In MVC I could generate .xsl or .pdf file with no issues with File(), but with the web Api nothing is happening when the action is fired! This is what I have tried so far.
I have tried a couple of solutions in here including this one Web API and report viewer
but nothing has worked for me.
public HttpResponseMessage Export(ExportVolunteerSearchFilter searchModel)
{
if (searchModel.Equals(null))
{
return Request.CreateResponse(HttpStatusCode.BadRequest);
}
var volunteers = _volunteersService.ExportAllVolunteersData(searchModel);
ReportViewer ReportViewer1 = new ReportViewer();
ReportViewer1.SizeToReportContent = true;
ReportViewer1.LocalReport.ReportPath =
System.Web.HttpContext.Current.Server.MapPath("~/Reports/VolunteersReport.rdlc");
ReportViewer1.LocalReport.EnableExternalImages = true;
ReportViewer1.LocalReport.DataSources.Clear();
ReportDataSource _rsource = new ReportDataSource("DataSet1", volunteers);
ReportViewer1.LocalReport.DataSources.Add(_rsource);
ReportViewer1.LocalReport.Refresh();
Warning[] warnings;
string[] streamIds;
string mimeType = string.Empty;
string encoding = string.Empty;
string extension = string.Empty;
string fileName = "reportVolunteer";
HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
var stream = new FileStream(System.Web.HttpContext.Current.Server.MapPath("~/Reports/VolunteersReport.rdlc"), FileMode.Open);
response.Content = new StreamContent(stream);
response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
response.Content.Headers.ContentDisposition.FileName = fileName;
response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/xls");
return response;
}
I have done it as:-
response.Content = new PushStreamContent(
async (outstream) =>
{
await getDataMethod(outstream)
},
new MediaTypeHeadrerValue(mediaType:"application/xls"));
response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
FileName = $"test.xls"
};
return response;
Related
The API Method I am calling is:
[HttpPost("PostXml")]
[Consumes("application/xml")]
[Produces("application/xml")]
public Reservation PostXml([FromBody] Reservation res) =>
repository.AddReservation(new Reservation
{
Name = res.Name,
StartLocation = res.StartLocation,
EndLocation = res.EndLocation
});
The client code:
[HttpPost]
public async Task<IActionResult> AddReservationByXml(Reservation reservation)
{
Reservation receivedReservation = new Reservation();
using (var httpClient = new HttpClient())
{
StringContent content = new StringContent(ConvertObjectToXMLString(reservation), Encoding.UTF8, "application/xml");
using (var response = await httpClient.PostAsync("http://localhost:8888/api/Reservation/PostXml", content))
{
string apiResponse = await response.Content.ReadAsStringAsync();
receivedReservation = JsonConvert.DeserializeObject<Reservation>(apiResponse);
}
}
return View(receivedReservation);
}
string ConvertObjectToXMLString(object classObject)
{
string xmlString = null;
XmlSerializer xmlSerializer = new XmlSerializer(classObject.GetType());
using (MemoryStream memoryStream = new MemoryStream())
{
xmlSerializer.Serialize(memoryStream, classObject);
memoryStream.Position = 0;
xmlString = new StreamReader(memoryStream).ReadToEnd();
}
return xmlString;
}
I am failing to call the API method and getting the error:
400One or
more validation errors
occurred.https://tools.ietf.org/html/rfc7231#section-6.5.1|f5452728-4c49abe4d88e559e.1.8095e7c1_An
error occurred while deserializing input
data.
What is wrong here?
You got error from this line
receivedReservation = JsonConvert.DeserializeObject<Reservation>(apiResponse);
Please check the validation of your Reservation Model and detail the values you past
and the content of error you got.
Your XML request should be with the correct case as the c# class. XML is case sensitive.
Try this code.
XmlSerializer xsSubmit = new XmlSerializer(typeof(Reservation));
System.IO.StringWriter sww = new System.IO.StringWriter();
XmlWriter writer = XmlWriter.Create(sww);
xsSubmit.Serialize(writer, reservation);
var xml = sww.ToString();
Am trying to create a an azure function that is triggered in a Logic Apps,
The functions purpose is to web crawl certain web sites, take the desired information, compare that with a a SQL Server database in Azure, compare if we already have that information if not add it.
