c# - ASP.NET Claim NameIdentifier Id 获取转换错误

Question

我对这段代码有疑问:

private async Task<object> GenerateJwtToken(string email, User user)
{
    var claims = new List<Claim>
    {
        new Claim(JwtRegisteredClaimNames.Sub, email),
        new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
        new Claim(ClaimTypes.NameIdentifier, user.Id)
    };

用户扩展 IdentityUser。问题是我得到:

Cannot convert from 'int' to 'System.Security.Claims.ClaimsIdentity'". Even for ClaimTypes.NameIdentifier i get error: "Cannot convert from 'string' to 'System.IO.BinaryReader'

如果我将 Id 更改为其他内容，例如电子邮件，或者 firstName 错误消失...找不到任何相关信息。

Answer 1

我在新的 Claim(ClaimTypes.Name, userFromRepo.Username) 的 Visual Code 上有这个错误，告诉 Argument 1: cannot convert from 'string' to 'System.IO.BinaryReader '。我的代码是这样的:

    public async Task<IActionResult> ReadUser([FromBody]UserDto userDto){

        User userFromRepo = _authRepository.GetUserAsync();
        //generate token for user
        var tokenHandler = new JwtSecurityTokenHandler();
        var key = Encoding.ASCII.GetBytes("my secret key");
        var tokenDescriptor = new SecurityTokenDescriptor{
            Subject = new ClaimsIdentity(new Claim[]
            {
                new Claim(ClaimTypes.NameIdentifier, userFromRepo.Id.ToString()),
                new Claim(ClaimTypes.Name, userFromRepo.Username) //error here in this ctor

            }),
            Expires = DateTime.Now.AddDays(1),
            SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha512Signature)
        };

在我的存储库方法之前添加缺少的 await 关键字后，顺便说一句，它是异步的，错误现在消失了。

    public async Task<IActionResult> ReadUser([FromBody]UserDto userDto){

        User userFromRepo = await _authRepository.GetUserAsync(); //added await
        //generate token for user
        var tokenHandler = new JwtSecurityTokenHandler();
        var key = Encoding.ASCII.GetBytes("my secret key");
        var tokenDescriptor = new SecurityTokenDescriptor{
            Subject = new ClaimsIdentity(new Claim[]
            {
                new Claim(ClaimTypes.NameIdentifier, userFromRepo.Id.ToString()),
                new Claim(ClaimTypes.Name, userFromRepo.Username) //error gets fixed

            }),
            Expires = DateTime.Now.AddDays(1),
            SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha512Signature)
        };

也许您遇到过类似的情况？