This question already has answers here:
Android app Json
(2 answers)
Closed 7 years ago.
I writing android app and have API
Writing API to file like this
Code of writing:
string url2 = "http://new.murakami.ua/?mkapi=getProducts";
JsonValue json = await FetchAsync(url2);
string path = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
string filename = System.IO.Path.Combine(path, "myfile.txt");
using (var streamWriter = new StreamWriter(filename, true))
{
streamWriter.Write(json.ToString());
streamWriter.Close();
}
ParseAndDisplay1(json);
ParseAndDisplay2(json);
ParseAndDisplay3(json);
ParseAndDisplay4(json);
ParseAndDisplay5(json);
ParseAndDisplay6(json);
ParseAndDisplay7(json);
ParseAndDisplay8(json);
}
private async Task<JsonValue> FetchAsync(string url)
{
// Create an HTTP web request using the URL:
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));
request.ContentType = "application/json";
request.Method = "GET";
// Send the request to the server and wait for the response:
using (WebResponse response = await request.GetResponseAsync())
{
// Get a stream representation of the HTTP web response:
using (Stream stream = response.GetResponseStream())
{
// Use this stream to build a JSON document object:
JsonValue jsonDoc = await Task.Run(() => JsonObject.Load(stream));
//dynamic data = JObject.Parse(jsonDoc[15].ToString);
Console.Out.WriteLine("Response: {0}", jsonDoc.ToString());
// Return the JSON document:
return jsonDoc;
}
}
}
And I need to read some fields from file
I try to do it like this but it didn't work
Code:
private void ParseAndDisplay1(JsonValue json)
{
TextView productname = FindViewById<TextView> (Resource.Id.posttittle);
TextView price = FindViewById<TextView> (Resource.Id.price);
TextView weight = FindViewById<TextView> (Resource.Id.weight);
productname.Click += delegate {
var intent404 = new Intent (this, typeof(SoupesDetailActivity1));
StartActivity (intent404);
};
string path = System.Environment.GetFolderPath (System.Environment.SpecialFolder.Personal);
string filename = System.IO.Path.Combine (path, "myfile.txt");
using (var streamReader = new StreamReader (filename, true)) {
JsonValue firstitem = json [81];
productname.Text = firstitem ["post_title"];
price.Text = firstitem ["price"] + " грн";
weight.Text = firstitem ["weight"] + "г";
}
}
Can you help me with this problem?
Here's a simple way to read the JSON and manipulate it using Json.NET that you can install from Xamarin:
var url = "http://new.murakami.ua/?mkapi=getProducts";
string path = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
// Since you're just downloading the json you can use a webclient
using (var wc = new WebClient())
{
// Download the json data
var jsonData = await wc.DownloadStringTaskAsync(new Uri(url));
// Save the json data
File.WriteAllText(Path.Combine(path, "myfile.txt"), jsonData);
// Deserialize the Json into a list of object of the type YourObject
List<YourObject> list = JsonConvert.DeserializeObject<List<YourObject>>(jsonData);
// Do whatever you want to do with the data
foreach (var yourObject in list)
{
// this is just an example
Console.WriteLine(yourObject.post_title);
}
}
And this is the definition of the YourObject class:
// this will hold the deserialized objects and make it easy to use
// You can delete properties you don't need
public class YourObject
{
public int ID { get; set; }
public string post_author { get; set; }
public string post_date { get; set; }
public string post_date_gmt { get; set; }
public string post_content { get; set; }
public string post_title { get; set; }
public string post_excerpt { get; set; }
public string post_status { get; set; }
public string comment_status { get; set; }
public string ping_status { get; set; }
public string post_password { get; set; }
public string post_name { get; set; }
public string to_ping { get; set; }
public string pinged { get; set; }
public string post_modified { get; set; }
public string post_modified_gmt { get; set; }
public string post_content_filtered { get; set; }
public int post_parent { get; set; }
public string guid { get; set; }
public int menu_order { get; set; }
public string post_type { get; set; }
public string post_mime_type { get; set; }
public string comment_count { get; set; }
public string filter { get; set; }
public object img_url { get; set; }
public string visibility { get; set; }
public string price { get; set; }
public string weight { get; set; }
public string energy { get; set; }
public string sku { get; set; }
public int category { get; set; }
}
Related
I am writing a program using the IMDB web api (https://imdb-api.com/) however when I am making a call with it I am not receiving any data back, I have reached out to them a few weeks ago but still not heard any response. The apiKey is correct and part of another function.
Below is the api I call I am making:
private void SearchForMovie()
{
string hostURL = "https://imdb-api.com/eng/API/SearchMovie/" +apiKey+ "/" + Searchbar.Text;
WebRequest wrGETURL;
wrGETURL = WebRequest.Create(hostURL);
Stream objStream;
objStream = wrGETURL.GetResponse().GetResponseStream();
StreamReader objReader = new StreamReader(objStream);
string jsonData = objReader.ReadToEnd();
searchData = JsonConvert.DeserializeObject<SearchData>(jsonData);
MessageBox.Show(searchResult.Id);
}
And this is the .Json file that on there website said I should use:
using System.Collections.Generic;
public class SearchData
{
public string SearchType { get; set; }
public string Expression { get; set; }
public List<SearchResult> Results { get; set; }
public string ErrorMessage { get; set; }
}
public class SearchResult
{
public string Id { get; set; }
public string ResultType { get; set; }
public string Image { get; set; }
public string Title { get; set; }
public string Description { get; set; }
}
public enum SearchType
{
Title = 1,
Movie = 2,
Series = 4,
Name = 8,
Episode = 16,
Company = 32,
Keyword = 64,
All = 128
}
I am trying to get a json file using a url and deserialize the json and display a particular field in the combobox but nothing shows up
WebClient client = new WebClient();
string json =
client.DownloadString("https://restcountries.eu/rest/v2/all/");
using (var ms = new MemoryStream(Encoding.Unicode.GetBytes(json)))
{
DataContractJsonSerializer deserializer = new
DataContractJsonSerializer(typeof(RootObject));
RootObject obj = (RootObject)deserializer.ReadObject(ms);
foreach (var name in obj.name)
{
comboBox1.Items.Add(obj.name);
}
}
this is the POCO class
public class RootObject
{
public string name { get; set; }
public List<string> topLevelDomain { get; set; }
public string alpha2Code { get; set; }
public string alpha3Code { get; set; }
public List<string> callingCodes { get; set; }
public string capital { get; set; }
public List<object> altSpellings { get; set; }
public string region { get; set; }
public string subregion { get; set; }
public int population { get; set; }
public List<object> latlng { get; set; }
public string demonym { get; set; }
public double? area { get; set; }
public double? gini { get; set; }
public List<string> timezones { get; set; }
public List<object> borders { get; set; }
public string nativeName { get; set; }
public string numericCode { get; set; }
public List<Currency> currencies { get; set; }
public List<Language> languages { get; set; }
public Translations translations { get; set; }
public string flag { get; set; }
public List<object> regionalBlocs { get; set; }
public string cioc { get; set; }
}
I want to display the name in the combobox
here is the link to the json
https://restcountries.eu/rest/v2/all/
You was trying deserialized one result, however result are list.
