# How to consume JSON RO Web services?
**URL:** https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354
**Category:** Data Abstract
**Created:** [June 10, 2015, 4:14am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354 "2015-06-10T04:14:46Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@wilson](https://talk.remobjects.com/u/wilson)
#### Post date: [June 10, 2015, 4:14am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/1 "2015-06-10T04:14:46Z")
Hi,
refer to the document [http://wiki.remobjects.com/wiki/WIP:How\_to\_consume\_RemObjects\_SOAP\_services\_with\_third\_party\_clients](http://wiki.remobjects.com/wiki/WIP:How_to_consume_RemObjects_SOAP_services_with_third_party_clients)
i manage to consume the soap services, would like to check how about the JSON ? i have add in the JSON message type in to server channel. Below is my test in client program:
protected void btnSoap\_Click(object sender, EventArgs e)
{
System.ServiceModel.Channels.Binding b = (System.ServiceModel.BasicHttpBinding)Activator.CreateInstance(typeof(System.ServiceModel.BasicHttpBinding));
System.ServiceModel.EndpointAddress eAddress = new System.ServiceModel.EndpointAddress(“[http://localhost:8099/soap](http://localhost:8099/soap)”);
```
soapServices.ROServer1ServiceClient iTest = new soapServices.ROServer1ServiceClient(b, eAddress);
var msgHeader = new soapServices.ROClientIDHeader();
msgHeader.ID = String.Concat("{", Guid.NewGuid().ToString(), "}");
var result = iTest.GetServerTime(ref msgHeader);
txtResultSOAP.Text = result.ToString();
}
```
Thanks.
---
### Author:  [@antonk](https://talk.remobjects.com/u/antonk)
#### Post date: [June 10, 2015, 8:51am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/2 "2015-06-10T08:51:18Z")
You’d need to compose a requiest JSON string, send it to the server at http://[servername]:[serverport]/json (using .NET WebClient or similar class), then get back a response JSON string and parse it.
[http://json2csharp.com/](http://json2csharp.com/) can help you to generate .NET classes that match the provided JSON string.
Requested JSON string formats can be viewed using Fiddler: create RO SDK client and server and inspect the traffic between them using this awesome tool.
---
### Author:  [@wilson](https://talk.remobjects.com/u/wilson)
#### Post date: [June 11, 2015, 7:52am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/3 "2015-06-11T07:52:16Z")
Hi, we use the sample server, JSON message, when i consume the services,
[http://localhost:8099/json/sum?a=11&b=22](http://localhost:8099/json/sum?a=11&b=22)
should expect below result
{“version”:“1.1”,“result”:“33”}
but it return error as below:
Server Error
The following error occurred:
500 Invalid path specified: ‘/json/sum?a=1&b=2’.
at RemObjects.SDK.Server.IpHttpServerChannel.HandleHttpRequest(Object sender, HttpRequestEventArgs e)
Framework Version v4.0.30319.34209
RemObjects SDK for .NET v8.3.91.1167
Internet Pack for .NET v8.3.91.1167
RemObjects Software, LLC. [remobjects.com](http://remobjects.com).
---
### Author:  [@antonk](https://talk.remobjects.com/u/antonk)
#### Post date: [June 11, 2015, 9:03am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/4 "2015-06-11T09:03:41Z")
Requests where parameters are passed via URL are not supported. You need to pass the request JSON string via request body, not its Url
---
### Author:  [@wilson](https://talk.remobjects.com/u/wilson)
#### Post date: [June 12, 2015, 4:51am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/5 "2015-06-12T04:51:03Z")
Hi, i have done some research and most of the way is using URL. Anywhere, i have try to code as below to get the JSON data back, but the server return error. Or might be can you give some code to show how it work ?
