/// <summary>
/// 颁发JWT字符串
/// </summary>
/// <param name="tokenModel"></param>
/// <returns></returns>
public static string IssueJWT(TokenModelJWT tokenModel)
{
var dateTime = DateTime.UtcNow;
//var claims = new Claim[]
//{
// new Claim(JwtRegisteredClaimNames.Jti,tokenModel.Uid.ToString()),//Id
// new Claim("Role", tokenModel.Role),//角色
// new Claim(JwtRegisteredClaimNames.Iat,dateTime.ToString(),ClaimValueTypes.Integer64)
//};
var claims = new Claim[]
{
new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
new Claim(JwtRegisteredClaimNames.Iat, $"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}"),
new Claim(JwtRegisteredClaimNames.Nbf, $"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}"),
//过期时间，目前是过期100秒，可以自定义，注意Jwt有自己的缓冲过期时间
new Claim(JwtRegisteredClaimNames.Exp, $"{new DateTimeOffset(DateTime.Now.AddHours(2)).ToUnixTimeSeconds()}"),
new Claim(JwtRegisteredClaimNames.Iss, "YBlog.Core"),
new Claim(JwtRegisteredClaimNames.Aud, "wr"),
//这个Role是官方UseAuthentication要验证的Role,我们不用手动设置这个Role的属性了
new Claim(ClaimTypes.Role, tokenModel.Role),
};
//秘钥
var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(JwtHelper.secretKey));
var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
var jwt = new JwtSecurityToken(
issuer: "YBlog.Core",
claims: claims, //声明集合
expires: dateTime.AddHours(2),
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("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);
}
public async Task Invoke(HttpContext context)
{
if (!context.Request.Headers.ContainsKey("Authorization"))
{
await _next.Invoke(context);
}
else
{
var tokenHeader = context.Request.Headers["Authorization"].ToString();
TokenModelJWT tm = JwtHelper.SerializeJWT(tokenHeader);//序列化token，获取授权
//授权 注意这个可以添加多个角色声明，请注意这是一个 list
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);
context.User = principal;
await _next.Invoke(context);
}
}
