How can I Post for example this information of below to this website "http://restapi.adequateshop.com/api/Tourist"
by C# code?
tourist_name: "dummy"
tourist_email: "test123#test.com"
tourist_location: "Paris"
static void Main(string[] args)
{
//create the constructor with post type and few data
string data = "tourist_name=Mike&tourist_email=miked123#gmail.com&tourist_location=Paris";
MyWebRequest myRequest = new MyWebRequest("http://restapi.adequateshop.com/api/Tourist", "POST", data);
//show the response string on the console screen.
string Response = myRequest.GetResponse();
}
You can put your data in a new class :
class RequestData
{
string tourist_name { get; set; }
string tourist_email { get; set; }
string tourist_location { get; set; }
}
Then you can serialize your object to JSON:
RequestData requestData = new RequestData();
requestData.tourist_name ="Mike";
requestData.tourist_email ="miked123#gmail.com";
requestData.tourist_location ="Paris";
string jsonData = JsonConvert.SerializeObject(requestData);
Then send your JSON to API
string URL="http://restapi.adequateshop.com/api/Tourist";
var jsonContent = new StringContent(jsonData,Encoding.UTF8,"application/json");
var result = client.PostAsync(URL,jsonContent).Result;
I hope this answers your question.
Related
globally, I have the following object:
public class Geraet
{
public long Geraetenr { get; set; }
public int Typ { get; set; }
public string Platz { get; set; }
public string Bezeichnung { get; set; }
public int Tr { get; set; }
public string Ip { get; set; }
public string Bespielt { get; set; }
}
I populate a list of those objects, serialize them and send them via webservice:
[HttpGet]
public IHttpActionResult Get_Feedback()
{
List<Geraet> geraeteliste = null;
try
{
geraeteliste = GetSpielgeraeteFromDatabase();
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
if (geraeteliste == null)
{
return Ok("No record found!");
}
else
{
var json = Newtonsoft.Json.JsonConvert.SerializeObject(geraeteliste);
return Json(json);
}
}
The data received by webservice looks like the following:
"[{\"Geraetenr\":123456789,\"Typ\":61,\"Platz\":\"1-01\",\"Bezeichnung\":\"CSII ADM430\",\"Tr\":3,\"Ip\":\"123.123.123.123\",\"Bespielt\":\"0\"},{\"Geraetenr\":987654321,\"Typ\":61,\"Platz\":\"2-12\",\"Bezeichnung\":\"M-BOX PUR+ GOLD\",\"Tr\":3,\"Ip\":\"124.124.124.124\",\"Bespielt\":\"0\"}]"
In my Xamarin App, I have the same object given above and trying to deserialize it:
private List<Geraet> GetSpielgeraeteFromWebservice()
{
List<Geraet> geraeteliste;
var request = HttpWebRequest.Create(Constants.GeraetelistServicePath);
request.ContentType = "application/json";
request.Method = "GET";
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
var json = reader.ReadToEnd();
geraeteliste = JsonConvert.DeserializeObject<List<Geraet>>(json);
}
}
return geraeteliste;
}
Unfortunately, I get an runtime error in the line geraeteliste = JsonConvert.DeserializeObject<List<Geraet>>(json); saying:
Unhandled Exception:
Newtonsoft.Json.JsonSerializationException: Error converting value "[{"Geraetenr":123456789,"Typ":61,"Platz":"1-01","Bezeichnung":"CSII ADM430","Tr":3,"Ip":"123.123.123.123","Bespielt":"0"},{"Geraetenr":987654321,"Typ":61,"Platz":"2-12","Bezeichnung":"M-BOX PUR+ GOLD","Tr":3,"Ip":"124.124.124.124","Bespielt":"0"}]" to type 'System.Collections.Generic.List`1[GroceryList.Classes.Geraet]'. Path '', line 1, position 3421.
The sending / retrieving stuff does work, otherwise error message would be in the line var json = reader.ReadToEnd(); or I wouldn't have gotten the right values in the error message. So something with the deserialization does not work.