My issue is that when ever i run it I get the Server 500 error, I assume its accessing the database that cause. Help?
public static async Task<IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req, ILogger log
)
{
log.LogInformation("C# HTTP trigger function processed a request.");
string RequestBody = await new StreamReader(req.Body).ReadToEndAsync();
{
return await CrawlBlog(0, RequestBody);
}
}
private static async Task<IActionResult> CrawlBlog(int Picker, string req)
{
int BlogPicker = Picker;
string TheResult = req;
//Get the url we want to test
var Url = "";
if (BlogPicker == 0)
{
Url = "*********";
}
else if (BlogPicker == 1)
{
Url = "*********";
}
/*
else if (BlogPicker == 2)
{
Url = "https://azure.microsoft.com/en-in/blog/?utm_source=devglan";
}
*/
else
{
TheResult = "False we got a wrong pick";
return (ActionResult)new OkObjectResult
( new {TheResult });
}
var httpClient = new HttpClient();
var html = await httpClient.GetStringAsync(Url);
var htmlDocument = new HtmlDocument();
htmlDocument.LoadHtml(html);
//a list to add all availabel blogs we found
var Blog = new List<BlogStats>();
switch (BlogPicker)
{
case 0:
{
var divs =
htmlDocument.DocumentNode.Descendants("div")
.Where(node => node.GetAttributeValue("class", "").Equals("home_blog_sec_text")).ToList();
foreach (var divo in divs)
{
var Blogo = new BlogStats
{
Summary = divo.Descendants("p").FirstOrDefault().InnerText,
Link = divo.Descendants("a").FirstOrDefault().ChildAttributes("href").FirstOrDefault().Value,
Title = divo.Descendants("a").FirstOrDefault().InnerText
};
Blog.Add(Blogo);
}
break;
}
case 1:
{
var divs =
htmlDocument.DocumentNode.Descendants("div")
.Where(node => node.GetAttributeValue("class", "").Equals("post_header_title two_third last")).ToList();
foreach (var divo in divs)
{
//string TheSummary = "we goofed";
var ThePs = divo.Descendants("p").ToList();
var Blogo = new BlogStats
{
Summary = ThePs[1].GetDirectInnerText(),
Link = divo.Descendants("a").LastOrDefault().ChildAttributes("href").FirstOrDefault().Value,
Title = divo.Descendants("a").FirstOrDefault().InnerText
};
Blog.Add(Blogo);
}
break;
}
}
TheResult = await SqlCheck(Blog[0].Title, Blog[0].Summary, Blog[0].Link); //error 500
return (ActionResult)new OkObjectResult
(
new
{
TheResult
}
);
}
public static async Task<string> SqlCheck(string Tit, string Sumy, string Lin)
{
SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder();
builder.DataSource = "flygon.database.windows.net";
builder.UserID = "*****";
builder.Password = "********";
builder.InitialCatalog = "torkoal";
System.Data.DataSet ds = new System.Data.DataSet();
SqlConnection connection = new SqlConnection(builder.ConnectionString);
connection.Open();
SqlCommand CheckCommand = new SqlCommand("SELECT * FROM TableBoto WHERE Link = #id3 ", connection);
CheckCommand.Parameters.AddWithValue("#id3", Lin);
SqlDataAdapter dataAdapter = new SqlDataAdapter(CheckCommand);
dataAdapter.Fill(ds);
int i = ds.Tables[0].Rows.Count;
if (i > 0)
{
return $" We got a Duplicates in title : {Tit}";
}
try
{
{
string query = $"insert into TableBoto(Title,Summary,Link) values('{Tit}','{Sumy}','{Lin}');";
SqlCommand command = new SqlCommand(query, connection);
SqlDataReader reader = await command.ExecuteReaderAsync();
reader.Close();
}
}
catch (SqlException)
{
// Console.WriteLine(e.ToString());
}
connection.Close();
return $" Success Ign +{Tit} + Ign {Sumy}+ Ign {Lin} Ign Success SQL ";
}
}
500 HTTP status code is a generic code which means that the server was not able to process the request due to some issues, First step would be to add some exception handling to your function and see if the failure occurs and where it occurs.
