.NET Web Service: System.InvalidOperationException: Missing parameter:

Context:

.NET Web Service

Apache HttpClient

Problem:

When I tried to call the service as follows from my JUnit Test

HttpPost post = new HttpPost("http://localhost:1287/service.asmx/SubmitZip");
post.addHeader("Content-Type", "application/x-www-form-urlencoded");

MultipartEntity entity = new MultipartEntity();

entity.addPart("b64zip", new StringBody(new String(Base64.encodeBase64(IOUtils.toByteArray(submissionStream)))));

post.setEntity(entity);

I got this error:

System.InvalidOperationException: Missing parameter: b64zip.

   at System.Web.Services.Protocols.ValueCollectionParameterReader.Read(NameValueCollection collection)

   at System.Web.Services.Protocols.HtmlFormParameterReader.Read(HttpRequest request)

   at System.Web.Services.Protocols.HttpServerProtocol.ReadParameters()

   at System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()

Solution:


To fix it, I needed to call it as follows:


List<BasicNameValuePair> nameValuePairs = new ArrayList<BasicNameValuePair>(1);

nameValuePairs.add(new BasicNameValuePair("b64zip", new String(Base64.encodeBase64(IOUtils.toByteArray(submissionStream)))));

post.setEntity(new UrlEncodedFormEntity(nameValuePairs));