Question

我制作了一个asp.net核心网络api，并实现了一些逻辑来注册用户。但是问题是，每当我从邮递员那里调用控制器时，它都会给我500内部服务器错误。我还实现了一个简单的IActionResult以返回欢迎消息，这也不起作用。这是我的代码。

[ApiController]
[Route("api/[controller]")]

public class AuthController : Controller
{
    private readonly IAuthRepository _repo;
    public AuthController(IAuthRepository repo)
    {
        _repo = repo;
    }

    [HttpPost("register")]
    public async Task<IActionResult> Register([FromBody]CreateUserDTO createUserDto)
    {
        createUserDto.Username=createUserDto.Username.ToLower();
        if(await _repo.UserExists(createUserDto.Username))
            return BadRequest("User With This User Name Already Exists");
        var userToCreate=new User
        {
            UserName=createUserDto.Username
        };

        var createdUser=await _repo.Register(userToCreate,createUserDto.Password);

        return Ok("user registered");
    }

    [HttpGet]
    public IActionResult Get()
    {
        var message="welcome message";
        return Ok(message);
    }


}

希望尽快收到您的来信。谢谢

Answer 1

我发现了问题所在。问题出在我的AuthRepository构造函数中，我没有指定public修饰符。这是我的AuthRepository代码（有效）

public class AuthRepository : IAuthRepository
{
    private readonly ApplicationDatabase _db;

    public  AuthRepository(ApplicationDatabase db)
    {
        _db = db;
    }
    public async  Task<User> Login(string username, string password)
    {
        var user=await _db.Users.Where(x=>x.UserName==username).FirstOrDefaultAsync();

        if (user==null)
            return null;
        if(!verifyPasswordHash(password,user.PasswordHash,user.PasswordSalt))
            return null;

        return user;
    }

    private bool verifyPasswordHash(string password, byte[] passwordHash, byte[] passwordSalt)
    {
        using(var hmac=new System.Security.Cryptography.HMACSHA512(passwordSalt))
        {
            var computedPasswordHash=hmac.ComputeHash(System.Text.Encoding.UTF8.GetBytes(password));
            for (int i = 0; i < computedPasswordHash.Length; i++)
            {
                if (computedPasswordHash[i]!=passwordHash[i])
                {
                    return false;
                }
            }
        }
        return true;
    }

    public async Task<User> Register(User user, string password)
    {
        byte[] passwordHash,passwordSalt;
        CreatePasswordHashSalt(password,out passwordHash,out passwordSalt);
        user.PasswordHash=passwordHash;
        user.PasswordSalt=passwordSalt;
        await _db.Users.AddAsync(user);
        _db.SaveChangesAsync();
        return user;
    }

    private void CreatePasswordHashSalt(string password, out byte[] passwordHash, out byte[] passwordSalt)
    {
        using(var hmac=new System.Security.Cryptography.HMACSHA512())
        {
            passwordSalt=hmac.Key;
            passwordHash=hmac.ComputeHash(System.Text.Encoding.UTF8.GetBytes(password));
        }
    }

    public async Task<bool> UserExists(string username)
    {
        if(await _db.Users.AnyAsync(x=>x.UserName==username))
            return true;

        return false;
    }
}

Webapi Response 500内部服务器错误

1 个答案: