Java Integration

@Test
public void convertCSVToExcelUsingGoodGrids()
  throws ClientProtocolException, IOException
  {
    CloseableHttpClient client = HttpClients.createDefault();
    String goodGridsAPIUrl = "https://api.goodgrids.com/api/convert/v1/csv-to-excel/3a6c0d9ac7c74d";
    HttpPost httpPost = new HttpPost(goodGridsAPIUrl);

    MultipartEntityBuilder builder = MultipartEntityBuilder.create();
    builder.addBinaryBody("file", new File("to_convert.csv"),
      ContentType.APPLICATION_OCTET_STREAM, "to_convert.csv");

    HttpEntity multipart = builder.build();
    httpPost.setEntity(multipart);

    CloseableHttpResponse response = client.execute(httpPost);
    assertThat(response.getStatusLine().getStatusCode(), equalTo(200));
    client.close();
}