On Side note, you should not use HTTP client in the way used in the code, you should not new it up every time your function executes, this client should be static in nature. Refer Manage connections in Azure Functions
I have two interfaces for components that each requires functionality from the other one. One that generates Oauth tokens, and another one that gets secrets from a secret provider (Azure Key Vault).
The problem is that the Token Provider needs to obtain a secret value (a password) to make its HTTP call, and the Secret Provider class needs to get a Token in order to call Azure. Chicken and Egg problem.
From the other questions I've read, one suggestion is to create a third class/interface on which the original 2 depend, but I'm not sure how that would work here.
Any help and suggestions would be appreciated. Code for all relevant classes/interfaces is shown below.
public interface ISecretProvider
{
string GetSecret(string secretName);
}
public interface ITokenProvider
{
string GetKeyVaultToken();
}
public class OktaTokenProvider : ITokenProvider
{
ISecretProvider _secretProvider;
public string GetKeyVaultToken()
{
var tokenUrl = ConfigurationManager.AppSettings["KeyVault.Token.Url"];
var clientId = ConfigurationManager.AppSettings["KeyVault.Token.ClientId"];
var clientSecret = _secretProvider.GetSecret("ClientSecret");
var scope = ConfigurationManager.AppSettings["KeyVault.Scope"];
var token = GetToken(tokenUrl, clientId, clientSecret, scope);
return token;
}
private string GetToken(string tokenUrl, string clientId, string clientSecret, string scope)
{
var clientCredentials = $"Basic {Convert.ToBase64String(Encoding.UTF8.GetBytes($"{clientId}:{clientSecret}"))}";
string responseFromServer = string.Empty;
bool success = false;
int retryCount = 0;
while (!success)
{
try
{
var tokenWebRequest = (HttpWebRequest)WebRequest.Create(tokenUrl);
tokenWebRequest.Method = "POST";
tokenWebRequest.Headers.Add($"Authorization:{clientCredentials}");
tokenWebRequest.Headers.Add("Cache-control:no-cache");
tokenWebRequest.ContentType = "application/x-www-form-urlencoded";
using (var streamWriter = new StreamWriter(tokenWebRequest.GetRequestStream()))
{
streamWriter.Write($"grant_type=client_credentials&scope={scope}");
streamWriter.Flush();
streamWriter.Close();
}
using (WebResponse response = tokenWebRequest.GetResponse())
{
using (var dataStream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
responseFromServer = reader.ReadToEnd();
reader.Close();
}
dataStream.Close();
}
response.Close();
response.Dispose();
}
success = true;
}
catch (Exception)
{
if (retryCount > 3)
{
throw;
}
else
{
retryCount++;
}
}
}
JToken token = JObject.Parse(responseFromServer);
var accessToken = $"Bearer {token.SelectToken("access_token").ToString()}";
return accessToken;
}
}
public class KeyVaultSecretProvider : ISecretProvider
{
ITokenProvider _tokenProvider;
public KeyVaultSecretProvider(ITokenProvider tokenProvider)
{
_tokenProvider = tokenProvider;
}
public string GetSecret(string secretName)
{
var KeyVaultUrl = ConfigurationManager.AppSettings[Constants.KEYVAULT_ENDPOINT];
var subscriptionKey = ConfigurationManager.AppSettings[Constants.KEYVAULT_SUBSCRIPTION_KEY];
string responseFromServer = "";
var requestedSecretUrl = $"{KeyVaultUrl}{secretName}";
var secretWebRequest = (HttpWebRequest)WebRequest.Create(requestedSecretUrl);
var accessToken = _tokenProvider.GetKeyVaultToken();
secretWebRequest.Method = "GET";
secretWebRequest.Headers.Add("authorization:" + accessToken);
secretWebRequest.Headers.Add("cache-control:no-cache");
secretWebRequest.Headers.Add("Ocp-Apim-Subscription-Key:" + subscriptionKey);
using (WebResponse response = secretWebRequest.GetResponse())
{
using (var dataStream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
responseFromServer = reader.ReadToEnd();
reader.Close();
}
dataStream.Close();
}
response.Close();
response.Dispose();
}
JToken secret = JObject.Parse(responseFromServer);
var secretValue = secret.SelectToken("Secret").ToString();
return secretValue;
}
}
Have a single class implement both interfaces. The two responsibilities are inter-dependent, so put them together in one class. There is nothing wrong with this.
