android 中的授权类型不支持错误 unsupported_grant_type？

Question

我正在尝试在发布请求中使用参数调用服务，我的参数是 grant_type="password"、username="XXXXXX"、password="yyyyyyy" 并且我得到了像 {"error":"unsupported_grant_type"} 这样的异常

我在这里发送如下请求

String uri = Uri.parse(ServiceUrl.LOGIN_SERVER_URL)
                        .buildUpon()
                        .appendQueryParameter("grant_type","password")
                        .appendQueryParameter("username",userName.getText().toString().trim())
                        .appendQueryParameter("password", urlEncoded)
                        .build().toString();

我的调用服务代码以获取服务响应：

@SuppressWarnings("deprecation")
    public static String httpPostQueryParamService(String Url) {

        String serveresponse = null;
        try {

        HttpParams httpParams = new BasicHttpParams();
            HttpConnectionParams.setConnectionTimeout(httpParams,
                    ServiceUrl.timeoutConnection);
            // Set the default socket timeout (SO_TIMEOUT)
            // in milliseconds which is the timeout for waiting for data.
            HttpConnectionParams.setSoTimeout(httpParams,
                    ServiceUrl.timeoutSocket);
            HttpClient client = new DefaultHttpClient(httpParams);
            HttpPost request = new HttpPost(Url);

        request.addHeader("Content-Type","application/x-www-form-urlencoded");


            HttpResponse response = client.execute(request);
            HttpEntity responseEntity = response.getEntity();
            serveresponse = EntityUtils.toString(responseEntity);
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_BAD_GATEWAY) {

                serveresponse = null;
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return serveresponse;
        }

Answer 1

我相信你需要像这样将这些东西添加到方法体中：

urlConnection.setDoOutput(true); 

// Add the body
DataOutputStream wr = new DataOutputStream(urlConnection.getOutputStream());
wr.writeBytes("&grant_type=password&username=username&password=password");
wr.flush(); 
wr.close();