在使用ASP.NET MVC中的refresh_token oAuth2时,可能会出现unsupported_grant_type的错误。这意味着您无法使用refresh_token来获取新的访问令牌。要解决此问题,您需要确保以下代码:
授权服务器:确保您的授权服务器配置中支持refresh_token作为授权类型,例如:
public override async Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
{
// 可以使用如下方法检查client id是否与refresh_token匹配
// if (context.ClientId == "myClientId")
// {
// context.Validated();
// }
// else
// {
// context.SetError("invalid_client", "Client authentication failed.");
// return;
// }
context.Validated();
return;
}
public override async Task GrantRefreshToken(OAuthGrantRefreshTokenContext context)
{
// 检查client是否和access token相匹配
var clientId = context.Ticket.Properties.Dictionary["as:client_id"];
if (context.ClientId != clientId)
{
context.SetError("invalid_clientId", "Refresh token is issued to a different clientId.");
return;
}
// 更新过期时间, 生成新的access token和refresh token
var newIdentity = new ClaimsIdentity(context.Ticket.Identity);
newIdentity.AddClaim(new Claim("newClaim", "refreshToken"));
var newTicket = new AuthenticationTicket(newIdentity, context.Ticket.Properties);
context.Validated(newTicket);
}
客户端:确保您的客户端代码中请求配置包含grant_type为"refresh_token",例如:
public async Task RefreshToken()
{
string refreshToken = // 从用户信息或其他来源中获取
using (var httpClient = new HttpClient())
{
var keyValues = new List>
{
new KeyValuePair("grant_type", "refresh_token"),
new KeyValuePair("refresh_token", refreshToken)
};
var request = new HttpRequestMessage(HttpMethod.Post, "https://localhost:5001/token");
request.Content