.net api/import gets Error: Unable to read export file key from multipart stream

Dirk Gous

Hi,
I'm trying to export resources from one jsReports instance to another using the export/import Api
The Export works firn and I can import the zip file using the jsReports studio or Postman
I'm experiencing and issue trying to upload from .net using httpClient.

jsReports version 4.2

Exception message:
jsreport-2 | 2024-01-19T13:42:21.077Z - warn: Error during processing request at http://localhost:5489/reporting/api/import?fullImport=true&continueOnFail=false, details: Error: Unable to read export file key from multipart stream
jsreport-2 | at module.exports (/app/node_modules/@jsreport/jsreport-core/lib/shared/createError.js:10:13)
jsreport-2 | at MainReporter.createError (/app/node_modules/@jsreport/jsreport-core/lib/shared/reporter.js:49:12)
jsreport-2 | at /app/node_modules/@jsreport/jsreport-import-export/lib/helpers.js:123:26
jsreport-2 | at done (/app/node_modules/multer/lib/make-middleware.js:45:7)
jsreport-2 | at /app/node_modules/multer/lib/make-middleware.js:65:11
jsreport-2 | at removeUploadedFiles (/app/node_modules/multer/lib/remove-uploaded-files.js:5:28)
jsreport-2 | at /app/node_modules/multer/lib/make-middleware.js:61:9
jsreport-2 | at Counter.onceZero (/app/node_modules/multer/lib/counter.js:23:29)
jsreport-2 | at abortWithError (/app/node_modules/multer/lib/make-middleware.js:56:21)
jsreport-2 | at Multipart.<anonymous> (/app/node_modules/multer/lib/make-middleware.js:160:41)

Code Snip:

var response =await exportClient.PostAsync(_fromUrl + "/api/export", new StringContent(
                JsonConvert.SerializeObject(request), Encoding.UTF8,
                "application/json"));
            
            var stream = response.Content.ReadAsStream();
            var streamContent = new StreamContent(stream);
            streamContent.Headers.ContentType = MediaTypeHeaderValue.Parse(MediaTypeNames.Application.Zip);
            var formContent = new MultipartFormDataContent("myDillimeter");
            formContent.Headers.ContentType = MediaTypeHeaderValue.Parse("multipart/form-data");
            formContent.Headers.ContentType.Parameters.Add(new NameValueHeaderValue("boundary","myDillimeter"));
            
            var contentType = formContent.Headers.ContentType.ToString();
            formContent.Headers.Remove("Content-Type");
            var fixedContentType = new string(contentType.Where(x => x != '\"').Select(x => x).ToArray());
            formContent.Headers.TryAddWithoutValidation("Content-Type", fixedContentType);
            
            formContent.Headers.ContentLength = stream.Length;
            formContent.Add(streamContent, "import.jsrexport");
            response = await exportClient.PostAsync(_toUrl + "/api/import?fullImport=true&continueOnFail=false", formContent);

admin

Here is the change you need to do

formContent.Add(streamContent, "file", "import.jsrexport");

Dirk Gous

Thx.
Appreciate the prompt response