Question

我在远程服务器上有一个文件，我想读取其内容。这是一些我想要实现的示例代码：

StreamReader str = new StreamReader(@"\\192.168.0.1\C$\Test\test.txt");
str.ReadToEnd();

此代码抛出：

System.IO.IOException：'用户名或密码不正确'。

如何传递任何凭据？

我的最终结果应该是我尝试使用

访问此192.168.0.1

user: admin和password: 123456

我已经搜索了StreamReader个文档，但没有发现任何问题。

Answer 1

在访问文件之前，您必须模拟。一条将指导您How do you do Impersonation in .NET?的帖子。冒充您可以访问该文件。

Answer 2

我最终使用了以下代码：

    public class ConnectToSharedFolder : IDisposable
    {
        readonly string _networkName;

        public ConnectToSharedFolder(string networkName, NetworkCredential credentials)
        {
            _networkName = networkName;

            var netResource = new NetResource
            {
                Scope = ResourceScope.GlobalNetwork,
                ResourceType = ResourceType.Disk,
                DisplayType = ResourceDisplaytype.Share,
                RemoteName = networkName
            };

            var userName = string.IsNullOrEmpty(credentials.Domain)
                ? credentials.UserName
                : string.Format(@"{0}\{1}", credentials.Domain, credentials.UserName);

            var result = WNetAddConnection2(
                netResource,
                credentials.Password,
                userName,
                0);

            if (result != 0)
            {
                throw new Win32Exception(result, "Error connecting to remote share");
            }
        }

        ~ConnectToSharedFolder()
        {
            Dispose(false);
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            WNetCancelConnection2(_networkName, 0, true);
        }

        [DllImport("mpr.dll")]
        private static extern int WNetAddConnection2(NetResource netResource,
            string password, string username, int flags);

        [DllImport("mpr.dll")]
        private static extern int WNetCancelConnection2(string name, int flags,
            bool force);

        [StructLayout(LayoutKind.Sequential)]
        public class NetResource
        {
            public ResourceScope Scope;
            public ResourceType ResourceType;
            public ResourceDisplaytype DisplayType;
            public int Usage;
            public string LocalName;
            public string RemoteName;
            public string Comment;
            public string Provider;
        }

        public enum ResourceScope : int
        {
            Connected = 1,
            GlobalNetwork,
            Remembered,
            Recent,
            Context
        };

        public enum ResourceType : int
        {
            Any = 0,
            Disk = 1,
            Print = 2,
            Reserved = 8,
        }

        public enum ResourceDisplaytype : int
        {
            Generic = 0x0,
            Domain = 0x01,
            Server = 0x02,
            Share = 0x03,
            File = 0x04,
            Group = 0x05,
            Network = 0x06,
            Root = 0x07,
            Shareadmin = 0x08,
            Directory = 0x09,
            Tree = 0x0a,
            Ndscontainer = 0x0b
        }
    }
}

并使用这种方式：

            using (new ConnectToSharedFolder(networkPath, credentials))
            {
                StreamReader str = new StreamReader(@"\\192.168.0.1\C$\Test\test.txt");
                var x = str.ReadToEnd();
                Console.WriteLine(x);

此代码正是针对我的问题制作的！

如何在远程服务器上使用StreamReader访问和读取文件？

2 个答案: