From a C# library I need to use the SP rest Api to upload a document to a document library then set properties for it.
I almost have this working by making the following sequence of calls:
The next call is a Post to _api/web/lists/GetByTitle('library name')/Items(157)
The same digest value is included in the header property X-RequestDigest as can be seen below:
POST
https://xxx.uk/_api/web/lists/GetByTitle('AssetMgmtEfilesDemo')/Items(157) HTTP/1.1
Accept: application/json, application/xml; odata=verbose
X-HTTP-Method: MERGE
IF-MATCH: *
X-RequestDigest: 0x01426A9818F7145E12BC2E99246C7E00AC1A3905D27204C783107FDDE806D2629171FAD8DCC61008E109DD9948BEB4208DC62107B2336B1228ABA143A2D5B3C6,19 Feb 2019 15:20:44 -0000
Content-Type: application/json; charset=utf-8
Host: xxx.uk
Content-Length: 359
Expect: 100-continue
{
__metadata":{
"type":"SP.Data.AssetMgmtEfilesDemoItem"
},
"UPRN":"U1",
"KeystoneDocType":"Document"
}
My problem is that for this request, I get a "403 forbidden" response.
Can anyone see where I went wrong?
Did you try getting a fresh new form digest value before making the post call ? form digest value do expire after some time (default 30 mins).
You can also check your permission on the specific list.
Sample code for your reference, call Rest API in C# code, reference System.Web.Extensions dll:
using System.Net;
using System.IO;
using System.Web.Script.Serialization;
static void Main(string[] args)
{
UpdateListItem();
}
public static string GetFormDigest()
{
string formDigest = null;
string resourceUrl = "http://sp/sites/dev/_api/contextinfo";
HttpWebRequest wreq = HttpWebRequest.Create(resourceUrl) as HttpWebRequest;
wreq.UseDefaultCredentials = true;
wreq.Method = "POST";
wreq.Accept = "application/json;odata=verbose";
wreq.ContentLength = 0;
wreq.ContentType = "application/json";
string result;
WebResponse wresp = wreq.GetResponse();
using (StreamReader sr = new StreamReader(wresp.GetResponseStream()))
{
result = sr.ReadToEnd();
}
var jss = new JavaScriptSerializer();
var val = jss.Deserialize<Dictionary<string, object>>(result);
var d = val["d"] as Dictionary<string, object>;
var wi = d["GetContextWebInformation"] as Dictionary<string, object>;
formDigest = wi["FormDigestValue"].ToString();
return formDigest;
}
public static void UpdateListItem()
{
string result = string.Empty;
Uri uri = new Uri("http://sp/sites/dev/_api/web/lists/getbytitle('AssetMgmtEfilesDemo')/items(1)");
HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(uri);
wreq.Credentials = CredentialCache.DefaultNetworkCredentials;
wreq.Method = "POST";
wreq.Accept = "application/json; odata=verbose";
wreq.ContentType = "application/json; odata=verbose";
wreq.Headers.Add("X-HTTP-Method", "MERGE");
wreq.Headers.Add("IF-MATCH", "*");
wreq.Headers.Add("X-RequestDigest", GetFormDigest());
string stringData = "{'__metadata': { 'type': 'SP.Data.AssetMgmtEfilesDemoItem' }, 'Title': 'UpdatedViaRest','UPRN':'U1','KeystoneDocType':'Image'}";
wreq.ContentLength = stringData.Length;
StreamWriter writer = new StreamWriter(wreq.GetRequestStream());
writer.Write(stringData);
writer.Flush();
WebResponse wresp = wreq.GetResponse();
using (StreamReader sr = new StreamReader(wresp.GetResponseStream()))
{
result = sr.ReadToEnd();
}
}
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