Can anyone maybe help and tell me what is or could be the problem? Why can't he convert? It is the right order and the right values?
Best regards
We are using 3rd party api kraken.io to optimize our images.
The results of optimized image is posted in a Webhook.
In their api document it states: After the optimization is over Kraken will POST a message to the callback_url specified in your request in a JSON format application/json.
I am using ngrok to allow remote webhooks to send data to my development machine, using this article.
Results posted to the Callback URL:
HTTP/1.1 200 OK
{
"id": "18fede37617a787649c3f60b9f1f280d",
"success": true,
"file_name": "header.jpg",
"original_size": 324520,
"kraked_size": 165358,
"saved_bytes": 159162,
"kraked_url": "http://dl.kraken.io/18/fe/de/37617a787649c3f60b9f1f280d/header.jpg"
}
Class to Map
public class KrakenOptimizedResults
{
public string id { get; set; }
public bool success { get; set; }
public string file_name { get; set; }
public int original_size { get; set; }
public int kraked_size { get; set; }
public int saved_bytes { get; set; }
public string kraked_url { get; set; }
}
Action Method
[HttpPost]
public ActionResult OptimizedWebHook()
{
Request.InputStream.Position = 0;
string jsonString = new System.IO.StreamReader(Request.InputStream).ReadToEnd();
KrakenOptimizedResults obj = new JavaScriptSerializer().Deserialize<KrakenOptimizedResults>
(jsonString);
return Json(obj);
}
But When I debug the received jsonString in Html Visualizer it looks like key and value pairs instead of Json format.
Received Results not Json Formatted:
file_name=header.jpeg&original_size=118066&kraked_size=102459&saved_bytes=15607
I guess the received data content-type: is application/x-www-form-urlencoded.
Why i am receiving key and value pairs instead of Json format ? how can I deserialize Json data in asp.net mvc ?
Co-founder of https://kraken.io here.
There is a glaring omission in our documentation which I will fix today. To get JSON back, you need to set a "json": true flag in the request. Omitting that flag or setting "json": false will return URLEncoded. Example cURL request:
curl http://api.kraken.io/v1/upload -X POST --form data='{"auth":{"api_key":"YOUR_KEY", "api_secret":"YOUR_SECRET"}, "wait": true, "lossy": true, "callback_url": "http://requestb.in/wbhi63wb", "json": true}' --form upload=#test.jpg
Sorry for the inconvenience :-(
I was able to convert Query String Key and Value pairs to Json Format using this and this post ,there is some delay to convert form Dictionary to Json, so If there is better answers, then do post and advice, below is my solution.
Action Method
[HttpPost]
public ActionResult OptimizedWebHook()
{
Request.InputStream.Position = 0;
string data = new System.IO.StreamReader(Request.InputStream).ReadToEnd();
var dict = HttpUtility.ParseQueryString(data);
var json = new JavaScriptSerializer().Serialize(dict.AllKeys.ToDictionary(k => k, k =>
dict[k]));
KrakenOptimizedResults obj = new JavaScriptSerializer().Deserialize<KrakenOptimizedResults>
(json);
return Json(obj);
}
Recieving JSON formated optimized results from kraken API.
As mentioned by #karim79, To get JSON back, you need to set a "json": true flag in the request.
As Kraken .Net/C# SDK didn't have option to set "json": true, so i have to extend their base class.
Extended Base Class:
public class OptimizeRequestBaseExtended : OptimizeRequestBase,
IOptimizeUploadRequest, IRequest
{
public OptimizeRequestBaseExtended(Uri callbackUrl)
{
CallbackUrl = callbackUrl;
}
[JsonProperty("callback_url")]
public Uri CallbackUrl { get; set; }
[JsonProperty("json")]
public bool JsonFormat { get; set; }
}
Request Kraken API:
var callbackUrl = new Uri("http://localhost:0000/Home/OptimizedWebHook");
OptimizeRequestBaseExtended settings = new OptimizeRequestBaseExtended(callbackUrl);
settings.Lossy = true;
settings.JsonFormat = true;
var response = client.Optimize(image: image, filename: filename, optimizeRequest: settings);
Action Method
[HttpPost]
public ActionResult OptimizedWebHook()
{
Request.InputStream.Position = 0;
string jsonString = new System.IO.StreamReader(Request.InputStream).ReadToEnd();
KrakenOptimizedResults obj = JsonConvert.DeserializeObject<KrakenOptimizedResults>
(jsonString);
return Json(obj);
}
Step 1:
Create an aspx page. This page must be able to accept HTTP POST request.