```
protected void btnServerDateTimeJSON_Click(object sender, EventArgs e)
{
string urlPath = "http://localhost:8099/json/SUM";
string data = "A=11&B=22"; //replace
byte[] dataStream = Encoding.UTF8.GetBytes(data);
WebRequest webRequest = WebRequest.Create(urlPath);
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.ContentLength = dataStream.Length;
Stream newStream = webRequest.GetRequestStream();
// Send the data.
newStream.Write(dataStream, 0, dataStream.Length);
newStream.Close();
using (var httpWebResponse = webRequest.GetResponse() as HttpWebResponse)
{
if (httpWebResponse != null)
{
using (var streamReader = new StreamReader(httpWebResponse.GetResponseStream()))
{
txtResultJSON.Text = streamReader.ReadToEnd();
}
}
}
}
```
---
### Author:  [@antonk](https://talk.remobjects.com/u/antonk)
#### Post date: [June 12, 2015, 7:26am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/6 "2015-06-12T07:26:21Z")
Server expexts a JSON string in the request body. Like f.e.
```
{"version":"1.1","method":"ROServer2Service.Sum","params":{"A":3,"B":4}}
```
Then response will be, f.e.
```
{"version":"1.1","result":7}
```
---
### Author:  [@wilson](https://talk.remobjects.com/u/wilson)
#### Post date: [June 15, 2015, 6:36am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/7 "2015-06-15T06:36:00Z")
the correct JSON response from server is
{“version”:“1.1”,“result”:{“Result”:33},“id”:"{fe1fe652-bc39-4f25-b66a-b5511c3150e7}"}
for those interested on .net client to read it, you can refer to below code:
c# .net
var jsonResult = new JavaScriptSerializer().Deserialize(result);
txtResultJSONGetSum.Text = (jsonResult[“result”][“Result”]).ToString();
Thanks.
---
### Author:  [@antonk](https://talk.remobjects.com/u/antonk)
#### Post date: [June 15, 2015, 7:08am UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/8 "2015-06-15T07:08:47Z")
> [@wilson](#):
>
> “version”:“1.1”
This is the JSON message version. Assume it always be 1.1
> [@wilson](#):
>
> “id”:“{fe1fe652-bc39-4f25-b66a-b5511c3150e7}”
This is the remote session Id. Can be useful for authorization tasks.
> [@wilson](#):
>
> “result”:{“Result”:33}
Data payload (server method result).
One can use tools like [http://json2csharp.com/](http://json2csharp.com/) to convert JSON strings into corresponding C# data structures.
---
### Author:  [@DonaldShimoda](https://talk.remobjects.com/u/DonaldShimoda)
#### Post date: [December 11, 2018, 2:29pm UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/9 "2018-12-11T14:29:26Z")
> [@antonk](#):
>
> {“version”:“1.1”,“method”:“ROServer2Service.Sum”,“params”:{“A”:3,“B”:4}}
Any way to get that working as a standard json call?
[http://localhost:8099/json/ROServer2Service/Sum/3/4](http://localhost:8099/json/ROServer2Service/Sum/3/4)
Best regards
---
### Author:  [@antonk](https://talk.remobjects.com/u/antonk)
#### Post date: [December 11, 2018, 2:47pm UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/10 "2018-12-11T14:47:45Z")
Yes. You need to use HttpAPI: [https://talk.remobjects.com/t/new-ro-sdk-feature-http-api/12993](https://talk.remobjects.com/t/new-ro-sdk-feature-http-api/12993)
---
### Author:  [@EvgenyK](https://talk.remobjects.com/u/EvgenyK)
#### Post date: [December 11, 2018, 2:51pm UTC](https://talk.remobjects.com/t/how-to-consume-json-ro-web-services/6354/11 "2018-12-11T14:51:46Z")
another way:
you can transform this string into valid json request in [HTTPServer.OnCustomResponseEvent](https://docs.remotingsdk.com/API/Delphi/Classes/TROBaseHTTPServer/#OnCustomResponseEvent) event.
see more at [Using OnCustomResponseEvent in a ROSDK Server](https://talk.remobjects.com/t/using-oncustomresponseevent-in-a-rosdk-server/6767) snippet