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JwtHelper.cs
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112 lines (97 loc) · 3.83 KB
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using Blog.Core.Common;
using Microsoft.IdentityModel.Tokens;
using System;
using System.Collections.Generic;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using System.Security.Claims;
using System.Text;
using System.Threading.Tasks;
namespace Blog.Core.AuthHelper
{
public class JwtHelper
{
/// <summary>
/// 颁发JWT字符串
/// </summary>
/// <param name="tokenModel"></param>
/// <returns></returns>
public static string IssueJWT(TokenModelJWT tokenModel)
{
var dateTime = DateTime.UtcNow;
string iss = Appsettings.app(new string[] { "Audience", "Issuer" });
string aud = Appsettings.app(new string[] { "Audience", "Audience" });
string secret = Appsettings.app(new string[] { "Audience", "Secret" });
//var claims = new Claim[] //old
var claims = new List<Claim>
{
//下边为Claim的默认配置
new Claim(JwtRegisteredClaimNames.Jti, tokenModel.Uid.ToString()),
new Claim(JwtRegisteredClaimNames.Iat, $"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}"),
new Claim(JwtRegisteredClaimNames.Nbf,$"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}") ,
//这个就是过期时间，目前是过期100秒，可自定义，注意JWT有自己的缓冲过期时间
new Claim (JwtRegisteredClaimNames.Exp,$"{new DateTimeOffset(DateTime.Now.AddSeconds(100)).ToUnixTimeSeconds()}"),
new Claim(JwtRegisteredClaimNames.Iss,iss),
new Claim(JwtRegisteredClaimNames.Aud,aud),
//new Claim(ClaimTypes.Role,tokenModel.Role),//为了解决一个用户多个角色(比如：Admin,System)，用下边的方法
};
// 可以将一个用户的多个角色全部赋予；
// 作者：DX 提供技术支持；
claims.AddRange(tokenModel.Role.Split(',').Select(s => new Claim(ClaimTypes.Role, s)));
//秘钥 (SymmetricSecurityKey 对安全性的要求，密钥的长度太短会报出异常)
var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(secret));
var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
var jwt = new JwtSecurityToken(
issuer: iss,
claims: claims,
signingCredentials: creds);
var jwtHandler = new JwtSecurityTokenHandler();
var encodedJwt = jwtHandler.WriteToken(jwt);
return encodedJwt;
}
/// <summary>
/// 解析
/// </summary>
/// <param name="jwtStr"></param>
/// <returns></returns>
public static TokenModelJWT SerializeJWT(string jwtStr)
{
var jwtHandler = new JwtSecurityTokenHandler();
JwtSecurityToken jwtToken = jwtHandler.ReadJwtToken(jwtStr);
object role = new object(); ;
try
{
jwtToken.Payload.TryGetValue(ClaimTypes.Role, out role);
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
var tm = new TokenModelJWT
{
Uid = (jwtToken.Id).ObjToInt(),
Role = role != null ? role.ObjToString() : "",
};
return tm;
}
}
/// <summary>
/// 令牌
/// </summary>
public class TokenModelJWT
{
/// <summary>
/// Id
/// </summary>
public long Uid { get; set; }
/// <summary>
/// 角色
/// </summary>
public string Role { get; set; }
/// <summary>
/// 职能
/// </summary>
public string Work { get; set; }
}
}