using Microsoft.IdentityModel.Tokens;
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using System;
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using System.Collections.Generic;
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using System.IdentityModel.Tokens.Jwt;
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using System.Linq;
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using System.Security.Claims;
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using System.Text;
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using System.Threading.Tasks;
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using WIDESEA_Core.Const;
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using WIDESEA_Core.Helper;
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using WIDESEA_Core.HttpContextUser;
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namespace WIDESEA_Core.Authorization
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{
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public class JwtHelper
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{
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/// <summary>
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/// 生成JWT
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/// </summary>
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/// <param name="serInfo"></param>
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/// <returns></returns>
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public static string IssueJwt(TokenModelJwt tokenModel)
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{
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string exp = $"{new DateTimeOffset(DateTime.Now.AddMinutes(/*tokenModel.UserId == 1 ? 43200 : */AppSettings.app("ExpMinutes").ObjToInt())).ToUnixTimeSeconds()}";
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var claims = new List<Claim>
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{
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new Claim(JwtRegisteredClaimNames.Jti,tokenModel.UserId.ToString()),
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new Claim(JwtRegisteredClaimNames.Iat, $"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}"),
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new Claim(JwtRegisteredClaimNames.Nbf,$"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}") ,
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//JWT过期时间
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//默认设置jwt过期时间120分钟
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new Claim (JwtRegisteredClaimNames.Exp,exp),
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new Claim(JwtRegisteredClaimNames.Iss,AppSecret.Issuer),
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new Claim(JwtRegisteredClaimNames.Aud,AppSecret.Audience),
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new Claim(ClaimTypes.Role, tokenModel.RoleId.ToString())
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};
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// 可以将一个用户的多个角色全部赋予；
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// 作者：DX 提供技术支持；
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//秘钥16位
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var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(AppSecret.JWT));
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var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
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JwtSecurityToken securityToken = new JwtSecurityToken(issuer: AppSecret.Issuer, claims: claims, signingCredentials: creds);
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string jwt = new JwtSecurityTokenHandler().WriteToken(securityToken);
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return jwt;
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}
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/// <summary>
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/// 解析
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/// </summary>
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/// <param name="jwtStr"></param>
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/// <returns></returns>
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public static UserInfo SerializeJwt(string jwtStr)
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{
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var jwtHandler = new JwtSecurityTokenHandler();
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JwtSecurityToken jwtToken = jwtHandler.ReadJwtToken(jwtStr);
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UserInfo userInfo = new UserInfo
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{
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UserId = Convert.ToInt32(jwtToken.Id),
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RoleId = (jwtToken.Payload[ClaimTypes.Role] ?? 0).ObjToInt(),
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};
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return userInfo;
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}
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/// <summary>
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/// 获取过期时间
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/// </summary>
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/// <param name="jwtStr"></param>
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/// <returns></returns>
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public static DateTime GetExp(string jwtStr)
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{
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var jwtHandler = new JwtSecurityTokenHandler();
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JwtSecurityToken jwtToken = jwtHandler.ReadJwtToken(jwtStr);
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DateTime expDate = (jwtToken.Payload[JwtRegisteredClaimNames.Exp] ?? 0).ObjToInt().GetTimeSpmpToDate();
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return expDate;
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}
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public static bool IsExp(string jwtStr)
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{
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return GetExp(jwtStr) < DateTime.Now;
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}
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public static int GetUserId(string jwtStr)
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{
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try
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{
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if (jwtStr.IsNullOrEmpty()) return 0;
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jwtStr = jwtStr.Replace("Bearer ", "");
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return new JwtSecurityTokenHandler().ReadJwtToken(jwtStr).Id.ObjToInt();
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}
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catch
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{
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return 0;
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}
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}
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}
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/// <summary>
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/// 令牌
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/// </summary>
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public class TokenModelJwt
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{
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/// <summary>
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/// UserId
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/// </summary>
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public long UserId { get; set; }
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/// <summary>
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/// 角色
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/// </summary>
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public int RoleId { get; set; }
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/// <summary>
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/// 职能
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/// </summary>
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public string Work { get; set; }
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}
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}
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