Here is what i have so far and it's not working:
private void _send1(string file)
{
var client = new RestClient("https://identity.api.rackspacecloud.com/v2.0");
var request = new RestRequest("tokens", Method.POST);
request.RequestFormat = DataFormat.Json;
string test = "{\"auth\":{\"RAX-KSKEY:apiKeyCredentials\"{\"username\":\"";
test += UserName;
test += "\",\"apiKey\":\"";
test += MyToken;
test += "\"}}}";
request.AddBody(serText);
request.AddParameter("application/json", test, ParameterType.RequestBody);
RestResponse response = (RestResponse)client.Execute(request);
// Content = "{\"badRequest\":{\"code\":400,\"message\":\"java.lang.String cannot be cast to org.json.simple.JSONObject\"}}"
}
note: UserName and apiKey are valid RackSpace credentials :-)
Thanks
In advance
Try 2: ( found this on the web ) and it gives me a token... now what do I do with it?
private void _send2(string file)
{
Dictionary<string, object> dictAuth = new Dictionary<string, object>();
dictAuth.Add("RAX-KSKEY:apiKeyCredentials", new { username = UserName, apiKey = MyToken });
var auth = new
{
auth = dictAuth
};
RestClient client = new RestClient("https://identity.api.rackspacecloud.com");
RestSharp.RestRequest r = new RestRequest("/v2.0/tokens", Method.POST);
r.AddHeader("Content-Type", "application/json");
r.RequestFormat = DataFormat.Json;
r.AddBody(auth);
RestResponse response = (RestResponse)client.Execute(r);
// Content = "{\"access\":{\"token\":{\"id\":\"AACCvxjTOXA\",\"expires\":\"2016-04-09T21:12:10.316Z\",\"tenant\":{\"id\":\"572045\",\"name\...
}
moving just a bit further:
I have create a class that parses out the URL, tenantID and token from Step 2 above
This data is passed to the PostFile call:
private void PostFile(string url, string tenantID, string token, string file)
{
string fName = Path.GetFileName(file);
RestClient client = new RestClient(url);
string baseURL = string.Format("v1/{0}/Support/{1}", tenantID, fName);
RestRequest r = new RestRequest(baseURL, Method.POST);
r.AddHeader("Content-Type", "text/plain");
r.AddParameter("X-Auth-Token", token);
r.AddFile(fName, file);
RestResponse response = (RestResponse)client.Execute(r);
if( response.StatusCode == System.Net.HttpStatusCode.OK)
{
int x = 0;
}
}
Here is what finally worked:
bool bRetval = false;
string fName = Path.GetFileName(file);
RestClient client = new RestClient(url);
string baseURL = string.Format("/Support/{0}", fName);
RestRequest r = new RestRequest(baseURL, Method.PUT);
r.AddHeader("Content-Type", "text/plain");
r.AddHeader("X-Auth-Token", token);
r.AddFile(fName, file);
RestResponse response = (RestResponse)client.Execute(r);
See the above post for the supporting functions that lead up to this one
private bool PostFile(string url, string token, string file)
{
bool bRetval = false;
string fName = Path.GetFileName(file);
RestClient client = new RestClient(url);
string baseURL = string.Format("/Support/{0}", fName);
RestRequest r = new RestRequest(baseURL, Method.PUT);
r.AddHeader("Content-Type", "text/plain");
r.AddHeader("X-Auth-Token", token);
r.AddFile(fName, file);
RestResponse response = (RestResponse)client.Execute(r);
if ( response.StatusCode == System.Net.HttpStatusCode.Created)
{
bRetval = true;
}
return bRetval;
}
I am creating a universal Windows Phone 8.1 App. I am trying to download the file and view it into launcher. I works for small file less than 15 MB files. But when file size is more than 15 MB, I got the out of memory exception.