WebClient client = new WebClient();
string json =
client.DownloadString("https://restcountries.eu/rest/v2/all/");
using (var ms = new MemoryStream(Encoding.Unicode.GetBytes(json)))
{
DataContractJsonSerializer deserializer = new
DataContractJsonSerializer(List<RootObject>); //TODO: FIXED
List<RootObject>obj = (List<RootObject>)deserializer.ReadObject(ms); //TODO: FIXED
foreach (var name in obj.name)
{
comboBox1.Items.Add(obj.name);
}
}
it´s work
Add manage nuget package : Newtonsoft.Json
WebClient client = new WebClient();
string json =
client.DownloadString("https://restcountries.eu/rest/v2/all/");
dynamic dyn = JsonConvert.DeserializeObject<List<CountryName>>(json);
foreach (var item in dyn)
{
comboBox1.Items.Add(item.name);
}
public class CountryName
{
public string name { get; set; }
}
Best and fast approach and it's working fine
#A.M.Patel
i couldn't able to post it in the comment section
the code u sent worked perfectly
i too used newtonsoft.json
if iam not annoying you
can u spot out my mistakes in my code
1st code which i tried for single entry
HttpClient http = new HttpClient();
string url = "https://restcountries.eu/rest/v2/alpha/ind";
HttpResponseMessage response = http.GetAsync(new Uri(url)).Result;
string responseBody = response.Content.ReadAsStringAsync().Result;
var countries = JsonConvert.DeserializeObject(responseBody);
var details = JObject.Parse(countries.ToString());
comboBox1.Items.Add(countrynames);
it worked well
2nd code which i tried for multiple entries it doesn't showed any values in the combobox the combobox remained empty
HttpClient http = new HttpClient();
IDictionary<String, Int32> countrycounts = new Dictionary<String, Int32>();
string url = "https://restcountries.eu/rest/v2/all/";
HttpResponseMessage response = http.GetAsync(new Uri(url)).Result;
string responseBody = response.Content.ReadAsStringAsync().Result;
var countries = JsonConvert.DeserializeObject(responseBody);
var details = JObject.Parse(countries.ToString());
foreach (var obj in details){
string countrynames = details["name"].ToString();
if (countrycounts.ContainsKey(countrynames))
{
int count = countrycounts[countrynames];
count++;
countrycounts[countrynames] = count;
comboBox1.Items.Add(countrynames);
}
else { comboBox1.Items.Add(countrynames); }
Hello i'm trying to read json data from a text file but it doesn't work.
when i try to get data from a website then it works fine.
Anyone know a solution to fix this problem ?
thanks in advance.
private void Form1_Load(object sender, EventArgs e)
{
string path = #"C:\Users\spacefrog\Documents\Visual Studio 2017\Projects\json_test_solution\json_test\bin\Debug\test.json";
// Stream stream = File.OpenRead(path);
WebClient client = new WebClient();
Stream stream = client.OpenRead("https://www.cryptocompare.com/api/data/coinlist/"); // works perfect
/*
Stream stream = client.OpenRead(path); // doesn't work
Stream stream = File.OpenRead(path); // doesn't work
*/
/* File Data content (same as website)
{
"Response": "Success",
"Message": "Coin list succesfully returned!",
"BaseImageUrl": "https://www.cryptocompare.com",
"BaseLinkUrl": "https://www.cryptocompare.com",
"Data": {
"LTC": {
"Id": "3808",
"Url": "/coins/ltc/overview",
"ImageUrl": "/media/19782/ltc.png",
"Name": "LTC",
"CoinName": "Litecoin",
"FullName": "Litecoin (LTC)",
"Algorithm": "Scrypt",
"ProofType": "PoW",
"SortOrder": "2"
}
...
},
"Type": 100
}
*/
StreamReader reader = new StreamReader(stream);
JObject json = JObject.Parse(reader.ReadLine());
stream.Close();
MessageBox.Show((string)json["Response"]);
}
JObject json = JObject.Parse(reader.ReadLine());
How should the JSON.NET Parser parse the first line? Looking at your comment, the first line seems to be
{
Does not look like a valid JSON object. Take a look at the ReadToEnd method.
By the way, you may want to use the StreamReader within a using scope.
