HttpClient myClient = new HttpClient();
myClient.BaseAddress = new Uri(URL);
Base address already specified on client it's URL.
var encodedObject = JsonConvert.SerializeObject(Obj);
myClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage response = await myClient.PostAsync("test.php/yourAPI",new StringContent(encodedObject, System.Text.Encoding.UTF8, "application/json"));
if (response.IsSuccessStatusCode)
{
var responseContent = response.ToString();
var responsebody = response.Content.ToString();
Stream receiveStream = response.GetResponseStream();
string responseBodyAsText = response.Content.ReadAsStringAsync().Result;
}
Could be a content negotiation issue. Try clearing the Accept header before adding the json media type
myClient.DefaultRequestHeaders.Accept.Clear();
myClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
//...other code removed for brevity.
this code sets the Accept header to "application/json", which tells the server to send data in JSON format.
Reference source: Calling a Web API From a .NET Client in ASP.NET Web API 2
the Method PostAsync has as first argument the complete URI of The API. Therefore, it should be like follow :
HttpResponseMessage response = await myClient.PostAsync("http://bla-bla-bla/test.php/test",new StringContent(encodedObject, System.Text.Encoding.UTF8, "application/json"));
And there is no need to define the BaseAddress.
Related
I'm looking for a way to convert Office files to PDF.
I found out that Microsoft Graph could be used.
I'm trying to download converted PDF using Microsoft Graph from OneDrive.
I'd like to convert .docx to .pdf.
However, when I sent the following request, I did not receive a response even if I waited.
GET https://graph.microsoft.com/v1.0/users/{id}/drive/root:/test.docx:/content?format=pdf
Also, the error code is not returned.
If syntax is wrong, an error code will be returned as expected.
It will not return only when it is correct.
In addition, I can download the file if I do not convert.
GET https://graph.microsoft.com/v1.0/users/{id}/drive/root:/test.docx:/content
Is my method wrong or else I need conditions?
If possible, please give me sample code that you can actually do.
using (HttpClient client = new HttpClient())
{
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", authResult.AccessToken);
client.BaseAddress = new Uri(graphUrl);
var result = await client.GetAsync("/v1.0/users/xxxxxxxxxxxxxxxxxxxxxxxxx/drive/root:/test.docx:/content?format=pdf");
:
I would like to elaborate a bit Marc's answer by providing a few examples for HttpClient.
Since by default for HttpClient HttpClientHandler.AllowAutoRedirect property is set to True there is no need to explicitly follow HTTP redirection headers and the content could be downloaded like this:
using (HttpClient client = new HttpClient())
{
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
client.BaseAddress = new Uri("https://graph.microsoft.com");
var response = await client.GetAsync($"/v1.0/drives/{driveId}/root:/{filePath}:/content?format=pdf");
//save content into file
using (var file = System.IO.File.Create(fileName))
{
var stream = await response.Content.ReadAsStreamAsync();
await stream.CopyToAsync(file);
}
}
In case if follow HTTP redirection is disabled, to download the converted file, your app must follow the Location header in the response as demonstrated below:
var handler = new HttpClientHandler()
{
AllowAutoRedirect = false
};
using (HttpClient client = new HttpClient(handler))
{
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
client.BaseAddress = new Uri("https://graph.microsoft.com");
var response = await client.GetAsync($"/v1.0/drives/{driveId}/root:/{filePath}:/content?format=pdf");
if(response.StatusCode == HttpStatusCode.Redirect)
{
response = await client.GetAsync(response.Headers.Location); //get the actual content
}
//save content into file
using (var file = System.IO.File.Create(fileName))
{
var stream = await response.Content.ReadAsStreamAsync();
await stream.CopyToAsync(file);
}
}
The API doesn't return the converted content directly, it returns a link to the converted file. From the documentation:
Returns a 302 Found response redirecting to a pre-authenticated download URL for the converted file.
To download the converted file, your app must follow the Location header in the response.
Pre-authenticated URLs are only valid for a short period of time (a few minutes) and do not require an Authorization header to access.
You need to capture the 302 and make a 2nd call to the URI in the Location header in order to download the converted file.
While trying to create a Test Suite using TFS 2017 REST API, I am getting the error:
System.Net.Http.HttpRequestException - Response status code does not
indicate success: 500 (Internal Server Error)
Code I tried:
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
string base64StringPat = Convert.ToBase64String(ASCIIEncoding.ASCII.GetBytes(string.Format("{0}:{1}", "", Configs.Pat)));
AuthenticationHeaderValue authHeader = new AuthenticationHeaderValue("Basic", base64StringPat);
client.DefaultRequestHeaders.Authorization = authHeader;
string url = "http://vmctp-tl-mtm:8080/tfs/DefaultCollection/SgkProject/_apis/test/Plans/7/Suites/8?api-version=1.0";
var content = new StringContent("{\"suiteType\":\"StaticTestSuite\",\"name\":\"Module1\"}", Encoding.UTF8, "application/json");
using (HttpResponseMessage response = client.PostAsync(url, content).Result)
{
response.EnsureSuccessStatusCode();
string responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}
I have used this documentation from Microsoft to call the API: Create a test suite
Please guide me in fixing the issue.
