Question

我从Delve帐户获取个人资料图片时遇到问题。以下是链接示例，当我将其放入浏览器时，它会将照片返回给我：https://orgname.sharepoint.com/_vti_bin/DelveApi.ashx/people/profileimage?userId=alias@org.com&size=L

现在我需要从代码中获取此照片。我尝试过这样的方式，非常适合不在Office365中的外部图像：

 var credentials = new NetworkCredential("myemail", "password");
 using (var handler = new HttpClientHandler { Credentials = credentials })
 using (var client = new HttpClient(handler))
 {
     var bytes = await client.GetByteArrayAsync(url);
     return Convert.ToBase64String(bytes);
 }

但作为回应，我得到的html页面包含如下文字：

<H1>We can't sign you in</H1><p>Your browser is currently set to block cookies. You need to allow cookies to use this service.</p><p>Cookies are small text files stored on your computer that tell us when you're signed in. To learn how to allow cookies, check the online help in your web browser.</p>

我认为它与Office365授权有关，但我不知道如何使用我的凭据对此网址执行REST请求...

Answer 1

问题已解决，首先我们需要初始化SharePoint上下文：

public ClientContext SetupSpContext()
    {
        // This builds the connection to the SP Online Server
        var clientContext = new ClientContext(_sharePointCrmDocumentsSiteName);
        var secureString = new SecureString();
        foreach (var c in _sharePointCrmDocumentsPwd.ToCharArray()) secureString.AppendChar(c);
        {
            clientContext.Credentials = new SharePointOnlineCredentials(_sharePointCrmDocumentsLoginName, secureString);
        }
        var web = clientContext.Web;
        clientContext.Load(web);
        clientContext.ExecuteQuery();
        return clientContext;
    }

然后我们可以使用用户电子邮件从

public string DownloadProfilePictureAsBase64(string email)
    {
        try
        {
            var pictureUrl = GetPictureUrl(email);

            var fileInfo = File.OpenBinaryDirect(_sharePointContext, pictureUrl);
            using (var memory = new MemoryStream())
            {
                var buffer = new byte[1000000];

                int nread;
                while ((nread = fileInfo.Stream.Read(buffer, 0, buffer.Length)) > 0)
                {
                    memory.Write(buffer, 0, nread);
                }
                memory.Seek(0, SeekOrigin.Begin);

                var buffer2 = new byte[memory.Length];

                memory.Read(buffer2, 0, buffer2.Length);
                return Convert.ToBase64String(buffer2);
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Picture for user {email} can not be downloaded");
            Console.WriteLine(ex.Message);
        }
        return null;
    }

    private string GetPictureUrl(string email)
    {
        string targetUser = $"i:0#.f|membership|{email}";

        var peopleManager = new PeopleManager(_sharePointContext);
        var personProperties = peopleManager.GetPropertiesFor(targetUser);
        _sharePointContext.Load(personProperties, p => p.PictureUrl);
        _sharePointContext.ExecuteQuery();
        var pictureUri = new Uri(personProperties.PictureUrl);
        var localPath = pictureUri.LocalPath.Replace("MThumb", "LThumb"); //Change size of the picture

        return localPath;
    }

Answer 2

您应该使用Microsoft Graph获取用户的图片。 https://graph.microsoft.com/v1.0/me/photo获取有关个人资料图片的元数据，https://graph.microsoft.com/v1.0/me/photo/ $ value可获取图片。您需要使用OAuth。有关详细信息，请参阅https://graph.microsoft.io/en-us/docs/api-reference/v1.0/api/profilephoto_get。

使用REST请求获取Office365的Delve个人资料照片

2 个答案: