How to use

org.dcm4che3.json.JSONWriter

constructor

private static JsonObject toAttributesObject(Attributes targetSeriesAttrs) {
  StringWriter strWriter = new StringWriter();
  JsonGenerator gen = Json.createGenerator(strWriter);
  JSONWriter writer = new JSONWriter(gen);
  writer.write(targetSeriesAttrs);
  gen.flush();
  gen.close();
  return Json.createReader(new StringReader(strWriter.toString()))
      .readObject();
}

gen.writeStartArray();
for (Attributes metadata : instance.metadataList)
  new JSONWriter(gen).write(metadata);
gen.writeEnd();
gen.flush();

gen.writeStartArray();
for (Attributes metadata : instance.metadataList)
  new JSONWriter(gen).write(metadata);
gen.writeEnd();
gen.flush();

public void parse(DicomInputStream dis) throws IOException {
  dis.setIncludeBulkData(includeBulkData);
  dis.setBulkDataDescriptor(bulkDataDescriptor);
  dis.setBulkDataDirectory(blkDirectory);
  dis.setBulkDataFilePrefix(blkFilePrefix);
  dis.setBulkDataFileSuffix(blkFileSuffix);
  dis.setConcatenateBulkDataFiles(catBlkFiles);
  JsonGenerator jsonGen = createGenerator(System.out);
  JSONWriter jsonWriter = new JSONWriter(jsonGen);
  dis.setDicomInputHandler(jsonWriter);
  dis.readDataset(-1, -1);
  jsonGen.flush();
}

public void parse(DicomInputStream dis) throws IOException {
  dis.setIncludeBulkData(includeBulkData);
  dis.setBulkDataDescriptor(bulkDataDescriptor);
  dis.setBulkDataDirectory(blkDirectory);
  dis.setBulkDataFilePrefix(blkFilePrefix);
  dis.setBulkDataFileSuffix(blkFileSuffix);
  dis.setConcatenateBulkDataFiles(catBlkFiles);
  JsonGenerator jsonGen = createGenerator(System.out);
  JSONWriter jsonWriter = new JSONWriter(jsonGen);
  dis.setDicomInputHandler(jsonWriter);
  dis.readDataset(-1, -1);
  jsonGen.flush();
}