusLine() != null) {
                statusCode = response.getStatusLine().getStatusCode();
            }
            boolean success = Arrays.asList(expectedStatusCodes).contains(statusCode);
            if (success) {
                if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                    String contentDispositionFileName[] = response.getHeaders("Content-Disposition")[0]
                            .getValue().split("=");
                    String fileName = contentDispositionFileName[contentDispositionFileName.length - 1];
                    return new AttachmentResponseInfo(fileName,
                            IOUtils.toByteArray(response.getEntity().getContent()));
                } else {
                    return new AttachmentResponseInfo(statusCode,
                            readJsonContent(response.getEntity().getContent()));
                }

            } else {
                exception = new FlowableServiceException(
                        extractError(readJsonContent(response.getEntity().getContent()),
                                "An error occurred while calling Flowable: " + response.getStatusLine()));
            }
        } catch (Exception e) {
            log.warn("Error consuming response from uri " + request.getURI(), e);
            exception = wrapException(e, request);
        } finally {
            response.close();
        }

    } catch (Exception e) {
        log.error("Error executing request to uri " + request.getURI(), e);
        exception = wrapException(e, request);
    } finally {
        try {
            client.close();
        } catch (Exception e) {
            log.warn("Error closing http client instance", e);
        }
    }

    if (exception != null) {
        throw exception;
    }

    return null;
}