Step 2:
Add this code to get HTTP POST data.File: default.aspx.cs
File: default.aspx.cs
var reader = new StreamReader(Request.InputStream);
var json = reader.ReadToEnd();
FileStream ostrm;
StreamWriter writer;
TextWriter oldOut = Console.Out;
ostrm = new FileStream(#"C:\logfile4webhook.txt", FileMode.Append, FileAccess.Write);
writer = new StreamWriter(ostrm);
Console.SetOut(writer);
Console.Write(DateTime.Now + " ");
Console.WriteLine(json.ToString() + " ");
Console.SetOut(oldOut);
writer.Close();
ostrm.Close();
Step 3:
Create webhook. This code can be linked to a button on click event.File:default.aspx.cs
AuthenticationDetails auth = new ApiKeyAuthenticationDetails("your api key");
string listID = "";
listID = "your list id";
List list = new List(auth, listID);
List<string> events = new List<string>();
events.Add("Update");
string postback = list.CreateWebhook(events, "URL", "json");
FileStream ostrm;
StreamWriter writer;
TextWriter oldOut = Console.Out;
ostrm = new FileStream(#"C:\logfile4webhook.txt", FileMode.Append, FileAccess.Write);
writer = new StreamWriter(ostrm);
Console.SetOut(writer);
Console.Write(DateTime.Now + " ");
Console.WriteLine(postback + " ");
Console.SetOut(oldOut);
writer.Close();
ostrm.Close();
Step 4:
Activate webhook. Copy that webhook id from the text file and past it to the code below.
File:default.aspx.cs
AuthenticationDetails auth = new ApiKeyAuthenticationDetails("your api key");
string listID = "";
listID = "your list id";
List list = new List(auth, listID);
list.ActivateWebhook("webhook id");
Step 5:
Test weebhook.File: default.aspx.cs
AuthenticationDetails auth = new ApiKeyAuthenticationDetails("your api key");
string listID = "";
listID = "your list id";
List list = new List(auth, listID);
string postback = list.TestWebhook("webhook id").ToString();
FileStream ostrm;
StreamWriter writer;
TextWriter oldOut = Console.Out;
ostrm = new FileStream(#"C:\logfile4webhook.txt", FileMode.Append, FileAccess.Write);
writer = new StreamWriter(ostrm);
Console.SetOut(writer);
Console.Write(DateTime.Now + " ");
Console.WriteLine(postback + " ");
Console.SetOut(oldOut);
writer.Close();
ostrm.Close();
Step 6:
Deserialize body of JSON object. We need to create class structure based on JSON data. I put sample json here and it created required classes
public class CustomField
{
public string Key { get; set; }
public string Value { get; set; }
}
public class Event
{
public List<CustomField> CustomFields { get; set; }
public string Date { get; set; }
public string EmailAddress { get; set; }
public string Name { get; set; }
public string SignupIPAddress { get; set; }
public string Type { get; set; }
}
public class RootObject
{
public List<Event> Events { get; set; }
public string ListID { get; set; }
}
Once you have created your class, append the code from step 2 after
var json = reader.ReadToEnd();
to deserialize and parse json.
