详解ABP框架中Session功能的使用方法_基础应用_

 public class MyClass : ITransientDependency { public IAbpSession AbpSession { get; set; } public MyClass() { AbpSession = NullAbpSession.Instance; } public void MyMethod() { var currentUserId = AbpSession.UserId; //... } } 

 using Abp.MultiTenancy; namespace Abp.Runtime.Session { public interface IAbpSession { long? UserId { get; } int? TenantId { get; } MultiTenancySides MultiTenancySide { get; } long? ImpersonatorUserId { get; } int? ImpersonatorTenantId { get; } } } 

 using Abp.MultiTenancy; namespace Abp.Runtime.Session { /// 
 /// Implements null object pattern for . /// 
 public class NullAbpSession : IAbpSession { /// 
 /// Singleton instance. /// 
 public static NullAbpSession Instance { get { return SingletonInstance; } } private static readonly NullAbpSession SingletonInstance = new NullAbpSession(); ///  public long? UserId { get { return null; } } ///  public int? TenantId { get { return null; } } public MultiTenancySides MultiTenancySide { get { return MultiTenancySides.Tenant; } } public long? ImpersonatorUserId { get { return null; } } public int? ImpersonatorTenantId { get { return null; } } private NullAbpSession() { } } } 

 using System; using System.Linq; using System.Security.Claims; using System.Threading; using Abp.Configuration.Startup; using Abp.MultiTenancy; using Abp.Runtime.Security; namespace Abp.Runtime.Session { /// 
 /// Implements  to get session properties from claims of . /// 
 public class ClaimsAbpSession : IAbpSession { private const int DefaultTenantId = 1; public virtual long? UserId { get { var claimsPrincipal = Thread.CurrentPrincipal as ClaimsPrincipal; if (claimsPrincipal == null) { return null; } var claimsIdentity = claimsPrincipal.Identity as ClaimsIdentity; if (claimsIdentity == null) { return null; } var userIdClaim = claimsIdentity.Claims.FirstOrDefault(c => c.Type == ClaimTypes.NameIdentifier); if (userIdClaim == null || string.IsNullOrEmpty(userIdClaim.Value)) { return null; } long userId; if (!long.TryParse(userIdClaim.Value, out userId)) { return null; } return userId; } } public virtual int? TenantId { get { if (!_multiTenancy.IsEnabled) { return DefaultTenantId; } var claimsPrincipal = Thread.CurrentPrincipal as ClaimsPrincipal; if (claimsPrincipal == null) { return null; } var tenantIdClaim = claimsPrincipal.Claims.FirstOrDefault(c => c.Type == AbpClaimTypes.TenantId); if (tenantIdClaim == null || string.IsNullOrEmpty(tenantIdClaim.Value)) { return null; } return Convert.ToInt32(tenantIdClaim.Value); } } public virtual MultiTenancySides MultiTenancySide { get { return _multiTenancy.IsEnabled && !TenantId.HasValue ? MultiTenancySides.Host : MultiTenancySides.Tenant; } } public virtual long? ImpersonatorUserId { get { var claimsPrincipal = Thread.CurrentPrincipal as ClaimsPrincipal; if (claimsPrincipal == null) { return null; } var impersonatorUserIdClaim = claimsPrincipal.Claims.FirstOrDefault(c => c.Type == AbpClaimTypes.ImpersonatorUserId); if (impersonatorUserIdClaim == null || string.IsNullOrEmpty(impersonatorUserIdClaim.Value)) { return null; } return Convert.ToInt64(impersonatorUserIdClaim.Value); } } public virtual int? ImpersonatorTenantId { get { if (!_multiTenancy.IsEnabled) { return DefaultTenantId; } var claimsPrincipal = Thread.CurrentPrincipal as ClaimsPrincipal; if (claimsPrincipal == null) { return null; } var impersonatorTenantIdClaim = claimsPrincipal.Claims.FirstOrDefault(c => c.Type == AbpClaimTypes.ImpersonatorTenantId); if (impersonatorTenantIdClaim == null || string.IsNullOrEmpty(impersonatorTenantIdClaim.Value)) { return null; } return Convert.ToInt32(impersonatorTenantIdClaim.Value); } } private readonly IMultiTenancyConfig _multiTenancy; /// 
 /// Constructor. /// 
 public ClaimsAbpSession(IMultiTenancyConfig multiTenancy) { _multiTenancy = multiTenancy; } } } 

 using System; namespace Abp.Runtime.Session { /// 
 /// Extension methods for . /// 
 public static class AbpSessionExtensions { /// 
 /// Gets current User's Id. /// Throws  if  is null. /// 
 /// Session object. /// Current User's Id. public static long GetUserId(this IAbpSession session) { if (!session.UserId.HasValue) { throw new AbpException("Session.UserId is null! Probably, user is not logged in."); } return session.UserId.Value; } /// 
 /// Gets current Tenant's Id. /// Throws  if  is null. /// 
 /// Session object. /// Current Tenant's Id. ///  public static int GetTenantId(this IAbpSession session) { if (!session.TenantId.HasValue) { throw new AbpException("Session.TenantId is null! Possible problems: No user logged in or current logged in user in a host user (TenantId is always null for host users)."); } return session.TenantId.Value; } /// 
 /// Creates  from given session. /// Returns null if  is null. /// 
 /// The session. public static UserIdentifier ToUserIdentifier(this IAbpSession session) { return session.UserId == null ? null : new UserIdentifier(session.TenantId, session.GetUserId()); } } }