You don't have to use a temp file to parse that json
WebClient webClient = new WebClient();
var json = webClient.DownloadString("https://www.cryptocompare.com/api/data/coinlist/");
var rootObj = JsonConvert.DeserializeObject<SOTest.RootObject>(json);
//OR var jObj = JObject.Parse(json);
if you really want to save to a file you can use
webClient.DownloadFile(url,filename);
or write the json above to a file
File.WriteAllText(filename, json);
or if you want to go the client.OpenRead way
var f = File.Create(filename);
stream.CopyTo(f);
public class SOTest
{
public class DataItem
{
public string Id { get; set; }
public string Url { get; set; }
public string ImageUrl { get; set; }
public string Name { get; set; }
public string Symbol { get; set; }
public string CoinName { get; set; }
public string FullName { get; set; }
public string Algorithm { get; set; }
public string ProofType { get; set; }
public string FullyPremined { get; set; }
public string TotalCoinSupply { get; set; }
public string PreMinedValue { get; set; }
public string TotalCoinsFreeFloat { get; set; }
public string SortOrder { get; set; }
}
public class RootObject
{
public string Response { get; set; }
public string Message { get; set; }
public string BaseImageUrl { get; set; }
public string BaseLinkUrl { get; set; }
public Dictionary<string,DataItem> Data { get; set; }
public int Type { get; set; }
}
}
I have an Api that allows users to be inserted into the database. I am trying requesting the Api in a windows forms application but keep getting System.Net.WebException: 'The remote server returned an error: (403) Forbidden.'I am relatively new to Api requests. Can anyone see what I am doing incorrectly, thanks.
Customer class:
public class Customer
{
public int StoreCustomerID { get; set; }
// Actaul customer from store ID
public string Number { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
public string Address { get; set; }
public string Email { get; set; }
public string City { get; set; }
public string Region { get; set; }
public string Country { get; set; }
public string MobilePhone { get; set; }
public System.DateTime DOB { get; set; }
public string Phone { get; set; }
//public User Credentials { get; set; }
public string DeviceToken { get; set; }
//public CustomerCard Details { get; set; }
public string Gender { get; set; }
public bool IsError { get; set; }
public string ErrorMessage { get; set; }
//Public Property StoreNumber As Integer
public string Token { get; set; }
public bool Authenticated { get; set; }
public string SecretKey { get; set; }
}
ApiRequest class:
private void button1_Click(object sender, EventArgs e)
{
Customer cust = new Customer();
InsertUpdateCustomer(cust, "http://Example.com");
}
public static Customer InsertUpdateCustomer(Customer MyCustomer, string ServerAddress)
{
//Dim PostData As New CardInfo With {.CardNumber = CardNumber, .Reference = Reference, .SaleDate = DateTime.Now, .SaleTotalAmount = Amount, .StoreNumber = StoreNumber, .TransactionTypeID = Transaction}
//Customer Res = new Customer();
string webAddr = ServerAddress + "/api/Customer/Insert";
WebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr);
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";
httpWebRequest.Headers.Add("X-Giftworx-App", "Posworx");
httpWebRequest.Timeout = 4000;
MyCustomer.Name = "Janice";
MyCustomer.Surname = "Alexander";
MyCustomer.Email = "j#example.com";
MyCustomer.MobilePhone = "0314011828";
MyCustomer.Gender = "Female";
MyCustomer.DOB = DateTime.Now;
MyCustomer.Token = "wMq0cZ4iN7uOnJdrSdYITQcWHQ9VYgiLCosN7Rj9MSdqmZKSTuHCb08jeO/wlp3bCoK/sbEwwvjlZUeQdj8p5w==";
MyCustomer.SecretKey = "jdghe45";
MyCustomer.Authenticated = true;
try
{
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string jsonstring;
MemoryStream stream1 = new MemoryStream();
//Serialize the Record object to a memory stream using DataContractJsonSerializer.