async private Task<object> GetMailAttachments(string attachNotify)
{
try
{
cmdBarMailItem.IsEnabled = false;
if (await Device.IsNetworkAvailable())
{
cts = new CancellationTokenSource();
// Ignore SSL Certificate which is untrusted,expired and has invalid hostname.
var filter = new HttpBaseProtocolFilter() { AllowUI = false };
filter.IgnorableServerCertificateErrors.Add(Windows.Security.Cryptography.Certificates.ChainValidationResult.Untrusted);
filter.IgnorableServerCertificateErrors.Add(Windows.Security.Cryptography.Certificates.ChainValidationResult.Expired);
filter.IgnorableServerCertificateErrors.Add(Windows.Security.Cryptography.Certificates.ChainValidationResult.InvalidName);
// Start calling the soap service #userGetAttachmentByIndex
using (var client = new System.Net.Http.HttpClient(new WinRtHttpClientHandler(filter)))
{
//Prepare parameters which is to be post via soap envelope.
List<KeyValuePair<string, string>> parameter = new List<KeyValuePair<string, string>>();
parameter.Add(new KeyValuePair<string, string>("sessionId", GlobalInfo.SessionID));
parameter.Add(new KeyValuePair<string, string>("attachmentIndex", attachNotify.Split('|')[1].ToString()));
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/xml"));
client.DefaultRequestHeaders.Add("SOAPAction", "userGetAttachmentByIndex");
var postContent = new StringContent(StringHelper.ConstructSoapRequest(parameter, "userGetAttachmentByIndex"), Encoding.UTF8, "text/xml");
// Getting response from soap service
var response = await client.PostAsync(new Uri(AppEnv.ServiceEndPoint), postContent, cts.Token);
if (response.StatusCode == System.Net.HttpStatusCode.OK)
{
string soapResponse = await response.Content.ReadAsStringAsync();
var soap = XDocument.Parse(soapResponse);
XNamespace ns = "http://service.webservice.cryoserver.ci";
var base64BinaryStr = soap.Descendants(ns + "userGetAttachmentByIndexResponse").First().Descendants(ns + "return").First().Descendants(ns + "attachmentType").First().Descendants(ns + "binaryData").First().Descendants(ns + "base64Binary").First().Value;
await saveStringToLocalFile(base64BinaryStr);
var file = await Windows.Storage.ApplicationData.Current.LocalFolder.GetFileAsync("myTest.pdf");
bool x = await Windows.System.Launcher.LaunchFileAsync(file);
return x;
}
}
}
cmdBarMailItem.IsEnabled = true;
}
catch (TaskCanceledException)
{
PopupRetrieve.IsOpen = false;
ProgressBar.IsVisible = false;
cmdBarMailItem.IsEnabled = true;
}
catch(Exception ex)
{
cmdBarMailItem.IsEnabled = true;
ProgressBar.IsVisible = false;
MessageBox.Show(AlertType.Connectivity);
}
return null;
}
async Task saveStringToLocalFile(string content)
{
try
{
// saves the string 'content' to a file 'filename' in the app's local storage folder
// byte[] fileBytes = System.Text.Encoding.UTF8.GetBytes(content.ToCharArray());
byte[] byteArray = Convert.FromBase64String(content);
// create a file with the given filename in the local folder; replace any existing file with the same name
StorageFile file = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync("myTest.pdf", CreationCollisionOption.ReplaceExisting);
// write the char array created from the content string into the file
using (var stream = await file.OpenStreamForWriteAsync())
{
stream.Write(byteArray, 0, byteArray.Length);
stream.Flush();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
I got the exception on executing the line
string soapResponse = await response.Content.ReadAsStringAsync();
Anybody have an idea why the exception occurs ? What could be possible solution to fix it.
Any help would be appriciable. :)