RootObject myClass = JsonConvert.DeserializeObject(json);
if (myClass != null)
{
List<Event> t = myClass.Events;
string old_email = "", new_email = "";
old_email = t[0].OldEmailAddress;
new_email = t[0].EmailAddress;
//now you can do your logic with old_email and new_email
}
I have a question about inserting a json formatted string into a json structure and having the final version be a combined JSON formatted string that can be serialized into a JSON structure. I am using the newtonsofts Json.NET
I have the following JSON structure:
public class ResponseJson
{
[JsonProperty(PropertyName = "header")]
public ResponseHeader responseHeader { get; set; }
[JsonProperty(PropertyName = "results")]
public string responseResults { get; set; }
}
public class ResponseHeader
{
[JsonProperty(PropertyName = "name")]
public string name { get; set; }
[JsonProperty(PropertyName = "version")]
public string version { get; set; }
}
In the code, I do the following:
ResponseJson responseJson = new ResponseJson();
responseJson.responseHeader = new ResponseHeader()
{
name = A_NAME,
version = A_VERSION
};
responseJson.responseResults = resultJson;
return JsonConvert.SerializeObject(responseJson, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
resultJson is a properly formatted JSON string (in this case, an array of objects, but could be anything JSON formatted). Right now, if i execute the code, I get the following (which is expected, since "results" is declared as a string):
{
"header":
{
"name":"abcd",
"version":"1.0"
},
"results":
"[{\"data\":{\"level\":\"100\"},\"code\":{\"value\":\"JBC\",\"type\":\"ev\"},\"time\":{\"start\":\"20\",\"end\":\"101\"}}]"
}
what I do need as an output is:
{
"header":
{
"name":"abcd",
"version":"1.0"
},
"results":
[
{
"data":
{
"level":"100"
},
"code":
{
"value":"JBC",
"type":"ev"
},
"time":
{
"start":"20",
"end":"101"
}
}
]
}
While you don't explain how you create your resultJson variable, it's implied from your code that you are double-serializing your results: you compute an array of "result" classes, serialize them to a JSON string, store the string in your ResponseJson class, and them serialize that in turn. The embedded JSON string then gets escaped as per the JSON standard, which is what you are seeing.
You need to avoid double-serializing your data, for instance by using the following data model:
public class ResponseJson<T>
{
[JsonProperty(PropertyName = "header")]
public ResponseHeader responseHeader { get; set; }
[JsonProperty(PropertyName = "results")]
public T responseResults { get; set; }
}
public static class ResponseJson
{
public static ResponseJson<T> Create<T>(T responseResults, ResponseHeader responseHeader)
{
return new ResponseJson<T> { responseResults = responseResults, responseHeader = responseHeader };
}
}
public class ResponseHeader
{
[JsonProperty(PropertyName = "name")]
public string name { get; set; }
[JsonProperty(PropertyName = "version")]
public string version { get; set; }
}
Then you would do:
var results = GetResults(); // Get your result data
var responseJson = ResponseJson.Create(results, new ResponseHeader()
{
name = A_NAME,
version = A_VERSION
});
return JsonConvert.SerializeObject(responseJson, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
If for whatever reason you must embed a previously serialized JSON string as JSON rather than as a string literal, you'll need to re-parse it back to a JToken:
string resultJson = GetResultJson(); // Get result json string.
var responseJson = ResponseJson.Create(JToken.Parse(resultJson), new ResponseHeader()
{
name = A_NAME,
version = A_VERSION
});
return JsonConvert.SerializeObject(responseJson, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
Json.NET will include the JToken in your outer JSON as nested JSON rather than as a string literal.
I am having some problems getting my ASP.NET MVC application to parse my model, i simply just get "null".
This is my ASP.NET MVC action
public AdobeReturnSet<UserModel> Post([FromBody]UserModel model)
I have also tried without the [FromBody], that did not help.
