Question

我有一个WCF restful服务，因为我有一个POST方法。从android客户端调用它时，参数对象在WCF方法上始终为null。下面是android和WCF服务的代码。

WCF接口：

   [OperationContract(Name = "datetime1")]        
    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat =   WebMessageFormat.Json, UriTemplate = "datetime1", BodyStyle = WebMessageBodyStyle.Wrapped)]
    ResponseMessage GetResponse(RequestData req);

WCF方法实施：

public ResponseMessage GetResponse(RequestData req)
    {
        string s = req == null ? "Yes" : "No";
        ResponseMessage msg = new ResponseMessage()
        {
            DateTime = DateTime.Now.ToShortDateString(),
            Error = "none",
            hoursLeft = 5,
            IsTrialExpired = false,
            Response = "My Response " + s,
            token = "token here"
        };
        return msg;
    }

Android客户端，调用代码：

RequestData requestData = new RequestData("1","2","3","4");
JSONStringer req = new JSONStringer();
    try {
        req.object()
                .key("UserId").value(requestData.getUserId())
                .key("AppId").value(requestData.getAppId())
                .key("ThirdParty").value(requestData.getThirdParty())
                .key("UserToken").value(requestData.getUserToken())
                .endObject();
    } catch (JSONException e) {
        e.printStackTrace();
    }

String url = "<my method url>";

//instantiates httpClient to make request
        HttpClient httpClient = new DefaultHttpClient();

        //url with the post data
        HttpPost httPost = new HttpPost(url);

        //passes the results to a string builder/entity
        StringEntity se = new StringEntity(req);

        //sets the post request as the resulting string
        httPost.setEntity(se);
        httPost.setHeader("Accept", "application/json");
        httPost.setHeader("Content-type", "application/json");


        HttpResponse httpresponse = httpClient.execute(httPost);

        InputStream inputStream = httpresponse.getEntity().getContent();
        if (inputStream != null) {
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));

            while ((line = bufferedReader.readLine()) != null)
                res += line;

            inputStream.close();
        }
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return res;

请求JSon：

{"UserId":"1","AppId":"2","ThirdParty":"3","UserToken":"4"}

回应JSon：

{"datetime1Result":{"DateTime":"7\/31\/2014","Error":"none","IsTrialExpired":false,"Response":"My Response Yes","hoursLeft":5,"token":"token here"}}

注意：注意响应字符串中的“是”，这是因为对象为空。

我的RequestData类：

[DataContract]
public class RequestData
{
    [DataMember]
    public string UserId { get; set; }

    [DataMember]
    public string AppId { get; set; }

    [DataMember]
    public string ThirdParty { get; set; }

    [DataMember]
    public String UserToken { get; set; }
}

我做错了什么???

Answer 1

更改JSONStringer的引用名称。 JSONStringer和StringEntity的引用名称（req）都相同

参数始终为null WCF post方法

1 个答案: