im trying to send json parameter to asp request handler like this:
$scope.SaveCarUpgrades = function () {
var parameter = JSON.stringify(resultCarUpgrades);
$http.get("/ProfileEditor/saveUserCarUpgrades/" + $scope.useridCarUpgrades,
{ params: { name: parameter }}
).then(onsuccess, onfail);
function onsuccess(response) {
if (response.status == 200) {
$scope.saveUpgradesResult = "save upgrades success";
} else {
$scope.saveUpgradesResult = "save upgrades failed" + response.status;
}
}
function onfail(response) {
$scope.saveUpgradesResult = "save upgrades failed" + response.status;
// $scope.saveUpgradesResult = parameter;
}
}
c# request handler is something very simpe. its just for testing right now:
public string SaveUserCarUpgrades(string id)
{
string result = id;
var data = Request.QueryString["name"];
return id;
}
the problem is i always get 404 if if use json as parameter. (its a complex long json) but as simple json or simple string the response is fine. i dont think the problem is mime type as i set it in iis express in devcmd.
thank you for helping
Related
I'm trying to use Firebase and its callable Cloud Functions for my Unity project.
With the docs and different posts I found on the web I struggle to understand how returning data works. (I come from Azure Functions in C#)
I use TypeScript, and try to return a custom object CharactersResponse:
export class CharactersResponse //extends CustomResponse
{
Code!: CharactersCode;
CharacterID?: string;
}
export enum CharactersCode
{
Success = 0,
InvalidName = 2000,
CharacterNameAlreadyExists = 2009,
NoCharacterSlotAvailable = 3000,
InvalidCharacterClass = 4000,
EmptyResponse = 9000,
UnknownError = 9999,
}
(Custom Response is a parent class with only an UnknownErrorMessage string property, that I use for adding extra message when needed, but only in Unity. I don't need it in my functions.)
I have the same in my C# Unity Project:
public class CharactersResponse : CustomResponse
{
public CharactersCode Code;
public string CharacterID;
}
public enum CharactersCode
{
Success = 0,
InvalidName = 2000,
CharacterNameAlreadyExists = 2009,
NoCharacterSlotAvailable = 3000,
InvalidCharacterClass = 4000,
EmptyResponse = 9000,
UnknownError = 9999,
}
I'm still learning but I found it useful to do this way for displaying correct messages in Unity (and also regarding localization).
When the Code is 0 (Success), I will usually need to get some data at the same time like in this example CharacterID, or CharacterLevel, CharacterName etc.. CharacterResponse will be used for all functions regarding Characters like "GetAllCharacters", "CreateNewCharacter" etc..
My Function (CreateNewCharacter) looks like this:
import * as functions from "firebase-functions";
import { initializeApp } from "firebase-admin/app";
import { getFirestore } from "firebase-admin/firestore";
import { CharactersResponse } from "./CharactersResponse";
import { CharactersCode } from "./CharactersResponse";
import { StringUtils } from "../Utils/StringUtils";
// DATABASE INITIALIZATION
initializeApp();
const db = getFirestore();
// CREATE NEW CHARACTER
export const CreateNewCharacter =
functions.https.onCall((data, context) =>
{
// Checking that the user is authenticated.
if (!context.auth)
{
// Throwing an HttpsError so that the client gets the error details.
throw new functions.https.HttpsError('failed-precondition', 'The function must be called ' +
'while authenticated.');
}
// TEST
data.text = '';
// Authentication / user information is automatically added to the request.
const uid: string = context?.auth?.uid;
const characterName: string = data.text;
// Check if UserID is present
if (StringUtils.isNullOrEmpty(uid))
{
// Throwing an HttpsError so that the client gets the error details.
throw new functions.https.HttpsError('failed-precondition', 'Missing UserID in Auth Context.');
}
const response = new CharactersResponse();
if (StringUtils.isNullOrEmpty(characterName))
{
response.Code = CharactersCode.InvalidName;
console.log("character name null or empty return");
return response; // PROBLEM IS HERE *****************
}
console.log("end return");
return "Character created is named : " + characterName + ". UID = " + uid;
});
In Unity, the function call looks like this:
private static FirebaseFunctions functions = FirebaseManager.Instance.Func;
public static void CreateNewCharacter(string text, Action<CharactersResponse> successCallback, Action<CharactersResponse> failureCallback)
{
Debug.Log("Preparing Function");
// Create the arguments to the callable function.
var data = new Dictionary<string, object>();
data["text"] = text;
// Call the function and extract the operation from the result.
HttpsCallableReference function = functions.GetHttpsCallable("CreateNewCharacter");
function.CallAsync(data).ContinueWithOnMainThread((task) =>
{
if (task.IsFaulted)
{
foreach(var inner in task.Exception.InnerExceptions)
{
if (inner is FunctionsException)
{
var e = (FunctionsException)inner;
// Function error code, will be INTERNAL if the failure
// was not handled properly in the function call.
var code = e.ErrorCode;
var message = e.Message;
Debug.LogError($"Code: {code} // Message: {message}");
if (failureCallback != null)
{
failureCallback.Invoke(new CharactersResponse()
{
Code = CharacterCode.UnknownError,
UnknownErrorMessage = $"ERROR: {code} : {message?.ToString()}"
});
}
}
}
}
else
{
Debug.Log("About to Deserialize response");
// PROBLEM IS HERE *********************
CharactersResponse response = JsonConvert.DeserializeObject<CharactersResponse>(task.Result.Data.ToString());
Debug.Log("Deserialized response");
if (response == null)
{
Debug.LogError("Response is NULL");
}
else
{
Debug.Log("ELSE");
Debug.Log($"Response: {response}");
Debug.Log(response.Code.ToString());
}
}
});
}
The problem :
In my Unity C# code, task.Result.Data contains the CharactersCode I've set in my function, but I can't find a way to convert it to CharactersResponse. (It worked in Azure Functions). Moreover, the line just after Deserialization Debug.Log("Deserialized response"); is not executed. The code seems stuck in the deserialization process.
I tried with and without extending my TypeScript class with CustomResponse(because I don't need it in my Function so I didn't extended it at first).
I also tried setting a CharacterID because I thought maybe it didn't like the fact that this property was missing but the result is the same.
I don't understand what is the problem here? If any of you can help.
Thanks.
HttpsCallableResult.Data is of type object!
=> Your ToString will simply return the type name something like
System.Object
or in your case the result is a dictionary so it prints out that type.
=> This is of course no valid JSON content and not what you expected.
Simply construct the result yourself from the data:
var result = (Dictionary<string, object>)task.Result.Data;
CharactersResponse response = new CharactersResponse
{
Code = (CharactersCode)(int)result["Code"],
CharacterID = (string)result["CharacterID"];
};
I wanted to implement derHugo's solution but couldn't find a way to convert task.Result.Data to Dictionary<string, object>.
The code was stuck at var result = (Dictionary<string, object>)task.Result.Data; even in step by step debugging and no error popped up.
OLD SOLUTION:
So I did a little research and stumbled upon this post and ended up using this instead :
var json = JsonConvert.SerializeObject(task.Result.Data);
CharactersResponse response = JsonConvert.DeserializeObject<CharactersResponse>(json);
I basically convert the task.Result.Data to JSON and convert it back to CharactersResponse and it works. I have what I wanted.
However, I seem to understand that it is not the best solution performance-wise, but for now it is okay and I can now move forward in the project, I'll try to find a better solution later.
NEW SOLUTION:
I wanted to try one last thing, out of curiosity. I wondered what if I convert to JSON at the beginning (in my function) instead of at the end (in my Unity app). So I did this in my function's TypeScript code:
response.Code = CharactersCode.InvalidName;
var r = JSON.stringify(response); // Added this line
return r; // return 'r' instead of 'response'
In my C# code, I retried this line of code:
CharactersResponse response = JsonConvert.DeserializeObject<CharactersResponse>(task.Result.Data.ToString());
And it works ! I just needed to convert my object to JSON in my function before returning it. It allows me to "save" one line of code to process on the client side compared to the old solution.
Thanks derHugo for your answer as it helped me finding what I want.
I am wrote API method, after calling that method , I got my response like
[
{
"spark_version": "7.6.x-scala2.12"
}
]
Now I want to have variable in my API method which store value 7.6.x-scala2.12.
API Controller method
[HttpGet]
public IActionResult GetTest(int ActivityId)
{
string StoredJson = "exec sp_GetJobJSONTest " +
"#ActivityId = " + ActivityId ;
var result = _context.Test.FromSqlRaw(StoredJson);
return Ok(result);
}
So how this variable should call on this response to get string stored in spark_version?
Thank you
As you have the JavaScript tag, here's how you'd do it in JS:
If you are able to call your API method, then you can just assign the response to a variable. For example, if you are calling it using the fetch API, it would look something like:
let apiResponse;
fetch('myApiUrl.com').then((response) => {
if (response.status === 200) {
apiResponse = response.body;
console.log('Response:', apiResponse[0]['spark_version']);
}
});
(I defined the variable outside the then to make it globally accessible)
Angular service.ts:
getExcel() {
let link: string = (this.url);
return link;
}
component.ts:
public getExcel() {
//checks if string is empty, undefined or not null
if (this.langCode) {
return window.open(this.avrs.getExcel());
}
}
Java rest.java
#GET
#Path("/excel")
#Produces("application/vnd.ms-excel")
public Response getTransportCostsExcel(
#Context HttpServletRequest request,
) {
byte[] excelInBytes = excelGen.getExcel();
if(excelInBytes == null){
return Response.status(Response.Status.NOT_FOUND).entity("No data").build();
}
//Header details
String contentType = "application/vnd.ms-excel";
Response.ResponseBuilder responseBuilder = javax.ws.rs.core.Response.ok((Object) excelInBytes);
responseBuilder.type(contentType);
responseBuilder.header("Content-Disposition", "attachment; filename=" + fileName);
//Returns Excel
return responseBuilder.build();
}
When I try calling my api from postman i get "No data" and status is 401 not found. So the rest method works fine.
I get my excel file if data is found. But I can't seem to handle the 401 response. Angular opens a new window and says
site not avaliable: ERR_INVALID_RESPONSE
As you can see im not using http.get cause I want the user to start downloading the excel if the file is found.
I'm using oAuth 2.0 in ASP.NET web API.
In refresh token provider class I have code like this.
public Task ReceiveAsync(AuthenticationTokenReceiveContext context)
{
string tokenId = context.Token;
var protectedTicket = WebApiBusiness.GetProtectedTicket(tokenId);
if (!string.IsNullOrEmpty(protectedTicket))
{
context.DeserializeTicket(protectedTicket);
var result = WebApiBusiness.RemoveRefreshToken(tokenId);
}
else
{
context.Response.ContentLength = 200;
context.Response.ContentType = "application/json";
var ML_DefaultRes = new ML_DefaultRes()
{
ResponseCode = ResponseCodes.TokenInvalidRC,
APIVersion = apiversion,
ErrorDescription = ResponseCodes.GetRCDescription(ResponseCodes.TokenInvalidRC)
};
string str = JsonConvert.SerializeObject(ML_DefaultRes);
context.Response.Write(str);
return;
}
}
When refresh token is not valid I want custom response in JSON format.
But instead of setting content length to 200 it is taking content length upto 25 only, which makes invalid JSON response.
Is their any way to make this happen?
How do i read HttpRequest data sent by POST method from client, on the server, in Dart?
I send a message from the client like this:
HttpRequest request = new HttpRequest();
var url = "http://127.0.0.1:8081";
request.open("POST", url, async: false);
String data = 'hello from client';
request.send(data);
On server i am catching the request like this:
HttpServer.bind('127.0.0.1', 8081).then((server) {
server.listen((HttpRequest request) {
//DATA SHOULD BE READ HERE
});
});
But i cant figure out how to actually read the data... There is not data property in HttpRequest nor anything else...
EDIT This is how i get the answer now:
HttpServer.bind('127.0.0.1', 8081).then((server) {
server.listen((HttpRequest request) {
//DATA SHOULD BE READ HERE
print("got it");
print(request.method);
if(request.method == "POST") {
print("got it 2");
List<int> dataBody = new List<int>();
request.listen(dataBody.addAll, onDone: () {
var postData = new String.fromCharCodes(dataBody);
print(postData);
});
}
});
});
But for some reason the request.method is not "POST" but "OPTIONS", and if i change to if(request.method == "OPTIONS") , then print(postData) will still return nothing...
You can use the StringDecoder to tranform from "List of Int" to "String" from the HttpRequest. Since no matter if you send json, plain text, or png, Dart always send data in form of
"List of Int" to the server.Another means is to use the Streams (http://www.dartlang.org/articles/feet-wet-streams/) tested on Heroku Steam v0.6.2 Dart Editor 0.4.3_r20602 Dat SDK 0.4.3.5_r26062
For example,
the client:
import 'dart:html';
import 'dart:json' as Json;
import 'dart:async';
import 'dart:uri';
final String data = 'Hello World!';
void _sendPNG(String pngData) {
HttpRequest request = new HttpRequest(); // create a new XHR
// add an event handler that is called when the request finishes
request.onReadyStateChange.listen((_)
{
if (request.readyState == HttpRequest.DONE &&
(request.status == 200 || request.status == 0)) {
// data saved OK.
print(request.responseText); // output the response from the server
}
}
);
// POST the data to the server Async
print('Sending Photos to the server...');
var url = "/png";
request.open("POST", url);
request.setRequestHeader("Content-Type", "text/plain");
request.send(data);
}
the server:
import 'dart:io';
import 'dart:async';
import 'dart:json' as Json;
import "package:stream/stream.dart";
import 'package:xml/xml.dart' as xml;
import 'package:unittest/unittest.dart';
import 'package:rikulo_commons/mirrors.dart';
void receivePNG(HttpConnect connect){
var request = connect.request;
var response = connect.response;
if(request.uri.path == '/png' && request.method == 'POST')
{
String png='';
response.write('The server received png request!');
//read incoming List<int> data from request and use StringDecoder to transform incoming data to string
var stream = request.transform(new StringDecoder());
stream.listen((value){
print(value);
//Hello World!
}
else
{
response.write('error');
response.statusCode = HttpStatus.NOT_FOUND;
connect.close();
}
}
configure.dart
var _mapping = {
"/": home,
"/png": receivePNG,
};
Right now, the handling of POST data is a little difficult. But essentially the HttpRequest itself has to be 'listened' to. HttpRequest is a stream itself. In particular it's a Stream<List<int>>. So basically your data may be passed to your HttpRequest as multiple List<int>'s. So we need to reconstruct the data then convert it into a string (assuming you're expecting a string, not binary data, etc). Here's more or less what I do:
HttpServer.bind('127.0.0.1', 8081).then((server) {
server.listen((HttpRequest request) {
if(request.method == "POST") {
List<int> dataBody = new List<int>();
request.listen(dataBody.addAll, onDone: () {
var postData = new String.fromCharCodes(dataBody);
// Do something with the data now.
});
}
request.response.close();
});
Note that the request.listen(dataBody.AddAll, ...) basically calls List.addAll() each time data is to the server (in cases of larger data or multi-part forms it may not come all at once). This ensures we buffer it all until the stream indicates it is 'done' In which case we can now do something with the data we received, like convert it to a string.
I have found this useful example with client/side code
GitHub json send to server Example
// XXX: Dart Editor thinks this is OK, but I haven't run it.
import 'dart:html';
String encodeMap(Map data) {
return data.keys.map((k) {
return '${Uri.encodeComponent(k)}=${Uri.encodeComponent(data[k])}';
}).join('&');
}
loadEnd(HttpRequest request) {
if (request.status != 200) {
print('Uh oh, there was an error of ${request.status}');
return;
} else {
print('Data has been posted');
}
}
main() {
var dataUrl = '/registrations/create';
var data = {'dart': 'fun', 'editor': 'productive'};
var encodedData = encodeMap(data);
var httpRequest = new HttpRequest();
httpRequest.open('POST', dataUrl);
httpRequest.setRequestHeader('Content-type',
'application/x-www-form-urlencoded');
httpRequest.onLoadEnd.listen((e) => loadEnd(httpRequest));
httpRequest.send(encodedData);
}