从Restroid调用Restful WCF POST方法对象作为参数

Question

我正在研究Android应用程序，在调用我的＆＃34; POST＆＃34;时遇到问题从Android应用程序请求wcf RESTful服务。

这是我的wcf服务：

[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = "finalProductList", RequestFormat = WebMessageFormat.Json,BodyStyle = WebMessageBodyStyle.Bare)]
string finalProductList(Productdetails[] objprod);

public string finalProductList(Productdetails[] objprod)
        {
            try
            {
                BasicConfigurator.Configure();
                log.Info("finalProductList method fired ");
                StringBuilder sb = new StringBuilder();
                sb.Append("\"jsonResult\":[");
                int result = 0;
                string json = objprod.ToString();
                JObject rss = JObject.Parse(json);
                JArray items = (JArray)rss["finalProductList"];
                for (int i = 0; i < items.Count; i++)
                {
                    string Merchantid = string.Empty;
                    string MerchantName = string.Empty;
                    alperm.Clear();
                    alperm.Add(new SqlParameter("@Merchantid", (string)rss["finalProductList"][i]["merchant_id"]));
                    alperm.Add(new SqlParameter("@MerchantName", (string)rss["finalProductList"][i]["merchant_name"]));
                    result = SqlHelper.ExecuteNonQuery(sqlConnection, CommandType.StoredProcedure, "Sp_InsProductDetails", (SqlParameter[])alperm.ToArray(typeof(SqlParameter)));
                }
                if (result == 1)
                {
                    sb.Append("{\"success\": true" + ",\"message\":Data Inserted Successfully!}]");
                    return sb.ToString();
                }
                else
                {
                    sb.Append("{\"success\": false" + ",\"message\":No input data retrived!}]");
                    return sb.ToString();
                }
            }
            catch (Exception ex)
            {
                log.Error("finalProductList : Error while inserting producet details: " + ex);
                throw;
            }
        }

Android代码：

HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(URL);

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("data", jsonStr));

httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

ResponseHandler<String> responseHandler = new BasicResponseHandler();
response = httpclient.execute(httppost, responseHandler);
System.out.println("Response : " + response)

我在wcf方法中启用徽标。当我从Android应用程序调用wcf方法时，这个方法没有被解雇并在android中出错：

 W/System.err(1603): org.apache.http.client.HttpResponseException: Bad Request