HttpTask with api streaming a file back as response

sheethalT · August 21, 2018, 12:15pm

Hi ,
I’m using Http task , with an API that streams a file back as output.After the engine updates its response,in the DelegateExecution i’m trying to get the response and write it to a file. In this case the file is corrupted for all formats except ’ .txt ’ format.

why is this happening?

Thanks in advance for your response !!

tijs · August 23, 2018, 8:32am

Hi,

Is the REST Service setting the right content type in the response?
It’s not advised to set the file as a variable to the process instance. It’s maybe easier to use a HttpResponseHandler and do the file handling directly there. For an example see this test class:

github.com

flowable/flowable-engine/blob/master/modules/flowable-http/src/test/java/org/flowable/http/bpmn/SimpleHttpResponseHandler.java

/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.flowable.http.bpmn;

import org.flowable.common.engine.api.variable.VariableContainer;
import org.flowable.http.HttpResponse;
import org.flowable.http.delegate.HttpResponseHandler;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

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Best regards,

Tijs

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HttpTask with api streaming a file back as response

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