HTTP code 500 means that this is an error on your server. The server threw an exception when trying to process this POST request.
So, this error has nothing to do with HttpClient. Just check your server first and see what causes the exception.
A possibility is that the specified content type is not expected by the server. POST a StringContent will set the content type to text/plain. You might find the server doesn't like that. In this case just try to find out what media type the server is expecting and set the Headers.ContentType of the StringContent instance.
Whatever, I can create the suite by below sample, you can have a try for that:
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
namespace CreateTestSuite
{
class Program
{
public static void Main()
{
Task t = CreateTestSuite();
Task.WaitAll(new Task[] { t });
}
private static async Task CreateTestSuite()
{
try
{
var username = "username";
var password = "password";
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Accept.Add(
new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
Convert.ToBase64String(
System.Text.ASCIIEncoding.ASCII.GetBytes(
string.Format("{0}:{1}", username, password))));
string url = "http://server:8080/tfs/DefaultCollection/LCScrum/_apis/test/plans/212/suites/408?api-version=1.0";
var content = new StringContent("{\"suiteType\":\"StaticTestSuite\",\"name\":\"Module3\"}", Encoding.UTF8, "application/json");
using (HttpResponseMessage response = client.PostAsync(url, content).Result)
{
response.EnsureSuccessStatusCode();
string responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
}
}
I have a question regarding httpclient, i have a node.js rest api and Im trying to post (send) the user info to the service in order to insert to a database. the service is ok i tested manually and with postman.
But im using vs2017 xamarin and to consume the information im using the httpclient
I convert my user object to a json format
var json = JsonConvert.SerializeObject(user);
result: {"userName":"user","email":"user#hot.com","psw":"jok"}
then I create a content string type and pass the json:
var content = new StringContent(json, Encoding.UTF8, "application/json");
then I create the client
var client = new HttpClient();
and i test the following two codes
if i use this code the service work and the data is inserted in the data base but i think is because im like manually passing the parameters
HttpResponseMessage response = await client.PostAsync("http://localhost/ws/postUser/"+ e.userName + "/" + e.email + "/" + e.psw, content);
but what i was expecting is that this code works but in the server im getting the error that the url is not find. I think i need to map the parameters with the content
HttpResponseMessage response = await client.PostAsync("http://localhost/ws/postUser/", content);
The URL of the service is
http://localhost/ws/postUser/:userName/:email/:psw
this is the complete code:
I have a OnSignUpEventArgs class that inherit from EventArgs and where i declare the user object.
private async void SigUpDialog_mOnSigUpComplete(object sender, OnSignUpEventArgs e)
{
var json = JsonConvert.SerializeObject(e);
var content = new StringContent(json, Encoding.UTF8, "application/json");
var client = new HttpClient();
HttpResponseMessage response = await client.PostAsync("http://localhost/ws/postGasUser/"+ e.userName + "/" + e.email + "/" + e.psw, content);
// HttpResponseMessage response = await client.PostAsync("http://localhost/ws/postGasUser/", content);
if (response.IsSuccessStatusCode)
{
Console.Write("Success");
}
else
{
Console.Write("Error");
}
}
Problem Specification:
Resource URI : address/index.php?r=api/employee
Request Header : Content- Type: application/json
HTTP Method: POST
Request Body: { "employeeName" : "ABC","age":"20","ContactNumber": "12341234"}
The above parameters should be passed to the system as a row HTTP POST in a JSON string.
I am trying to solve this problem using RESTSharp. But I am having some problem Like after executing the request my code return a Null response and I am not sure my JSON string is passing properly or not.
Here is my Code:
public ActionResult EmployeeInfo(Employee employee)
{
//string empName = unSubscription.employeeName.ToString();
var client = new RestClient("http://localhost:21779/");
var request = new RestRequest("api/employee ", Method.POST);
request.RequestFormat = DataFormat.Json;
request.AddBody(new Employee
{
employeeName = "ABC",
age = "20",
ContactNumber = "12341234"
});
request.AddHeader("Content-Type", #"application/json");
// execute the request
IRestResponse response = client.Execute(request);
var content = response.Content; // raw content as string
return View();
}
Is there anything wrong with my code??
And I am little bit confused about
request.AddUrlSegment("username", "Admin") and request.AddParameter("name", "value").
Basically I want to know how to utilize AdduUrlSegment() and AddParameter().
Thanks in advance.
For using request.AddUrlSegment("username", "Admin") you should define your url template properly: var request = new RestRequest("api/employee/{username} ", Method.POST);
Also you should set Content-Type
request.AddHeader("Content-Type", #"application/json");
befor adding a Body
I am trying to post data to a Unix API, where it first will verify username and password, and then save the data which was sent.
The code I am using as of now is:
string strUrl = string.Format("http://moktrp.com/inf0/?username=fds- Sale003&password=CBA203&type=0&dlr=1&destination={0}&itemCode=1003);
WebRequest request = HttpWebRequest.Create(strUrl);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream s = (Stream)response.GetResponseStream();
StreamReader readstream = new StreamReader(s);
string datastring = readstream.ReadToEnd();
response.Close();
s.Close();
readstream.Close();
return true;