This is my model
public class UserModel
{
public int AdobeId { get; set; }
[Required]
[StringLength(500)]
public string FristName { get; set; }
[Required]
[StringLength(500)]
public string LastName { get; set; }
[Required]
[StringLength(250)]
[EmailAddress]
public string Email { get; set; }
[Required]
public string OrganizationIdentification { get; set; }
public string Organization { get; set; }
public string OrganizationFull { get; set; }
}
And this is how i send the request
using (WebClient wc = new WebClient())
{
wc.Headers[HttpRequestHeader.Accept] = "application/json";
wc.Headers[HttpRequestHeader.AcceptCharset] = "utf-8";
wc.Headers[HttpRequestHeader.ContentType] = "application/json";
result = wc.UploadString(url, "POST", data);
}
The url is correct as the correct action is reached and this is the value of data:
{"AdobeId":0,"FristName":"Kasper Rune","LastName":"Søgaard","Email":"krus#arcanic.dk","OrganizationIdentification":null,"Organization":null,"OrganizationFull":null}
But when the request reaches my action is the model simply null.
It is a ApiController if that changes anything.
Looks like an encoding problem. Try using the UploadData method instead and use UTF-8 encoding:
using (var wc = new WebClient())
{
var data = Encoding.UTF8.GetBytes(#"{""AdobeId"":0,""FristName"":""Kasper Rune"",""LastName"":""Søgaard"",""Email"":""krus#arcanic.dk"",""OrganizationIdentification"":null,""Organization"":null,""OrganizationFull"":null}");
wc.Headers[HttpRequestHeader.Accept] = "application/json";
wc.Headers[HttpRequestHeader.ContentType] = "application/json";
byte[] result = wc.UploadData(url, "POST", data);
string json = Encoding.UTF8.GetString(result);
}
Alternatively you could use the new HttpClient:
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.ConnectionClose = true;
var value = new
{
AdobeId = 0,
FristName = "Kasper Rune",
LastName = "Søgaard",
Email = "krus#arcanic.dk",
};
var result = client.PostAsJsonAsync(url, value).Result;
if (result.IsSuccessStatusCode)
{
string json = result.Content.ReadAsStringAsync().Result;
}
}
Also you might have a typo at FristName which should probably be FirstName.
{"names":["name1","name2","name3","name4"]}
I need to fetch this and show them in a list. What I am doing is
public class brand
{ public string Name
{ get; set; }
}
public class brands
{ public list<brand> Names
{ get; set; }
}
public partial class MainPage : PhoneApplicationPage
{
// Constructor
public MainPage()
{
InitializeComponent();
getdata();
}
private void getdata()
{
string uri = "URL";
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(new Uri(uri));
req.BeginGetResponse(new AsyncCallback(show), req);
}
private void show(IAsyncResult asynchronousResult)
{
HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState;
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asynchronousResult);
StreamReader stream1 = new StreamReader(response.GetResponseStream());
string s1 = stream1.ReadToEnd();
var ser = new DataContractJsonSerializer(typeof(brands));
var stream = new MemoryStream(Encoding.Unicode.GetBytes(s1));
var bb = (brands)ser.ReadObject(stream);
foreach (var ev in bb.Names)
{
textBlock1.Text = ev.Name.ToString();
}
}
This I made after reading blog posts. I am getting NullReferenceException.
Please tell me where I am doing wrong or alternative way to do the same.
First learn how to parse your JSON data. Consider this as a json string.
String jsonData = #"{""names"":[""name1"",""name2"",""name3"",""name4""]}";
var brands = JsonConvert.DeserializeObject<Brands>(jsonData);
foreach (var item in brands.names)
{
Console.WriteLine(item);
}
Where your Brands class is like this
public class Brands
{
public List<string> names { get; set; }
}
This above code explains how to parse your json data. Now, coming to fetching your json data from web service, as your request is not a POST request (it appears to be get from your code), you can use a simple WebCleint.
void getData()
{
WebClient webClient = new WebClient();
webClient.DownloadStringCompleted += new DownloadStringCompletedEventHandler(webClient_DownloadStringCompleted);
webClient.DownloadStringAsync(new Uri("url"));
}
void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
var brands = JsonConvert.DeserializeObject<Brands>(e.Result);
foreach (var item in brands.names)
{
Console.WriteLine(item);
}
}
Check this blog for any other doubts : Parsing JSON in a Windows Phone Application