Créer un élément de liste avec API Sharepoint Rest; Résultat 400 Bad demande

Question

je mets en œuvre le code suivant:

using Microsoft.SharePoint.Client; 
using Newtonsoft.Json; 
using Newtonsoft.Json.Linq; 
using System; 
using System.Collections.Generic; 
using System.Net; 
using System.Security; 
using System.Text; 

namespace Sharepoint_sandbox { 
    class Program { 
     private static CookieContainer GetO365CookieContainer (SharePointOnlineCredentials credentials, string targetSiteUrl){ 
     CookieContainer container = null; 

     Uri targetSite = new Uri (targetSiteUrl); 
     string cookieString = credentials.GetAuthenticationCookie (targetSite); 
     if (cookieString != null) { 
      string trimmedCookie = cookieString.TrimStart ("SPOIDCRL=".ToCharArray()); 
      container = new CookieContainer(); 
      container.Add (new Cookie ("SPOIDCRL", trimmedCookie, string.Empty, targetSite.Authority)); 
     } 

     return container; 
     } 

     private static SharePointOnlineCredentials GetO365Credentials (string userName, string password) { 
     SecureString securePassword = new SecureString(); 
     foreach (char c in password.ToCharArray()) 
      securePassword.AppendChar (c); 

     return new SharePointOnlineCredentials (userName, securePassword); 
     } 

     private static string GetFormDigest (string siteUrl, ICredentials credentials, CookieContainer cc) { 
     string formDigest = null; 

     string resourceUrl = siteUrl + "/_api/contextinfo"; 
     HttpWebRequest httpWebRequest = HttpWebRequest.Create (resourceUrl) as HttpWebRequest; 
     httpWebRequest.Credentials = credentials; 
     httpWebRequest.CookieContainer = cc; 
     httpWebRequest.Timeout = 10000; 
     httpWebRequest.Method = "POST"; 
     httpWebRequest.ContentType = "application/json; odata=verbose"; 
     httpWebRequest.Accept = "application/json;odata=verbose"; 
     httpWebRequest.ContentLength = 0; 
     httpWebRequest.ContentType = "application/json"; 
     string result; 
     using (WebResponse webResponse = httpWebRequest.GetResponse()) { 
      using (System.IO.StreamReader sr = new System.IO.StreamReader (webResponse.GetResponseStream())) { 
       result = sr.ReadToEnd(); 
      } 
     } 
     var dObject = (JObject)JsonConvert.DeserializeObject (result); 
     foreach (var item in dObject["d"].Children()){ 
      formDigest = item.First["FormDigestValue"].ToString(); 
     } 

     return formDigest; 
     } 

     private static Tuple<string, List<string>> CreateListItem (string site, string userName, string password, string resourceUrl, string content) { 
     HttpWebRequest httpWebRequest = HttpWebRequest.Create (resourceUrl) as HttpWebRequest; 
     httpWebRequest.UseDefaultCredentials = false; 
     SharePointOnlineCredentials credentials = GetO365Credentials (userName, password); 
     httpWebRequest.Credentials = credentials; 
     httpWebRequest.CookieContainer = GetO365CookieContainer (credentials, site); 
     string formDigest = GetFormDigest (site, credentials, httpWebRequest.CookieContainer); 
     httpWebRequest.Method = "POST"; 
     httpWebRequest.Headers.Add ("X-RequestDigest", formDigest); 
     httpWebRequest.Timeout = 10000; 
     httpWebRequest.ContentType = "application/json; odata=verbose"; 
     httpWebRequest.Accept = "application/json; odata=verbose"; 
     httpWebRequest.ContentLength = 0; 

     List<string> errorMessages = new List<string>(); 
     string response = ""; 
     try { 
      byte[] binary = Encoding.Unicode.GetBytes(content); 
      httpWebRequest.ContentLength = binary.Length; 
      using (System.IO.Stream requestStream = httpWebRequest.GetRequestStream()) { 
       requestStream.Write (binary, 0, binary.Length); 
      } 

      using (WebResponse webResponse = httpWebRequest.GetResponse()) { 
       using (System.IO.StreamReader sr = new System.IO.StreamReader (webResponse.GetResponseStream())) { 
        response = sr.ReadToEnd(); 
       } 
      } 
     } 
     catch (WebException e) { 
      errorMessages.Add (e.Message); 
      if (e.Response != null && e.Response.GetResponseStream() != null) { 
       using (System.IO.StreamReader sr = new System.IO.StreamReader (e.Response.GetResponseStream())) { 
        errorMessages.Add (sr.ReadToEnd()); 
       } 
      } 
     } 

     return new Tuple<string, List<string>> (response, errorMessages); 
     } 

     static void Main (string[] args) { 
     string site = "https://*******"; 
     string user = "******"; 
     string password = "******"; 

     string resourceUrl = site + "/_api/Web/Lists(guid'0818cf14-4028-4c7d-adbc-489adb1c0cb4')/Items"; 
     string content = "{ '__metadata': { 'type':'SP.Data.Test_x005f_1ListItem' }, 'Title': 'TestItem'}"; 

     Tuple<string, List<string>> result = CreateListItem (site, user, password, resourceUrl, content); 

     Console.Write (result.Item1 + "\n" + string.Join ("\n", result.Item2)); 
     Console.ReadKey(); 
     } 
    } 
} 

Le résultat est:

A távoli kiszolgáló a következő hibát küldte vissza: (400) Hibás kérelem. 
{"error":{"code":"-1, Microsoft.SharePoint.Client.InvalidClientQueryException","message":{"lang":"hu-HU","value":"Invalid JSON. The property name '' is not valid. The name of a property cannot be empty."}}} 

Le texte hongrois en anglais: Le serveur distant a renvoyé une erreur: (400) demande Bad .

Je ne comprends pas quelle propriété était vide. Si le premier et le dernier caractères du contenu ne sont pas {et}, l'erreur est "JSON non valide. Un jeton n'a pas été reconnu dans le contenu JSON". Si le contenu est vide {} ou toute autre chaîne entre les {} alors l'erreur est comme ci-dessus (le nom de la propriété « » est pas valide. ... »)

Pourriez-vous me aider? Merci

Answer 1

Je préférerais utiliser StreamWriter class au lieu de Encoding class pour éviter tout problème d'encodage.

Dans votre exemple pour définir le corps de demande remplacer:

byte[] binary = Encoding.Unicode.GetBytes(content); 
httpWebRequest.ContentLength = binary.Length; 
using (System.IO.Stream requestStream = httpWebRequest.GetRequestStream()) 
{ 
    requestStream.Write(binary, 0, binary.Length); 
} 

avec

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream())) 
{ 
    streamWriter.Write(content); 
} 

Answer 2

Modification du codage Unicode UTF8 résoudre le problème:

de:

byte[] binary = Encoding.Unicode.GetBytes(content); 

pour:

byte[] binary = Encoding.UTF8.GetBytes(content);