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(Customer));
ser.WriteObject(stream1, MyCustomer);
stream1.Position = 0;
StreamReader sr = new StreamReader(stream1);
jsonstring = sr.ReadToEnd();
Debug.WriteLine("JSON form of Insert Loyaltyworx Update Customer object: ");
Debug.WriteLine(JObject.Parse(jsonstring));
streamWriter.Write(jsonstring);
streamWriter.Flush();
}
}
catch (Exception ex)
{
return null;
}
try
{
HttpWebResponse httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
if (httpResponse.StatusCode == HttpStatusCode.OK)
{
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
string result = streamReader.ReadToEnd();
Console.WriteLine(JObject.Parse(result));
Customer MyResult = JsonConvert.DeserializeObject<Customer>(result);
Debug.WriteLine(JObject.Parse(result));
return MyResult;
}
}
else
{
return null;
}
}
catch (Exception ex)
{
return null;
}
}
You can convert your data in to a json string as below
Customer cust = new Customer();
var json = new JavaScriptSerializer().Serialize(cust );
JObject json2 = JObject.Parse(json);
and then you can make a call like this.
string webAddr = ServerAddress + "/api/Customer/Insert";
HttpClient client = new HttpClient();
HttpResponseMessage response = client.PostAsJsonAsync(webAddr , json2).Result;
Make sure you are lunching your app as administrator and check that the firewall/antivirus is not blocking.
This question already has an answer here:
Deserializing JSON into an object
(1 answer)
Closed 7 years ago.
I am using JavaScriptserializer to deserialize the HTTP response and convert back to object.
Code to retrieve the response:
using (var response = (HttpWebResponse)request.GetResponse())
{
var responseValue = string.Empty;
if (response.StatusCode != HttpStatusCode.OK)
{
var message = String.Format("Request failed. Received HTTP {0}", response.StatusCode);
throw new ApplicationException(message);
}
using (var reader = new StreamReader(response.GetResponseStream()))
{
JavaScriptSerializer js = new JavaScriptSerializer();
var objText = reader.ReadToEnd();
var myobj = js.Deserialize<List<NPIObj>>(objText);
}
I am getting JSON string as below:
objText:
{
"NPI": [
{
"NPI": "1003000118",
"EntityType": "Organization",
"IsOrgSubpart": "N",
"OrgName": "STEVEN ENGEL PEDIATRICS",
"FirstLineMailingAddress": "1700 NEUSE BLVD",
"MailingAddressCityName": "NEW BERN",
"MailingAddressStateName": "NC",
"MailingAddressPostalCode": "28560-2304",
"MailingAddressCountryCode": "US",
"MailingAddressTelephoneNumber": "252-637-3799",
"MailingAddressFaxNumber": "252-633-0944",
"FirstLinePracticeLocationAddress": "1700 NEUSE BLVD",
"PracticeLocationAddressCityName": "NEW BERN",
"PracticeLocationAddressStateName": "NC",
}
]
}
The issue happens I am able to get JSON response in the objText variable.
But when i try to deserialize the reponse to NPIObj,the count is coming as 0.
var myobj = js.Deserialize<List<NPIObj>>(objText);
myobj variable is having count as 0,even I am receiving the JSON response.
Here is my NPIObj class:
public class NPIObj
{
public string EntityType { get; set; }
public string FirstLineMailingAddress { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string MailingAddressCityName { get; set; }
public string MailingAddressCountryCode { get; set; }
public string MailingAddressPostalCode { get; set; }
public string MailingAddressStateName { get; set; }
public string MiddleName { get; set; }
public string NamePrefix { get; set; }
public string NPI { get; set; }
public string OrgName { get; set; }
public string SecondLineMailingAddress { get; set; }
}
Can anyone help me out how can i get the response to NPIObj?
You have a root property in your json: NPI. So you are not deserializing the array but the root object.
Create another class:
public class NPIRoot
{
public List<NPIObj> NPI { get; set; }
}
Then
var myobj = js.Deserialize<NPIRoot>(objText);