CSOM不使用Windows凭据，并给出“远程服务器返回错误：403禁止”错误

问题描述

我有一个使用.NET Framework的控制台应用程序，该应用程序使用CSOM上传文件。当我运行应用程序时，出现以下错误：

远程服务器返回错误：（403）禁止。

但是，当我通过Windows凭据时，它可以正常工作。由于安全目的，我不想在代码中对我的凭证进行硬编码。除了在代码中传递凭据以外，还有其他解决方法吗？

我的代码如下：

using System;
using System.IO;
using System.Linq;
using System.Security;
using Microsoft.SharePoint.Client;
using ClientOM = Microsoft.SharePoint.Client;


namespace ConsoleApp3
{

class Program
{
    static void Main(string[] args)
    {

        ClientContext clientContext = new ClientContext("https://companyname.sharepoint.com");

        //securestring passWord = new securestring();
        //foreach (char c in "HelloWorld@1234".tochararray()) passWord.AppendChar(c);
        //clientContext.Credentials = new SharePointOnlineCredentials("jay.desai@company.com",passWord);
        clientContext.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;

        using(FileStream fileStream = new FileStream(@"C:\Users\jay.desai\Desktop\LSRsql01_ACXM_20201003.html",FileMode.Open))
            ClientOM.File.SaveBinaryDirect(clientContext,"/sites/DataServices/Shared Documents/Data Dictionaries/LSRsql01_ACXM_20201003.html",fileStream,true);
    }
}

}

解决方法

CSOM连接SharePoint Online需要SharePointOnlineCredentials。测试演示：

static void Main(string[] args)   
      {  
            string userName = "amos@contoso.onmicrosoft.com";  
            Console.WriteLine("Enter your password.");  
            SecureString password = GetPassword();                  
            using(var clientContext = new ClientContext("https://contoso.sharepoint.com"))   
            {  
                // SharePoint Online Credentials  
                clientContext.Credentials = new SharePointOnlineCredentials(userName,password);  
                // Get the SharePoint web  
                Web web = clientContext.Web;  
                // Load the Web properties  
                clientContext.Load(web);  
                // Execute the query to the server.  
                clientContext.ExecuteQuery();  
                // Web properties - Display the Title and URL for the web  
                Console.WriteLine("Title: " + web.Title + "; URL: " + web.Url);  
                Console.ReadLine();  
                }  
            } 

private static SecureString GetPassword()  
      {  
            ConsoleKeyInfo info;  
            //Get the user's password as a SecureString  
            SecureString securePassword = new SecureString();  
            do   
            {  
                info = Console.ReadKey(true);  
                if (info.Key != ConsoleKey.Enter)   
                {  
                    securePassword.AppendChar(info.KeyChar);  
                }  
            }  
            while (info.Key != ConsoleKey.Enter);  
            return securePassword;  
        }

来源：https://www.c-sharpcorner.com/article/connect-to-sharepoint-2013-online-using-csom-with-console-ap/

已更新：

string siteUrl = "https://contoso.sharepoint.com/sites/demo";
using (var cc = new AuthenticationManager().GetAppOnlyAuthenticatedContext(siteUrl,"[Your Client ID]","[Your Client Secret]"))
{
    cc.Load(cc.Web,p => p.Title);
    cc.ExecuteQuery();
    Console.WriteLine(cc.Web.Title);
};

c#c#csom sharepoint