更新JWT Token .net核心Web API以添加新声明

using System.IdentityModel.Tokens.Jwt;
using Microsoft.IdentityModel.Tokens;
using System.Security.Claims;

string token = "your_existing_token";

var tokenHandler = new JwtSecurityTokenHandler();
var jwtToken = tokenHandler.ReadJwtToken(token);

var claims = jwtToken.Claims.ToList();

claims.Add(new Claim("new_claim_type", "new_claim_value"));

var tokenDescriptor = new SecurityTokenDescriptor
{
    Subject = new ClaimsIdentity(claims),
    Expires = DateTime.UtcNow.AddHours(1), // 设置过期时间
    SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(Encoding.UTF8.GetBytes("your_secret_key")), SecurityAlgorithms.HmacSha256Signature) // 设置签名密钥
};

var newToken = tokenHandler.CreateToken(tokenDescriptor);
var newTokenString = tokenHandler.WriteToken(newToken);