最近做一个数据同步的功能，需要访问映射磁盘下的目录，使用Windows服务进行部署后台运行。但在部署过程中，出现对映射目录不识别的问题。使用exe程序读取则没有问题。
根据网上资料，各种添加权限都不起作用。最终，找的两篇博文（由于记录博客时，无法找到相关连接说明。非常感谢两位园友）进行处理则能访问。
通过使用以下两部操作则可完成。
1、配置可远程访问共享目录的用户。在服务启动过程中，使用此账号（与访问远程目录的用户名和密码一致）进行登录
2、通过使用C#直接访问远程目录 （感谢园友提供）
public enum ERROR_ID { ERROR_SUCCESS = 0, // Success ERROR_BUSY = 170, ERROR_MORE_DATA = 234, ERROR_NO_BROWSER_SERVERS_FOUND = 6118, ERROR_INVALID_LEVEL = 124, ERROR_ACCESS_DENIED = 5, ERROR_INVALID_PASSWORD = 86, ERROR_INVALID_PARAMETER = 87, ERROR_BAD_DEV_TYPE = 66, ERROR_NOT_ENOUGH_MEMORY = 8, ERROR_NETWORK_BUSY = 54, ERROR_BAD_NETPATH = 53, ERROR_NO_NETWORK = 1222, ERROR_INVALID_HANDLE_STATE = 1609, ERROR_EXTENDED_ERROR = 1208, ERROR_DEVICE_ALREADY_REMEMBERED = 1202, ERROR_NO_NET_OR_BAD_PATH = 1203 } public enum RESOURCE_SCOPE { RESOURCE_CONNECTED = 1, RESOURCE_GLOBALNET = 2, RESOURCE_REMEMBERED = 3, RESOURCE_RECENT = 4, RESOURCE_CONTEXT = 5 } public enum RESOURCE_TYPE { RESOURCETYPE_ANY = 0, RESOURCETYPE_DISK = 1, RESOURCETYPE_PRINT = 2, RESOURCETYPE_RESERVED = 8, } public enum RESOURCE_USAGE { RESOURCEUSAGE_CONNECTABLE = 1, RESOURCEUSAGE_CONTAINER = 2, RESOURCEUSAGE_NOLOCALDEVICE = 4, RESOURCEUSAGE_SIBLING = 8, RESOURCEUSAGE_ATTACHED = 16, RESOURCEUSAGE_ALL = (RESOURCEUSAGE_CONNECTABLE | RESOURCEUSAGE_CONTAINER | RESOURCEUSAGE_ATTACHED), } public enum RESOURCE_DISPLAYTYPE { RESOURCEDISPLAYTYPE_GENERIC = 0, RESOURCEDISPLAYTYPE_DOMAIN = 1, RESOURCEDISPLAYTYPE_SERVER = 2, RESOURCEDISPLAYTYPE_SHARE = 3, RESOURCEDISPLAYTYPE_FILE = 4, RESOURCEDISPLAYTYPE_GROUP = 5, RESOURCEDISPLAYTYPE_NETWORK = 6, RESOURCEDISPLAYTYPE_ROOT = 7, RESOURCEDISPLAYTYPE_SHAREADMIN = 8, RESOURCEDISPLAYTYPE_DIRECTORY = 9, RESOURCEDISPLAYTYPE_TREE = 10, RESOURCEDISPLAYTYPE_NDSCONTAINER = 11 } [StructLayout(LayoutKind.Sequential)] public struct NETRESOURCE { public RESOURCE_SCOPE dwScope; public RESOURCE_TYPE dwType; public RESOURCE_DISPLAYTYPE dwDisplayType; public RESOURCE_USAGE dwUsage; [MarshalAs(UnmanagedType.LPStr)] public string lpLocalName; [MarshalAs(UnmanagedType.LPStr)] public string lpRemoteName; [MarshalAs(UnmanagedType.LPStr)] public string lpComment; [MarshalAs(UnmanagedType.LPStr)] public string lpProvider; } public class NetworkConnection { [DllImport("mpr.dll")] public static extern int WNetAddConnection2A(NETRESOURCE[] lpNetResource, string lpPassword, string lpUserName, int dwFlags); [DllImport("mpr.dll")] public static extern int WNetCancelConnection2A(string sharename, int dwFlags, int fForce); public static int Connect(string remotePath, string localPath, string username, string password) { NETRESOURCE[] share_driver = new NETRESOURCE[1]; share_driver[0].dwScope = RESOURCE_SCOPE.RESOURCE_GLOBALNET; share_driver[0].dwType = RESOURCE_TYPE.RESOURCETYPE_DISK; share_driver[0].dwDisplayType = RESOURCE_DISPLAYTYPE.RESOURCEDISPLAYTYPE_SHARE; share_driver[0].dwUsage = RESOURCE_USAGE.RESOURCEUSAGE_CONNECTABLE; share_driver[0].lpLocalName = localPath; share_driver[0].lpRemoteName = remotePath; Disconnect(localPath); int ret = WNetAddConnection2A(share_driver, password, username, 1); return ret; } public static int Disconnect(string localpath) { return WNetCancelConnection2A(localpath, 1, 1); } }
应用代码
//此处的用户名admin和password 必须与上述新增的用户名和密码一致。
var status = NetworkConnection.Connect("\\\\192.168.0.26\\nasbak\\oracle", "X:", "admin", "password"); if (status == (int)ERROR_ID.ERROR_SUCCESS) { try { //业务逻辑处理，使用在程序中映射的本地路径读取即可 } catch (Exception ex) { //todo 异常记录 } } else { //返回状态码 } NetworkConnection.Disconnect(localpath);
如果以本地系统账号进行启动的话，返回1312错误码（ERROR_NO_SUCH_LOGON_SESSION）。此错误码字面意思应该没有登录状态。