/// <summary>
/// 生成JwtToken
/// </summary>
/// <param name="tokenModel"></param>
/// <returns></returns>
public static async Task <LoginParam> GetJwtToken(TokenModelJwt tokenModel)
{
string iss = ConfigHelper.JwtIssuer;
string aud = ConfigHelper.JwtAudience;
string secret = ConfigHelper.JwtSecret;
int overSec = ConfigHelper.JwtOverSec;
DateTime dtNow = DateTime.Now;
List <Claim> claims = GetJwtClaim(tokenModel, iss, aud, overSec, dtNow);
//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);
// 保存用户信息到HttpContext.User
await IdentifyLogin(claims);
//// 屏蔽，现在Mvc跳转有Cookies认证，没必要保存Jwt Cookie
//// Jwt授权保存到Cookies
//StaticHttpContext.Current.Response.Cookies.Append(AuthHelper.JwtAuthName, encodedJwt,
// new CookieOptions
// {
// HttpOnly = true,
// Expires = new DateTimeOffset(dtNow).AddSeconds(overSec)
// });
return(new LoginParam
{
Token = encodedJwt,
ExpiresIn = overSec,
ExpireTimeStamp = new DateTimeOffset(dtNow.AddSeconds(overSec)).ToUnixTimeMilliseconds(),
UserName = tokenModel.UserName
});
}
/// <summary>
/// 验证Jwt授权
/// </summary>
/// <param name="httpContext"></param>
/// <returns></returns>
public Task Invoke(HttpContext httpContext)
{
PreProceed(httpContext);
//检测是否包含'Authorization'请求头
if (!httpContext.Request.Headers.ContainsKey("Authorization"))
{
PostProceed(httpContext);
return(_next(httpContext));
}
var tokenHeader = httpContext.Request.Headers["Authorization"].ToString().Replace("Bearer ", "");
try
{
if (tokenHeader.Length >= 128)
{
TokenModelJwt tm = AuthHelper.DecryptJwtToken(tokenHeader);
//授权
//var claimList = new List<Claim>();
//var claim = new Claim(ClaimTypes.Role, tm.Role);
//claimList.Add(claim);
//var identity = new ClaimsIdentity(claimList);
//var principal = new ClaimsPrincipal(identity);
//httpContext.User = principal;
}
}
catch (Exception ex)
{
//Console.WriteLine($"{DateTime.Now} middleware wrong:{e.Message}");
_logHelper.Error($"JwtTokenAuth:出现异常：{ex.Message}", ex);
}
PostProceed(httpContext);
return(_next(httpContext));
}
